Quote:
Originally Posted by ProjectSQ
My problem is likely because the machine shop I had gone to for machining the crank aren't experienced with these motors and assured me 0.0025 clearances would be fine. I'm pretty sure I had looked it up at some point and seen a few other rebuilt sr's running this loose so at the time I didn't think anything of it.
Maybe with enough gathered info we can repost this as a sticky for sr engine rebuilds, kind of a "do's and Dont's" list.
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I am assuming you mean inches with your crank clearances. The limit in the FSM states 0.05mm, or .0020 in. Sounds like that was the killer, but let us know what you find. I know I measured mine before and believed I was clear of the limit (0.035 mm) but I will be double checking all of mine yet again before final assembly.
Hopefully we can create a thread that is a "Do and Don't" list for future engine builders other than simply stating "USE THE FSM", even though the FSM should end up with a solid engine.