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I gave Eric all my measurement specs and I got standard across the board. My rod bearings and four out of seven crank journals match the standard size. Three of them, if I were ordering Nismo bearings, needed to be undersized by .003mm. The difference between the Cosworth sizes though are a whopping .381mm (0.015"). Eric explained that just by scratching off the flash coating of Nismo bearings, you've just taken off at least .003mm if not more. Since Cosworth (and ACL for that matter) do not have coatings and are basic tri-metal, they won't change size as quickly, if at all, every time the crank rests against the bearing, which, depending on your point of view, can be a serious issue.
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