Quote: Originally posted by jimbo on 17 December 2003
definitely get headwork!
manufacturers manufacture cylinder heads as cheaply as possible with economy and reliability in mind (even renault
)
they dont tend to think about wether theres enuff airflow as standard for heavy engine tuning lol
an exhaust manifold will see very small gains but the headwork shud see you quite good
dont bother with bigger valves! for the cost of em they arent worth the extra airflow at all unless youre pushing 200bhp!
have a word with BenR, he specialises in cylinder heads!