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Engineered specifically for these applications, the new Fel-Pro PermaTorqueMLS gasket set provides the robust combustion seal needed to contain extreme combustion pressures and temperatures common to naturally aspirated, turbo/supercharged and nitrous-equipped performance engines. Each gasket is composed of five layers of fully-hardened stainless steel, precisely engineered sealing beads and a sophisticated stopper layer similar to the Fel-Pro technology that has won dozens of Nextel Cup events and which seals defending Cup champion Kurt Busch’s engines. The new head gaskets feature 3.425-inch bores and offer a compressed thickness of .055-in. for compressed volume of 8.3 cubic centimeters.
“PermaTorqueMLS has enjoyed tremendous success in NASCAR, NHRA and IHRA racing, as well as in high-output street engines,” said Fel-Pro Performance Products Manager Ron Rotunno. “We’re pleased to bring the proven benefits of this Fel-Pro technology to engine builders and enthusiasts in the performance category.”
Unlike other MLS head gaskets, Fel-Pro PermaTorqueMLS gaskets feature a proprietary aftermarket coating that accommodates a wider range of surface finishes than do other MLS gaskets. The PermaTorqueMLS design also allows for lateral and vertical motion of the cylinder head – caused by combustion pressures and extreme temperatures – without compromising sealing performance.
Many automotive engines are now factory-equipped with multi-layer steel head gaskets, which are able to provide long-term combustion and fluid sealing in spite of lighter-weight head and block castings and increased operating temperatures. Fel-Pro PermaTorqueMLS technology delivers a complete, durable seal in these challenging operating conditions and with less-than-perfect surface finishes.
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