Nissan RB25 Cometic MLS Exhaust Manifold Gasket
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Nissan RB25 Cometic MLS Exhaust Manifold Gasket.
Also available for RB26.
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 | Nissan RB25 Cometic MLS Exhaust Manifold Gasket |
|---|---|
| Brands | Cometic |
| Engine | RB25 |
| Make | Nissan |
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 thickness options are available for the RB25 Cometic MLS Exhaust Manifold Gasket?
The RB25 Cometic MLS Exhaust Manifold Gasket comes in various thickness options to accommodate different engine setups. The shim layer can be varied, allowing you to choose the appropriate thickness based on your specific application and clearance requirements.
Is the Cometic MLS gasket suitable for high-performance applications?
Yes, the Cometic MLS gasket is designed for high-performance applications. Its multi-layer stainless steel construction and Viton coating provide excellent strength, heat resistance, and sealing capabilities, making it ideal for modified RB25 engines operating under high load and temperature conditions.
What is the recommended torque specification for the RB25 exhaust manifold when using this gasket?
While the specific torque specification can vary, it's essential to follow the manufacturer's guidelines for your exhaust manifold. Generally, ensure that you achieve even torque across all bolts to prevent gasket failure. It's advisable to use a torque wrench and follow a crisscross pattern when tightening.
Can I use the Cometic MLS gasket with aftermarket exhaust manifolds?
Yes, the Cometic MLS gasket is compatible with both OEM and aftermarket exhaust manifolds designed for the RB25 engine. Ensure that the mating surfaces are clean and properly prepared to achieve the best sealing performance.
What are the benefits of using a multi-layer steel (MLS) gasket over a traditional gasket?
MLS gaskets, like the Cometic version, offer several advantages over traditional gaskets, including improved sealing under high pressure and temperature, reduced bore distortion, and enhanced durability. The multi-layer design allows for better load distribution across the sealing surface, making it suitable for performance applications.
