hey guys i have a f20b in a ej1 and i was thinking of caming it.f20b comes with dual valve springs from factory already and do you think i need to change the valve spriing if i was going to go with stage 2 crower.
to change or not?very little miles on engine about 37k
thanks in advance

 

bumb

 

yes.

 

yes upgrade , unfortunitly they are only as good as stock h22 valve springs . yes the f20b cams are a bit bigger but not enough to warrent there own part.

the power band of a cammed f20 will over excied the stock springs