Cylinder Head Valves
Note: For more information, refer to the following publications: Guidelines for Reusable Parts, SEBF8002, "Valve, Valve Springs, Valve Rotators and Locks" and Guidelines for Reusable Parts, SEBF8034, "Valve and Valve Spring Specifications".
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Illustration 1 | g00274292 |
(1) Spring
- Inside diameter ... 21.996 mm (0.8660 inch)
- Test length ... 42.18 mm (1.661 inch)
- Free length after test ... 62.74 mm (2.470 inch)
(2) Distance from the top of the cylinder head to the top of the valve guide ... 32.3 ± 0.80 mm (1.27 ± 0.03 inch)
(3) Bore in a new valve guide that is installed in the cylinder head ... 9.487 ± 0.025 mm (0.3735 ± 0.0010 inch)
(4) Diameter of valve head
- Exhaust valve ... 41.81 ± 0.13 mm (1.646 ± 0.005 inch)
- Inlet valve ... 44.98 ± 0.13 mm (1.771 ± 0.005 inch)
(5) Angle of valve face ... 19.25 ± 0.25 degrees
Prior to installation of the valves, coat the valve stems with clean engine oil.
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Illustration 2 | g00935796 |
(6) Depth of the bore in the cylinder head for the valve seat insert ... 13.01 ± 0.15 mm (0.512 ± 0.006 inch)
(7) Angle of the valve seat insert's face ... 20.25 ± 0.50 degrees
(7) Diameter
- Diameter of exhaust valve seat insert ... 42.840 ± 0.013 mm (1.6866 ± 0.0005 inch)
- Bore in the cylinder head for the exhaust valve seat insert ... 42.774 ± 0.025 mm (1.6840 ± 0.0010 inch)
- Diameter of inlet valve seat insert ... 46.025 ± 0.013 mm (1.8120 ± 0.0005 inch)
- Bore in the cylinder head for inlet valve seat insert ... 45.949 ± 0.025 mm (1.8090 ± 0.0010 inch)
- Temperature of the valve seat inserts for installation into the bores in the bottom of the cylinder head ... -62 °C (-80 °F)
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