Q45 brakes on the front only

[aziankingz]

Are there any issues with putting Q45 brakes only on the front of a s13/s14? How much better is the stopping power when having Q45 brakes on the front and stock brakes on the rear?

[TanaMU]

no problems, stopping power is much improved IMO. depends on what pads and rotors you buy, but even stock q pads/r like I have are a noticeable improvement.

[TheArkitekt]

direct bolt on for s13. i noted a much better stopping power and a significant decrease in brake fade at the track.

[UNISA JECS]

Without a doubt there is more brake torque generated with these Q45 brakes up front, but dont expect yoru stoping distance to decrease, the 11" rotors up front move your brake bias even more towards the front making it nose dive more during braking and you'll be gettings less traction from the rear because of this unloading effect on the rear tires.

Just cause its easier to lock up the front brakes doesn;t mean you have better brakes, its all about increasing brake torque while maintaining the correct ratio of front to rear brake bias, a good rule is dont deviate away from the stock front and rear brake bias, just increase the brake torque. If you do soemthing to teh front you need to do the rear to keep the balance.

But all said amd done Q45 brakes kick ass, I like them better than my Z32's but I perfer teh looks of my Z32's =)

[w0nderbr3ad]

I love my q45's. Saved my ass from rear ending a car the other day from sudden braking. Awesometown. Just get good pads all around and you'll be set.

[ANVIL]

But all said amd done Q45 brakes kick ass, I like them better than my Z32's but I perfer teh looks of my Z32's =)

ive heard a few people say they are as good if not better than a z32 brake setup. im doing the Q45's up front with SS lines, stock R calipers with new pads/rotors and ss lines. got everything except for the F pads/rotors. cant beat the price for this upgrade, you dont even need to upgrade the master cylinder.

[Fred Allen Burge]

This is what I'm running on my S13 but I got mine off of a newer Q, 98 I believe. I had to drill out my spindles to accept the larger bolts that the newer Q's require (same as Z33 brakes). So, be aware of that.

But, they lock up on snow/ice w/ about 1oz of pedal pressure while going <2 mph, great fun! Not. I do like them generally speaking though during regular weather/road conditions, they "feel" very powerful to me.

Fred

p.s. Oh ya, can't run stock 15"s with these that I used, kinda sucked. Good thing for me I was in the process of upgrading wheels at the same time.

[UNISA JECS]

If you have problems locking up to easily on Q45's just step up 1 size or 2 on your brake master cyclinder.

Stock S13 brake master is 7/8"

Upgrade to 5/16" or 1", this will tame down the Q45 from acting like a on and off switch, or just learn to modulate teh pedal better, but its a better idea to get a slightly larger BMC.

[OptionZero]

if u wanna stop faster, get better tires

then worry about brake balance

[gunluvS14]

if u wanna stop faster, get better tires

then worry about brake balance

best reply in this thread

[SoSideways]

Yeah, using Asad's calculation methods, I believe with Q45 brakes front and stock rears, it comes out to around 75% front brake bias, whereas stock S13 brakes are around 70% front brake bias.

With Z32 fronts and stock S13 rears, it comes out to like 73% IIRC, but I do know that if you go with Z32 fronts and stock S14 rears, it balances back out to 70% front brake bias.

This is assuming we're running OEM type BMCs and the same type of pad front and rear (same compound).

[ANVIL]

im going to see how i like mine with the stock bmc. anybody with q45's up front upgrade their bmc? what one did you use and how much of a difference did it make?

[UNISA JECS]

The best combo thats puts you @ 0.2% from stock balance is Z33 12.76" front rotors and the Z32 11.5" rear rotors. This is my setup specifically.

[JohnJohn86]

im going to see how i like mine with the stock bmc. anybody with q45's up front upgrade their bmc? what one did you use and how much of a difference did it make?

I have a S14 with Q45 front, porterfield R4S pad all arround and using a Automatic S14 MC. Feels much better with bigger MC.

I want to upgrade the rear as well, what's the best solution out there?

[!Zar!]

if u wanna stop faster, get better tires

then worry about brake balance

It's all about the BBK with all seasons.

[OptionZero]

8 piston, 14 inch slotted x-drilled 10 piece rotors all around
16x6.5 +40, 205/50/17 falken ziexes!

[Flicktitty]

will Q45 brakes fit up front of a 15X7+0? wheel?

[bbejj123]

if your tracking your car be sure to upgrade all brakes so it will handle correctlybut just for daily driving itll be fine

[98s14inaz]

will Q45 brakes fit up front of a 15X7+0? wheel?

Why do people insist on putting huge brakes behind such tiny wheels and tires?

Put some decent sized wheels and tires on your car then put some bigger brakes.

[!Zar!]

will Q45 brakes fit up front of a 15X7+0? wheel?

Yes, they will.

That's pretty much the only reason I see anyone should run Q brakes is so they don't have to run into wheel fitment issues that the Z guys deal with.

[The Chad]

You can also use J30 brakes (2 piston sliding like the Q45's)for the same affect and more easily accessible for some at local pick and pulls. GL

[Flicktitty]

Why do people insist on putting huge brakes behind such tiny wheels and tires?

Put some decent sized wheels and tires on your car then put some bigger brakes.
Cool, you wanna pay for me to get some new wheels?

And not anyone want's 16,17,18,19" wheels on there S13.

[murda-c]

shh don't know know of all the perfomance bonuses you get from larger, heavier wheels?

[OptionZero]

if you're still using 15x7 wheels you don't have enough tire to require bigger brakes

just stay with stock until your driving requires upgraded brakes

[ILoveMyRHS13]

I would HIGHLY recommend these brakes. I also have a Z31 master cylinder, which helps the bias IMMENSELY.

[nasadriver]

i have had this setup for a long time but with shitty duralast stockish pads, don't grad bearly enough. after driving my friends wrx with hawk hps that bite like a gator i really want new pads.

what pads do you guys recommend for 90 percent track usage with q45 rotors and calipers? i have had trouble locating high performance pads for those rotors considering the q45 is far from a high performace cars.

[ANVIL]

im pretty sure hawk makes Q45 pads

[smelly240]

so you all know - j30 and early q45 brake pad pn's are the same... the calipers only diff is the placement of the part that holds the banjo bolt in place.

[Flicktitty]

if you're still using 15x7 wheels you don't have enough tire to require bigger brakes

just stay with stock until your driving requires upgraded brakes

what about more motor then tire? 400+whp 2J'd 240sx... i needs to stop too.

[SoSideways]

im pretty sure hawk makes Q45 pads

They make HPS pads for them, which is their street pad... nothing more aggressive other than those...

what about more motor then tire? 400+whp 2J'd 240sx... i needs to stop too.

If you built your car with more power than tires/brakes to begin with, that's YOUR FAULT for not being smart enough to think ahead.

[Flicktitty]

They make HPS pads for them, which is their street pad... nothing more aggressive other than those...



If you built your car with more power than tires/brakes to begin with, that's YOUR FAULT for not being smart enough to think ahead.


:s101:

Your right...the car doesn't run a 215 up front and a 235 out back on a 7" rim, so instead of being an asshole why not help people out?

[chriszenc]

FYI part number on the hawk HPS pads for the q45 is: HB415F.583
defiantly worth a try for 45-50 bucks, and you can order them from Pepboys...

[smelly240]

porterfield, pbr(axxis), hawk, and endless make pads for q brakes.

[S14DB]

Performance Friction also makes carbon pads for the Q45.

[nasadriver]

you guys rock thanks, what are the best of the ones listed, bested meaning which bite the hardest. this is primarily a track car not too concerned about noise or dust. thanks again. ill try the hawks first cuz i can get them from pep, but lmk which are the strongest.

[SoSideways]

:s101:

Your right...the car doesn't run a 215 up front and a 235 out back on a 7" rim, so instead of being an asshole why not help people out?

So what are you asking?

Because you're the one that was saying how you have a 400+hp 2jz motor and 15x7 wheels, and just now figured out that "oh yeah, I need to stop too".

Maybe you need to quit driving the car until you save up enough money for some wider rims first instead of sitting on the internet forum crying to people about not having enough money to buy decent wheels and tires to stop a 400+ hp 2jz powered 240.

Perhaps you should have spent some of that money on the 2jz and spent it instead of wheels and tire, and brakes.

Just my take.

Why have a car that has 10000000000 hp and can't stop, over a car that has 300hp and can stop on a dime? The 10000000000hp car will get you killed, while the 300hp car will be fun as hell.

[Flicktitty]

So what are you asking?

Because you're the one that was saying how you have a 400+hp 2jz motor and 15x7 wheels, and just now figured out that "oh yeah, I need to stop too".

Maybe you need to quit driving the car until you save up enough money for some wider rims first instead of sitting on the internet forum crying to people about not having enough money to buy decent wheels and tires to stop a 400+ hp 2jz powered 240.

Perhaps you should have spent some of that money on the 2jz and spent it instead of wheels and tire, and brakes.

Just my take.

Why have a car that has 10000000000 hp and can't stop, over a car that has 300hp and can stop on a dime? The 10000000000hp car will get you killed, while the 300hp car will be fun as hell.


Please show me where i said I DON'T HAVE THE MONEY!

The car isn't done yet, and i'm not giving up these wheel, I like them too much to get rid of them and i also have waaaaay too much money put into them (about $1000) to just "Get wider wheels" but thanks Cause i figured out that some people CAN run Z32/Q45 brakes behind 15' so no need to be an ass, either help someone or don't post. i thought you as a premie would know better. :duh:


And to rephrase what i askesd

"Does anyone know of Q45/Z32 brakes will fit on a 15X7 +0 Rim?"

Thanks.

[SoSideways]

Cool, you wanna pay for me to get some new wheels?


Please show me where i said I DON'T HAVE THE MONEY!

The car isn't done yet, and i'm not giving up these wheel, I like them too much to get rid of them and i also have waaaaay too much money put into them (about $1000) to just "Get wider wheels" but thanks Cause i figured out that some people CAN run Z32/Q45 brakes behind 15' so no need to be an ass, either help someone or don't post. i thought you as a premie would know better. :duh:


And to rephrase what i askesd

"Does anyone know of Q45/Z32 brakes will fit on a 15X7 +0 Rim?"

Thanks.

Z32 brakes are huge. You're more than likely going to need to use spacers to clear Z32s.

Q45s are going to be easier to fit.

Either are probably going to be too much for any tire you can fit on a 15x7 rim, which is why people told you to get better wheels. A 205/55/15 or whatever just isn't enough rubber for most of anything.

BTW I'm done with replying to you.

[nasadriver]

what about more motor then tire? 400+whp 2J'd 240sx... i needs to stop too.


you are running THAT engine and THAT power and are complaining that people are telling you to get wider wheels? you sound like an idiot man. the q45 brakes would definately fit, but you make no sense. the brakes won't help you with those size tires and you need at least 245's with that kind of power for your car to even move in a straight line.

[koukimonster139]

stock brakes and quality suspension components (tuned right ugh) will stop better than any junkyard z or q45 brakes

[OptionZero]

stock brakes and quality suspension components (tuned right ugh) will stop better than any junkyard z or q45 brakes using junk pads and tires

fixed that

[Nismoknightska-t]

i run q45 brakes on a 15-4 inch rim on a 400+rwhp s13.. soon to be 550+

i guess my stopping power is alright..

[nasadriver]

stock brakes and quality suspension components (tuned right ugh) will stop better than any junkyard z or q45 brakes


no they won't, bigger brakes dissipate heat better, maybe for stopping once, but not for multiple stops. and better suspension componenents aren't going to do much to help unless you are including sticky tires. q45 brakes as a base are just better than the 9 inch stock brakes.

[SoSideways]

Just did a search on Porterfield and Hawk's websites, look like they just updated their database, and now are saying that they do have R4S and HP Plus pads for the 94-96 Q45s.

Although they list it like 92-97...

[98s14inaz]

Cool, you wanna pay for me to get some new wheels?

And not anyone want's 16,17,18,19" wheels on there S13.

I rest my case.

[Cramadon02]

OK, i saw the question asked and a few maybe-ish answers. Will the Q45 Brakes clear the 15x7 Teardrops? I'm not trying to be a smart ass or anything, just need a definite yes or no

I've got the brakes sitting in a box at home and I've got coilovers on the way but i'd really rather not have to drop another G on rims and tires yet anyway. And i'd really, really don't wanna keep running on stock brakes and kyb/sportline combo for another six months. So yeah, i hope they clear.

Thanks in advance.

[LayNLow]

OK, i saw the question asked and a few maybe-ish answers. Will the Q45 Brakes clear the 15x7 Teardrops? I'm not trying to be a smart ass or anything, just need a definite yes or no

I've got the brakes sitting in a box at home and I've got coilovers on the way but i'd really rather not have to drop another G on rims and tires yet anyway. And i'd really, really don't wanna keep running on stock brakes and kyb/sportline combo for another six months. So yeah, i hope they clear.

Thanks in advance.

It takes all of 10 minutes to jack a corner up, remove the wheel, remove the caliper, bolt the other caliper on, and put the wheel on. Best answer for you since you have all the parts sitting in front of you.

[blksylv]

ya thy will, i had them behind lancer oz edition wheels which were a 15X6 +46 :(

[lilrusty]

on my s13 im runnin q45 front and rear, z32 drum assembly, steel lines, hawk pads and z32 bmc. one of my best investments to date. big difference overall...

[spooled240]

I have q45's on my fronts and I have to really step on the pedal to get them to lock up, they are not like a toggle switch like people say. I am running 255/35/18's up front though lol I get mad brake fade on fast downhill canyon runs but it's probably cuz of my autozone brake pads with the cheapest/oldest brake fluid ever..ugh

I work at pep boys and I got some overstocked hawk hps pads for the q45 for 30 bucks! I haven't installed them yet as I want to get stainless steel lines and flush my brake fluid.

[lilrusty]

I have q45's on my fronts and I have to really step on the pedal to get them to lock up, they are not like a toggle switch like people say. I am running 255/35/18's up front though lol I get mad brake fade on fast downhill canyon runs but it's probably cuz of my autozone brake pads with the cheapest/oldest brake fluid ever..ugh

I work at pep boys and I got some overstocked hawk hps pads for the q45 for 30 bucks! I haven't installed them yet as I want to get stainless steel lines and flush my brake fluid.

thats where i got my pads from. ive had them for almost a year now with a track event on them and they still have a shit load of meat on them. autozone pads are okay but not too good for aggressive driving. they run out too fast imo. just get hawk hps pads and you'll be set

[Cramadon02]

There seemed to be a grinding when i put the Q-brakes on and spun the wheel. So, i'm still not sure if they're clearing. Think spacers would help them clear if that's the issue? If so, any recommendations on spacer size?