1. Remove the valve covers, and pick a cylinder you are going to set the preload on.
2. Hand rotate the engine in its normal direction of rotation 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.
3. Back off the intake rocker arm adjuster and remove any tension from the pushrod. Wait a minute or two for that hydraulic lifter to return to a neutral position. The spring inside the lifter will move the pushrod seat up against the retaining lock if you give it time to do so.
4. Now spin the intake pushrod with your fingers while tightening down the rocker arm. When you feel a slight resistance to the turning of the pushrod, you are at "Zero Lash". Turn the adjusting nut down one half to one full turn from that point. Lock the adjuster into position. The intake is now adjusted properly.
5. Continue to hand turn the engine, watching that same intake. 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 3 and 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.
__________________
Death is my art and I'm about to paint my masterpiece.
Correct! Intake starting to close adjust exhaust. Exhaust starting to open, adjust intake. I usually go around a 1/4-1/2 turn past zero lash. The more preload you put on the lifter, the more chance of pumping up the lifters and having valve float problems. Going with less preload allows the engine to rev a little bit higher too.
__________________
337 C.I.D.
390 R.W.H.P.
362 R.W.T.Q
11.44@120 in the 1/4
7.35@ 95 in the 1/8
1.60-60'
N.A.
1988 L.X. Hatch 5.0L 5-Speed, 85,000 original miles
Same process except you'd use a feeler guage to set lash between rocker & valve. Generally .010-.018 set hot will get ya close if you don't have cam mfr. spec.
__________________
Death is my art and I'm about to paint my masterpiece.
337 C.I.D.
390 R.W.H.P.
362 R.W.T.Q
11.44@120 in the 1/4
7.35@ 95 in the 1/8
1.60-60'
N.A.
1988 L.X. Hatch 5.0L 5-Speed, 85,000 original miles
