4th main babbitt pouring question

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Mark Gregush
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4th main babbitt pouring question

Post by Mark Gregush » Tue Jun 13, 2023 1:01 pm

After melting the old babbitt out, when pouring the 4th main, does it need to be tinned before pouring? Seems to work fine without, but don't know if it needs it.
Thanks
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1948 Ford F2 pickup
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Joe Bell
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Re: 4th main babbitt pouring question

Post by Joe Bell » Tue Jun 13, 2023 1:22 pm

I have melted out more that where never tinned than those that where!
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Mark Gregush
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Re: 4th main babbitt pouring question

Post by Mark Gregush » Tue Jun 13, 2023 1:34 pm

That is what I am hoping to hear. :)
I know the voices aren't real but damn they have some good ideas! :shock:

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speedytinc
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Re: 4th main babbitt pouring question

Post by speedytinc » Tue Jun 13, 2023 2:20 pm

Mark Gregush wrote: ↑
Tue Jun 13, 2023 1:34 pm
 That is what I am hoping to hear. :)
Try it, but, I had some done that were not tinned & they should have been. Poor adhesion.
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Dan McEachern
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Re: 4th main babbitt pouring question

Post by Dan McEachern » Tue Jun 13, 2023 3:32 pm

Good practice is to 100% tin the ball cap prior to pouring. Why take a chance of having a failure??
Its not that much more effort when things are hot.
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Mark Gregush
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Re: 4th main babbitt pouring question

Post by Mark Gregush » Tue Jun 13, 2023 5:06 pm

Ok I will try both ways. The one I did looks ok, have a couple of more I need to do.
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1948 Ford F2 pickup
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Kerry
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Re: 4th main babbitt pouring question

Post by Kerry » Tue Jun 13, 2023 6:01 pm

000_1082.JPG
000_1083.JPG
Tinned, poured and bored.

Looks OK is not the issue, working OK is, they are tinned for a correct bond, if not then all you have is a babbitt sleeve which will fail.
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TXGOAT2
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Re: 4th main babbitt pouring question

Post by TXGOAT2 » Tue Jun 13, 2023 6:46 pm

I believe it ought to be tinned. That will lock the babbit in place and give the best heat transfer. As things wear and clearance devolps, the tinned bearing would be less likley to loosen, spin, or crack.

It would be more important for a TT or a speedster, or any car that is to be driven enthusiastically.
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Gene_French
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Re: 4th main babbitt pouring question

Post by Gene_French » Tue Jun 13, 2023 8:47 pm

Mark:
i have done a bunch of ball caps ... i have never seen a ball cap that was not tinned ... many are not a full tinning , BUT , all show some attempt at a tinning ...also , i mailed your endcap this afternoon ... always an optimist ...Gene French
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Mark Gregush
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Re: 4th main babbitt pouring question

Post by Mark Gregush » Wed Jun 14, 2023 10:04 am

Thank you Gene.
Tinning it is then.
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1948 Ford F2 pickup
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BobShirleyAtlantaTx
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Re: 4th main babbitt pouring question

Post by BobShirleyAtlantaTx » Wed Jun 14, 2023 11:20 am

IMG_1922.png
. I like this stuff for tinning. All the plumbing supply have it around here. Don’t forget the flux brushes
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BobShirleyAtlantaTx
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Re: 4th main babbitt pouring question

Post by BobShirleyAtlantaTx » Wed Jun 14, 2023 11:30 am

One more thing, I save old babbitt for tinning, lay a connecting rod on its side and pour the channel with babbitt. This make’s just the right size sticks sticks for rubbing on what you want tinned.
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Dan McEachern
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Re: 4th main babbitt pouring question

Post by Dan McEachern » Wed Jun 14, 2023 12:14 pm

"One more thing, I save old babbitt for tinning, lay a connecting rod on its side and pour the channel with babbitt. This make’s just the right size sticks sticks for rubbing on what you want tinned."

If you use a model A rod for that, you get wider and longer strips.
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Mark Gregush
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Re: 4th main babbitt pouring question

Post by Mark Gregush » Wed Jun 14, 2023 6:43 pm

I have used a piece of steel right angle to make the sticks.
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1948 Ford F2 pickup
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