setting lash

[TONYT]

seems i'm full of questions 2day

looking at the diff. ways that you guys and gals set the rocker arm lash on ur cars.

last time i tried the method of from tdc setting cetain ones then rotating twice more to do the rest. did'nt like that one.

what other procedure is out there

thanx for ur sug. in advance

[03z06vette]

solid or hyd lifters?

[TONYT]

my bad hyd roller

[03z06vette]

at TDC 0 lash and then a 1\4 turn..

[Gearhead]

Here, this will help, not the best instructions, but relatively accurate. Need to do each cylinder at a time:

Adjusting Hydraulic Lifters for Proper Preload
In order to adjust the preload the lifter must be properly located on the base circle or “Heel” of the cam lobe. At this position the valve is closed and
there is no lift taking place.You will need to watch the movement of the valves or lifters to determine which lifter is properly positioned for adjusting.
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. (Why? Because when the exhaust valve is just beginning to
open, the intake lifter will be on the base circle of the lobe, the correct position for adjusting the intake.)
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. (If you are installing brand new lifters they will be in the neutral position when they come in the box.)
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. (Again, when we see the intake almost closed, we are sure that
exhaust lifter is on the base circle of the lobe.) 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.

[CNTLOSE]

at TDC 0 lash and then a 1\4 turn..

This is the way I do it too. :bigthumb

[Goober]

Don't spin the push rod to find zero lash, you can spin it while it has tension (preload). Move the push rod up and down until all the slack is taken out. THIS is zero lash with no lifter preload.

[Kevin1989]

at TDC 0 lash and then a 1\4 turn..

:bigthumb how i put mine on.