There is no point in my trying to post a picture of what I found wrong as it would not be possible to see. You have to feel it.
I did indeed squish the piston on the side towards the intake/exhaust. Both compression ring glands were collapsed just enough to make it difficult for the rings to float and find their center in the bore. If I were on a super, super tight budget I would probably just fit new rings and turn the pistons in the lathe at work to restore the gland width.
However, the rest of what I found says that would be a wasted effort. There was a substantial ridge at the top of the bores and my relatively new big end bearings were scuffed badly... some through the top layer into the copper. There was some modest scoring on the rod journals on the crank also. The main bearings looked fine.
My crank end float measured 0.008" which is what I measured 4 years ago. It's right on the high end of the spec in the factory manual so I will buy new thrusts when I order the rest of the parts.
My plan at this time is to take the block, crank and pistons (with rods) to the shop (hopefully tomorrow). I'll obviously have them tell me what to do about the bores/pistons. I'll have them check the crank and advise me on whether to polish the journals or grind them. I also want them to check that the big ends of the rods are still round and sized correctly.
I wasn't planning a rebuild but after peeking inside this engine I think it was probably coming due soon.
Doug L.
--Previous Message--
: Doug you should be able to move the
: piston side-to-side a few thou when @
: TDC. If the top ring is jammed in the
: groove it won't move.
: Glen
:
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