Resource Library: Virtual Tours
Gas Engine Head Remanufacturing
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Cast iron heads are wet magnafluxed
to detect any cracks or flaws.
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Aluminum heads are inspected
in
all critical areas to ensure a
sound casting.
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Valve guides are reamed to
accommodate oversize valve
stems, and ensure valves are
properly aligned with the seat.
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Cylinder heads are resurfaced
to a finish of 50-160 Rz for
aluminum, 100-300 Rz for
cast iron, to ensure proper
mating of heads to the block.
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Three-angle valve seat cutting
allows for a precise, consistent
mating surface for valves.
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Heads are assembled with a
standard
set of new valves, springs, seals and keepers for total performance
and reliability. (Import applications receive new or remanufactured valves and springs.)
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O.H.C. heads are align
bored to ensure proper
camshaft alignment, and
proper oil clearances.
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All JASPER cylinder heads
are
vacuum tested to ensure correct
valve seating, so important for
long valve life.
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