Helping my buddy put some new SPI pistons in his 03 800 rmk.I noticed that the piston had 2 different rings.one was slightly beveled and the other had perfectly square edges.looked at his old pistons and 1 piston had the beveled ring on top and the other had the beveled ring on the bottom,anybody know which one is supposed to go on top?my knowledge says beveled on top so the rings get a oil squish at tdc, but wtf do I know?Also does anyone the correct ring end gap for this piston,or a stock polaris piston for that matter.Thanks for any info.
piston ring question
- Thread starter cranktwister
- Start date
Thanks Sledguy,appreciate it.I wonder what the reason is for the bevel on top?sure would like to know for future endeavors.
http://www.wiseco.com/PDFs/Manuals/RingEndGap.pdf
I knew I had read something interesting somewhere, finally found it.
As for that bevel, my understanding is that it helps push the ring against the cylinder walls when under pressure (ie during combustion).
I knew I had read something interesting somewhere, finally found it.
As for that bevel, my understanding is that it helps push the ring against the cylinder walls when under pressure (ie during combustion).
