Federal-Mogul Introduces New Fel-Pro Severe Duty Head Gaskets - Engine Builder Magazine
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Federal-Mogul Introduces New Fel-Pro Severe Duty Head Gaskets

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According to the company, the new Fel-Pro PermaTorque MLS “Severe Duty”
head gaskets combine Federal-Mogul’s multi-layer-steel
technology with additional design features that accommodate extreme
head lift. The gaskets are available in two design configurations:
“SD4,” featuring four layers of embossed full-hard stainless steel and
no shim layer, resulting in additional “spring” action; and “SD5,”
which comprises four embossed stainless steel layers and one shim
layer, providing the same “spring” action and additional (up to
.0052?) thickness.

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Federal-Mogul sealing system engineers used Linear Variable
Displacement Transducers to determine the location and amount of head
lift encountered in a variety of small-block Ford engines. This insight
into real-world operating conditions enabled them to create a head gasket design that exceeds the sealing
requirements of supercharged and turbocharged engines, the company says.

Each active layer within the gasket features
precisely engineered sealing beads to maintain contact pressure between
the cylinder head and block. According to Federal-Mogul, these head
gaskets also feature an advanced rubber coating that accommodates a
wide range of surface finishes and ensures superior reliability in all
applications.

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For more information regarding Fel-Pro PermaTorque MLS Severe Duty
performance head gaskets, visit www.felpro-only.com.

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