Heisler head

Lee Wegner · Nov 8, 2011

Is the Heisler head for a F20 a higher compression head or is there other differences?

Old-F20 · Nov 8, 2011

(quoted from post at 14:50:32 11/08/11) Is the Heisler head for a F20 a higher compression head or is there other differences?

smaller combustion chamber for more compression

robgIN · Nov 8, 2011

also has a larger intake valve. The top of the combustion chamber is approximately .300" lower than on an IH head. Uses smaller spark plugs 14mm instead of 7/8" pipe thread.

Heisler head

Lee Wegner

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Old-F20

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robgIN

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