Whats Next?

[FSTR32]

this is a street car with the intended squirt at the track/circuit. I am looking for more response from low-mid range. What is next on the list in terms of mods. looking for around 300-350kws. thanks guys. BTW the car is an R32 Gtst with R34 RB25 neo conversion

ENGINE MODS :

ACL Forged Racing pistons + Rings

Bored & Honed block

Fully Balanced

Linished Crank

Bronzed Valve Guides

Honed Conrods

Fully Ported and Polished Head

N1 oil pump

Nissan Water Pump

Genuine Nissan Gasket Kit

Metal Head Gasket

Microtech MT-8 Sequential Fire ECU

Strut Brace

UAS FMIC with Custom Polished Alluminium Piping

Full 3" Exhaust

Nissan fuel pump 550hp

Siemens 630cc Injectors

TURBO :

Garrett GT35r with .63 rear

Turbosmart 45mm external wastegate

Turbosmart Sleeper Series Supersonic BOV (atmo+adjust)

eboost 2 EBC

SUSPENSION:

Full Whiteline Suspension kit

LSD

Excedy Racing Clutch

R33 gts25t gearbox

Edited May 29, 2007 by FSTR32

[R31Nismoid]

Your not going to get much more response than whatever you have now. If its too laggy, the tune needs attention.

As with a .63 it should be pretty savage and on boost reasonably early 4krpm.

Cams might help, might not. Your restricted by the rear housing so options are tight... and 300rwkw will be tight to attain with the .63 as well, let alone 350rwkw which is out of reach well and truly.

What you really need is cooling and lots of it. Oil cooler of a good size is paramount, and a good radiator.

Hopefully the motor was built with the right oil mods aswell, otherwise your going to have issues.

Then some decent semi comp rubber and get at it really.

Oh, and brakes as well, stock brakes aren't going to be anywhere near upto task.

the above 3 things will see a good 5k. And will be of more benefit than trying to chase a few 100rpm of response.

[Andi]

I agree with Nismoid, with the current turbo setup you ain't going to get anything more responsive then that. Poncams on a NEO engine should net you a beefier torque curve giving you better response, but apart from changing the turbo there isn't going to be much more you can do. What power output are you pushing now?

Yep if you're going to take it to the track definately look into the engine oil modifications, oil cooler, new radiator, bigger brakes, braided lines, master stopper etc. But apart from that I'd say what you listed up there is a great all round package.

[FSTR32]

Your not going to get much more response than whatever you have now. If its too laggy, the tune needs attention.

As with a .63 it should be pretty savage and on boost reasonably early 4krpm.

Cams might help, might not. Your restricted by the rear housing so options are tight... and 300rwkw will be tight to attain with the .63 as well, let alone 350rwkw which is out of reach well and truly.

What you really need is cooling and lots of it. Oil cooler of a good size is paramount, and a good radiator.

Hopefully the motor was built with the right oil mods aswell, otherwise your going to have issues.

Then some decent semi comp rubber and get at it really.

Oh, and brakes as well, stock brakes aren't going to be anywhere near upto task.

the above 3 things will see a good 5k. And will be of more benefit than trying to chase a few 100rpm of response.

Nah its not incredibly laggy i just wanted a bit more of a push back in the seat. boost comes on about 3 and I have full by 4--4 and a half. Maybe whinding up boost should do the trick. It runs 3 stages. 5psi,10psi,15psi. What would be safe to whind it up to assuming I get an oil cooler and radiator and cams/plazmaman plenum?

What oil cooler and radiator are a good/reliable choice? and how much roughly?

What do you mean by the RIGHT OIL MODS?

thanks for response. just feel like ive hit a dead end

[FSTR32]

I agree with Nismoid, with the current turbo setup you ain't going to get anything more responsive then that. Poncams on a NEO engine should net you a beefier torque curve giving you better response, but apart from changing the turbo there isn't going to be much more you can do. What power output are you pushing now?

Yep if you're going to take it to the track definately look into the engine oil modifications, oil cooler, new radiator, bigger brakes, braided lines, master stopper etc. But apart from that I'd say what you listed up there is a great all round package.

yeh i was about to wack some poncams and a new plenum on there to see how that went but now im a little worried i should be leaning towards these engine oil mods first????

should poncams be before or after an oil cooler/new radiator?

power at the moment is about 250ish rwkw's but thats still on a light tune that I had from the run in of the motor.

Cheers for the reply

[R31Nismoid]

In a way you are at a dead end, your going to spend big money for smaller gains now (plenum/cams etc etc)

Yeah, 15psi around 4-4.4 sounds spot on. Winding the boost wont bring it on any earlier though.

It will just feel more snappy when it comes on boost. I went from 17 to 24psi and the car was totally different to drive.

It felt lazy on 17psi in a way.

Oil mods see here, if its not looked into, i wouldn't be tracking a 300rwkw RB25 personally.

http://www.skylinesaustralia.com/forums/in...howtopic=110680

Oil Cooler, as big as you can fit really. They dont come cheap if you want to remote oil filter, and then the fitting etc.

Around $600 rings a bell, and it can easily get into 800+ depending on what you go for.

[FSTR32]

In a way you are at a dead end, your going to spend big money for smaller gains now (plenum/cams etc etc)

Yeah, 15psi around 4-4.4 sounds spot on. Winding the boost wont bring it on any earlier though.

It will just feel more snappy when it comes on boost. I went from 17 to 24psi and the car was totally different to drive.

It felt lazy on 17psi in a way.

Oil mods see here, if its not looked into, i wouldn't be tracking a 300rwkw RB25 personally.

http://www.skylinesaustralia.com/forums/in...howtopic=110680

Oil Cooler, as big as you can fit really. They dont come cheap if you want to remote oil filter, and then the fitting etc.

Around $600 rings a bell, and it can easily get into 800+ depending on what you go for.

cheers. had a read of that...can you put it in laymans terms for the mentally challenged LOL.

[BAMR33]

Unless you intend to pull down you're engine down again #3 will be the only one applicable.

For response/earlier boost: Adjustable cam gears, cams, different fuel, lightened flywheel/other parts, diff gears, more tuning, larger dia throttle body, Bigger dump pipe etc. HKS or someone make an exhaust valve thing that allows some back pressure at lower rpm to help boost build up, as the volume of gas flowing through increases the valve fully opens and operates as a normal straight though section of pipe. Some people have had success with these on very laggy applications.