Post by
rogoman »
https://forums.nicoclub.com/rogoman-u37451.html
Sun Jul 01, 2007 4:23 pm
If the head is already installed, the easiest way to set your cam timing, is to set TDC on the compression stroke. Remove all the spark plugs, remove the valve cover, and remove both cams. Have someone tap the starter while you have your thumb over the #1 spark plug hole. Once you feel compression, insure that the block timing pointer at the front pulley is pointing to the zero mark on the pulley. Remove distributor cap and insure that the rotor is pointing to #1 firing position. The #1 piston is now sitting at TDC compression stroke. Remove the upper and lower timing covers.
Now look at the lower timing chain for the chain mating (silver) mark which should be at the crankshaft sprocket gear mark. The top end of the timing chain mating (silver) mark should be at the large idler sprocket gear mark. The upper timing chain mating (gold) mark should be at the small idler sprocket gear mark. The other two chain mating marks should at their cam gear marks.
If the head is not yet installed, just turn the crank until #1 piston is at TDC and that the block timing pointer at the front pulley is pointing to the zero mark on the pulley. At this point DO NOT TURN THE CRANK untill the timing chains are fully installed. The head can now be installed WITHOUT the cams. Next, install the cams as shown in the picture below. Now follow the procedure that I've outlined in the previous paragraph for installing the chains.
Here's a picture:
Modified by rogoman at 10:09 AM 7/2/2007