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07-10-2020, 11:32 AM | #21 |
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Re: paint on oil pan?
Thank you, I thought Duntovs were earlier.
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07-10-2020, 01:22 PM | #22 |
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Re: paint on oil pan?
Without going back and looking it up, I believe you're actually correct. I believe the Duntovs were peddling the Arduns in the LATE '40s, and of course, the first PRODUCTION hemi was '51.....RELATIVELY close. DD
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07-10-2020, 01:53 PM | #23 |
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Re: paint on oil pan?
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07-17-2020, 01:07 AM | #24 |
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Re: paint on oil pan?
I like clean, clean is good.
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07-17-2020, 08:41 AM | #25 |
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Re: paint on oil pan?
Moved to the main thread . . .
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07-17-2020, 10:20 AM | #26 |
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Re: paint on oil pan?
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07-17-2020, 10:55 AM | #27 |
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Re: paint on oil pan?
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07-17-2020, 02:35 PM | #28 |
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Re: paint on oil pan?
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07-17-2020, 05:41 PM | #29 |
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Re: paint on oil pan?
I've never painted the inside of an engine myself. If bare steel and iron lasted 70 years or so I didn't think I could improve. None of the older hi performance engines were painted inside. Ford was doing some E coated pans on engines in the 80's and have heard that some of it came off and plugged the oil pump pickup screens.
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07-18-2020, 02:43 PM | #30 |
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Re: paint on oil pan?
This is an interesting thread for sure. Before reading it I would have said absolutely not. Now I'm not sure. I will keep watching the debate.
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07-18-2020, 04:10 PM | #31 | |
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Re: paint on oil pan?
Quote:
On a wet sump engine it probably wouldn't show any gain on the dyno. On a dry sump engine that runs 20 inches of vacuum in the pan, polishing all surfaces in the crankcase and valve areas will show 4 to 5 hp gain from reduced windage and better scavenging of the oil. Using paint or glyptal might offer some advantage but you would still have the rough surface. |
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07-18-2020, 04:15 PM | #32 |
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Re: paint on oil pan?
I do polish down the rough surfaces. I assume there is not any major advantage to it, just what we did the in 60s and I have kept doing it.
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07-19-2020, 09:42 AM | #33 |
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Location: San Antonio, Texas
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Re: paint on oil pan?
This is a question with two answers. Either do it or don't. If a person has a hobby car and runs it often, there is nothing wrong with leaving it the way it came from the factory. If you want to then do it. Most folks use it to seal castings for better run off of lubricant. On a smooth stamped steel surface, the motor oil will preserve it as long as the vehicle is used on a regular basis.
Painting something doesn't always guarantee that it won't corrode. If corrosion starts between the paint and the subsurface the the paint will start to flake off. If it is painted then it's a good idea to clean the surface well and use a conversion coating to passivate it. |
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