leeh226 Posted September 13, 2006 Report Posted September 13, 2006 I am building an engine for my 2002 banshee and I bought a new coolhead with 16cc domes. I have ported cylinders, vitos power pistons, .60 over bore, v-force 3 reeds, 28mm pwk carbs, t-6's, and adjustable stator plate. I do mx and trails with my bikes and I am at about 500ft above sea level. I wanted to know if the domes that came with the head are to small even with 120 octane fuel. Quote
dajogejr Posted September 13, 2006 Report Posted September 13, 2006 IF your stock crank is not welded, it's only a matter of time before it goes. With 16cc domes you're most likely up over 200 PSI... You've also may benefit from another pipe design. T6 were designed for stock port motors, or slightly ported motors... 120 octane should be enough, depending on how much timing you have on it... If it were me, I'd throw 19cc domes in, advance the timing to +7 or +8...and use 110 octane.. 16cc are small, small domes. Those are designed for those living up in 3500 ft or more...since the compression will be considerably less up there... Quote
leeh226 Posted September 13, 2006 Author Report Posted September 13, 2006 IF your stock crank is not welded, it's only a matter of time before it goes. With 16cc domes you're most likely up over 200 PSI... You've also may benefit from another pipe design. T6 were designed for stock port motors, or slightly ported motors... 120 octane should be enough, depending on how much timing you have on it... If it were me, I'd throw 19cc domes in, advance the timing to +7 or +8...and use 110 octane.. 16cc are small, small domes. Those are designed for those living up in 3500 ft or more...since the compression will be considerably less up there... Thats what I wanted to know. I also have a vitos hot rod crank in it also but I'm going to change the domes anyway. Quote
sredish Posted September 13, 2006 Report Posted September 13, 2006 (edited) if you have a crank, go 18's. compression is love. if you have a good crank then you might as well make it worthwhile. i don't see the need for 17's but 18's are nice. Edited September 13, 2006 by sredish Quote
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