Quote:
Originally Posted by JSeery
Keep in mind this is not a stock cam, so there is overlap. The intake on number 6 will not be just starting to open in this case. Needs to be in a positions such that the exhaust and intake are the same height above the valve seat.
If the cam spec posted is correct, it would be intake 19 deg BTDC and exhaust 19 deg ATDC. A problem is there is very little valve movement at these positions, that is why cam numbers are given at 20 or 50 degrees, so you can actually detect valve movement.
I have never tried to degree a cam with the head on. I would think you could at least check the exhaust valve if you can get a dial indicator through the sparkplug hole and on the edge of the valve such that it can move without rubbings on anything. If alum head, need to figure out a way to mount the base. Looking for very slight movements during part of the cycle, so everything needs to be very secure.
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There is overlap on a stock cam as well, the point is if the overlap occurs at TDC the valve timing is right .