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Old 09-06-2019, 09:11 PM
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header gaskets

Been over thirty years..so have to ask. Do header gaskets go on dry now. If I remember, we used to spray them with something. Is that still the norm? If so, what is used?

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Old 09-07-2019, 07:43 AM
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I think that was a copper spray. However if the surfaces are flat, the gasket will seal fine, bolts need to be secured evenly.

To much goop unnecessarily used ...... IMO

Pep
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Old 09-07-2019, 08:22 AM
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Having tried just about everything on the market, I can say that the best available today are Remflex. Just pay attention to the bolt torque - overtorquing will crush the gasket and mess it up.
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Old 09-07-2019, 08:29 AM
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I agree with Joe, Remflex are working great for me. I torqued them in three steps which may have been overkill and used locking header bolts. I have an old set of hookers that tended to blow out other gaskets.
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Old 09-07-2019, 09:51 AM
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Quote:
Originally Posted by skinnymike View Post
Been over thirty years..so have to ask. Do header gaskets go on dry now. If I remember, we used to spray them with something. Is that still the norm? If so, what is used?
Just use Remflex, or all metal copper, or alumunim gaskets.

Makes life simpler for a few addirioal dollars.

Bogie
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Old 09-07-2019, 11:26 AM
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I use the factory type perfected metal and think of any particular time they failed.
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Old 09-08-2019, 07:04 AM
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I quit using header gaskets. I bought a set of Sanderson headers for the roadster. The instructions said not to use a gasket. Instead put a 1/8" bead of high temp red silicone around the ports on the head and let it sit overnight and cure. Then install the headers. It worked great on the roadster.
I had built a set of headers for the model t coupe and always had trouble getting them to not leak with gaskets. So I tried the Sanderson method. After putting the 1/8" bead on the heads and letting it cure, I put a very thin coating of silicone on the header flanges and installed the headers, I finally had sealed headers.
It's a lot cheaper than gaskets. You might give it a try.

Last edited by jaw22w; 09-08-2019 at 07:10 AM.
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Old 09-11-2019, 07:14 PM
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I have been using Fel Pro gaskets with a steel core for 20+ years now. Never had a leak with any of them. Nor have I had a header bolt come loose.

For a small block Chevy with stock port sizes, P/N #1444 is ingrained in my brain!
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Old 09-11-2019, 09:48 PM
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55s & 327 were a popular build in high school, and the 301.

Same here, my favorite header gasket set, a metal and gasket sandwich.

Good seal never had a header bolt back out. Prefer allens, for a cleaner machine appearance

Pep
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Old 09-12-2019, 04:14 AM
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With this Fel-Pro stuff, I've never had a leak or replaced one....


https://www.jegs.com/i/Fel-Pro/375/2499/10002/-1


Crank the bolts home. Never come loose either.
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Old 09-12-2019, 04:28 PM
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Quote:
Originally Posted by rip-tide View Post
Same here, my favorite header gasket set, a metal and gasket sandwich.
That's a good way to describe them!
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