Exhaust Manifold..

[mattchewone]

Is it possible to bore out the exhaust exits on the engine to get more and better flow out of the engine. Just wondering really if it was possible and worth doing, Obviously would need a custom manifold made.

[KamRacing]

it is possible but the gains if any would be questionable and expensive. I'd look elsewhere to tune. You can improve gas flow by working on the exhaust ports though

[Tobs]

just port and polish the head mate widen the inlets and outlets

no point just doing outlets tho should do em both to make it breath rite

its piss to do ive been doing it at college alot now, but if i was you id buy the same head as you got and work on that, dont go ripping ur working engine apart anf fucking it up