8-105 Main & Rod Bearing Babbitt to Insert Info Enclosed

  • curtiss
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26 Dec 2017 03:44 - 26 Dec 2017 03:58 #33949 by curtiss
curtiss created the topic: 8-105 Main & Rod Bearing Babbitt to Insert Info Enclosed
I finally got the 8-105 engine apart and in fact it did have insert bearings instead of babbitts. I have been searching for conversion part numbers for a while with no success so I figured I would share what I found in my engine in case anyone is considering a swap in the future

The mains were Clevite CB526P .020 and it appears the last builder kept the old babbitt insert and machined it to accept the CB526P (I believe these are out of an Allis Chalmers tractor)

The rods looked like they were machined out to accepts a Clevite CB90P .020 (I believe these are out of a Chrysler 6 cylinder truck)

Last Edit: 26 Dec 2017 03:58 by curtiss.

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26 Dec 2017 17:10 #33950 by RandyEma
RandyEma replied the topic: 8-105 Main & Rod Bearing Babbitt to Insert Info Enclosed
Remember that crankshaft is soft and insert bearings are designed to be run on harder crank journals. The original babbited bearings material was a soft material, new babbit bearings are a hard material . R
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  • auburnandyscar
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27 Dec 2017 03:16 #33952 by auburnandyscar
auburnandyscar replied the topic: 8-105 Main & Rod Bearing Babbitt to Insert Info Enclosed
With a proper film of oil the two surfaces should never meet :)

Check out my build at:
www.1932auburnsedan.com

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  • mikespeed35
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27 Dec 2017 04:31 #33955 by mikespeed35
mikespeed35 replied the topic: 8-105 Main & Rod Bearing Babbitt to Insert Info Enclosed
With past experience I agree with Randy.
CORDiallyMike

Mike Huffman

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