CharlieH98 said:2. Pull the spark plugs and rotate the crank to set the motor to TDC. TDC mark on the crank pully should be straight up and the #1 piston on the compression stroke. See Naji's site a pic of the cam positions. I think I used a 1" socket to turn the crank or you can spin the wheels with it in gear and up on stands. If you're just doing the intake cam, maybe you can skip this step. But, still not a bad idea to have it at TDC.
Crono1321 said:Its because when you remove the spark plugs its easier to turn the motor over by hand.