Uummmmm <'TK><
Jk, Your diagnosis is pretty much right on ... Questions: (1) What do the other Cyl's look like?? (2) What is included in the Re-manufactured Power Head ... If it is everything and all you have to do is add the fuel system and starter, etc. then The new power head would be the way to go ... This way you have new pistons, rings, etc. also does this include New gaskets, (Base, Intake, etc.)
You are looking at a lot of work with little time to repair you PH. You will have to re sleeve or bore, New piston and rings (over size if you bore) Complete gasket set (Not cheap)..
Since there was no signs of any damage to the other cyl's and pistons (assuming) I don't think overheating would be the problem .. Need to check the top cyl. fuel system and make sure the injector and lines has no restrictions. Possible starvation and leaned out. Another possibility is that it broke a ring ... Let me talk to some people tomorrow and I will get back with you... But a new power head seems the way to go... <'TK><
PS. I don't have my ID number book in front of me ... I am assuming that it is Fuel Injected.
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