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Old 08-24-2020, 12:51 PM   #1
Don
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Default Steel head gaskets

What do I put on a 21 stud steel head gasket with cast iron heads to get a good seal?? Copper coat,grease,or silver paint or nothing
I used copper coat on a composit gasket the other day,had a stuck valve,and removed head and gasket came apart,Joes had the steel for $20 !thoight I would try them,,,
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Old 08-24-2020, 01:01 PM   #2
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Default Re: Steel head gaskets

Don, I have built countless flatheads and have applied copper-coat to each and every head gasket.
I would not consider anything else. It works - period.
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Old 08-24-2020, 04:33 PM   #3
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Default Re: Steel head gaskets

Same here on v8s and 4cyl Ts
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Old 08-24-2020, 04:44 PM   #4
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Default Re: Steel head gaskets

I always just use a good grease on all gaskets. Never had a problem with seal and they are easy to remove. My 2. Tell me why I'm wrong.
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Old 08-25-2020, 05:33 AM   #5
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Default Re: Steel head gaskets

Coctacted fel pro tech line! Also ,,,guy said copper coat or there was another sealer I forgot,!,,
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Old 08-25-2020, 06:09 AM   #6
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Best gaskets also recommends copper coat. But with cast iron heads I prefer copper head gaskets as they are more malleable, and can sometimes be reused. Steel are fine also and probably less expensive.
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Old 08-25-2020, 08:47 AM   #7
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Default Re: Steel head gaskets

If everything is clean and FLAT it does not matter whether you use a sealant or what type sealant. I have used aluminum paint, copper coat, and nothing without problems when iron heads are installed.


Torque nuts in several even increments and DO NOT over-torque. Go through at least 3 hot-cold engine retorque cycles and drive forever.
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