Modified Cylinder Heads
NEW specs and features applied to conventional cylinder heads help...
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Trap the higher vacuum in the cylinder
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Pull a larger intake charge into the engine
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 Negative Pressure Supercharging uses conventional cylinder heads that are modified with a combination of special and conventional specs. This helps trap the higher vacuum produced by the NPS headers in the cylinder and helps pull a larger intake charge into the engine.
For example,
To help trap the higher vacuum in the cylinder and prevent it from pulling the intake charge into the exhaust system the heads use...
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Small exhaust valves
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Small exhaust ports
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Low exhaust valve lift
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Low exhaust flow
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Special pocket porting
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Special valve and seat angles
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To help pull a larger intake charge into the engine with the higher vacuum the heads use...
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Large intake valves
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Large intake ports
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High intake valve lift
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High intake flow
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Conventional race pocket porting
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Conventional race valve and seat angles
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To optimise oil control with the higher vacuum the heads use...
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Special intake positive valve stem seals to prevent an excessive amount of oil being pulled past the valve stem guides into the cylinder
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Conventional exhaust positive valve stem seals to prevent oil being pulled past the valve stem guides into the exhaust system
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| 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
Email Us
Inventor of Negative Pressure Supercharging
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