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Antique Gas Engine Discussion

Galloway: Leaking head gasket


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Old 08-01-2005, 10:32:36 PM
Jack Rath Jack Rath is offline
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Default Galloway: Leaking head gasket

Greetings
I am reworking a 5 HP Galloway. I removed the head and thought I had it well cleaned. I made a new gasket out of the material that Hit and Miss sells. i reassembled and tightened things up and she still leaks rather badly. Should I try some sort of gasket calk, something like Permatex. I did not remove the studs. Perhaps they should come off so i can do a better job cleaning the surface? Any thoughts or suggestions appreciated
John
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Old 08-01-2005, 10:47:44 PM
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Tanner Remillard Tanner Remillard is offline
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Default Re: Galloway: Leaking head gasket

Jack,

You pretty much HAVE to put a sealer on the head. I use a Red high temperature silicon gasket material that I buy at NAPA. I have always used it and it has never screwed me over.
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Old 08-02-2005, 12:06:57 AM
Gasengin Gasengin is offline
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Default Re: Galloway: Leaking head gasket

You must have some imperfections in the head or block. On my 6 hp Galloway, I had to have the head chucked in a large lathe to level the surface.
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Old 08-02-2005, 07:46:35 AM
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Chuck Martin Chuck Martin is offline
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Default Re: Galloway: Leaking head gasket

I have always used thick white grease on the head gaskets of model A engines, oilfied engines and smaller ones as well. Makes it easy to take back
apart, and always stops the leak.
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Old 08-02-2005, 11:02:57 AM
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Craig A Craig A is offline
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Default Re: Galloway: Leaking head gasket

HYLOMAR is a Permatex product MADE for head gaskets....and it WORKS.
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Old 08-02-2005, 11:28:41 AM
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Elden DuRand Elden DuRand is offline
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Exclamation Re: Galloway: Leaking head gasket

Quote:
Originally Posted by Jack Rath
Greetings
I am reworking a 5 HP Galloway. I removed the head and thought I had it well cleaned. I made a new gasket out of the material that Hit and Miss sells. i reassembled and tightened things up and she still leaks rather badly. Should I try some sort of gasket calk, something like Permatex. I did not remove the studs. Perhaps they should come off so i can do a better job cleaning the surface? Any thoughts or suggestions appreciated
John
John:

You can check for and fix minor problems with flatness of the head and deck surface by using a large file.

Remove anything that normally sticks up (studs, valves, etc.) then take a large flat file and draw it across the surfaces in a random fashion, holding it flat against them as you work.

The filing pattern will tell you where your high spots are located. If the surfaces aren't too bad, you can actually get them pretty flat using this method.

As said by others, after using the file, you can also use a gasket sealing compound. I consider machining the surfaces flat to be a sort-of last resort method.

Let us know how you do.

Take care - Elden
http://home.cybertron.com/~edurand
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