Hello, I have a 96 Formula Z 583. Bought it from a older gent at the start of the season 10000km all original with a blown (mag side) top end. I rebulit the top end on both sides. With kimpex .020 over pistons, had my machine shop match the bore to the piston size. Finished the rebuild broke it in gently. after 200km check compression it was good. Everything was good its been about 750km since the rebuild.
Last ride I was crossing freshly froze ice, and this was an excellent spot to open her right up. I did i held it WOT for about 10 seconds or less then you know what happened. Lost all power, coasted to a stop, i dont think it seized, as i checked the clutchs free movement right away. everything looked good, cranked it over but it wouldnt fire up. Did the finger comp test and the PTO side had no compression, wouldnt even pop my finger off. Eventually with the PTO plug pulled i limped it home. Tore into the next morning and SEE PICS
The cylinder is quite scored, BUT the ring is intact. piston also has alot of wear for 700kms. What could cause a failure like this? Plugs were brown, i do frequent plugs chops, temp was low, oil consumption was normal. I'm completly confused at the moment, dunno what would cause this.
Cody MMember Since 26 Jan 2012
Offline Last Active Feb 28 2012 08:36 PM
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1996 ski doo formula Z 583
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