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.

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 Harvester
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

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?

Re: Main engine insert
 

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

http://antiqueenginerebuilding.com/

John

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.

Re: Main engine insert
 

...

Re: Main engine insert
 

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

Your welcome...

Re: Main engine insert
 

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.

Re: Main engine 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..

Re: Main engine insert
 

If the AER inserts fit that is great news. My engine has been real happy with them.

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

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.

Re: Main engine insert
 

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

John

Re: Main engine insert
 

All done the AER inserts and new rods fit perfectly ready for motor install

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!

Re: Main engine insert
 

.0015