marsuper33 Posted May 1, 2011 Report Share Posted May 1, 2011 (edited) hi everyone am kind of new here anyway i just bought my cool-head pro design with 20cc domes and wanted to know whether i'll have problems riding dunes?? am running exactly as below K&N Filters + T5 + V-force3 + Wisco pistons + Elevation 700ft-990ft + 280 main jet + 98octan I wanted to know if that it is safe with the 20cc or should i put 22cc Edited May 1, 2011 by marsuper33 Quote Link to comment Share on other sites More sharing options...
rnegv Posted May 1, 2011 Report Share Posted May 1, 2011 hi everyone am kind of new here anyway i just bought my cool-head pro design with 20cc domes and wanted to know whether i'll have problems riding dunes?? am running exactly as below K&N Filters + T5 + V-force3 + Wisco pistons + Elevation 700ft-990ft + 280 main jet + 98octan I wanted to know if that it is safe with the 20cc or should i put 22cc I wouldn't think you'd have any probs. I have the 20's in mine with 35mm keihin's on pump gas at 4k feet Quote Link to comment Share on other sites More sharing options...
marsuper33 Posted May 1, 2011 Author Report Share Posted May 1, 2011 I wouldn't think you'd have any probs. I have the 20's in mine with 35mm keihin's on pump gas at 4k feet i think in 4k it's much different cause the more elevation less compression Quote Link to comment Share on other sites More sharing options...
shakar Posted May 1, 2011 Report Share Posted May 1, 2011 (edited) i run 20 cc domes at sea level with no problems with + 4 timing.ur good Edited May 1, 2011 by shakar Quote Link to comment Share on other sites More sharing options...
madjimmax Posted May 1, 2011 Report Share Posted May 1, 2011 Every thing should be fine with that setup. Higher elevations just means air is thinner thus smaller jets, it wont change your compression though as said earlier. Quote Link to comment Share on other sites More sharing options...
marsuper33 Posted May 1, 2011 Author Report Share Posted May 1, 2011 Every thing should be fine with that setup. Higher elevations just means air is thinner thus smaller jets, it wont change your compression though as said earlier. and I wont have any temp problems or should I go with custom radiator Quote Link to comment Share on other sites More sharing options...
madjimmax Posted May 1, 2011 Report Share Posted May 1, 2011 and I wont have any temp problems or should I go with custom radiator No you wont have any temp problems. The stock cooling system on a shee does a good job and will handle way more mods then your planning on throwing at it. A lot of times when someone has overheating issues it's caused by a lean condition which means you need to bump up the jet size a little, or having your timing to far advanced can also cause you to overheat. But as long as you dont go to far above 4 or 5 degrees advanced on the timing you'll be fine on a trail bike. Quote Link to comment Share on other sites More sharing options...
bansheesandrider Posted May 1, 2011 Report Share Posted May 1, 2011 Every thing should be fine with that setup. Higher elevations just means air is thinner thus smaller jets, it wont change your compression though as said earlier. Yes the air is thinner and that requires less fuel, there is also less atmosheric pressure so the cylinders do not fill as good so you want to squeeze it harder to get maximum Bang out of it. Back in the 40s and 50s they used to offer high altitude pistons for cars, which were what we now call high compression pistons. So yes as your altitude goes up your dome cc's should come down to compensate for the lower atmosheric pressure. If he is actually getting 98 octane fuel he will be fine with that setup. Quote Link to comment Share on other sites More sharing options...
Phelps Posted May 1, 2011 Report Share Posted May 1, 2011 Every thing should be fine with that setup. Higher elevations just means air is thinner thus smaller jets, it wont change your compression though as said earlier. wow really? i can't believe the shit ppl feel comfortable posting around here. yes the higher the elevation the less compression and the less fuel needed. Quote Link to comment Share on other sites More sharing options...
Coupelx Posted May 1, 2011 Report Share Posted May 1, 2011 wow really? i can't believe the shit ppl feel comfortable posting around here. yes the higher the elevation the less compression and the less fuel needed. no shit Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted May 1, 2011 Report Share Posted May 1, 2011 x3 Here is a chart. http://www.nossmachine.com/banshee_heads.htm Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.