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Old 07-18-2020, 06:35 AM   #10
2935ford
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Join Date: Mar 2011
Location: New Brunswick, Canada
Posts: 1,013
Default Re: Rear Block Babbitt

PC/SR
Thanks for your reply.
If you mean the second picture of my posts is not a rear cap, sorry, yes it is.

You are correct there is something seriously wrong.
The post with the 2 pics shows the old seal on the bottom and new seal above. The pic to the right I propped the seal between two rod caps.

The babbitt in the rear main block oil groove has been cut wrong and another groove cut in an attempt to correct. I suppose this will work.

When seating the new seal in the block groove we had to file both ends of the seal flush to the block surface as the new seal was to long. This done we the place plastigauge on the crank, replaced the rear cap and torqued to 80 ft lbs. This gave us a reading within spec almost .0015”. This is when trying to turn the crank it was locked tight.
We then discovered the seal lip was in hard contact with the crank end behind the slinger.
So it will be necessary to reduce this area on the seal to correct this as shown with red in in post #6.
As mentioned, I bought this A as is and know nothing about its engine rebuild.
In this area where I live there is no one who does babbitt work.
I will check out Herm’s post.
Pictured below is the rear main cap.
Attached Images
File Type: jpg rear main cap 001a.jpg (66.2 KB, 80 views)

Last edited by 2935ford; 07-18-2020 at 08:17 AM.
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