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Any help? Cam Timing???

Black33

By Black33,
in Engines & Forced Induction

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JimX Grand Master

JimX

Posted
Posted

Pull gear off, re-align properly with the marks on the backing plate, put it back on. The only way you can get it wrong really is if you don't know about the marks on the backing plate. As I didn't when I was doing things the first time :D

blind_elk Grand Master

blind_elk

Posted
Posted

There are 48 teeth on the cam wheel. That means each tooth is 7.5 degrees of cam, or 15 degrees of crank. Now, when using adjustable cams (I can't remember whether the adjustment is "degrees of cam" or "degrees of crank"), but the usual adjustment is around 4 degrees. So, 1 tooth is at least twice the recommended adjustment.

When fixing it, use a texta to mark the belt and wheel, slip the cam wheel off the camshaft, move the camwheel 1 tooth on the belt (move the 2 marks 1 tooth apart), then slip the camwheel back onto the camshaft (you need to turn the camshaft or the crank slightly to realign the locating dowel).

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