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02-05-2024, 06:18 PM | #1 |
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Join Date: Jan 2021
Location: Slightly left of Vernon, BC
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Oil pump aerating oil
Hi guys,
I'm helping a friend of mine diagnose an oil foaming problem with his '29 Model A. He's building a new engine and has put in a modified oil pump and he has modded the oil system to put oil where it wasn't before as well as adding an external filter. He's testing the pump by driving the cam with his drill. Has anyone else tested their pump this way and is this kind of aeriation common or is there something amiss? Thanks for your help. I'm attaching a video link below. Cheers https://share.icloud.com/photos/09dI...yicmbdEN4aFP9A
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1949 Ford F-47 with a '51 8BA Flatty, GM TBI fuel injection system, and a grey shop cat, Spot. |
02-05-2024, 06:26 PM | #2 |
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Location: Qld, Australia
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Re: Oil pump aerating oil
there will be something wrong to airate the oil
lawrie |
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02-05-2024, 06:40 PM | #3 |
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Location: Lambsburg Va
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Re: Oil pump aerating oil
This might help
https://youtu.be/9YXjaxxC7rE?si=iVcfKaA0X8rlwxLz |
02-06-2024, 12:58 PM | #4 |
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Location: Temecula, CA
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Re: Oil pump aerating oil
The A/B oil pumps are submerged in oil, so should not pick up any air.
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02-06-2024, 02:01 PM | #5 | |
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Re: Oil pump aerating oil
Quote:
Thanks again.
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1949 Ford F-47 with a '51 8BA Flatty, GM TBI fuel injection system, and a grey shop cat, Spot. |
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02-06-2024, 06:17 PM | #6 |
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Re: Oil pump aerating oil
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Also explain the modifications to oiling system J
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As Carroll Smith wrote; All Failures are Human in Origin. |
02-07-2024, 05:55 AM | #7 | |
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Join Date: Aug 2021
Location: Germany: Cologne and Witten
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Re: Oil pump aerating oil
Quote:
just a guess, but isn't 10W30 a bit thin? Maybe a -40 or even -50 will be better? |
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02-07-2024, 09:01 AM | #8 |
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Join Date: May 2010
Location: Long Island, NY
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Re: Oil pump aerating oil
Just a wild guess, but are you sure that the liquid in the crankcase is an SAE rated motor oil? The reproduction stuff called 600W has poor anti-aeration and will behave as you stated. Maybe that stuff or some other additive is in the crankcase????/
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02-07-2024, 10:27 AM | #9 | |
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Re: Oil pump aerating oil
Quote:
and isn't the green colour also an indicator? |
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02-07-2024, 11:45 AM | #10 |
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Join Date: Jun 2010
Location: Temecula, CA
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Re: Oil pump aerating oil
Not sure, is the 'can' installed over the pump? Is there a gasket under it? The top of the can is above the oil level. You could try adding a couple of quarts to see if that helps. Good luck!
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02-07-2024, 05:09 PM | #11 |
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Location: San Antonio, Texas
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Re: Oil pump aerating oil
I found that the one in my 29 had a leak at the point where they tried to plug off a drilling at manufacture. After cleaning it real well I also found some cracks in the housing. I was fortunate to find one of the earlier forged pumps in good shape so I cleaned it up and checked all the parts out with no discrepancies. It works a lot better than the leaker.
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