How do you adjust the rocker arms on a Pontiac?
If you are using poly lock nuts, tighten the set screw against the rocker arm stud after the 1/2 turn. Be sure the adjusting nut does not move. (Hold it stationary with a wrench while you use the allen wrench to tighten the set screw.) Thereafter, for added insurance, add a tad more turn to the poly lock nut…just a tad.
How much torque should I put on my rocker arms?
If you’re using grade 8 bolts, such as the Harland Sharp ones we include with our rocker arms, you install them with motor oil and torque them to 25 to 30 foot-pounds. Did you find the recommended reading relevant to this discussion?
How to torque the rocker arms on a 3800pro?
Slowly thread the rocker bolts into the cylinder head. Be sure that the pushrods are correctly positioned into the pushrod seats (see figure 3). Torque rocker bolts to 25 foot pounds using fluid motion to avoid false torque readings. Continue to install each set of two rocker arms until you are complete.
Where is the TDC on a Pontiac rocker arm?
Locate TDC on #1 by locating the ‘0’ on the timing tab with the harmonic balancer line. You can determine whether it’s really the #1 cylinder a couple of ways. One way is too look at the hydraulic lifters. If the hydraulic lifters are down and level you’re on # 1 TDC.
Do you need to adjust rocker arms on a Pontiac?
Whether you have decided to stay with the stock type stamped rocker arms or Competition Cams Magnum Rollers Rockers as pictured here, or something far more exotic, you will need to adjust valve lash. Torquing the adjusting nut per the old Chilton’s to 20-25 ft pounds won’t work on any heads that have been milled.
If you’re using grade 8 bolts, such as the Harland Sharp ones we include with our rocker arms, you install them with motor oil and torque them to 25 to 30 foot-pounds. Did you find the recommended reading relevant to this discussion?
Slowly thread the rocker bolts into the cylinder head. Be sure that the pushrods are correctly positioned into the pushrod seats (see figure 3). Torque rocker bolts to 25 foot pounds using fluid motion to avoid false torque readings. Continue to install each set of two rocker arms until you are complete.
How do you set the valve lash on a Pontiac?
Use a feeler gauge, set to the correct valve lash, and place it between the tip of the valve stem and rocker arm. Adjust until you arrive at the proper setting and lock the adjuster in place. 4. After the intake valve has been adjusted, continue to rotate the engine, watching that same intake valve.
If you are using poly lock nuts, tighten the set screw against the rocker arm stud after the 1/2 turn. Be sure the adjusting nut does not move. (Hold it stationary with a wrench while you use the allen wrench to tighten the set screw.) Thereafter, for added insurance, add a tad more turn to the poly lock nut…just a tad.
Locate TDC on #1 by locating the ‘0’ on the timing tab with the harmonic balancer line. You can determine whether it’s really the #1 cylinder a couple of ways. One way is too look at the hydraulic lifters. If the hydraulic lifters are down and level you’re on # 1 TDC.
What to do about pushrod rocker arms on GM 3400?
If they are the rocker arm studs may have pulled the threads out of the cylinder head. If that happened you would need to drill tap and using Helli-Coil to repair. I just completed this job, and after assembly car worked and ran fine. Made a test drive of 3-5 miles, Axel from stop as well as while moving.
What should I know about the rocker arms?
Rocker arms are just torqued to specs. The most important thing is that the push rods are installed correctly. They are different lengths. GM recommends new lower intake bolts, and have updated the torque specs. On rocker arms and lower intake bolts. More Questions For… The intake and exhaust rocker / Pushrods are labeled in the picture below.