cool head for 250r

[250r launcher]

I'm wondering what kind of dome to get does anyone run a 21cc dome? if so whats your compression? I know that mods will vary the compression however I'm wanting to get a ballpark idea. If anyones running a coolhead or noss head plz give me a lil feedback with your experince with you compression....19cc?21cc? w/e just give me some info

thanks in advance

[Rich250RRacer]

Stock crank or stroker crank. I've always run a 20cc dome. When I ran my stock crank and one thin part of the stock head gasket I had about 190-195 lbs. compression. With my stroker crank, I run the complete ATC head gasket and compression is still about 190-195. This works out perfect for me, NO race gas needed.

[250r launcher]

I do have a hot rod stroker , i purchased the quad with all the goodies already and i just took the motor down and ran the numbers and noss machine did say it was a strocker crank so hopefully i will have the same outcome I have found a pro design cool head with 21cc so i should have almost the same setup thanks for the reply man

[250r launcher]

ne more replys would be appreciated

[xx3003xrdrxx]

My motor is getting done by Rich at hetrick racing , hes just milling my head 20 thousandths or something like that ?

[250r launcher]

Has he mentioned how much compression is expected with shaving the head that much?

[xx3003xrdrxx]

well he told me he could set it up for pump gas or race fuel , i said the hell with it and ordered a drum of race fuel and hes setting it up for race fuel so i would imagine a decent amount.