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What is NPS?
What is NPS about?
Small Block
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Slant 6
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Small Block
Big Block
6 cylinder

Small Block
Big Block
6 cylinder

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Positive Valve Stem Seals

Maximises oil control with Negative Supercharging

Negative Pressure Supercharging produces such a powerful vacuum, it pulls a large volume of oil past the valve stem guides over a short period of time with umbrella, teflon rubber or full teflon type valve stem seals. Therefore, the Negative Supercharging Kits and Impulse Crate Engines MUST use our all rubber 2-ring type positive seals to maximise oil control with Negative Pressure Supercharging and prevent an excessive amount of oil from being pulled into the cylinder.

Impulse Engine Technology P/L

PO Box 986 Randwick NSW 2031 Australia
Ph: (02) 9398 5544
Fax: (02) 9398 5644

International: Ph: +(612) 9398 5544
Fax: +(612) 9398 5644

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Inventor of Negative Pressure Supercharging

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