porting rev hard?

[turbo2nr]

well i got around to changing the gasket on my rev hard manifold and i noticed the flange for the t4 is way bigger then the opening on the rev hard manifold.

i know this manifold was made to use a t3 or t4 turbo, so i know the opening is sized for a t3. so if i took my dremel and opened it so that it would match the t4 turbo flange in theory wouldnt that help in spool up?

just wondering

thanks

[motoman399]

im pretty sure it will. i ported my rev hard at the head and where the turbo bolts up and i noticed a little faster spool. not too much though. i would say do it, its free power

[WDRacing]

Definitly port it, just becareful not to weaken the are where the T4 bolts to. That would be considered a MAJOR restriction to exhaust flow. Also, going from the T3 flange inlet to T4 turbo opening the exhaust gas loses velocity.

WD