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Old 11-07-2017, 07:43 PM   #1
jdpalmer
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Default Main engine insert

I have an engine that was inserted about 10 years ago and never run until now and the rear main galled. nothing hurt but insert now I can't find a replacement. I have tried Clevite and Summit and nothing with this number.
S8745SA .020 has anyone heard of this main insert.
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Old 11-07-2017, 09:15 PM   #2
Bob C
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Default Re: Main engine insert

Here is a list of some bearings that were used for the mains.

Model A Main Bearings





Fed Mogul PN .Undersizes Width Std. Shaft size Housing Bore

International Harveste
r
1456SB 2-10-20-30 1.063 1.6230/1.6240 1 7760/1.7770

British Leyland (rod brgs)

4-2965CP 10-20-30-40 .880 1.6254/1.6259 1.7705/1.7710

Onan (rod brg)

3180SB 10-20-30 1.000 1.6252/1.6260 1.7505/1.7510

Standard Motors (rod brg)
4-65290RA 10-20-30 .692 1.6250/1.6255 1.7705/1.7710
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Old 11-07-2017, 09:24 PM   #3
Railcarmover
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Default Re: Main engine insert

That was made by AE bearings,a federal mogul company..Ive done enough brother,you can take it from here.BTW,why did it gall?
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Old 11-08-2017, 09:27 AM   #4
john in illinois
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Default Re: Main engine insert

You might call Rich at AER. He is expert with inserted engines and very helpful.

http://antiqueenginerebuilding.com/

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Old 11-08-2017, 11:02 AM   #5
glenn in camino
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Default Re: Main engine insert

Last time I went through my B engine I had to call the guy who built it to ask where he got the inserts. They turned out to be from a Toyota.
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Old 11-08-2017, 11:14 AM   #6
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Default Re: Main engine insert

...

Last edited by Benson; 11-25-2017 at 12:22 AM.
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Old 11-08-2017, 11:24 AM   #7
d.j. moordigian
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Default Re: Main engine insert

https://picclick.co.uk/MG-MGA-MGB-Gl...l#&gid=1&pid=1

Your welcome...

Last edited by d.j. moordigian; 11-09-2017 at 06:03 PM.
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Old 11-09-2017, 09:05 PM   #8
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Default Re: Main engine insert

Quote:
Originally Posted by Railcarmover View Post
That was made by AE bearings,a federal mogul company..Ive done enough brother,you can take it from here.BTW,why did it gall?
I couldn't find anyone who handled this bearing it was listed but not available. I called antiqueengineering rebuilders and they have the full length mains that should replace these as the housing bore is the same. The cause was oil not getting across the insert. The oil feed hole was almost covered up by the insert but if a oil grove had been put in it I was told by another rebuilder that it would have got enough ol but there was no path across the insert.
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Old 11-09-2017, 10:52 PM   #9
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Default Re: Main engine insert

Quote:
Originally Posted by jdpalmer View Post
I couldn't find anyone who handled this bearing it was listed but not available. I called antiqueengineering rebuilders and they have the full length mains that should replace these as the housing bore is the same. The cause was oil not getting across the insert. The oil feed hole was almost covered up by the insert but if a oil grove had been put in it I was told by another rebuilder that it would have got enough ol but there was no path across the insert.
That sucks..the whole game is attention to detail,If the cat assembling it had stopped and really looked at what he was doing..oh well,good luck finding the insert..hell Id check the other mains and the rods just to be safe..
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Old 11-09-2017, 11:25 PM   #10
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Default Re: Main engine insert

If the AER inserts fit that is great news. My engine has been real happy with them.
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Old 11-10-2017, 11:06 AM   #11
d.j. moordigian
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Default Re: Main engine insert

It's NOT that hard! They fit MGA and MGB ,...I gave you , I thought , enough information.
This is what I found off ebay...

https://www.ebay.com/itm/MGA-1600-MG...hX3aAS&vxp=mtr
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Old 11-24-2017, 07:17 PM   #12
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Default Re: Main engine insert

I miked the bore of the crank caps to block and called Antique Engine Rebuilders. They had the inserts with the .020 that fit perfectly. These are one piece with correct oil holes beveled edges and oil grove all the way around. By the way they shipped fast and reasonable and cheaper than any catalog as they make these that are sold in all of your catalogs. I now have new inserted rods coming that they manufacture.
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Old 11-25-2017, 12:58 PM   #13
john in illinois
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Default Re: Main engine insert

Jimmy I have an A with AER parts and have been happy with itfor 25,000miles.
You should be set.

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Old 12-07-2017, 04:37 PM   #14
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Default Re: Main engine insert

All done the AER inserts and new rods fit perfectly ready for motor install
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Old 12-07-2017, 05:12 PM   #15
Dave in MN
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Default Re: Main engine insert

What was your finished clearance between your crankshaft and the inserts at each journal? I assume you checked it when assembling with Plastigage or a bore gauge?
Good Day!
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Old 12-10-2017, 09:45 PM   #16
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Default Re: Main engine insert

.0015
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