Cool Head Dome Q

[poorboy6977]

I am wanting more compression. I am getting ready for new piston and rings. I have a 20cc dome on my cool right now, i was wanting to replace it with a 17cc. Would this be a bad idea? are there things i need to look at before i try it? could it hurt anything? Thanks.

[Duneman101]

i think standard is 21 if i am not mistaken....

going to a 17 will definetly up the compression... if you do that make sure you get gas to match it or you will be detonating....

[538 banshee]

higher compression is not always better, make sure to run quality fuel if bumping it up,

[poorboy6977]

I run torquo 110 right now, i just wasnt sure if i had to modify anything or if the plug clearance would be an issue. I didnt know how drastic of a change it is.

[BlueDiablo]

why not just mill the head?

[poorboy6977]

because its only $38 for the dome and i dont have a local machine shop.

[DemDudes]

whats the difference between a cool head and getting my stock head ported and polished?

[ONLY2STROKES]

Originally Posted by poorboy6977

I am wanting more compression. I am getting ready for new piston and rings. I have a 20cc dome on my cool right now, i was wanting to replace it with a 17cc. Would this be a bad idea? are there things i need to look at before i try it? could it hurt anything? Thanks.

i dont know if i would go that extreme.the fuel you run should be ok,but that is a drastic change.i went from a 20 to an 18 on my suzuki and it was a huge difference.