Valve lash paper
Thread Starter
Racer
Joined: Apr 2006
Posts: 450
Likes: 0
From: Alexandria Va
Valve lash paper
I was reading the LARs' tech paper on adjusting lash but one of the figures has changed to a character. When you are 0 lash, how far do you turn the nut? Is it half a turn? Thanks
"Rotate, or “twirl,” the pushrod back and forth between your fingers and notice how lightly and easily it spins. As you do this, slowly tighten the rocker arm nut. The instant you feel the “twirl” friction change between your fingers, you are at “0” lash. STOP. Now, notice the position of your ratchet handle. Tighten the nut exactly � turn from your current position. Do the same to the other rocker arm for #1 (when doing this, make sure that the friction you feel as you swirl the pushrod is not caused by your ratchet and socket pushing or binding on the rocker arm – keep things straight and aligned, and watch for false indications caused by your tools)."
"Rotate, or “twirl,” the pushrod back and forth between your fingers and notice how lightly and easily it spins. As you do this, slowly tighten the rocker arm nut. The instant you feel the “twirl” friction change between your fingers, you are at “0” lash. STOP. Now, notice the position of your ratchet handle. Tighten the nut exactly � turn from your current position. Do the same to the other rocker arm for #1 (when doing this, make sure that the friction you feel as you swirl the pushrod is not caused by your ratchet and socket pushing or binding on the rocker arm – keep things straight and aligned, and watch for false indications caused by your tools)."
Pro
Joined: Oct 2006
Posts: 564
Likes: 0
From: London
Place the pushrod between you thumb and forefinger of your left hand (or right hand if you’re left handed…).
Rotate, or “twirl,” the pushrod back and forth between your fingers and notice how lightly and easily it spins. As
you do this, slowly tighten the rocker arm nut. The instant you feel the “twirl” friction change between your fingers,
you are at “0” lash. STOP. Now, notice the position of your ratchet handle. Tighten the nut exactly ½ turn from
your current position. Do the same to the other rocker arm for #1 (when doing this, make sure that the friction you
feel as you swirl the pushrod is not caused by your ratchet and socket pushing or binding on the rocker arm – keep
things straight and aligned, and watch for false indications caused by your tools). That’s it for #1.
Rotate, or “twirl,” the pushrod back and forth between your fingers and notice how lightly and easily it spins. As
you do this, slowly tighten the rocker arm nut. The instant you feel the “twirl” friction change between your fingers,
you are at “0” lash. STOP. Now, notice the position of your ratchet handle. Tighten the nut exactly ½ turn from
your current position. Do the same to the other rocker arm for #1 (when doing this, make sure that the friction you
feel as you swirl the pushrod is not caused by your ratchet and socket pushing or binding on the rocker arm – keep
things straight and aligned, and watch for false indications caused by your tools). That’s it for #1.
