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07-31-2018, 12:15 PM | #1 |
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Model A Main Bearing-Block and Babbitt Temps
Hello All,
I am sure this has been covered before but what are the recommended Babbitt and Block temperatures for pouring main bearings? I know that the Wilson literature recommends room temp but consensus with most people seems to be a pre-heated block. Can extra Babbitt in the melting pot be re-heatd and used or is it a 1-shot deal? As always "the devil is in the details" Thanx, Steve |
07-31-2018, 02:04 PM | #2 |
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Re: Model A Main Bearing-Block and Babbitt Temps
Steve, the reason you pre-heat is to cut back on the shrinkage as the babbitt cools. Arguably, pre-heating is not that crucial if peining is properly done with the freshly-poured babbitt however I do both.
Yes, you can re-use the 'extra' however I think the size of the melting pot dictates that as crotched or overheated material is never good to re-use. |
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08-01-2018, 07:17 PM | #3 |
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Re: Model A Main Bearing-Block and Babbitt Temps
Another good reason to pre-heat the block is to get rid of any moisture, if hot Babbitt hits any water, it will explode and stick Babbitt to the ceiling. Don't ask me how I know.
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Mark in MT Always looking for another opportunity to be wrong. |
08-01-2018, 09:22 PM | #4 |
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Re: Model A Main Bearing-Block and Babbitt Temps
I seen a Ford movie clip of Ford workmen pouring one block, after another.
1. Two Guys would put a block on the ground, and they were out side, in warm weather. 2. Two Guys would drop the 3 main Jig on. 3. One Guy had a torch like they sell up town, I have one, it is about 3 feet long with a 6 inch pipe on the end, with an I.D. of about 3 inches. It is NOT used for Babbitt! K.R. Wilson said that Ford did not pre heat their blocks, BUT yes he did ! He just didn't use it as a step ! What was done was the jig was put on the block, and then this Jig was heated on the block, a bearing at a time. With this big torch, there is no way they heated the Jig, with out heating the block, but they didn't use preheat, as a step ! 4. When heated, two Guys with two ladles each poured the block. 5. When, solid, two Guys pulled the Jig. 6. Then two Guys moved the block. The purpose for heating a block, has nothing at all to do with shrinkage. Herm. Last edited by Kohnke Rebabbitting; 08-01-2018 at 09:35 PM. |
08-02-2018, 12:08 AM | #5 |
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Re: Model A Main Bearing-Block and Babbitt Temps
750 deg. on babbitt, 350 deg. on the block work? What can be used to stir hot babbitt if not a pine stick?
Thanx, Steve |
08-02-2018, 12:07 PM | #6 | |
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Re: Model A Main Bearing-Block and Babbitt Temps
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Quote:
We have regulated pots. The Tinning pot holds about 3 gallon, of Babbitt, and the pouring pot holds about 5 gallon. The tinning pot is set from 610, to 640. The pouring pot runs at 950. What most people don't know is, a Pine Stick was used on " LEAD BABBITT ONLY ". Long before the right Temperature for pouring Tin Base Babbitt, a pine stick will explode in to flame. Herm. |
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