Thread: Ironhead Ok where is the oil?
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Old 17th August 2009
madfox22 madfox22 is offline
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The oil transfer valve allows oil from the crankcase to enter the primary side only if you have excess oil, or pressure in the crankcase.
Excess crankcase pressure from worn rings, or valve guides. Excess oil from the oil pump check valve seeping, or from other wet sumping problems.
If you plug the oil transfer valve, and still have the excess oil, or the excess crankcase pressure problem, then the oil will end up going out the breather pipe instead of going into the primary.
My brother always had to add to his oil tank, but drain about the same amount from the primary.
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