Doughnut Gasket
Junior User
Joined: Apr 2000
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Doughnut Gasket
Any suggestions on how to remove the old doughnut gaskets from the manifolds without damage to the manifold. I dropped the collector pipes and the gaskets are hard as a rock and seem to be stuck to the manifolds pretty good. Thanks for any help.
New User
Joined: Jan 2008
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Doughnut Gasket
I used to use Vise Grips until they crumbled away,if that doesn't work try a hack saw nipping out an 1/8 of it then grab and pull.
Dennis
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
Dennis
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
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From: Inthepast
Doughnut Gasket
[FONT COLOR="#0000ff" SIZE="3" FACE="Veranda"]
On certain manifolds, the "doughnut" was part of the casting or "built-in" if you will, thus not removable. I suspect that is what you have here.
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On certain manifolds, the "doughnut" was part of the casting or "built-in" if you will, thus not removable. I suspect that is what you have here.
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Junior User
Joined: Apr 2000
Posts: 77
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Doughnut Gasket
I suspect you are right Stockman. I have developed a leak and in the past been able to loosen the exaust move it around and tighten it up again to stop the leak. Not this time. I almost think the opening of the exhaust has gotten larger over the years not allowing it to butt up correctly with the manifold.
Elder User
Joined: Aug 1999
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Doughnut Gasket
I've had them be stubborn but abusing them w/ vise grips or channel locks eventually gets them loose if they really are donut gaskets. Often I end up mangling it to the point of breaking through part of it and then it's easy.
BBT
BBT
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From: Inthepast
Doughnut Gasket
[FONT COLOR="#0000ff" SIZE="3" FACE="Veranda"]
I should have mentioned that the original doughnuts were made od cast iron and the replacements are a composite metal-fiber deal. These type are usually locked into the exhaust pipe by the design of the pipe. The pipe is flanged around the outer edge of the doughnut and has a center pipe that fills out the center of the doughnut. The doughnut usually will stay with the pipe due to this design. That's why I suspected this was not a removeable doughnut-type gasket. If it is, the methods described will easily remove it. Good luck.
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[LINK:www.ford-trucks.net/users/stockman|Stockman's Club FTE Site]
[LINK:www.67fordtruck.com|1967 F-Series Registry ( www.67fordtruck.com )]
I should have mentioned that the original doughnuts were made od cast iron and the replacements are a composite metal-fiber deal. These type are usually locked into the exhaust pipe by the design of the pipe. The pipe is flanged around the outer edge of the doughnut and has a center pipe that fills out the center of the doughnut. The doughnut usually will stay with the pipe due to this design. That's why I suspected this was not a removeable doughnut-type gasket. If it is, the methods described will easily remove it. Good luck.
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https://www.ford-trucks.com/dcforum/User_files/StockMan/flag.gif[br][FONT COLOR="#ff0000" SIZE="+2" FACE="Bassett"]Stock Man[/FONT]
[FONT COLOR="#0000ff" SIZE="+1" FACE="Tahoma"]
[LINK:www.ford-trucks.net/users/stockman|Stockman's Club FTE Site]
[LINK:www.67fordtruck.com|1967 F-Series Registry ( www.67fordtruck.com )]
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