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Are those pistons still readily available Mike? Hopefully the rest look good, and you can just replace one to match the busted one, and be back in business. Amazing it could be that bad and not scar the cylinder walls.
 

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Mike I’m so sorry to see that piston. I’m gonna say that cylinder bore has an issue. Piston replacement alone is iffy from where I’m sitting. Piston looks like it got hot and broke apart maybe. I hope it will clean up for you. That’s a heartbreaker.
 

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Discussion Starter · #604 ·
The pistons are still available and they sell singles and sets. I don't know Mario, the cylinder looks better than what I had expected. I will finish pulling the rest of the pistons tomorrow or Friday and will have a better idea on which direction to go. I did find a machine shop willing to do the machine work if needed. Keeping fingers crossed.
 

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Discussion Starter · #605 ·
I finally got the block to the machine shop today. Good News, cyclinders are straight and he recommended a hone and clean up. I need to find someone that can polish my crankshaft as he does not have that tooling. But, everything went better than I had hoped!
 

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I finally got the block to the machine shop today. Good News, cylinders are straight and he recommended a hone and clean up. I need to find someone that can polish my crankshaft as he does not have that tooling. But, everything went better than I had hoped!
In the old days shops had a big bow device that held croakus cloth and was weighted. It was attached to a lathe head so the cloth could line up with various throws or mains. Then the crank was turned at slow speed with the polishing cloth bow pivoted down on a crank throw. A certain time limit was observed, and then moved to each throw, or main. Pretty low tech, but the polishing cloth really didn't remove any metal, just gave it a mirror surface.
Bet nobody uses that old setup anymore, just because it's not high tech now. The guy who built my 283 for my '55 gasser used this method back in 1970.
 

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I finally got the block to the machine shop today. Good News, cyclinders are straight and he recommended a hone and clean up. I need to find someone that can polish my crankshaft as he does not have that tooling. But, everything went better than I had hoped!
Wow glad you caught it in time.
 

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In the old days shops had a big bow device that held croakus cloth and was weighted. It was attached to a lathe head so the cloth could line up with various throws or mains. Then the crank was turned at slow speed with the polishing cloth bow pivoted down on a crank throw. A certain time limit was observed, and then moved to each throw, or main. Pretty low tech, but the polishing cloth really didn't remove any metal, just gave it a mirror surface.
Bet nobody uses that old setup anymore, just because it's not high tech now. The guy who built my 283 for my '55 gasser used this method back in 1970.
My buddy Gary still uses that Machine.
 
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