Gaskets technical support

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FAQ's

What is the Maximum temperature on your “UltraSeal” exhaust gasket material?
Mr. Gasket #5960 & #5961 are rated at 1400 degrees.
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What exhaust gaskets do you offer in copper & aluminum for Chevrolet motors?
Mr. Gasket offers CopperSeal exhaust gaskets, which are manufactured from dead soft (solid) .043" thick copper material, with a .051" embossment around each exhaust port to seal irregular surfaces. Total gasket thickness is .094". These are used for high performance street, drag race, oval track and turbo-charged (extreme heat) applications and available in various port sizes.

Mr. Gasket also offers Aluminum Layered exhaust gaskets, which are manufactured from dead soft aluminum .125" thick and compress down to .060" to create a tight leak-proof seal. These are used for high performance street, drag race and oval track use.
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What’s the compressed thickness on head gaskets from #7100 gasket kits?
.048"
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Can fuel flow through the 12S/42S/12D pumps when they are turned off?
No, the pumps do not hold pressure when off and fuel cannot flow without pressure.
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What is the part number for the round edge mount plate on a Hilborn style air scoop?
This is a special order item, Mr. Gasket #97002392.
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What transmission dipstick will fit a GM 700R4?
Mr. Gasket #9704G will work for most car applications. We do not have longer dipsticks used in vans.
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What grommets do I need to use on Mr. Gasket #9819 & #9847 chrome valve covers?
These are a cap covers that fit over your factory valve cover so no grommets are necessary.
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What is the O.D. on your Chevrolet Small Block crank & water pump pulleys?
Pulley dimensions are listed on page 26 in our 2011 Mr. Gasket catalog.
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Gasket Installation

EXHAUST GASKET INSTALLATION

A unique feature on many of our exhaust gasket applications is the slotted end holes. They allow you to easily slide the gasket between the cylinder head and header flange after the end bolts have been started. An alternate method on gaskets without the slotted end holes is to use starter studs or Ultra-Seal header studs to temporarily hold the gasket in place. Slide the header flange onto the studs and, if using starter studs, replace with the proper type of header bolts.

CAUTION: Use care not to overtighten headers as this can warp the flanges causing an exhaust leak. It does not matter which side of the exhaust gasket is placed against the cylinder head or header flange.

NOTE: No gasket sealer is needed with the installation of Mr. Gasket Performance, Ultra-Seal, CopperSeal, Layered Aluminum or MLS Embossed exhaust gaskets.

VALVE COVER GASKET INSTALLATION

If existing valve covers are being reused, clean and degrease before installing. Use gasket remover to aid in the removal of old gasket material. Check for warped or bent flanges and straighten as necessary (this is very important to insure a leak-proof seal).

• Clean any oil residue off valve cover flange surfaces Apply a thin coat of Mr. Gasket #78080G silicone to hold gaskets in place during installation.

• Install mounting bolts and tighten evenly in a criss cross pattern. Use care not to overtighten as this will cause the flanges to bend.

OIL PAN GASKET INSTALLATION

If existing oil pan is being reused, clean and degrease before installing. Use gasket remover to aid in the removal of old gasket material. Check for warped or bent flanges and straighten as necessary (this is very important to insure a leak-proof seal).

• Clean any oil residue off oil pan flange surface. Apply a thin coat of Mr. Gasket #78080G silicone to hold gaskets in place during installation.

• Install mounting bolts and tighten evenly in a criss-cross pattern. Use care not to overtighten as this will cause the flanges to bend.