Crank bearing fit dilemma

Eric Wanderweg · Feb 3, 2025 at 5:50 PM

BuckthornBonnie said: ↑

The old machinist trick of peening the pocket or bearing to get the proper fit does work, but often ends up with slow air leaks if the sealant has any porosity or doesn’t adhere to the case. It’s a fantastic trick on wheel bearings or other non-two stroke bearings, though.
Non x-torq 372? OE? Verify case halves as there were some minor differences depending on what ya got and what you’ve ordered.
I have built up 3 of this series and like ‘em. The 371/372 original edition (OE) just makes sense to me.
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Thanks for the tips. Yes, mine is an OE non-X Torq model, and from what I could see the donor case I bought is indeed a match. I'll look closer to confirm when it comes in though.

BuckthornBonnie · Feb 3, 2025 at 6:01 PM

Sounds good. I like the non-proprietary bearings (6202 Nachis were my preferred replacement) and simple design. I am not a huge fan of the 044 style bushing sleeve (o-ring vs. sealant debate), but everything else comes together nicely and performs well.

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Crank bearing fit dilemma

Eric Wanderweg

BuckthornBonnie