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Dumb question about head gaskets

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Old Nov 1, 2012 | 12:36 PM
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Default Dumb question about head gaskets

Hi, time for another dumb question. I have been looking at the Felpro 1094 gasket, trying to find the cheapest place to buy from. Are there two different 1094 gaskets? Is one a plain steel shim, and another that has that rubber coating? I don't want to order it, and find that I have ordered the wrong thing. I plan on using it with aluminum heads on an iron chevy 350 block. If I end up with an uncoated gasket, is there something I should spray on it before installing?


Keep the shiny side up!
Scott

Last edited by scottyp99; Nov 1, 2012 at 12:54 PM.
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Old Nov 1, 2012 | 01:04 PM
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This one maybe?

http://www.summitracing.com/parts/FPP-1094/

Or this one:

http://www.summitracing.com/parts/fe...make/chevrolet

Hmm, one is a Z1094 and the other is a Q1094. I can't tell the difference. Can you tell the difference?

Last edited by resdoggie; Nov 1, 2012 at 01:15 PM.
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Old Nov 1, 2012 | 03:17 PM
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a small difference in the compressed gasket thickness .024. Like that's going to be a deal.

The coated gaskets like those are good for aluminum heads on an iron block. No addtional sealer needs to be applied. The coating takes care of it. Install using the correct torque sequence, once it's running and hot, let it cool and retorque. (I've rechecked torque on a couple of different engines using this style gasket and have yet to find any that were off)
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Old Nov 1, 2012 | 03:39 PM
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Originally Posted by TimAT
a small difference in the compressed gasket thickness .024. Like that's going to be a deal.

The coated gaskets like those are good for aluminum heads on an iron block. No addtional sealer needs to be applied. The coating takes care of it. Install using the correct torque sequence, once it's running and hot, let it cool and retorque. (I've rechecked torque on a couple of different engines using this style gasket and have yet to find any that were off)
.024? The compressed gasket thickness is supposed to be .015", is .024 a typo or something? I'm not understanding what you're getting at.

Anyway, yeah, the coated gasket is what I'm looking for, but my question is whether there is a coated and an uncoated version. There seems to be some confusion about this, I'm trying to figure out what's going on. If I order a 1094 gasket, and an uncoated steel shim gasket shows up, what am I supposed to do with it? Spray some sort of goop on it? What?


Keep the shiny side up!
Scott
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Old Nov 1, 2012 | 03:52 PM
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I would not use the 1000 series gasket on or with aluminum heads....There is a stainless fire ring in them that will score the heads....aluminum performance heads actually need copper as those used on the L-88`s....However the PT-7733 regular Fel pro gasket would be a better choice sprayed with Red high tack.....

Last edited by Ironcross; Nov 1, 2012 at 03:54 PM.
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Old Nov 1, 2012 | 03:57 PM
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MY bad- I read the compressed VOLUME and then said "thickness".. oops.
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Old Nov 1, 2012 | 04:10 PM
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Originally Posted by TimAT
MY bad- I read the compressed VOLUME and then said "thickness".. oops.
Ah-ha! Makes a lot more sense now! Thanks,


Keep the shiny side up!
Scott
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Old Nov 1, 2012 | 06:32 PM
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FWIW- Edelbrock recommends the Felpro 1047 gasket for 502 Gen V engines. Felpro 1017-1 for 454 and smaller mk IV engines. For use with the aluminum performer RPM heads (both gaskets 'or equivalent' of course).

Lang
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Old Nov 1, 2012 | 10:34 PM
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Originally Posted by scottyp99
Hi, time for another dumb question. I have been looking at the Felpro 1094 gasket, trying to find the cheapest place to buy from. Are there two different 1094 gaskets? Is one a plain steel shim, and another that has that rubber coating? I don't want to order it, and find that I have ordered the wrong thing. I plan on using it with aluminum heads on an iron chevy 350 block. If I end up with an uncoated gasket, is there something I should spray on it before installing?
So, nobody knows, huh? Well, OK, I guess I'll just order my gaskets, and if they show up bare, I'll spray some Hi-tack on them and install them and hope for the best.

Keep the shiny side up!
Scott
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Old Nov 1, 2012 | 11:52 PM
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Q1094 is the rubber coated head gasket, and the one you want.
http://www.summitracing.com/parts/fel-1094

You can find them cheaper if you search online. Just searched on Rock Auto and they have it for $18 and some change.
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Old Nov 1, 2012 | 11:54 PM
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By the way, if you search on Rock Auto just type the 1094 part number and it will pop up. Look at the description and you'll see that it is the rubber coated gasket. I am about to drop in some aluminum heads on my Vette and am planning on using the same gaskets for my Vette.
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Old Nov 2, 2012 | 01:28 AM
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I keep reading references to a Felpro 1094 head gasket that is coated, and a Felpro 1094 gasket that isn't coated, rumors that Felpro stopped coating them last year sometime, I'm just trying to get the straight info, that's all. And, if I end up with uncoated steel shim head gaskets, I'm going to spray Permatex Hi-Tack on both sides before I install them, unless someone can tell me some better product to use. Actually, maybe I'll smear some Indian Head shellac on them. Just kidding! My brother would disown me, he hates that stuff! (Don't tell him, but the only reason I keep that little brown jug in my toolbox is to because it bugs him!)


Keep the shiny side up!
Scott
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Old Nov 2, 2012 | 01:56 AM
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Give some thought to Cometic gaskets, pricey but well worth it
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Old Nov 2, 2012 | 01:59 AM
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Originally Posted by GDaina
Give some thought to Cometic gaskets, pricey but well worth it
Do they make a .015" compressed thickness gasket?


Keep the shiny side up!
Scott
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Old Nov 2, 2012 | 02:01 AM
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Originally Posted by scottyp99
Do they make a .015" compressed thickness gasket?


Keep the shiny side up!
Scott
They will custom make any thickness you want
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Old Nov 2, 2012 | 02:16 AM
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Originally Posted by scottyp99
Do they make a .015" compressed thickness gasket?

http://www.cometic.com/
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Old Nov 2, 2012 | 02:49 AM
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Chevrolet recommended using aluminum paint on their steel shim factory gaskets. I'd check with the gasket manufacturer before jumping out and putting anything on them. The coated gaskets I got from Fel-Pro stated "install without any sealers."Just my $.05 worth.
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Old Nov 2, 2012 | 06:52 AM
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Scotty, what about a PM to Billa or 63Mako? An email to Lars? You know their track record.
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Old Nov 2, 2012 | 08:25 AM
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Originally Posted by Ironcross
I would not use the 1000 series gasket on or with aluminum heads....There is a stainless fire ring in them that will score the heads....aluminum performance heads actually need copper as those used on the L-88`s....However the PT-7733 regular Fel pro gasket would be a better choice sprayed with Red high tack.....
Sorry, but using a copper gasket with an aluminum head would be a disastor. Copper and Aluminum are on the opposisite ends of the metalurgic table and corrode severly......
As for the "tin" head gaskets, when we used them, I always painted with aluminum spray paint for the seal. when the paint was tacky, not wet, but tacky, we installed and torqued down. I still have few "tin" head gaskets in stock. Have not used in years, Al
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Old Nov 2, 2012 | 02:16 PM
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Are you guys aware that the factory used steel head gaskets on the aluminum head BB's? Believe it....
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