Main and big-end bearings

The 3 1/2 forum
mbmm350s
Posts: 666
Joined: 22 Jun 2018 10:18
Location: Reading UK
Location: Berkshire UK

Re: Main and big-end bearings

Post by mbmm350s »

resurrecting an old thread.

I measured a plain bearing journal on an 80K miles 350 A engine as 46.28 , and the standard size is 46.355?

Mdina part lists 25.03.20 shell mains brg oversize i/d 45.9mm
but that's -0,45 (approx)
Is there no longer -0.2 option? part number 25.03.20 is supposed to be -0.2mm
And this is the complete assembly?
Thanks
Mark
MickeyMoto
Posts: 2415
Joined: 22 Nov 2008 17:41
Location: Even further oop North

Re: Main and big-end bearings

Post by MickeyMoto »

hello Mark,

When I did my crank only the second undersize was available.

Mike
harrymuffin
Posts: 292
Joined: 07 Apr 2014 16:06
Location: west midlands

Re: Main and big-end bearings

Post by harrymuffin »

Not wishing to be pedantic, but don't you mean undersize?
mbmm350s
Posts: 666
Joined: 22 Jun 2018 10:18
Location: Reading UK
Location: Berkshire UK

Re: Main and big-end bearings

Post by mbmm350s »

Thanks Mike.
Quality? Good, OK or bad?
Are they split like the original?

Harry:
Mdina part lists 25.03.20 shell mains brg oversize i/d 45.9mm
I just quoted from Mdina website. :lol:
Mark
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