Valve Lash Adjustment
One of the most important things that people seem to screw up is valve lash adjustment. Its required on all aftermarket ajustable rockers. Here is a few ideas on how to do it right.
The only method to adjust valves properly is as follows
1 Turn the motor over till the exhaust valve just starts to open.
2 Adjust the intake valve on that cylinder
3 Turn the motor over till the intake valve starts to close
4 Adjust the exhaust valve
This will work on any motor and any cam.
An easy way to tell if a cylinder is at TDC of the compression stroke is to watch that cylinder's valves as the engine is cranked or rotated. If the valves remain closed (the rockers don't move) as the piston approaches the top of it's travel, that piston is on its compression stroke (the closed valves were allowing compression to build). If instead, a valve opens as the piston travels upward (releasing compression in that cylinder) then that piston is on its exhaust stroke.
Intresting info here:
5. The following valves can be checked with the engine in position No. 1, with the No. 1 piston at TDC on the compression stroke:
· No. 1 intake and No. 1 exhaust
· No. 4 intake and No. 3 exhaust
· No. 8 intake and No. 7 exhaust
6. Rotate the engine 360° (1 full revolution) from the 1st position (No. 1 is now on its exhaust stroke) and check the following valves:
· No. 3 intake and No. 2 exhaust
· No. 7 intake and No. 6 exhaust
7. Rotate the engine 90° (1/4 revolution) from the 2nd position and check the following valves:
· No. 2 intake and No. 4 exhaust
· No. 5 intake and No. 5 exhaust
· No. 6 intake and No. 8 exhaust