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Snow i ended up buying some SPI pistion and rings and full gasket kit including oil seal set. I got the engine bored 10 over and now all the scratches are gone. The engine looks like was bore 10 over once before because now its 72.50 instead of 72 stock. I also found out its a 1999 polaris 500 engine.
Any advice on changing the seals?
After i put everything together, what is the proper break in for the spi pistons? 10 minute warm up and ready to go? Do I need to take it easy for few hours because of new rings and boring job? Or once its warmed up i can pretty much gun it?
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http://www.avosinc.com
2002 570 arctic cat (136" track x 1-1/4" lug size)
1996 Yamaha VX600 XT (136" track x 1-1/4" lug size custom 3" lift kit rear, meddle and front shackles.
1997 Polaris 600 XC (soon to be 136 x 1.5")
1994 Polaris Indy 440 (99 Polaris 500 Classic engine Rebuilt, 136 x 1-1/4 track)
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