megane are 33mm that,s what i,ve got.
ex all the same.
16v in 30.7mm
willy in 31.7mm
meg in 33mm
cheers ben. i was wrong again. i thought willy,s and megane were the same. sorry for the confusion
no worries.
Slightly off topic but if you were to, for instance build a big valve, gas flowed williams head, what size valves would you use- 33mm?
could be wrong again but i think you can go 34 or 34.5mm
I've got 35mm custom valves, but it takes a SERIOUS amount of work for each port to get the valve size to work. About one evening PER inlet port.
= not cheap.
for a daily drive the willy oe megane valves are more than fine.
might need to get the slightly more accurate verniers out lol
Dave
So would a willy head with 33mm inlet valves give a noticeable gain over standard and not need too much work?Originally Posted by BenR
appropriately modified yes, but a well modified stock valve sized willy head is perfectly good.