vbanshee Posted November 11, 2010 Report Share Posted November 11, 2010 so i have a motor with stock jugs just bored to 65mm i run 19cc domes on my pro design cool head. am i supposed to run race gas? if so what octane? Quote Link to comment Share on other sites More sharing options...
J-Madd Posted November 11, 2010 Report Share Posted November 11, 2010 Depends on your elevation; but most likely yes. At least 100 octane, maybe more. Do a compression test. Quote Link to comment Share on other sites More sharing options...
bansheesrtoys Posted November 12, 2010 Report Share Posted November 12, 2010 u shouldn't have to with 19cc but it will give u better thottle response. Quote Link to comment Share on other sites More sharing options...
jasons Posted November 12, 2010 Report Share Posted November 12, 2010 he rides Glamis so its about sea level. the NOSS website says with 19cc domes compression should be approx 183 psi i would run avgas 100ll. Quote Link to comment Share on other sites More sharing options...
TNTS355 Posted November 12, 2010 Report Share Posted November 12, 2010 I think anything above 160psi should be running race. Quote Link to comment Share on other sites More sharing options...
06specialedition Posted November 12, 2010 Report Share Posted November 12, 2010 I think anything above 160psi should be running race. X2. 160-170 is about the max I would go without race fuel Quote Link to comment Share on other sites More sharing options...
firebanshee Posted November 13, 2010 Report Share Posted November 13, 2010 I think 20cc domes @ sea level is pushing it for race fuel.imo Quote Link to comment Share on other sites More sharing options...
AKheathen Posted November 14, 2010 Report Share Posted November 14, 2010 i think 20cc domes asl ran awesome on 90 oct. actually......but stock timing... Quote Link to comment Share on other sites More sharing options...
shoopie Posted November 18, 2010 Report Share Posted November 18, 2010 (edited) i have the same thing, 19cc domes in a pro design head. i have 180psi in each cylinder. i run at sea level and i have been running VP c12 rase gas. its around 108 octane. Edited November 18, 2010 by shoopie Quote Link to comment Share on other sites More sharing options...
Darthwall Posted November 18, 2010 Report Share Posted November 18, 2010 without compresion test you never know 160 comp and below run 92 but 165 and above start mixing 110 and 92 atleast Quote Link to comment Share on other sites More sharing options...
AKheathen Posted November 18, 2010 Report Share Posted November 18, 2010 without compresion test you never know 160 comp and below run 92 but 165 and above start mixing 110 and 92 atleast actually...if you really want to know, you need to figure out what kind of dynamic compression, and other variables........93 can start to detonate anywhere between 140psi and 190psi, really..... Quote Link to comment Share on other sites More sharing options...
midlifecrisis Posted November 19, 2010 Report Share Posted November 19, 2010 Im at about 200' and run 92 no problem. Quote Link to comment Share on other sites More sharing options...
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