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Guys,

My engine will be finished shortly and i was wondering the boost i will be able to run on pump fuel, Optimax Extreme

RB30 Bottom End

RB26 Top End

9.0:1 CR

T04Z 1.00

Ported

HKS Cams etc

THanks guys

how long is a piece of string really.

until you get in onto a dyno, and get the tuner doing (hopefully) what he knows best.

Then there is no real way of telling to be honest.

Every car is different in its parts etc etc so its really an impossible question to answer with little more than a guess

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20 psi will get you there as I have done this on my GTR with a RB26 (400kw). Others have also acheived this, same turbo, boost, cams. A note on this is that head work is required to lower flow resrictions You can get this running 260 cams or more if you run larger cams. Running 25psi will get you 450-470 mark as R32-GTS got 468kw with 25psi running 272 cams.

This of course will all depend on your tuner, but the engine is capable. Even more so with a RB30 bottom end - very nice :)

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272 cams, some nice lift say 10.2 or more, big exhaust system and fuel setup, I'd say 470-480awkw running 26psi and push the T04Z all the way!!! Check on R32-GTS results which was on Ultimate 98. Running Extreme is good for another 10-20kw on top so I don't see a problem. This is very similer to a setup I want :)

BTW running 9.0:1 CR is so very nice, don't forget about good quech.

cheers

Adam

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