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02-28-2023, 09:04 AM | #1 |
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Join Date: Dec 2021
Location: Auburn Maine
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Model a head on model b engine
Will a model a head fit on a model B engine
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02-28-2023, 09:41 AM | #2 |
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Location: Hudson, NY
Posts: 511
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Re: Model a head on model b engine
yes, use the correct head gasket.
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02-28-2023, 10:15 AM | #3 |
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Re: Model a head on model b engine
Don't forget to plug the "steam" holes.
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02-28-2023, 05:35 PM | #4 |
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Re: Model a head on model b engine
I have had an A head on a B engine for over a decade without plugging those holes. I was told I should but couldn't see the point. Maybe I did the wrong thing but it has been fine. What reasons were given to you? (Not being confrontational)
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02-28-2023, 05:47 PM | #5 |
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Re: Model a head on model b engine
If you use an A head gasket with a B head or block it may not adequately cover the holes.
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02-28-2023, 06:59 PM | #6 |
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Re: Model a head on model b engine
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03-01-2023, 08:22 AM | #7 | |
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Re: Model a head on model b engine
Quote:
The "commonly doesn't" would be the "aftermarket" modern gaskets. For many high compression heads these are the recommended gaskets. I tend to agree though. Not necessary to plug the holes if you use a quality gasket. The literature for the original Gordon-Smith compressor heads - based on a Model B head at least the part on cylinders 1 and 4 - don't mention the holes or their plugging. But that is a "different" and perhaps even more challenging application. Joe K
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Shudda kept the horse. Last edited by Joe K; 03-01-2023 at 08:27 AM. |
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03-01-2023, 09:55 AM | #8 |
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Location: Austin, Texas
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Re: Model a head on model b engine
Agree with posts 5 &7. Had a couple in my shop that leaked using Best Copper gaskets. Plugging the holes stopped the leaks. Agree, it is not necessary to plug the holes unless the gasket leaks. (Smile)
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03-01-2023, 12:58 PM | #9 |
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Re: Model a head on model b engine
This slide should help:
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03-01-2023, 02:21 PM | #10 |
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Re: Model a head on model b engine
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03-02-2023, 10:57 AM | #11 |
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Location: Boulder, Colorado
Posts: 97
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Re: Model a head on model b engine
High compression Model A head allows modern, “leakless” A water pump that is cheaper and easier to get than reworking or buying a B motor pump. Not a huge difference but keeping the B head does add that factor. Just went through it….-Chris in Boulder
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