![]() ![]() Rigidly mounted pointer to indicate degree wheel position Positive stop TDC finding tool (either the spark plug type or a block mounted type)Ĥ. ![]() Metric or imperial dial indicator and method of mounting it to the head or blockģ. (Remember to take it back out once you are done and put the proper hydraulic lifter back in)ĮQUIPMENT REQUIRED to properly degree your camshaftĢ. This is easiest done by pulling the plunger out of a hydraulic lifter and replacing it with a piece of turned silver steel (or similar) that sits properly inside the lifter body and is shaped at the valve end to clear the retainer and give a perfect flat contact to the valve tip. Install a pushrod that has an oil hole in it, so that the tip of the dial indicator locates properly in the end of the pushrod.įor over head cam engines that have hydraulic cam buckets, such as Nissan RB20 or Suzuki G13B or for over head cam engines with rocker arms and hydraulic lifters, such as Mitsubishi 4G63 or Nissan SR20, you will need to make a solid lifter that gives 0.1mm valve clearance when the cam is on the base circle. Hydraulic lifters must never be used when degreeing cams, they can bleed down and give you false readings.įor Pushrod style engines this is easy, if your camshaft choice is hydraulic roller or hydraulic flat tappet, simply purchase a solid equivalent of your lifter. The best place to start is to install your cam on factory marks using the engine manufacturer's procedure.īe absolutely certain that you use the correct type of lifter for the camshaft that is being Degreed. Thus properly degreeing your cam is essential.Īssuming that you have carried out all of the preliminary static measurements and clearance checks for valve to valve, valve to piston, retainer to stem seal, cam to head casting, cam to con-rod, spring seat pressure, distance to coil bind at full lift etc, all parts are clean, and lightly oiled you are ready to start dialing in your camshaft. ![]() ![]()
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January 2023
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