I got this jonsered I am rebuilding it is in really clean and original condition
I compression tested it at 160 psi which I felt was low as my 920 has 180 psi
So I pulled the exhaust and there was some minor scoring on the piston
Pressure and vac tested it with no leaks detected
I pulled the cylinder to properly assess, the piston and cylinder both have visible marks as per the pics but both feel completely smooth
Anyone have any ideas what may have caused this?
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I compression tested it at 160 psi which I felt was low as my 920 has 180 psi
So I pulled the exhaust and there was some minor scoring on the piston
Pressure and vac tested it with no leaks detected
I pulled the cylinder to properly assess, the piston and cylinder both have visible marks as per the pics but both feel completely smooth
Anyone have any ideas what may have caused this?
Sent from my iPhone using Tapatalk