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      03-04-2021, 09:44 AM   #17
DukeofAlexandria
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Drives: 2007 E85 Z4 / 2013 E93 M3
Join Date: Apr 2018
Location: Maryland

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Quote:
Originally Posted by GearKid View Post
These guys come highly recommended so I would think measuring clearances would be done with high precision. On that note, how should one measure journal roundness?
You measure multiple spots over the journal and compare your numbers. Ideally you measure in multiple spots with the main OUT of the car so you can go around the entire thing. You'd need a micrometer and bore gauge. If these guys are even semi-professional, then they should have both of those tools and high quality ones at that.

Sure, you can get away with using plasti-gauge, I've built plenty of american motors with the stuff, but with the tolerances in these bearings/engines, I probably wouldn't go that route. If these guys are using plasti-gauge and going that route, that's a non-starter for me.

-Duke
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