67coupe
Founding Member
Everything sounds fine with the cam timing. I'm mainly concerned with dizzy timing and the adjustment of the valves.
I think you understand how to fix the dizzy timing. I'm also starting to think you might have some valves slightly open by the sound of how the rockers were installed.
You should adjust valves in firing order as this follows the cam. 1-3-7-2-6-5-4-8
1) Make sure valve to be adjusted is on the base circle of the cam. Rotate the engine in its normal direction of rotation (clockwise) and watch the exhaust valve on that particular cylinder. When the exhaust valve begins to open, stop and adjust that cylinder's intake rocker arm.
2) Install rocker and HAND tighten bolt.
3) Set torque wrench to 18 lb-ft. With torque wrench starting at the 12:00 position, tighten the rocker bolt.
4)
A - If you reach torque before 90* of rotation, remove shims until torque is reached between 90* and 1 full turn.
B - If you reach torque between 90* of rotation and 1 full turn. This rocker is adjusted correctly.
C - If you do not reach torque prior to 1 full turn, add shims until torque is reached between 90* and 1 full turn.
5) Continue to turn the engine, watching that same intake valve/rocker you just set. It will go to full open and then begin to close. When it is almost closed, stop and adjust the exhaust rocker arm on that particular cylinder. Loosen the exhaust rocker arm and follow the same procedure described before in steps 2 thru 4 to adjust this rocker arm.
6) Both valves on this cylinder are now adjusted, and you can move on to your next cylinder and follow the same procedure again.
There may be some initial valvetrain noise when the engine is first fired up but once oil pressure has stabilized and the engine heats up, it should quiet right down to a normal level.
I think you understand how to fix the dizzy timing. I'm also starting to think you might have some valves slightly open by the sound of how the rockers were installed.
You should adjust valves in firing order as this follows the cam. 1-3-7-2-6-5-4-8
1) Make sure valve to be adjusted is on the base circle of the cam. Rotate the engine in its normal direction of rotation (clockwise) and watch the exhaust valve on that particular cylinder. When the exhaust valve begins to open, stop and adjust that cylinder's intake rocker arm.
2) Install rocker and HAND tighten bolt.
3) Set torque wrench to 18 lb-ft. With torque wrench starting at the 12:00 position, tighten the rocker bolt.
4)
A - If you reach torque before 90* of rotation, remove shims until torque is reached between 90* and 1 full turn.
B - If you reach torque between 90* of rotation and 1 full turn. This rocker is adjusted correctly.
C - If you do not reach torque prior to 1 full turn, add shims until torque is reached between 90* and 1 full turn.
5) Continue to turn the engine, watching that same intake valve/rocker you just set. It will go to full open and then begin to close. When it is almost closed, stop and adjust the exhaust rocker arm on that particular cylinder. Loosen the exhaust rocker arm and follow the same procedure described before in steps 2 thru 4 to adjust this rocker arm.
6) Both valves on this cylinder are now adjusted, and you can move on to your next cylinder and follow the same procedure again.
There may be some initial valvetrain noise when the engine is first fired up but once oil pressure has stabilized and the engine heats up, it should quiet right down to a normal level.