15 psi more compression

[HIDEF]

i have been searching and searching everywhere and cant find the info i need so maybe someone here can help me out. im not sure what size domes or pistons the bike has but i noticed that the right side (sitting on bike) was smoking just a little bit more than the other so i did a compression test just for piece of mind and i got approx 164-166 on the left and 150-152 on the right. i know that maybe 1-3 psi is ok but is 10 to 15 way to much of a difference. im at sea level.

im running 93 octane @ 32:1 and according to the plugs im a little rich if any of that makes a difference. any input on this would be much appreciated.

[Jereme6655]

well....5-10% is actually what is said to be "acceptable" for riding. however i wouldnt ride my bike that way. What i would suggest is also doing a leakdown test next. THEN start slowly pulling it down and inspecting as you go.....could be the rings let go....could be the chamfer on your exhaust ports wasn't good enough and started to snag a ring. Could be a cracked pistons. or an egg shapped cylinder.....etc etc etc.

[HIDEF]

well....5-10% is actually what is said to be "acceptable" for riding. however i wouldnt ride my bike that way. What i would suggest is also doing a leakdown test next. THEN start slowly pulling it down and inspecting as you go.....could be the rings let go....could be the chamfer on your exhaust ports wasn't good enough and started to snag a ring. Could be a cracked pistons. or an egg shapped cylinder.....etc etc etc.

 

Thank you for the reply. Looks like i'm starting winter tear down a little early this year..