Cometic Toyota 4AGE or 4AGZE 20 valve (83mm .040 Thick) Multi Layer Steel Head Gasket
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Cometic Gasket, Inc., is a leading worldwide supplier of shelf stock, custom and short-run gaskets for the performance aftermarket, original equipment and motorsports industries. gaskets to customers worldwide.
MLS (Multi Layer Steel)
The Cometic MLS gasket is comprised of three to five layers of Stainless Steel. Cometic uses Stainless steel for increased strength, its ability to rebound and corrosion resistance. The outer layers of the gasket are embossed and coated on both sides with a Viton rubber material designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 250C or 482F.
The center or shim layer of the gasket is comprised of an uncoated Stainless Steel layer, which can be varied to accommodate multiple thickness requirements. The MLS gasket is ideal for any kind of head and block combination. By design the MLS gasket promotes an even torque load across the sealing surface allowing for measurable reduced bore distortion.
| Product Name | Cometic Toyota 4AGE or 4AGZE 20 valve (83mm .040 Thick) Multi Layer Steel Head Gasket |
|---|---|
| Brands | Cometic |
| Engine | 4AGE |
| Make | Toyota |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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What surface finish is required for an MLS head gasket?
MLS gaskets require a smooth, consistent RA surface finish on both the block and head. Your machinist should follow the gasket manufacturer’s recommended RA values.
Can I reuse head studs or bolts?
Quality studs may be reused if undamaged. Torque-to-yield bolts are usually single-use. Follow the fastener manufacturer’s recommendations.
What is the recommended torque specification for the Cometic MLS head gasket on a 4AGE?
The torque specification for the Cometic MLS head gasket on a Toyota 4AGE should follow the manufacturer's guidelines for the specific head bolts or studs used. Generally, for ARP head studs, a torque value of around 75 ft-lb is common, but always refer to the latest ARP instructions for accuracy.
What are the benefits of using the Cometic MLS head gasket on a 4AGE or 4AGZE?
The Cometic MLS head gasket offers several advantages, including increased strength due to its stainless steel construction, enhanced sealing capabilities with the Viton coating, and reduced bore distortion thanks to its design that promotes even torque load across the sealing surface. This makes it suitable for high-performance applications.
Is any special preparation needed before installing the Cometic MLS head gasket?
Yes, before installation, ensure that both the cylinder head and engine block surfaces are clean, flat, and free of any debris. A proper surface finish is crucial for the MLS gasket to seal effectively. Additionally, check that the head bolts or studs are in good condition and properly lubricated as per the manufacturer's recommendations.
Can the Cometic MLS head gasket be used with a stock 4AGE engine?
Yes, the Cometic MLS head gasket can be used with a stock 4AGE engine. However, it is particularly beneficial for modified engines or those running higher boost levels, as it provides superior sealing and durability under increased pressure and temperature conditions.
What thickness is the Cometic MLS head gasket, and how does it affect compression?
The Cometic MLS head gasket for the 4AGE is 0.040 inches thick. This thickness can affect the engine's compression ratio, so it's important to calculate the new compression ratio based on the gasket thickness and any other modifications to the engine. Always consult with your engine builder to ensure compatibility with your specific setup.
