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Old 05-06-19, 06:41 AM
Geoff Dowdle Geoff Dowdle is offline
Join Date: Jul 2008
Location: Sydney, Australia
Posts: 313

Bela ,
The standard valve clearance for
400 - 403(A engine) is .002 inch cold Inlet & Exhaust
late 403(AB2 engine) - 406 is .005 inch cold " "

But very few engines now have standard factory cams . Most have either
been re ground to another specification or the cam replaced and the clearance of these could be different from original standard cam .

Do you know the valve timing of the engine .
Inlet opening & closing , Exhaust opening and closing to try to identify which cam is fitted.

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