Robedom
Probationary Member
- 7
- 6
- Apr 12, 2023
-
Vista,
California
What’s up everyone. I’m hoping someone can help me understand what’s going on here in my hand. I just rebuilt my entire top end and discovered a scarred wall in the block so we sleeved the block and went forged pistons. When the motor shop was putting the motor back together the discovered the thrust bearing area was worm side to side. I bought a 6 bolt crank from a local guy who had his polished and ready to install in a short block. When I got the crank he had to the shop they were similar but different. They even looked a little different but both have the 6 holes at the end in the same pattern. But a few area mic’d a little different but the front thrust surface is larger too. Any feedback here would be helpful. I’m not famialr with these details but ChatGPT said it may be from a. Different type of 4g63
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