high compression head fitment???

[leadsled01]

Will my hetrick hi-compression head from my stock bore eton 90 work with a big bore kit? Jerry

[LT80]

Call Hetrick to be sure.

You have to have a 54 mm head to work with a 54 mm big bore kit if you use a 52 then your piston will hit the head and destroy the piston. the piston is bigger on the 54 than the 52 so this makes a smaller inside diameter on the head so the only squish you will have is you piston lol. you need a 54 mm head or take your in and have it milled for prolly 30 dollars and it will be true for your motor. your squish will be what you need it to be . if they know what they are doing. thanks Toby