Caution about glass beads

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Model T Ford Forum: Forum 2014: Caution about glass beads
Top of pagePrevious messageNext messageBottom of page Link to this message  By J and M Machine Co Inc on Friday, March 21, 2014 - 07:56 pm:

We received an engine bare block in today for a crankshaft conversion/rebabbitt.
Since it was done by "others" I zealously inspected all portions of the engine block to see what the other shop did or didn't do;mostly didn't.

Other than missing many cracks and poor valve job I noticed the babbitt torn up on the mains.

After looking closely with my magnifier I came to conclusion it was glass bead contamination. pieces of "dirt" iron/brass embedded into the babbitt. The dirt also traveled to the cylinders where there're heavy scratches in the bottoms of all cylinders.

Which raises a flag for all you do it yourself'ers out there.

You can never be to clean this is the result of a dirty job.!
This engine has 1200 Miles on it.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dan Treace, North FL on Friday, March 21, 2014 - 08:11 pm:

Also happens when a 'fresh' short block is fitted with the old dirty tranny and crankcase.

That motor with 1200 miles should have had several oil changes to allow such 'dirt' to be expelled too .

But clean first and clean assembly may be a chore but one that is a must . :-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By Charlie B actually in Toms River N.J. on Friday, March 21, 2014 - 08:23 pm:

You know it says something about the times we live in when a supposedly reputable shop would leave that crap inside a block. What the hell did they think would happen?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Lovejoy, So Cal on Saturday, March 22, 2014 - 12:44 am:

Good info, thanks - also I have seen antique motorcycle engines with the same problem, After being rebuilt.


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