View single post by Jensen Healey
 Posted: 03-31-2009 05:59 am
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Jensen Healey



Joined: 03-11-2005
Location: San Anselmo, California USA
Posts: 983
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Move the crankshaft to top dead center. Turn 90 degrees so no pistons can interfere with the valves. Loosen or remove the timing belt.

Put the pulley on the intake side with the "110 in" marking towards the front of the car so you can read it when it's installed.

Put the pulley on the exhaust side so you can read the "110 ex" when it's installed.

Align the marks as Joachim says in his post. Tighten the belt. If you hear belt whine when running the engine, the belt is too tight. Try the 45^ test or tune the belt to G on the musical scale.

 110 in/ 110 ex is recommended for best performance for all engines with stock cams and was standard for '74 engines.

If the belt slipped one tooth, that's 18 degrees since the cam turns at half the crankshaft speed. I don't know if that's enough to cause contact between the pistons and valves.

You should consider a compression check to make sure the valves aren't bent.

Good luck and good wishes,

Kurt