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Posted

I just bought a cool head but I need to buy domes I dont know what size to go to. I am at sealevel I have 120psi in one cylinder and 115psi in the other. I want to run pump gas. I was thinking 20cc domes but I dont know for sure is there any type of calculation that I can use?

Posted
its not ported and I dont know the bore and piston size i can check that in the next couple days.

I would honestly recommend 21's at sea level. At sea level on a fresh setup stock head w/no portwork you should be in the 130 to 135psi range with an accurate guage

Posted
I would honestly recommend 21's at sea level. At sea level on a fresh setup stock head w/no portwork you should be in the 130 to 135psi range with an accurate guage

well I am porting and going to a 4mill in janurary and now at 115psi im kind of thinking I should do a rebuild too. Im not installing the domes until I have it ported.

 

Im low on cash like I cant afford to go to a 4mill but I am anyway Im a student. whats your opinions on rebuilding or not?

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