domes?

[vbanshee]

i have 19cc domes on my cool head by pro design . pro design said if i run anything under 22cc domes i need to run race fuel? is this true? ive ran it off pump 91 and never had a problem

[tonyown]

depends on altitude and mods... if you are really high it may be good... 21cc may be safe at sea level so...

Edited May 21, 2010 by tonyown

[springer]

i'm running 21cc domes with a fresh bore and hittin about 150 psi in each cylinder. I'm running 91 no problem. I was even thinking about droppin to 20cc, but i figured i should leave well enough alone.

[toytech]

i have 19cc domes on my cool head by pro design . pro design said if i run anything under 22cc domes i need to run race fuel? is this true? ive ran it off pump 91 and never had a problem

 

if your compression is over 160 psi you need race fuel.