s14 sr20det 400whp???

[youngbrazee1]

ok i heard that the s14 notchback has trouble producing more than 400whp because of the vct. is this true?

[whiterps13]

No. Whoever told you that is retarded.

[fliprayzin240sx]

No, you just cant run as aggressive cams with VVL. You get to a point that running bigger cams will help but VVL dont like big cams. So people just ditch it and slap on bigger cams. The other reason people ditch em is cuz they like to break a lot. Theres not a whole lot of S14/15s out here with them on. They usually start ticking and shit like that.

[youngbrazee1]

im tryin 2 go 4 more of a street setup is the s14 sr20 better than the s13 redtop

[luisgonz]

No, you just cant run as aggressive cams with VVL. You get to a point that running bigger cams will help but VVL dont like big cams. So people just ditch it and slap on bigger cams. The other reason people ditch em is cuz they like to break a lot. Theres not a whole lot of S14/15s out here with them on. They usually start ticking and shit like that.

I still have it on my car, :aw:

[fliprayzin240sx]

I still have it on my car, :aw:


Dont ask me for a solenoid when it starts ticking...:keke:

My engine dont have it, my buddy's stock S15 that he shipped from the mainland didnt have it, I know atleast 4 other 14s that dont have the darn things. My co workers S14 is starting to have an intermittent tick at idle...I <3 VVL :keke:

[fliprayzin240sx]

im tryin 2 go 4 more of a street setup is the s14 sr20 better than the s13 redtop

Personally, I'd stay away from any redtop at this point, unless its an auto. Most redtops coming in from Japan are POS. These are the left over redtops that nobody wanted the last 8 yrs.

[s13silvia123]

Personally, I'd stay away from any redtop at this point, unless its an auto. Most redtops coming in from Japan are POS. These are the left over redtops that nobody wanted the last 8 yrs.

ditto on that. for the last couple of years there are crappy redtops comming. if youre lucky enough. you should of bought the redtop years ago. as have i.

[youngbrazee1]

that sucks cuz i already have one (redtop) n i had the car for 3 months and my friend told me my ball bearings were screwed. it made a horrible grinding sound so i took it off

[murda-c]

that sucks cuz i already have one (redtop) n i had the car for 3 months and my friend told me my ball bearings were screwed. it made a horrible grinding sound so i took it off

what bearings?

[fliprayzin240sx]

huh? Ball bearings?

[youngbrazee1]

i had a gt2871r or disco potato they look the same (sorry im kind of a newb) anyway it was quick but now it sits

[youngbrazee1]

the ball bearings off my turbo

[fliprayzin240sx]

So what does a fucked up turbo on a Redtop S13 engine got to do with your original question?!?! Did I miss something in this thread???

[Koopa Troopa]

Dont ask me for a solenoid when it starts ticking...:keke:

My engine dont have it, my buddy's stock S15 that he shipped from the mainland didnt have it, I know atleast 4 other 14s that dont have the darn things. My co workers S14 is starting to have an intermittent tick at idle...I <3 VVL :keke:

I don't have it.....

[aNskY]

Personally, I'd stay away from any redtop at this point, unless its an auto. Most redtops coming in from Japan are POS. These are the left over redtops that nobody wanted the last 8 yrs.


Yeah, even blacktops... my last engine was pretty much DOA (spun bearings after an hour)

[lordofthemiasma]

I bought my blacktop last january and have had no issues with the motor. it really depends on where you buy your motor from, there are still good redtops and blacktops to be bought just dont buy off of ebay and no name shops.

[sblack13]

any motor can be bad.
my first S14 SR was a piece of crap
redtops are just older thats old..
less virgin redtops out there...
S14 SR's are much easier to work on than s13 sr's.

Take the hoses for your heater core for example
they are on the right side. Instead of that lame rerouting crap on s13 motors.

buy your motor in person, inspect it!
I can't stress this enough..
your gonna be beating the shit out of it.
make sure of big purchases like these.

[bigOdom1]

mine works and it makes daily duties for an sr much better than the s13 the low end torque is much better

[dorkidori_s13]

only thing vvl is good for is helping with boost lag on small turbos...thats the only reason nissan used it with their later SRs (given redtops are prone to no boost...no boost...no boost...BOOOOOOOOOOOOOOOST...the way a damn turbo motor SHOULD be lol) they used it more as a creature comfort for people who didnt want the boost creep thing goin on (basically older people interested in a "comfortable" sports car *snickers*)

ditch the VVL intake cam and get a normal cam...not even worth keeping

[CKAMC]

you can have some interesting cams on a vtc motor, intake cam just needs to have a low lift but can have high duration (see toda cams) and the exhaust cam be a high lift high duration since its just a regular cam.

the real winner is s15 sr, since its possible to get a 2003 motor, and there is somethin else different but I cant remember at the moment besides fuel and turbo difference.

[CKAMC]

only thing vvl is good for is helping with boost lag on small turbos...thats the only reason nissan used it with their later SRs (given redtops are prone to no boost...no boost...no boost...BOOOOOOOOOOOOOOOST...the way a damn turbo motor SHOULD be lol) they used it more as creature comfort for people who didnt want the boost creep thing goin on (basically older people interested in a "comfortable" sports car *snickers*)

ditch the VVL cams and get normal cams...not even worth keeping

it also helps with fuel economy and emissions, having the profile adjustment produces better low end power.

some people are fairly ignorant with the system.

with a proper tune layout both in terms of how you build and how good your tuner is, one can produce an aditional 30~50whp over a non vtc profiled layout, with most of the power found at the low to mid end

[dorkidori_s13]

having the profile adjustment produces better low end power.

hence...helping with boost lag ;)

[ZenkiCam]

if VVL is same thing as NVCS on my RB25, i would say for low end torque reasons keep it, but if your "building" your motor ditch it.

[CKAMC]

hence...helping with boost lag ;)

less lag is always a good thing, helps us argue against mustang owners and their superchargers

[upSLIDEdown]

For crying out loud... they did not have VVL, they had VTC. There's a HUGE difference. VTC does NOTHING for performance. It's only for low end DRIVEABILITY. No performance gains are seen from it.

VVL on the other hand, is what's in the SR20VE/T. Totally different animal. More like VTEC, as it affects both cams. VTC only affects the intake cam. Unlike VTEC, however, VVL engages each side (intake/exhaust) at different RPMs. Still, of no value in this thread, since it wasn't in any of the motors, S13/14/15. Only VTC, and it was in the S14/15.

EDIT: The reason some may say it's limited here-> It's limited in the sense that you can't make a ton of power and still keep the VTC. This only applies if you're running cams. There's only 1 or 2 sets of aftermarket cams out there that will let you keep the VTC. I forget which ones. I think is a 256 or something from someone, but I can't for the life of me remember and I don't feel like searching to find it right now, but feel free to do so on your own accord.

[CKAMC]

For crying out loud... they did not have VVL, they had VTC. There's a HUGE difference. VTC does NOTHING for performance. It's only for low end DRIVEABILITY. No performance gains are seen from it.

VVL on the other hand, is what's in the SR20VE/T. Totally different animal. More like VTEC, as it affects both cams. VTC only affects the intake cam. Unlike VTEC, however, VVL engages each side (intake/exhaust) at different RPMs. Still, of no value in this thread, since it wasn't in any of the motors, S13/14/15. Only VTC, and it was in the S14/15.

EDIT: The reason some may say it's limited here-> It's limited in the sense that you can't make a ton of power and still keep the VTC. This only applies if you're running cams. There's only 1 or 2 sets of aftermarket cams out there that will let you keep the VTC. I forget which ones. I think is a 256 or something from someone, but I can't for the life of me remember and I don't feel like searching to find it right now, but feel free to do so on your own accord.

you need to read my post again

Greddy,HKS and I believe tomei make 260 cams that allow vtc to work, if you want beyond 260 duration then look into toda cams.

if anyone had read any of steve shadow's posts or talked to him he would have told you that duration moves power band and gets you hp, lift gets you torque.

vvl is based on the idea of variable duration and lift on both intake and exhaust cams, vtc is just duration on the intake cam.

auto production boss is one of the few tuners who have gone beyond 260 duration for vtc and thus created a new intake vtc cam pulley, they label it as a "requirement" when going beyond 260 duration with some of the markets vtc compatiable cams. however if one is not to exceed the lift in these easy cams on the intake side, one can get away with the stock vtc pulley and do whatever profile on the exhaust side (duration and lift). This according to a phone call to ap boss usa is what was done on their s15.

greddy has an article in drift tengoku about their vtc easy cam (the 260 duration), and do the typical promotional stuff, however earlier in the mag you will find yashio factory explaining how the vtc system works and how with their hks turbine upgrade and a set of these 260 cams, they were able to produce more low end and mid range power.

if you would like to argue this more or have a copy of the article in japanese, feel free to pm me.

spreading ignorance is not the goal of a forum, if you really have no clue, then keep your mouth shut.

[Koopa Troopa]

Any cam will work with VTC, it's adjustable gears that won't let you keep it.

I could run the VTC gear on my Tomei 270 cams if I kept the stock gear but VTC is worthless anyways so there was no point in keeping it..

[Oo_Skyline_oO]

Any cam will work with VTC, it's adjustable gears that won't let you keep it.

I could run the VTC gear on my Tomei 270 cams if I kept the stock gear but VTC is worthless anyways so there was no point in keeping it..

Just curious, why is VTC so worthless?? what are pros/cons of it??

[Koopa Troopa]

It's worthless cause it does nothing in the higher RPM's.

Not even sure how it works nor do I really care but from what I understand it retards cam timing on the intake side to help the turbo spool faster.

[upSLIDEdown]

you need to read my post again

I wasn't directing that at you. You know the difference. I got tired of reading VVL when these motors never had VVL, and that's a totally different animal. VTC is all bottom end, driveability, unlike VVL from the SR20VE engine, aimed at making more power.


spreading ignorance is not the goal of a forum, if you really have no clue, then keep your mouth shut.

I agree, that's why I was clarifying the difference in VTC and VVL.

[bigOdom1]

if you are building a car to drive daily then i recommend the s14/s15 if it is going to be a built motor then i suggest the s13. bottom line is that vtc helps low end during daily driving conditions where you merge into moving traffic and it makes it more fun to drive on the streets, compared to the s13.

[INeedNewTires]

wow this thread got way off topic.... Somebody, ANYBODY have dyno graphs for their S14 SR before (with VTC) and after (pulled VTC - added cams) so we can see the torque/hp curves.... I'll post my graph with an S14 SR with HKS 264 cams with VTC and a 2871R .64

http://i230.photobucket.com/albums/ee309/ineednewtires/dyno.jpg

remember people a peak HP figure is just a number, its all about powerband and traction when your doing ANY kind of driving, Drift/street/drag/road race, etc...

[youngbrazee1]

im a newb 2 sr20s but i didnt know that you can remove the vtc........so in the long run i should go with a s13 sr(red or blacktop???) if i plan on touge drag or drifting?

[Koopa Troopa]

I doesn't matter what motor you go with. Buy whatever your paycheck allows