rear main cap

[Richard/Ca]

Will today I took my rear main cap off and it has a chunk broken off where the seal goes. I have the broken piece so that is no problem. Last week the motor over heated and filled the pan with water. Would the broken part cause the water leak.And any suggestion on how to replace the cap? Motor is still in car.

[Joe K]

Pix would help a LOT.

Joe K

[colin1928]

As there are no water jackets near the rear main bearing cap
I think you have 2 different issues

[1931 flamingo]

I think you've got bigger problems than a cracked cap. Overheating (usually the water goes out the overflow or out around the radiator cap) and filling the pan (I assume you mean the oil pan) doesn't compute.
More info needed and/or pics.
Paul in CT

[Mikeinnj]

That seal controls oil not water. Sounds like a head gasket issue and cap repair or worse.

[glenn in camino]

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When I first got my unrestored AA flat bead I thought I'd adjust the bearing clearances, so I removed the rear main cap. As I lowered it down, a piece of babbit, the size of a quarter came out. Not wanting to rebuild the engine at the time, I stuck it back in with some red Locktite and put it back together. I then drove it for another 8 years, expecting it to fall apart at any time, but it never did.

[Richard/Ca]

I will try to post pictures. Also when I put the head on I only used the spray on copper seal on the gasket and the Head and block.

[My1930ModelA]

Richard, I also just ran into a problem today when I removed my rear main cap. A portion of the babbitt on the forward thrust surface broke away. I have the piece and it fits perfectly into the area where it broke out of. Thinking of JB welding it back into place as it is captured and held in place anyway when the cap is installed. Good luck with your car and I hope you find a solution.

Mark

[Mark W.]

I'm no expert on old Babbitt, but I had the same problem and went to a full rebuild including new mains.

My .02 is that if it is beginning to go, it will continue to go. I'll stick with the old STP ad - Pay me now, or PAY me later...

[Richard/Ca]

OK! Thanks everybody. I was thinking (omg) about emailing Bob Barlow in Oregon to see if he could pour me another main baring cap. If I sent the broken one and another good one to use.

[CarlG]

Originally Posted by Richard/Ca

OK! Thanks everybody. I was thinking (omg) about emailing Bob Barlow in Oregon to see if he could pour me another main baring cap. If I sent the broken one and another good one to use.

Bob Barlow works miracles on main caps. A half dozen or so in our club will attest to that.

[Kohnke Rebabbitting]

Originally Posted by CarlG

Bob Barlow works miracles on main caps. A half dozen or so in our club will attest to that.

I thought that was his brother Bill?

[Richard/Ca]

Thank you CarlG I tried calling him so I could better explain what the ploblem is phone was busy.I will try again later. I think it would be better then email.

[CarlG]

Originally Posted by Kohnke Rebabbitting

I thought that was his brother Bill?

I stand corrected, Bill it is.

BABBITT WORK
1. No known website: Bill Barlow (541) 389-2694 (Oregon) [email protected]

[Richard/Ca]

My bad I type in Bob instead of Bill. Sorry!