ryan954 Posted November 18, 2014 Report Share Posted November 18, 2014 Hey guys im kind of new to the banshee world. So i bought a banshee. It ran fine for a while then i let my cousin borrow it and he blew the piston (wont do that again).so i just replaced the topend on it. I got it bored to 65.5. I put wisco 795 pistons in it and i got a coolhead from jeff over at fastracing. I did a leak down test and it took 2 hours for the gauge to go from 6 psi to 0 psi. So then i did a compression test. On the left cylinder i got 125 psi and on the right side i got 145 psi. My question is why do i have differnt readings between the 2 cylinders. I haven't even started the bike up yet. Mods noss coolhead 23cc domes 4mil 115 vitos 65.5 pistons Mikuni 34mm carbs Cpi pipes year 97 the bike has some port work but cant tell what kind of port work it has. The previous owner couldnt tell me anything about the bike Im in south florida so im at sea level Quote Link to comment Share on other sites More sharing options...
Phelps Posted November 18, 2014 Report Share Posted November 18, 2014 holding the throttle wide open and kicking until the needle stops moving? 1 Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted November 18, 2014 Report Share Posted November 18, 2014 You sure you don't have a dome oring rolled on one side? Quote Link to comment Share on other sites More sharing options...
ryan954 Posted November 18, 2014 Author Report Share Posted November 18, 2014 Please help. I want to ride sooooo bad. But i dont want to start it up and have issues. Quote Link to comment Share on other sites More sharing options...
ryan954 Posted November 18, 2014 Author Report Share Posted November 18, 2014 Yes im holding the throttle wide open. And i pretty sure all of the o rings are set right. I used chapstick on all of the o rings to make sure they stayed in place Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted November 18, 2014 Report Share Posted November 18, 2014 Start it. You do need to seat the rings. 1 Quote Link to comment Share on other sites More sharing options...
ryan954 Posted November 18, 2014 Author Report Share Posted November 18, 2014 Ok im going to start it when i get off work today. Quote Link to comment Share on other sites More sharing options...
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