431.6 on stock internals.

[SHUTO-BOY]

garret GT30

[Guilt-Toy]

so how fun is this car to drive?

go well ? what about 1/4 mile run ??

[GTS-t VSPEC]

It goes very well, but so much wheelspin it's not funny:D

I'll be putting a 2-way Nismo Diff in soon, then running it at the drags, I'll let you know how I go, aslong as the time isn't too embarrassing:D

[SHUTO-BOY]

yes paul, scary is a better word

get semi-slicks please

you stopped my heartbeat one too many times

[N I B]

Shuto-boys GTS is 350rwhp with a lot of duty cycle left as is Rob77s.

[skyzerr33]

Originally posted by Steve-SST

We will sell this package in kit form soon.

whats going to be in the kit?

the custom exhaust manifold? the turbo? the waste gate? the ecu? the plenum?

anyways i'm gonna start saving

[GTS-t VSPEC]

Troy, I think the plan is to have a couple different stages of modification. The will be bolt-on internal gated turbos to fit stock manifold as the base stage, all the way up to custom manifold, extrenal gated turbo with full management.

[Kutter]

this should throw out any prior misconceptions of the tolerances of the RB25's internals right out the window......and also what we have come to think about the standard injector's duty cycle:burnout:

good one:D

[Sydneykid]

Hi guys, in case you missed it in other threads, they are unning 50 psi fuel pressure at idle with a rising rate fuel pressure regulator. So to achieve this sort of result, the injectors are exceeding their rated output by around 40%.

My previous experiences with "overdriving" injectors more than 10% has not been very good. The solenoids and springs simply don't like it. Take the risk if you wish.

Secondly the car is not driven everyday at 431.6 rhhp. I believe GTS-t Vspec quoted 360 rwhp which is under the widely accepted 450 bhp maximum for daily use on a standard internals RB25.

Hope that clarifies

[GTS-t VSPEC]

I have been driving it with the 431rwhp over the past couple days, and I must say it's a heap of fun, but in order to save my stock internals I feel that the 360rwhp is a much safer level for the engine until I get forged pistons etc.

If I do have any trouble with running the stock injectors at high pressure then I'll let you all know, but so far they've performed admirably:D

[rob77]

I'm not running any aftermarket/rising rate regulator, just a bosch 910 fuel pump, my injectors are at 70% duty cycle at 340hp. The turbo's flowing 1 bar and we havent been able to take it much higher because the stock manifold isnt flowing very well.

[«Cyph3r»]

GTS-T VSPEC

Just out of curiosity how many k's are on ur engine? Completely stock internals so far?

Jamie

[GTS-t VSPEC]

«Cyph3r», It's just recently clicked over 100K, and yes it is entirely standard internally.

[RNS11Z]

Hey Gtst-Vspec congrats on power figure. Whats the A/R rating on your turbo rear housing?

Thanks

Harun

[N I B]

Troy, you only need the Turbo kit , manifold and pump i think as you have management, cooler and exhaust already.

We tested Pauls engine first.

[skyzerr33]

Yeah Steve i would only need the turbo and manifold and wastegate depending on turbo choice.

i have an 040 intank already, may have to loss the cat and match the cooler pipes (one side is 3inch the other is 2.5)

[Jeff C]

What fuel management/computer are you using to achieve 431.6?

[IMACUL8]

Pauls running a Wolf 3D Version 4 (im pretty sure).

Dan

[Guest INASNT]

nice numbers paul

I got a 0.70 a/r front with t66 comp wheel and 0.82 a/r rear rated at 600hp turbo going on my car at the end of this week, i got the same manifold as you but 550cc injectors and a power fc with 044 bosch pump. Should i expect the same numbers as u? As i was told it would need atleast 20psi to get 300rwkw..

[R31Nismoid]

Interesting. I've run out on injectors on my car now @ 203rwkw (what is that in HP?)

Admittadly im not running a rising rate reg, but i surely wont be getting another 100rwkw out of just raising the pressure.

Also im running a Factory ECU with a chip that really hasnt had it's map changed at all.

Just speed limiter removed at this stage.

Now, i dont think my car is making anywhere near 400rwhp (im not sure of the conversion)

And my car to date has come home with 12.98 @ 108mph.

Paul... did you run the mid 13 @ 411rwhp?

If so... that's awefully low MPH for that kind of power... (if 400rwhp is more than 200rwkw)

As if you get wheelspin or not, your MPH is usually more or less the same. Just your ET that changes.