the intake that goes over the valve cover will not cause any defects, it's only made like that for the pure purpose location of parts "exp: turbo, I/C, etc"
If you guys are looking into the RB series, why not go with a RB25DE head on a RB30 block.
The RB25 and RB30 both run a 86mm Bore standard.
The difference is only in the stroke. you can bolt an early RB25DE head straight onto a stock RB30 block.
It gives you 8.3:1 compression and is ideal for turbo charging.
DYNO WITH 100% STOCK N/A INTERNALS MADE 320 kw AND 1250 nm AT ALL 4 WHEELS WITH A SLIPPING CLUTCH.
and dont try to bore it, Your better off to keep the bore at 86-86.5mm to keep the strength.
