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FE Technical Forum / Re: piston skirt clearance
« on: March 22, 2024, 02:50:54 PM »
I'll let others chime in on the cam tightening when mains are torqued, I've never come across that issue. But otherwise, all those specs are better than probably the majority of the engines that came out of the factory back in the day. Unless it was a high-end build, I'd let 'er fly. There's been tens of thousands of engines rebuilt with way worse tolerances, we just happen to be in an age where anything less than perfect is now considered unacceptable by many.
If the machinist has been doing this for 50 years, there's a chance he's using much older machining equipment, so those tolerances might not be completely his 'fault'. Not saying that's the case, just that a lot of guys can't afford the expensive newer equipment to keep up with modern expectations, unless they are trying to cater to performance builds specifically. A guy that is on the verge of retirement, as someone who's been doing it for 50 years is likely to be, is not going to shell out tens of thousands of dollars with no chance of recouping those costs.
If the machinist has been doing this for 50 years, there's a chance he's using much older machining equipment, so those tolerances might not be completely his 'fault'. Not saying that's the case, just that a lot of guys can't afford the expensive newer equipment to keep up with modern expectations, unless they are trying to cater to performance builds specifically. A guy that is on the verge of retirement, as someone who's been doing it for 50 years is likely to be, is not going to shell out tens of thousands of dollars with no chance of recouping those costs.