Max Power

[Reese69]

ok

if i was to build bottom as strong as i can - ie max hp

and if i was to build a 25 and a 26 head with all the same mods and built as strong as possible and right turbo ect

would there be a big horse power difference?

sorry if this is somewhere but i have not really found an answer anwhere.. whats ppl opinion..

[R31Nismoid]

No difference. Turbo will decide the power.

You'd just run a bit more boost and build the head differently if going 2.5ltr or 3ltr

[Reese69]

thanks that helps i have all external bolt ons for a 25 head so that will save me a fortune

[Deathwish]

Well i'm running a standard internals RB25 with cometic head gasket with greddy/trust inlet/exhaust manifolds along with 740cc injectors and turbonetics 700bhp turbo. Im putting out 549bhp and abuse the engine every time i use the car.

Im changing to an RB30 and looking to get 650hp with standard internals.

Im going to build a forged internals rb30 while i run the standard one and will be aiming for 800-850bhp.

Im using an OS Geiken triple plate clutch thats good for 1000bhp.

I've been looking at the Jericho 5spd box.

Anyone have any tips for other types of box could handle that power?

Thanks

[jangles]

The mods will vary between heads slightly, hydraulic lifters vs solid in the 26. Unless you convert to solid lifters.

This will restrict your rev limit somewhat... But people make massive power with hydraulic lifters still.

from all reports that clutch is going to destroy gearboxes quicker than others.

PPG dog box will handle that power. So will stock, depending on how you drive it.