As these valves must work at high pressure, the valve faces are accurately ground to shape.
2.
Their cylinders and slide valve faces were lubricated by tallow cups, attached to the sides of the cylinder assemblies.
3.
The cylinders and slide valve faces were lubricated by tallow cups, attached to the sides of the cylinder assembly.
4.
The seat mating angle of an intake seat will typically be one-half the width of the valve face ( on a stock engine ).
5.
Exhaust seats should be about . 060 " less than the valve face, with the mating surface of the seat being . 030 " from both top and bottom of the valve face ( putting the mating of the two in the middle of the valve face ).
6.
Exhaust seats should be about . 060 " less than the valve face, with the mating surface of the seat being . 030 " from both top and bottom of the valve face ( putting the mating of the two in the middle of the valve face ).
7.
Exhaust seats should be about . 060 " less than the valve face, with the mating surface of the seat being . 030 " from both top and bottom of the valve face ( putting the mating of the two in the middle of the valve face ).
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