TW: 13" Rotor, Caliper Brackets

[timtiminy]

Before I go ahead and make brake caliper brackets to use 13" Cobra rotors with Z32 calipers (Front), I want to know how much interest there would be for this. Basically you would be getting the two brackets and hubcentric rings(or spacers for the lug bolts to keep the rotor centered) that will allow for the use of the 13" cobra rotors up front with your 300zx 4 piston calipers. Let me know what you think and how much you are willing to pay. Questions I would like for you to answer me are:

1)How does $50+ shipping sound, i think that would be fair.

2)Should I include hardware? This will increase price a bit depending on how much i can source the hardware for.

3)Should i have the option to have them powder coated for an extra $10? By request only.

4)Would you be interested in a kit that comes with rotors? Brembo blanks, slotted, or drilled and slotted depending on preferance. I will have to figure out pricing if so.

P.S. I will also have brackets for the ECR33 calipers if anyone is interested, as I know R33 rotors are hard to come by.

[ThatGuy]

I'd say definitely include hardware. Slotted or Blanked Rotors can be an "add-on" option.

[FinalDrive]

1)How does $50+ shipping sound, i think that would be fair.
Sounds fair

2)Should I include hardware? This will increase price a bit depending on how much i can source the hardware for.
Yes

3)Should i have the option to have them powder coated for an extra $10? By request only.
Only if they will be visible when installed

4)Would you be interested in a kit that comes with rotors? Brembo blanks, slotted, or drilled and slotted depending on preferance. I will have to figure out pricing if so.
Nope

[timtiminy]

okay so far soo good i am pretty sure i will be including hardware. The brackets cant be seen so it's no use to powder coat unless someone really wants it. I will find out pricing on rotors for those who want everything at once.

[CrazyIvan]

1)How does $50+ shipping sound, i think that would be fair.
Sounds fair x2

2)Should I include hardware? This will increase price a bit depending on how much i can source the hardware for.
Yes

3)Should i have the option to have them powder coated for an extra $10? By request only.
Nope

4)Would you be interested in a kit that comes with rotors? Brembo blanks, slotted, or drilled and slotted depending on preferance. I will have to figure out pricing if so.
Nope

[upSLIDEdown]

What are the brackets going to be made of???

[timtiminy]

brackets will be steel. considered aluminum and stainless but aluminum is too soft and stainless would just be expensive and not have any benefits over regular steel other than not rusting.

[slideways2004]

i would be interested, but how safe is the hubcentric idea? why not make a bracket to use the 350z rotors so the actual rotor is hubcentric

[n2motorsports]

what's the thickness of the rotor;s. will it work for the z32 26mm calipers as well?

[Slidin240Wayz]

1)How does $50+ shipping sound, i think that would be fair.

Very Fair

2)Should I include hardware? This will increase price a bit depending on how much i can source the hardware for.

Include it, it will save headaches.

3)Should i have the option to have them powder coated for an extra $10? By request only.

I like this option just to protect the metal.

4)Would you be interested in a kit that comes with rotors? Brembo blanks, slotted, or drilled and slotted depending on preferance. I will have to figure out pricing if so.

I would go with the rotors if they are the same price, or cheaper than the price I can find them at.

P.S. I will also have brackets for the ECR33 calipers if anyone is interested, as I know R33 rotors are hard to come by.

I need these brackets, instead of the z32 ones.

pss hubcentric rings?

[HyperTek]

very interested!

How much different would the cobra rotors be from the 350z rotors? I know splparts makes a bracket, so not to steal customers away from them, but that would be nice too.

[LB.Motoring]

very interested!

How much different would the cobra rotors be from the 350z rotors? I know splparts makes a bracket, so not to steal customers away from them, but that would be nice too.

Im down for this... would be cool to make brackets for the z33 too,

but anyways outcome will be put me down for it.

Also, im on the look out for front z32 calipers cheapies pleaseee :keke:

[slideways2004]

i say make the bracket for the 350z rotors to avoid the hubcentric ring issue

[LB.Motoring]

i say make the bracket for the 350z rotors to avoid the hubcentric ring issue

http://www.mp3car.com/vbulletin/images/smilies/mswerd.gif

lets get um to work with some of these badboyssss

http://www.racingbrake.com/NISSAN_350Z_s/255.htm

http://www.racingbrake.com/photos/1002-2.jpg

oh, and im local, id come pick some up for me and the guys :keke:

[SlowCoupe]

i say make the bracket for the 350z rotors to avoid the hubcentric ring issue

im down for this one. but its not my call.

im in 100% if theres one made for the z33 track rotors.

theres a shop that sells em but i want just the bracket.

[LB.Motoring]

z33 track rotorsssss

http://www.mp3car.com/vbulletin/images/smilies/hesaid.gif

[boost infested]

interested also...

[LB.Motoring]

yah still down with r33 rotorss =D

[timtiminy]

Okay well i have seen interest in the z33 track rotors which would actually be a 12.75" rotor.
The difference between these and cobra rotors is the fact that cobra rotors are 13" and cobra rotors would need hubcentric rings in order to keep the rotors centered on the hub.
I can look into making a kit for the z33 track rotors but the price will significantly change. Cobra rotors are an easy find and offer 13" diameter. I even believe they are cheaper.
The Cobra Rotors are 28mm thick, not sure if they will fit the 26mm z32 calipers?
These will have to be ran with 17"+ wheels and may require spacers depending on wheel offset. 17x8 with +28mm offset there is more than an inch of clearance on the wheels i own.
So far so good, thanks for all your responses. Keep um coming!

[slideways2004]

so z33 track rotors are 12.75 inch. how big are the non-brembo version

[turtl631]

Z33 track rotors are super expensive, whereas you can easily find cheapo cobra rotor blanks for next to nothing. Cheapest Z rotors I've found are like $220 a pair, cheapest Cobra rotors are $50 a pair. For people who will use this setup on the track, having a good source of cheap replacement blanks is a major plus. Plus, several places already sell brackets for Z33 rotors. I say go cobra w/ metal hubcentric rings.

[240trainee]

I would definatly be down for a set, $50 or so sounds fair, sounds rad

[chmercer]

does anybody know of any affordably priced 2 piece 350z track rotors

[Slidin240Wayz]

I'm down for a 2 piece. I am sure you can make it with wilwood parts, but the getting the correcto dimensions can be difficult.

Please note the R32 GTR caliper, using a z33 rotor, will have to be about 1cm closer to the hub.

http://www.racingbrake.com/product_p/2016-311-17.htm

http://www.racingbrake.com/photos/2014-311-21-2.jpg

Carlos

[chmercer]

500 bucks for a pair of rotors :/

i am so broke

[timtiminy]

Thanks for the interest. Please keep the replies coming. I will be working on the bracket kit for the 350z track rotors which are 324mm as opposed to the 330mm cobra rotors. these will be a bit more expensive but still cheaper than the ones out there. I want to keep everything affordable, thats why I was going for the cobra rotors but i have seen the want for brackets to use the 350z track rotors with the z32 brake setup. plusses there are thicker rotor 30mm instead of 28mm on the cobra rotor, and you wouldnt have to use hubcentric rings to keep them centered. Oh and the fact that it is still Nissan... either way I will be working on 4 bracket kits total. Cobra rotors w/ z32 calipers; Cobra rotors w/ r33 calipers; z33 track rotors w/ z32 calipers; and z33 track rotors w/ r33 calipers
Cobra rotors will be the cheapest alternative overall thanks turtl631 for pointing all that out.

[slideways2004]

yeah the cobra rotors are defintaly cheaper. its just that i have never seen hub centric rings on rotors before so i'm not sure how good/safe that works

[Slidin240Wayz]

Just to clarify, these are the R32 GTR calipers I am talking about.

http://i7.photobucket.com/albums/y264/Cdoria/DSC02786.jpg

Will you still offer the hubcentric rings with the cobra rotors?

BTW, most aftermarket rims are not hubcentric, I know SPL sells hubcentric rings for rims.

Carlos

[timtiminy]

the ring is to keep the rotor centered, it will stay flush with the rotor, you will still be able to use hubcentric rings for your wheels ontop of the rotors.
those are the r33 calipers i will be working on the cobra kit for. these are being a bit tricky since they have longer arms than the z32 calipers, i may have to offset the caliper higher on the rotor (10 o'clock position instead of 9).

[slideways2004]

yeah, but wheels and rotors are different when talking about being hubcentric. does anyone have a pic or something of a hubcentric ring for rotors b/c i can't picture it

[IKnowAllOfNothing]

1)How does $50+ shipping sound, i think that would be fair.
Sounds fair

2)Should I include hardware? This will increase price a bit depending on how much i can source the hardware for.
Yes

3)Should i have the option to have them powder coated for an extra $10? By request only.
Nope

4)Would you be interested in a kit that comes with rotors? Brembo blanks, slotted, or drilled and slotted depending on preferance. I will have to figure out pricing if so.
Maybe, and two-piece would be a cool option as well

"build it and they will come"

[timtiminy]

http://i41.photobucket.com/albums/e273/timtiminy/rotorhubring.jpg
http://i41.photobucket.com/albums/e273/timtiminy/ringonhub.jpg
http://i41.photobucket.com/albums/e273/timtiminy/ringonrotor.jpg

Maybe that will give you a better idea of what the hubcentric ring for the rotor does, and how it looks.

[turtl631]

In all honesty, most 240 owners are cheapasses. While a few people will run 2 piece rotors and such, most just want bigger front rotors for looks (most likely) or better bias on the track (me). Both sets of people are far more likely to buy your kit if they can run readily available $40 rotors, rather than $120 powerslots or $250 2 piecers. Also, since there are already at least 2 sources for brackets to run Z33 track rotors, I'd say you should try to get the cobra ones done first. I'd be up for a set.

EDIT: Rockauto.com, great site, has Raybestos PG Plus Cobra rotors for $25.99 each. Can't beat that! I'll take rotors that are 10x cheaper any day, whether for street use or track. Even if the cheap ones are crappier and need to be replaced more often, there's no way the more expensive rotors are gonna come close to being that good a value. Check honda-tech's road race/autocross forum, most of the guys doing honda challenge, etc just run autozone blanks. If you want some fragile drilled/slotted bling or $$$$ 2 piece rotors, go for it, but I think most people here would be better served with inexpensive blanks.

EDIT 2:
1.) $50 plus shipping is fair
2.) Included hardware would be nice, you can probably buy in bulk and save everyone money
3.) Powercoated only if necessary for rust prevention, so it really depends what material you go with.
4.) Personally, I'd source my own rotors to save money.

[HyperTek]

^ in that pic, the hole pattern/size looks horrible since its bigger then the stud.. so it would really relie on the hubcentric ring.. could that become a problem?? and the hat spacing looks more flat in that pic, is this true? it looks like it would bring the caliper further out, which might have a effect on some wheels. Please confirm thanks

[Inland180]

which ever one will work for me! Im down to buy a couple sets of brackets for what ever you make them.count me in!

[timtiminy]

the bracket will bring the caliper out about 10mm more than the regular z32 setup, this is because the cobra rotors have a different offset. this can be remedied by the use of wheel spacers. not you will have to use 17" wheels or bigger to use the 13" rotors anyhow. The hubcentric ring will keep the rotor centered. as for the lug holes..this is something that shouldn't be a problem but i may do "lugcentric" rings instead just to keep everything centered keep everything nice and tight instead of there being any type of slop in the rotor. this would be a more expensive option just cause you would have to get rings instead of two. but i may use hubcentric rings and one "lugcentric" ring to keep it tight...only problem there is the balance of the rotating assembly. so its either one or the other.

[redsuns3838]

Z33 track rotors. keep it in the fizzam.

[upSLIDEdown]

the bracket will bring the caliper out about 10mm more than the regular z32 setup, this is because the cobra rotors have a different offset. this can be remedied by the use of wheel spacers.

This will be a problem for some people such as myself. I need something that won't protrude any more. Does anyone know if the Z33 rotors have the same hat offset as Z32?

[timtiminy]

the z33 rotors are the same offset as the z32 so it wont bring the caliper out any further. z33 brackets will prolly be closer to $100, and z33 rotors are a bit more expensive than cobra rotors.

[zads]

I say make the Cobra kit; you can add +2 sets for the confirmed buyer list (if you make them).

1)How does $50+ shipping sound, i think that would be fair.
Sounds fair to me.

2)Should I include hardware? This will increase price a bit depending on how much i can source the hardware for.
Make it an option?

3)Should i have the option to have them powder coated for an extra $10? By request only.
I'd take the powdercoat option for sure.

4)Would you be interested in a kit that comes with rotors? Brembo blanks, slotted, or drilled and slotted depending on preferance. I will have to figure out pricing if so.
Make it an option, too.

[turtl631]

z33 rotors are a bit more expensive than cobra rotors.

Hardly a bit more expensive, the cheapest Z33 rotors available cost cost about $100 more EACH than the cheapest Cobra rotors available. That starts to add up real quick when you're tracking your car and burning through rotors. If you start looking at 2 piece rotors, for example RacingBrake, it seems that Z33 rotors might be a little cheaper, but very few people will actually run such rotors. Besides, there are already several options for Z33 rotor brackets, both from a reputable store and from ebay. Why try to compete with them when you can make something entirely different that will attract a new subset of customers? Give us an alternative to $$$ SPL brackets with expensive Z33 rotors.

[HyperTek]

the problem i see with pushing the caliper outward would be the brake line issue.. some lines might already be stretching out at full steering locks.

What about making the bracket to adapt 3000gt rotors? thats a known swap for z32s.. would making a bracket for that rotor be any more costly compared to teh z33 bracket?

[wilfonzo]

cobra drilled to 4lug with hubcentric rings and brackets for z32 calipers
if this goes through PM me im down for a kit

[HyperTek]

haha what 4 lug wheels will clear that setup?? no offense...

[wilfonzo]

none taken, i like having the extra 400$ in my pocket rather than in an extra 4 lug studs

my bandwagon sportmax's 18x8.5+30

... please no one turn this into a 5 lugs are better than 4 debate, i really dont care

[timtiminy]

Z32 caliper w/ cobra rotor:
http://i41.photobucket.com/albums/e273/timtiminy/z32_w_cobra.jpg
Z32 caliper w/ 350z track rotor:
http://i41.photobucket.com/albums/e273/timtiminy/z32_w_350z.jpg
ECR33 caliper w/ cobra rotor:
http://i41.photobucket.com/albums/e273/timtiminy/R33_w_cobra.jpg
ECR33 caliper w/ 350z track rotor:
http://i41.photobucket.com/albums/e273/timtiminy/R33_w_350z.jpg

[Slidin240Wayz]

That's so hot. Is the caliper closer to the strut tower? The fact of stretched SS lines is not something I want.

Carlos

[Siizzzoooo]

I dunno, I think its gonna be hard to compete against the SPL kit

you're pricing atleast $100 for the caliper bracket, which leaves $330 for Z33 track edition rotors.

yeah you can spend about $200 for some decent rotors, but why not just spend the extra for some PowerSlots

For the price of the SPL kit, you get everything including bolts, washers, and everything you need to do the upgrade minus the Z32 calipers and conversion lines

i just see it easier to buy it as a kit, rather than piecing it together to save a few bucks imho

it would be a great seller for $50, but for $100...you might not make your money back on R & D

[upSLIDEdown]

You can get Powerslot rotors from PDM for $130/each. Only $30 more per rotor than Z32 rotors.

[timtiminy]

wilfonzo: if you do a 4 lug redrill on the cobra rotors you wont be needing the hub rings because you will be drilling the exact size lug holes to keep the rotor solid and centered.
I think i may steer clear of the hub rings and go with spacers for the lugs/lug holes on the cobra kit which will eliminate any possibility of the rotors sliding because of the play on the lug holes. and it will keep the rotor solid and centered.

Slidin240Wayz: on the R33 caliper brackets the caliper has to sit offset, its about 25* either up or down depending on which way you put the brackets. I dont forsee brake line stretching to be a problem, but if it does end up being an issue i will look into brake line extensions or longer brake lines.

Siizzzoooo: That is why i originally wanted to stick with the cobra rotors, but what i want to do is supply something for a cheaper price with great quality as an option to other kits, so if that means me making a kit that is similar to spl I will do it. Spl sells their brackets only, for $179 so mine for $100 doesnt sound horrible, and if i get a good source on rotors(which i am in the works with) I may be able to offer a full kit for cheaper than what spl sells. maybe even conversion lines and calipers, although that would put my kit in a price range that wouldnt sell as much and i dont want a bunch of stuff sitting around when i can move what you guys want. Thank you for your oppinion, i am trying to take in as much critisism and oppinions as possible, these parts are for you guys, i want to make what you guys want and make it reasonable.

[HyperTek]

Hey dont forget you would also have the 300zx z32 guys interested in these as well so that should open up your market, and maybe the aussie and euro guys in other countries. =D

[timtiminy]

yeah i havent forgotten the 300zx guys dont know too much about the skyline guys since its overseas, kind of want to keep it here for the time being, but good suggestion. thanks a bunch.

[wilfonzo]

[QUOTE=timtiminy]wilfonzo: if you do a 4 lug redrill on the cobra rotors you wont be needing the hub rings because you will be drilling the exact size lug holes to keep the rotor solid and centered.
I think i may steer clear of the hub rings and go with spacers for the lugs/lug holes on the cobra kit which will eliminate any possibility of the rotors sliding because of the play on the lug holes. and it will keep the rotor solid and centered.
QUOTE]
good call, didnt even think about that...

maybe i missed it but whats an est. price of brackets + hardware. and what year cobra's are we talking here?

[LB.Motoring]

again. z33 ftw.... With the cobras, sloppy stud holes, which is really bad idea.. you have to remmber there will be that back and forth slop on and off the brake, but with even with the hub centric now its putting extreme stress.....Also the rotor face is too shallow, people allready have problems with brake clearance as it is....

id say, z33 let the buyer worry about rotors.. I allready found me a set...cheap!

[Slidin240Wayz]

If you make like 3-4 inch extensions, i'm down for the cobra setup with R33 calipers.

Carlos

[turtl631]

The cobra setup could be so cheap with the right rotors, I don't see why you wouldn't do it. Plus there's NO COMPETITION. Seems like a no-brainer to me. From the pics you posted, the brackets look much simpler as well, which is nice. Just have to figure out a good solution to make them XXX-centric.

[LB.Motoring]

The cobra setup could be so cheap with the right rotors, I don't see why you wouldn't do it. Plus there's NO COMPETITION. Seems like a no-brainer to me. From the pics you posted, the brackets look much simpler as well, which is nice. Just have to figure out a good solution to make them XXX-centric.

with the correct rotors. I'd Like to see me a set of cobras good face offset.

[HyperTek]

3000gt VR4 Rotors.. since they are from a japanese car, my guess is the bore might be simular and shouldnt have the nasty stud holes.. and the back spacing is prolly jus as bad as the cobra rotors.. but these rotors are cheap too so I would suggest these.

[LB.Motoring]

Oh yah there cheap, even in name brand...

http://streetbeatcustoms.com/rot168460320-d4.html

mmm face... looks like shallow tho.. =|

http://images.r1concepts.com/images/31004.jpg

http://us.st11.yimg.com/us.st.yimg.com/I/streetbeatcustoms_1917_376581999

[timtiminy]

well the stud hole slop wont be a problem on the cobra rotors cause i am going to do spacers that will make the cobra lug holes smaller to fit the nissan studs instead of hubcentric rings. there will be no slop and they will be centered. I will look into 3000gt vr4 rotors as an option.

[slideways2004]

well the stud hole slop wont be a problem on the cobra rotors cause i am going to do spacers that will make the cobra lug holes smaller to fit the nissan studs instead of hubcentric rings. there will be no slop and they will be centered. I will look into 3000gt vr4 rotors as an option.

please please look into the vr4 rotors b/c i have heard that these rotors will fit under some 16" wheels. and that would be a big plus for me

[chmercer]

vr4 rotors bust off at the hub, bad stuff.

[zads]

again. z33 ftw.... With the cobras, sloppy stud holes, which is really bad idea.. you have to remmber there will be that back and forth slop on and off the brake...

http://static.flickr.com/28/45764606_82ac327354_m.jpg

You really think the rotor will move after you torque down the lugnuts??

http://pic20.picturetrail.com/VOL1271/4359802/10488487/193099667.jpg

I've run the cobra rotors without the lug spacers (with the "slop"), autocrossed it for a full season, done track days, etc,. I assure you, the rotor isn't moving back and forth.

Only if your lug nuts were torqued to like 2 ft-lbs, the rotors would only move in one direction and stay there. Only when you go in reverse and hit the brakes, would the rotors rotate in the other direction relative to the wheel.
But if your lug nuts are at 2 ft-lbs at anytime, you should sell your car and go buy a tricycle. :smash:


I'm running the cobras with Z33 wheels (17"), there's plenty of clearance left all around the brakes.

[timtiminy]

Slidin240Wayz: I doubt 3-4in extensions would be necessary, probably 1in would do it maybe 2 at the most.plus you wouldnt want all that extra line risking the possablity of it getting caught up on anything.

okay so are vr4 rotors a bad way to go? seems to be a possibilty for 16in rim guys...would only be good for z32 calipers and they will have to be offset like the R33 brackets are in the pictures.

[slideways2004]

what else i was thinking about the cobra rotors were get them redrilled with the right size hole. they'll be the same bolt pattern just with the smaller hole. then it will look like a 10 hole universal wheel. i think this combined with the hubcentric ring would make it really stable

[chmercer]

the fact that the holes are the wrong size dosent matter at all as long as you have a hub ring. as long as the thing is centered itll be fine. now if you tried to run them with no lug spacers and no hub spacers, it would probably shake like crazy.

[wilfonzo]

those "r1concept" VR4 rotors are the same price as the autozone "duralast" cobra rotors... VR4's = more bang for the buck

[chmercer]

as i already said, vr4 rotors are a shitty design that is prone to breakage, like everything mitsubishi makes. I hardly see how they are more bang for the buck considering they are smaller than cobra rotors. also the cobra rotors wont kill you.

http://www.team3s.com/Images/img08l.jpg
http://www.team3s.com/Images/img14l.jpg

hella "bang for your buck".

[Mirage]

good thing you gave the whole story, wouldn't want sheep to be mislead or anything :blah:

http://www.team3s.com/FAQbrokenrotor.htm

3/s owners know powerslots are shitty for the car, the owner himself claimed the porterfield was below spec on rotor thickness, a cryo treated rotor, which makes metal brittle, after 3 track days, one guys occurance, on non stock calipers. I cant think of any other occurances the 2 years I read 3si

-former '93 vr4 owner here

i'm up for any form of ecr33 brackets, be it track or cobra, but i'd lean towards track if it was one or the other.

[wilfonzo]

point made, i guess cobras are the better buy then

or those porsche calipers are just hella strong.. j/k

[chmercer]

good thing you gave the whole story, wouldn't want sheep to be mislead or anything :blah:

http://www.team3s.com/FAQbrokenrotor.htm

3/s owners know powerslots are shitty for the car, the owner himself claimed the porterfield was below spec on rotor thickness, a cryo treated rotor, which makes metal brittle, after 3 track days, one guys occurance, on non stock calipers. I cant think of any other occurances the 2 years I read 3si

-former '93 vr4 owner here

i'm up for any form of ecr33 brackets, be it track or cobra, but i'd lean towards track if it was one or the other.

dude, shut up. vr4 rotors are shit. there is like a million instances of them breaking off at the hat. that was just the first thing to show up when i searched broken vr4 rotors. im not going to waste my time googling up a heap of pictures for you.

[timtiminy]

what does everyone want??

[Slidin240Wayz]

Stick with the good stuff, z33.

Carlos

[ixfxi]

i have the track model z33 brakes.

they are god fucking heavy. not sure if i am going to keep them. both the calipers and rotors weigh a ton. it be more cost effective just getting a nice quality wilwood setup.

[toledo240]

hey guys im running the z32 rotors right now on 4 lug setup, If i take interested to go 13" rotors would i might want to consider the upgrade to 5-lug??? 13" is a bit bigger, yet the 4 lug is space pretty far out at 114.3 so i just want to know your opinons if it could withstand that size of rotor?

[turtl631]

Do the brackets for Z32 calipers with Cobra rotors, you'd be filling a niche that is currently vacant for a really affordable big brake setup. All the cheapasses who can't afford expensive Z33 rotors and R33 calipers, not to mention Brembo, Wilwood, etc. BBK setups will go for it. Myself included.

[Vlasic]

please, Please, PLEASE make some brackets for cobra rotors. Ill buy thoes brackets in a second if you made them. Brackets for Z33 rotors are already available.


For all of you who are concerned about using cobra rotors because of having to use a hubcentric ring and the larger lug holes; Just go look at the Maxima guys. When they upgrade to z32 calibers they use the cobra rotors and no one has ever had any problems of complaints about them. There is nothing wrong with using hubcentric rings, neither is having a rotor with larger lug stud holes. One the wheel is torqued down, the rotor isnt going anywhere.

[CylonFrakker]

has anyone considered lexus 1995-2000 LS400 rotors they are like 12.6" and are 5x114.3 the stud bore should be about the same. Also consider the Supra TT rotors which are just about 12.71" and can be had cheap from RockAuto.com $16 bucks a piece. Good luck and let us know. Migh also consider an adapter for Supra TT calipers or LS400 calipers they have larger pistons and are pretty freaking good. I would also recommend the LS400 calipers from 1995-2000 they are the best to use because they are alumium.

[turtl631]

This guy seems to have vanished, which sucks because I was looking forward to having some brackets to use the $25 rockauto.com Cobra blank rotors. What were those pics he posted; did he actually make some prototypes?

[Vlasic]

Ya i was looking forward to them too. I was gonna go with the Z33 rotors, but the SPL bracket is so expensive.

[timtiminy]

I still have everything in the works guys. sorry about not keeping up with this thread. it has been a hassle trying to find someone to do small machining runs and still be able to keep the cost down the problem i am running into is that noone wants to do 50 pieces they want to do 5000 pieces and when i do find someone that will do a small run they want a ridiculous amount of money per piece, so that in turn will increase the cost to the consumer/you guys and i dont want to do that. My whole reasoning for making these is to offer a great product for a great price. hopefully things will start to pull through. I still have to talk to someone i know who machines so at the very least he can make a few brackets for those of you who are serious about buying them in the mean time till i get a good size run made. I'll try my best to keep all of you updated.
-Tim

[turtl631]

Cool, thanks for the update. I appreciate trying to keep the price down, because frankly, I'm not gonna buy these if they're close in price to the SPL ones.

[timtiminy]

okay well i finally got some brackets cut. waiting on the hubrings. hopefully a week or so and i'll have the kits ready. here is a pic of the 2 brackets. sorry it has been forever....
http://i41.photobucket.com/albums/e273/timtiminy/brackets.jpg

[timtiminy]

I like the fitment of the z32 caliper with the bracket and cobra rotor. there is practically no pad overhang. the r33 bracket is a different story....there is about 5mm of pad overhang so i redrew the part and hopefully i can get them remade, as i am not happy with the fitment right now. I'll post pics of the z32 caliper mounted with the bracket and cobra rotor once i get my camera working again...dont know what happened?looks like the shutter is stuck closed...??

[babowc]

nice..
put medown for a cobra bracket :)

[MyLevinGTZ]

i too am interested in your setup. I have R33 brakes and hubs all around so i'd be interested in the bracket for the cobra (or what ever) as long as it's for the R33 caliper. hardware included. i can source rotors unless you can get em cheap, no biggie.

please email me if you get this sorted out because i've got a terrible habit of not tracking these threads.....

[email protected]

thanks again, good job on doing all this work too.

[timtiminy]

okay i got the camera working. the shutter was stuck closed or something...I took the thing apart and opened it up, put it back together and it seems to work...dont know if i jacked something up that i dont know about though...I'm not a digital device repair man...
Here are pictures: first one is the z32 caliper mounted on the bracket and the cobra rotor on the hub. second is showing the pad overhang on the z32 pad with the cobra rotor. its very minimal only 1mm at the most.
http://i41.photobucket.com/albums/e273/timtiminy/DSCN2474.jpg
http://i41.photobucket.com/albums/e273/timtiminy/DSCN2471.jpg

[turtl631]

Lookin' good. I'm down for a set of Z32 caliper/Cobra rotor brackets and hubrings as long as the price hasn't gone way up. I have 17" Z33 wheels now for daily driving so I don't have to worry about wheel clearance, hooray. Email is rrozyckATgmailDOTcom, shoot me an email when they're done and you've got a customer.

[harleys]

i'm also interested. put me on the top of the list. :)

[Lordrandall]

timtiminy - I don't know if it is too late, but I have a friend who makes the Cobra brake hub rings for Maximas. They would fit 240's as well.

If you've already made the rings, no big deal.

What's the latest with brakes that will fit under 16" wheels? I have the z32 brakes already and some r32 GTR wheels.

Thanks!

[timtiminy]

Lordrandall: MWS Motorsports sells a kit for the 300zx that is suppose to fit under 16" wheels but runs $550. pm me the info, i think i know who you are talking about.
I still havent heard anything from the machine shops that i have contacted. hopefully i can get those hubrings started this week.

[timtiminy]

oh yeah i forgot to mention this but those of you with Q45/J30 calipers can use this kit as well. Use of the q45/j30 calipers may allow for a smaller wheel as well but not sure how much smaller.

[Lordrandall]

PM sent, I think there are a ton of options here.

:)

[turtl631]

Any word on this? I saw the thread about your fire, sorry about that dude. Hopefully you can rebuild with that other S13. And rock some mega 13" cobra rotors on it :)

[C. Anderson]

Are you still working on these? I'm looking foward to this and I have money in hand.

[timlush]

Interested here also.....

[GoodOl'S13]

what ever happened to this. im looking for a brake upgrade.

[sil80drifter]

Yeah did this end up coming along?
Anyone buy the brackets?
Anybody out there?
...



sil80

[timtiminy]

i have 5 sets of brackets ready to go but no hub spacers so until i get those i wont be selling the brackets. sorry guys i've learned that machine shops are hard to deal with. hopefully i can get these out for you guys. I'll keep you all updated though

[SicBastard]

Please pm me when they're ready.

I'll take a set of cobra to z32 adapters asap.

[Hooorahh!]

pm me when there ready ill probably be up for a set .. please pm me ur contact info as well as location and so on so that when there ready i can just pick a set up =-)

[sil80drifter]

Can Maxima guys use your brackets for their 300ZX/Cobra swaps?

Also, I hear if I have a 4-lug, I don't need the hub centric ring, as I'll be re-drilling the rotor, and the new holes will center it just fine.

sil80

[Lordrandall]

Can Maxima guys use your brackets for their 300ZX/Cobra swaps?

Also, I hear if I have a 4-lug, I don't need the hub centric ring, as I'll be re-drilling the rotor, and the new holes will center it just fine.

sil80

Depends on how he made the bracket. But there's already a guy on Maxima.org that makes a bracket for Maximas and the hubcentric ring.

[MyLevinGTZ]

i just want to confirm, i have the complete R33 rotors and hubs on my car. this kit will work as well right?

i'm still interested. hell, i can try it out for the price.

[timtiminy]

I would suggest the hubcentric rings even with a redrilled rotor for a 4 lug.
I will have the r33 kits as well, its a little different than the z32 kit, but i will have both.

[sil80drifter]

Depends on how he made the bracket. But there's already a guy on Maxima.org that makes a bracket for Maximas and the hubcentric ring.

Lordrandall, Jeff says hi =]
He also says that although his brackets look similar to the ones Tim makes, for Maximas the spacing may be different, and the caliper will sit oddly offset toward the rotor when used on a 240SX.... but I was under the impression that both Tim's and Jeff's brackets were the same exact thing, dimensionally
(3/8" thick, same bolt spacing, etc).
Can you comment?

sil80

[timtiminy]

the brackets may have the same offset and bolt spacing i'm not sure as i don't have any maxima measurements to go off of.

[turtl631]

Any update on this? Me wants Cobra rotors D)

[Lordrandall]

Lordrandall, Jeff says hi =]
He also says that although his brackets look similar to the ones Tim makes, for Maximas the spacing may be different, and the caliper will sit oddly offset toward the rotor when used on a 240SX.... but I was under the impression that both Tim's and Jeff's brackets were the same exact thing, dimensionally
(3/8" thick, same bolt spacing, etc).
Can you comment?

sil80

Haha, nice. Jeff and I go way back.

Yes, the spacing may be a bit different because you have to shave 3mm off the radius of z32 rotors to fit z32 calipers on a Maxima. So there is a 3mm difference there between z32/240sx/J30 and the Maxima. You could technically run Jeff's brackets on a 240sx with the Cobra rotors, but you would have more pad overhang that would be optimal. Best to make custom brackets for the RWD Nissans.

[turtl631]

So Timtiminy...any progress?

[Gjohnson7]

Depends on how he made the bracket. But there's already a guy on Maxima.org that makes a bracket for Maximas and the hubcentric ring.

For those wondering about Maxima's and z32's. Matt sells these for the Maxima's and some run the 2004 Maxima rotors because there really close in size to the Cobra rotors.

http://www.blehmco.com/brakes.htm

[turtl631]

Timtiminy, I'm having my friend contact you, he has access to some machine shop equipment and could probably get rings made up for you if you have dimensions. Clearly, I want to get these things on my car. :)

[Lordrandall]

For those wondering about Maxima's and z32's. Matt sells these for the Maxima's and some run the 2004 Maxima rotors because there really close in size to the Cobra rotors.

http://www.blehmco.com/brakes.htm

Matt is a really nice guy, not sure how many sets he's selling these days because he moved recently. But again, a BBK designed for the Maxima will have a bit more pad overhang than is optimal. Not saying you can't use them, but there it is.

Maybe he'll make a similar kit for his 240. :)

[RUTH'LESSDET]

what ever happened with this upgrade/??

[Prok0]

Its been done for a long time, and alot of Z32 guys are rocking the 13'' stang rotors..
Guy in FL named Ash makes the brackets.

http://www.ashspecz.com/ashspec/brakes/brakes.htm

[RUTH'LESSDET]

Its been done for a long time, and alot of Z32 guys are rocking the 13'' stang rotors..
Guy in FL named Ash makes the brackets.

http://www.ashspecz.com/ashspec/brakes/brakes.htm
thanx:bigok: :bigok:

[nissans14k]

i know this is an old thread but has anyone gone forward woth this upgrade? i need just the hub ring and braket.

[sil80drifter]

I have the whole kit for the S13 for sale. I tested it and it worked great.
Please see my thread:
http://zilvia.net/f/sale-items/211892-huge-part-out-megasquirt-ii-sportmax-wheels-cobra-brakes-turbo-kit-tein-jic.html


sil80

[JRas]

http://img111.imageshack.us/img111/6604/dscn2474rj8.jpg

seems to me this rotor is too large for the caliper.. how this would stop any better than a z32 rotor that has a full contact patch?

z32 calipers using a z32 rotor:
http://www.driftclub-il.com/johnc/Nissan/Brakes/brakes.jpg

I fail to see how the cobra rotor could stop the car any quicker than the z32 setup, after all you are using the same caliper and the contact patch between the rotor and the brake pad have not been increased. the use of your brackets actually decreases that patch by what did you say 1mm?

here is a STi setup with EVO rotors:
http://img126.imageshack.us/img126/2619/picture0206qq.jpg

STi calipers have a larger brake pad and properly fit the EVO rotors :naughty:

[sil80drifter]

The reason people go with the Cobra rotor is because the AREA of the rotor is larger than the 300ZX rotor. The contact patch is the same, for both rotors, the pads are completely covered by the rotor (for the Cobra upgrade this requires slight grinding of the caliper edges so that they sit closer to the rotor).

Bigger brake upgrades are very rarely about stopping faster. Stock 240SX brake are sufficient to lock up the wheels (which means all the braking power you need to stop).

Nowhere in this thread have people claimed faster stopping times. The advantage of bigger brake rotors and pads lies in their heat dissipation abilities. Being able to stop from 100-0 is no large feat. Being able to do so multiple times over without experiencing brake fade and fluid boiling is what counts. This is achieved by maximizing the area of the rotor and pad.
The EVO/STi combo is also great. The EVO rotor is not 13" though, so fade may occur faster.

sil80

[JRas]

The reason people go with the Cobra rotor is because the AREA of the rotor is larger than the 300ZX rotor. The contact patch is the same, for both rotors, the pads are completely covered by the rotor (for the Cobra upgrade this requires slight grinding of the caliper edges so that they sit closer to the rotor).

Bigger brake upgrades are very rarely about stopping faster. Stock 240SX brake are sufficient to lock up the wheels (which means all the braking power you need to stop).

Nowhere in this thread have people claimed faster stopping times. The advantage of bigger brake rotors and pads lies in their heat dissipation abilities. Being able to stop from 100-0 is no large feat. Being able to do so multiple times over without experiencing brake fade and fluid boiling is what counts. This is achieved by maximizing the area of the rotor and pad.
The EVO/STi combo is also great. The EVO rotor is not 13" though, so fade may occur faster.

sil80

if this is just for heat dissipation, I'd rather build myself some brake ducts... willing to bet that would be more efficent way of heat dissipation, not to mention inexpensive.

the rotors would also have uneven wear because the caliper doesn't properly cover the full surface but mainly the outside.

[sil80drifter]

by that logic, we should all just have brake ducts and not even bother with larger brake rotors. what about smaller circuits, or bumper to bumper racing where you don't have air just going to the brakes? brake ducts only work when thee is air flow, and at good speeds nonetheless.
No, we need as big a rotor as our wheels and weight concerns allow us. Obviously the weight of the car matters a good bit, an AE86 won't need a 13" rotor, while a heavier, turbocharged, sometimes fully equipped s13/s14 will definitely benefit from one on the track. IMHO heavy track use requires both ducts and larger rotors.

Btw, the caliper NEVER covers 100 of the rotor up to the hub mount. There is always a bit of space there (a few mm at least), and the reality is that it doesn't matter; there won't be an "edge" issue due to rotor wear.
Basically, if you can get the cobra brakes, you should get them, this is the best big brake kit for the buck. If you need one, at all, that is.

sil80

[JRas]

by that logic, we should all just have brake ducts and not even bother with larger brake rotors. what about smaller circuits, or bumper to bumper racing where you don't have air just going to the brakes? brake ducts only work when thee is air flow, and at good speeds nonetheless.
No, we need as big a rotor as our wheels and weight concerns allow us. Obviously the weight of the car matters a good bit, an AE86 won't need a 13" rotor, while a heavier, turbocharged, sometimes fully equipped s13/s14 will definitely benefit from one on the track. IMHO heavy track use requires both ducts and larger rotors.

Btw, the caliper NEVER covers 100 of the rotor up to the hub mount. There is always a bit of space there (a few mm at least), and the reality is that it doesn't matter; there won't be an "edge" issue due to rotor wear.
Basically, if you can get the cobra brakes, you should get them, this is the best big brake kit for the buck. If you need one, at all, that is.

sil80

Air at low speeds is surprisingly more than most people think. A car may overheat idling or while sitting in traffic but may not overheat driving at 15mph. I doubt anyone here has brake fade issue at normal driving anyways :P at the track you're obviously going to be driving faster and cooling the calipers/rotors quicker.

I know the caliper never completely covers the rotor. My point is there a sufficient amount of free space on the rotors friction area not being touched by the brake pads at all.

I personally wouldn't spend my money on this "upgrade", not to mention I already have an Evo setup waiting.

[INeedNewTires]

not only does the larger rotor cool better, but it DOES have more square inches of contact patch. Not on the caliper itself but on the outter dimensions of the rotor. In other words it takes more material to go around the outside of a 13" rotor than an 11" rotor. So more surface area.

Another benefit is the further out you space the caliper the inertia has more stopping power. Spin a disk of some kind, and with your fingers grab it near the middle, then try near the edge. stops alot easier the farther you go outward. I'm sure someone with more technical knowledge and vocabulary can tell you the physics behind this, but you should get the idea.

Where can i buy just the brackets?

[timtiminy]

i have the z32 calipers to cobra rotor brackets, problem is the cobra rotors need a hub ring in order to stay centered and i dont have the hub rings.

[sil80drifter]

I know you are defending your choice of the EVO/STi kit. That's fine. If I had to do it over again, I'd still go with the Cobra kit. You cannot beat it's bang for the buck. Both the calipers and rotors are much cheaper, and I feel the performance will be just as good if not better. That's just my opinion.


sil80

[timtiminy]

as well as bigger rotors having a higher thermal capacity because of their size, cobra rotors have curved vanes which also assist in cooling and are alot cheaper to replace than evo, sti, or 350z rotors.
Ineednewtires: i think you are refering to the additional torque that having bigger rotors gives you on braking. torque is expressed as radius times force so if you have a larger radius (bigger rotor) more baking torque is made so it should make a difference in how quickly you decelerate; that is before the time the tires lock up.

[JRas]

I know you are defending your choice of the EVO/STi kit. That's fine. If I had to do it over again, I'd still go with the Cobra kit. You cannot beat it's bang for the buck. Both the calipers and rotors are much cheaper, and I feel the performance will be just as good if not better. That's just my opinion.


sil80

I like how the brackets can be had for the cheap, along with the rotors but unless I see some hard evidence showing it actually increased braking and brake fade by a substation amount I have my doubts. I have no first had experience with this setup, so I spoke to gumball who told me over aim that he did in fact try all three setups and there was an increase in performance with the cobra rotor, however he did state his STi setup is superior :P

I won't knock it anymore, but I'd still like to hear a before and after story from someone in the thread.

[INeedNewTires]

if anyone has the bracket for Z32 caliper and Cobra R rotor i'll pay them just for a detailed measurement or trace outline of one! otherwise WHERE CAN I BUY THE BRACKETS ALONE?!

Someone needs to set up a group buy on these bitches, their worth the money imo

[timtiminy]

i have the brackets alone. you will have to figure out hubrings and hardware though..