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QUOTE(sleeper @ Sep 14 2009, 11:23 AM) <{POST_SNAPBACK}>Well I guess Thursday was my last ride. New motor blew up, piston in #1 cylinder is missing a big chunk on the exhaust side.

Happened where the middle channel meets the north. Fired it up again to try to limp it home, made it to NCYC before I realized that wasn't going to happen. The fine folks eating dinner at NCYC were kind enough to share some spaghetti with me while I was waiting for my tow. Towboat US saved my a$$ again this year - it would have been a $458 tow. Instead it's just a reminder to pay that $53 towing insurance bill when it shows up this winter.

You are in the same boat as I am. I rebuilt the motor on mine too. Replaced the rear cylinder/piston, new rings on both cylinders, new powervalves on both cylinders, new head, new reed valves, and rebuilt the carbs. Got it in the water just in time for 4th of July, was running like a charm. By the time the end of August came I blew the front cylinder out in the S. Channel cut-off and was bobbing around trying to get a signal on my phone on one of those days where the wind is blowing strong out of the south against the current. Tow Boat U.S. gave me a free ride home as well, thank goodness for Unlimited! I think my issue is coming from oil injection, I didn't block it off when I rebuilt and I should have. I was premixing just in case it was running bad, but I was still using oil in the tank, and it was running poorly with so much extra oil in the gas. So I quit pre-mixing, oil was still flowing from the tank, but out there running in those waves revving up the engine did it in, I think...
Those cylinders are expensive. I didn't want to go re-manufactured when i rebuilt because they use sleeved cylinders instead of the nikasil plating. And to get them bored/replated is also expensive...
I'm thinking it's time to sell...
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