Hey there, Was wondering if anyone knows of a link on how to set timing on my 97 12v. My truck is stock for now with fuel plate coming soon so any thought on what it should be set to at my elevation 5,280ft (Denver) any help you can give would be greatly appreciated

 

How to find true TDC, rather than the inaccurate cam timing pin method;

Find TDC using the drop valve method. I pull #1 valve cover and turn the motor over backwards till I see #1 intake valve opening, then I loosen the exhaust valve adjuster and tighten it down to zero lash and give it 2 ½ turns or rounds. Then I turn the motor over in the normal rotation till the piston tags the valve, with a TDC pointer in place and pointing to the balancer I make a mark on it. Then I loosen the exhaust valve and turn the motor say ¼ turn past the first mark going in the normal rotation. Then I tighten the exhaust valve adjuster the same amount as I did the first time so the relation is the same, once this is done I turn the motor over backwards via the alternator till the piston hits the valve once again. Now make another mark as you did the first time. What you did was find a relationship between either sides of the upstroke, now with the two marks made measure the distance and divide it. That is you TDC of the motor and gives you something to go by.


How to time it;

http://dodgeram.info/tsb/1994/18-10-94a.htm

Charts (some small differences in them)

http://www.pdrdiesel.com/oldsite/TechPTiming.htm

http://www.cumminsforum.com/forum/94...ing-chart.html