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I use the 4094m bearings on my 440 source crank and while they are a little bit narrower than the clevites , I still had to chamfer them for clearance.



I am running the 4094M's on a Molnar crank with no issues. I am also using the King XP series of BBC rod bearings and have zero clearance issues there as well. I guess Molnar cranks don't need the extra bearing-width clearance on the journals that the 440 Source cranks do. Interesting.



Why is that interesting?? It's a known fact that the radius on the 'source cranks are bigger than they should be and the accepted by the mASSES fix has always been to scrape for clearance.

I used the Clevite bearings on a low deck Eagle crank and they didn't need to be scraped for clearance ???