S summit800 Well-known member Lifetime Membership Mar 24, 2009 #1 put 2 new spi pistons in with replated cylinders , 3 rides on it and both pins on the pistons snapped off, didn't do any damage to the cylinders ,put a few dents in the head!!, can any one tell me why they would do this???
put 2 new spi pistons in with replated cylinders , 3 rides on it and both pins on the pistons snapped off, didn't do any damage to the cylinders ,put a few dents in the head!!, can any one tell me why they would do this???
R Red-eye Well-known member Mar 24, 2009 #2 I have seen detonation loosen the locator pins on the rings. Or bad ring gap????
Summit8 Well-known member Premium Member Mar 24, 2009 #3 Lost a cyl. on an 00 Summit 700 to this, stock comp. and all.
S SHERMAN Free Member Mar 24, 2009 #4 Happened to me, detonation due to bad fuel is all I could come up with
S summit800 Well-known member Lifetime Membership Mar 24, 2009 #5 I know it wasnt detnation I was running 50/50 avgas with 92, ring gap was right, I'm a little worried about putting spi back in!!!
I know it wasnt detnation I was running 50/50 avgas with 92, ring gap was right, I'm a little worried about putting spi back in!!!
skibreeze Well-known member Lifetime Membership Mar 24, 2009 #6 Search still works. http://www.snowest.com/forum/showthread.php?t=142247&highlight=piston+pin
