Definitive Guide To Building 300-330awkw Gt-r

[Chopstik]

hey guys, basically ive rebuild my engine bottom end similar to (piranha) , with tomei cams and gears, and im using -5s. Using the standard fuel pump, my car is about 320awkw. Im using 750cc injectors with standard rail. Sorry for this stupid questions, but :

1. With the aftermarket injectors,do u reckon i should change my stock rails?

2. Is it advisable to change to 1000cc injectors for better performance?

What else i can do to increase my power? Thank you.

p.s: this is subjective, but which is better, open pod or the stock box?i was told better to use stock box(cooler air)

cheers.

[levinboy]

Change fuel pump to nismo or similar.

Stock rail is fine

How much power do you want will determine injector size.

Personally I would

Stick with stock airbox

How much boost you running??

Put 20+psi through them and you could get close to 380awkw with those turbos

[Piggaz]

p.s: this is subjective, but which is better, open pod or the stock box?i was told better to use stock box(cooler air)

cheers.

I have so far made 420 rwkw with a standard R33 Series 3 airbox. There is nothing wrong with them.

[Chopstik]

Thanks guys!

[Brezza]

keep the std airbox

nothing wrong with them at all.

keep the standard rail, i am using the std rail with 1000cc injectors and it works fine

i'd stick with what you've got, the only thing i would change is the fuel pump.

a bosch 040, 044 or walbro or jap (tomei, nismo) will be fine.

if you can run over 20psi, do it to really wake up the -5's

[piranha]

Thought id give a quick update.

I put a pair of -7s on and i love them. They just feel so good after having early nismos (especially ones that were rooted lol)

Pulled 261rwkw at 1 bar so pretty happy with that for the moment. That was with std injectors/pump/afms so next step is to upgrade those and shoot for 330rwkw.

(although i have started collecting bits for a dirty thirty conversion so may just have wait for that lol)

Cheers

Luke

[PSI-FED]

Everyone riding stock airboxes - yes they are awesome and do the job well but you have a GTR fellas, enjoy the gorgous sound of turbo spool / induction !

[R31Nismoid]

Prefer performance over hot air.

plus you get heaps of noise even with a stock airbox. Intake l, turbo spool and BOV teeter-totter etc.

[sinistaGTR]

Ok so I have gtss turbos, nismo pump, injectors, apexi pods or airbox with nismo filter (depending what I feel like at the time lol). Currently running a power fc d-jetro but changing to haltech platinum pro inthe next few months.

I'm looking into cams. I'm getting cam gears, doing the water pump, timing belt etc all at the same time so why not do cams lol.

I'm a bit confused on what to get.

The tomei type b 260 in/ex with 9.15 lift or

Hks 264 in/ex with 8.7 lift (other hks cams with same lift are 256 or 272).

Appreciate your input into cam selection for my set up. Please don't post dont worry about cams or there not needed lol.

[Rolls]

My mate put his pod via a silicon joiner through the stock IC hole into where the wheel arch stock front mount is located. The difference is night and day, but what about water/mud in winter etc, do you guys see any issue in mounting it here? It seems like such a an easy and effective modification.

Edit: stock place in a GTS-T, so I guess you guys would need to make another hole, but regardless thoughts?

Edited December 27, 2011 by Rolls

[Piggaz]

Are you going to relieve the head for bigger lift or stick with drop in's only?

[sinistaGTR]

Drop ins onlyG

[sinistaGTR]

can anyone shed some light

[N1GTR]

Tomei.

[GTRsean]

Ok so I have gtss turbos, nismo pump, injectors, apexi pods or airbox with nismo filter (depending what I feel like at the time lol). Currently running a power fc d-jetro but changing to haltech platinum pro inthe next few months.

I'm looking into cams. I'm getting cam gears, doing the water pump, timing belt etc all at the same time so why not do cams lol.

I'm a bit confused on what to get.

The tomei type b 260 in/ex with 9.15 lift or

Hks 264 in/ex with 8.7 lift (other hks cams with same lift are 256 or 272).

Appreciate your input into cam selection for my set up. Please don't post dont worry about cams or there not needed lol.

I'd go the tomei's, only because they have more lift and they give more torque from that compared to the HKS cams. Have driven R's with both..

Each to their own

[sinistaGTR]

thanks guys

[Sinista32]

A question for the more knowledgable.

Wanting to know with a built RB26, supporting mods with -7's optimal RPM and boost setting PSI please.

Tomie Type A poncams 260 9.15

Chasing 300 or so awkws

Let me know if you need more build details

[N1GTR]

Might want to check the type a specs.

Dumps, exhaust and cat converter all make a difference. Aim for 24 psi which will trail off to about 22 by redline

[Sinista32]

Thanks Steve-o.

Xforce dumps, 3.5" all the way through (decat). These are in 260 / ex 252 - 9.15

24psi it is.

Set - 8000rpm ?

[N1GTR]

I would gone different dumps, but for 300/320awkw it's not going to make much of a difference.

24psi peak, 8000rpm will be fine. Set the limiter for 8200 or so and fit a shift light to go off at 7500rpm.