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US 4,302,935 AGranted
Adjustable (D)-port insert header for internal combustion engines
OwnerRobert D. Cousimanoinventor
Life of this patent
Estimating the term…
Abstract
Individually adjustable D-port inserts for securement to an engine header and projecting therefrom into exhaust ports to occupy the stagnation areas thereof and in each instance placeable for fine tuning thereof to optimize flow, and removeable with the header without alteration of the exhaust port configuration established thereby.
Claims10
An individually adjustable D-port insert for securement to an internal combustion engine exhaust header without alteration of the exhaust port-passage in the engine head, and comprising;
- a wedge-shaped body to extend into and occupy one side portion of the exhaust port-passage and having an exterior substantially complementary to said one side of the exhaust port-passage and with a leading edge to lie substantially contiguous to said one side of the exhaust passage ahead of the exhaust port and interface engagement with the exhaust header to which the insert is fixedly mounted for extension through the exhaust port and into said exhaust passage.
Dependencies are inferred from the claim text.