Estimating timing chain wear
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*Increases piston to intake valve clearance | *Increases piston to intake valve clearance | ||
*Decreases piston to exhaust valve clearance | *Decreases piston to exhaust valve clearance | ||
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| + | ====Ford retarded timing sets==== | ||
| + | ;According to Crane<nowiki>:</nowiki> | ||
| + | <blockquote> | ||
| + | '''Note:''' Many 1972 and later Ford-Mercury V-8 engines are originally equipped with a retarded crankshaft sprocket. This may cause idling and performance problems when installing aftermarket camshafts. Eliminate this problem by installing a pre-1972 crankshaft sprocket, (the non-retarded sprocket will have the alignment dot and keyway slot directly in line with each other), or by degreeing in your camshaft, or with appropriate Crane timing chain and gear set. | ||
| + | </blockquote> | ||
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| + | An aftermarket performance timing set can also be used. It is best to degree the cam, that way you will know for sure where the cam is in relation to TDC. | ||
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| + | On a non-adjustable timing set having just one keyway, if it's like the 1972-back timing sets the dot on the crank gear will be in alignment with the keyway. A set having the dot offset to the left of the keyway (as seen if you were standing in front of the vehicle looking over the radiator at the engine) will give retarded timing. | ||
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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. | ||
==Effects of changing lobe separation angle== | ==Effects of changing lobe separation angle== | ||
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