Estimating timing chain wear
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On a timing set having various keyways for advancing or retarding the cam timing, use the keyway that has the dot or pip mark directly above the keyway, not offset to either side if you want the timing to be straight up, having no advance or retard, like the 1972-back timing sets. | On a timing set having various keyways for advancing or retarding the cam timing, use the keyway that has the dot or pip mark directly above the keyway, not offset to either side if you want the timing to be straight up, having no advance or retard, like the 1972-back timing sets. | ||
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| + | {| | ||
| + | |[[File:Retarded ford cam1.jpg]] | ||
| + | |[[File:Straight up fprd cam1.jpg|thumb|300px|Example of Ford timing set adjusted to the "straight up" position]] | ||
| + | |} | ||
==Effects of changing lobe separation angle== | ==Effects of changing lobe separation angle== | ||
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===Wider (larger number) LSA=== | ===Wider (larger number) LSA=== | ||
| − | *>/= 112 degrees | + | *Generally >/= 112 degrees |
*Raises torque to higher RPM | *Raises torque to higher RPM | ||
*Reduces maximum torque | *Reduces maximum torque | ||
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===Tighter (smaller number) LSA=== | ===Tighter (smaller number) LSA=== | ||
| − | *</= 110 degrees | + | *Generally </= 110 degrees |
*Moves torque to lower RPM | *Moves torque to lower RPM | ||
*Increases maximum torque | *Increases maximum torque | ||
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