steel shim head gasket coatings? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 09-02-2008, 08:15 AM
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steel shim head gasket coatings?

Hey, what are you guys using to coat steel shim head gaskets? The last time i used this type of gasket I used the copper spray, and another time I used a red spray-both made by permatex but this was years ago. I also heard regular aluminum colored spray paint works good. Just curious if anything has changed or there's better products out there now. Bob
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Old 09-02-2008, 08:23 AM
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When I used one I used the copper spray.
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Old 09-02-2008, 09:27 AM
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I use a clean flat cylinder head surface to cover the gasket. Then I install the head bolts and torque them down. Thats all that is required.
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Old 09-02-2008, 05:54 PM
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High-temperature aluminum paint. One coat allowed to dry, then another light coat, installed while tacky. That's the way the old dude told me how to do it way back yonder.
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Old 09-02-2008, 06:04 PM
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Hylomar if you can find it.
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Old 09-02-2008, 06:29 PM
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Permatex "high tack spray-a-gasket" Is pretty much the cats behind for tin gaskets. Also in a pinch, phone your local dodge dealer, and ask for the head gasket sealant used on 2.0l neons. They are both in half sized spray cans.
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Old 09-02-2008, 08:00 PM
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Clean both contact surfaces well with contact cleaner and let dry, clean head gasket with contact cleaner and let dry.

Install immediately.

I've seen too many gasket coatings cause the gasket the creep and then blowout at high compressions and pressures to recommend any type of sealer for this type of gasket interface.

Just my opinion.

BTW I've heard plain gasoline works well also.
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Old 09-02-2008, 10:35 PM
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Steel shims?

Plain, right out of the package.

Heads & deck properly spec'ed for flatness, of course.
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Old 09-03-2008, 05:39 AM
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The surfaces are flat and smooth-should be perfect for the steel shim gasket. But I think I'll use a coating of some type on both surfaces. I also notice corrosion around the coolant passages on every engine I've pulled apart when no sealers were used, hopefully the coating will avoid this if for no other purpose.
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