yes it's plated but even plated cylinders have wear specs. The plating was worn through and was down to the aluminum in certain spots...nickyd said:cylinder worn beyond spec? isn't it plated?
here you gohow about some pics of the cylinder.
you bet they dodo the crank halves show signs of overheating .
i assume that they areYour crank seals could be gone.
yes i'm sure it was pumping coolant out the exhaust port before i tore it apartyou say the bottom end was full of coolant - you sure that didn't happen when the jug was pulled?
actually there not pits there little bits of congealed coolantdirt bike dave said:Not sure what is going on with the crown - could be little bits of bearing got crushed between the head and the piston top. Perhaps detonation made the pits.
Yeah thats the plan. I was hoping that i wouldn't need to replate or replace the cylinder, but i planned on it needing all of what you mentioned, including a new cyl before i bought it...nickyd said:wow, that was the most thorough post I've ever seen!! so it sounds like you'll be rebuilding the crank and putting in new bearings, seals, piston, etc - cylinder replated, etc.
steve125 said:Get some muratic acid( be careful don't get on bare skin or breathe it) and remove the aluminum from the intake port. Most home stores carry it, it's used for cleaning brick. The acid will liquify the aluminum without harming the plating. The cylinder bore may be OK?
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