Gyrobob
Serious Thumper
Offline
Posers ain't motorcyclists
Posts: 2571
Newnan, GA
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If your motor turned over more than a few revs after the chain broke, your piston and valves are history. You probably cranked it for a while after the chain broke just trying to get it started again.
Your plan: Set up time and funding for a complete rebuild. If your bike has a lot of miles on it, (20,000? 40000?) this is probably a good idea in any event. -- New parts. gasket set, seals, rings, piston, valves. --- The piston may only be scraped on top, so if it is dimensionally okay, and can be cleaned up nicely, good for you. --- Possibly cylinder head and cylinder, con rod, and crank are damaged, but hopefully these are salvageable. --- If you had ever considered hopping up the thing, now is the time to get a cam, a carb, etc. --- Shopping around can make a big diff in costs. -- Find a shop that does this kind of work reliably. --- Locally is nice, but shipping it off to someone who really knows how to do this kind of work on this kind of cylinder is often worth the expense. -- If you can do the machine work yourself, marvy. Just make a thousand posts here using the tons of expertise available. -- Your bike being a 1986 model means the rebuild will cost more than the bike is worth.
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