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Old 10-21-2009, 09:35 PM
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Diesel911 Diesel911 is offline
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Join Date: Sep 2007
Location: Long Beach,CA
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My year 123 has the Valve Rotators only on the Exhaust Valves.

Getting back to the Oil consumption and burnt valve issue.

If the Valve stems and Guides are worn the Valve will not go up and down straight. The wears the Valve Sealts crooked and does the same to the Valve Stem seals.
It also allows clearance for Oil to get through more easily.

Carbon deposits on the Valve Seats will hold the Valves open to some degree.

Where I worked we took in 4 Ford Gasoline Truck (not pick-up trucks) Engine heads from V-8s. Both sets of Heads had Valve Rotators on the Exhaust Valves. On both sets of Heads the Exhaust Valves had been worn down to Knive edges by the Rotatators
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Last edited by Diesel911; 10-21-2009 at 09:42 PM.
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