Head Porting

[jnr32]

Hey i have a RB20 and was wondering if head porting would be worth doing???

[Craved]

depends on what power output your trying to reach, to me on a forced induction motor, this would be the last thing to do to gain horsepower

port matching is more important.

but if your not removing the head for another reason, it sounds like it would be a waste of money for little gain

[TurboX]

What Craved says is probably not wrong, but I did do mine when head off for other reasons but unfortunately did other stuff as well so could not measure gains. Cost was about $850 inc new valve stem guides and seats.

Will be dynoing again soon so we will see if it could have contributed in some way if I get some decent numbers.

[Craved]

hahah my english no so good today LOL - last line should have been as below :

but if your not removing the head for another reason you could consider it if you have the money

it sounds like it would be a waste of money for little gain without having alot of other supporting mods and pushing flow limits of the std head ..