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picking up the pieces 81 gs850g

I finally found those pear shaped o rings part number. Should receive them and piston circuits in a few days. This is going to be fun. Anyone know if I will need a piston ring compressor to get the cylinder lowered down in place? Also, when I pulled the cylinder up the crank rotated half a turn and all pistons are level straight across. This also wrapped the cam chain up and I may need to rotate it back a half turn. Is that bad?
 
Burque73 said:
I finally found those pear shaped o rings part number. Should receive them and piston circuits in a few days. This is going to be fun. Anyone know if I will need a piston ring compressor to get the cylinder lowered down in place? Also, when I pulled the cylinder up the crank rotated half a turn and all pistons are level straight across. This also wrapped the cam chain up and I may need to rotate it back a half turn. Is that bad?
Click to expand...

Won't need a ring compressor. Some use fingers, I use a strip cut from a plastic paint bucket and two hose clamps and do the inner two first.
Free up the chain gently pulling and rocking the crank if you have to. No harm done unless you force something.
 
Cool, thank you. I meant circlips in the last post. Darn auto correct. There were a few posts on this thread that are gone. Talking about gaskets and copper washers. How do the posts get deleted?
 
Burque73 said:
Cool, thank you. I meant circlips in the last post. Darn auto correct. There were a few posts on this thread that are gone. Talking about gaskets and copper washers. How do the posts get deleted?
Click to expand...
At this stage of a rebuild most missing things go down the cam chain tunnel :)
 
I'm really paranoid about that happening. Or just junk falling into the crank case. I covered the opening right away with plastic. Was going to clean the pistons in place but too much hassle. I'll pull them and shine em up.
 
Burque73 said:
I'm really paranoid about that happening. Or just junk falling into the crank case. I covered the opening right away with plastic. Was going to clean the pistons in place but too much hassle. I'll pull them and shine em up.
Click to expand...


This time last year mine looked just like that.
Not paranoid or anything but............did you count all those bits of tape ? :)
 
Nessism said:
One of the photos seems to suggest that when the spark plug hole was enlarged for the threaded insert that they hit the valve seats. If that's the case I'd ditch the head and start searching ebay for a replacement. Be sure to get a 1980 and newer head, the 1979 version had smaller intake ports because those bikes came with VM type carbs.]

I have been away for a while and am getting back to working on this bike little by little. I had to bite the bullet and buy a head. Finally took the advice offered and scrapped the other one. Those threaded inserts were going to be problematic!
I sent my carbs to Chef and plan on getting this engine together real soon, Lord willing!
Click to expand...
 
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