12-08-2023, 06:14 PM

PontiacLars PontiacLars is offline

Senior Member

Join Date: Feb 2021

Posts: 102

Too big main clearance after alignhone

Machine shop aligne honed and installed splayed 4 bolt mains. I see they made the bores on the upper limit, around 3.1890.
Cap number 4 is outside toleranse at 3.1894.

I get these main clerances now with std 113M bearings:

1 .0043
2 .0047
3 .0035
4 .0051
5 .0035

What to do now?
I can only find 0.0010 bearings. With 0.0020 and 0.0030 also I could fix this.
Dont want to grind my brand new, perfect, Molnar crank if I dont have to.

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