Thread: valve adjustment

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Originally Posted by DennyW

((I've read tighen down on the rocker while rotating the push rod until there there is slight resistance and then go about 1/2 a turn more.)) That way is fine, but I like to feel the play by feeling the gap between the rocker and the valve. The reason is just what you have said ((Not sure if I can discribe this right but if you can push down on the push rod and there is a little spring back do you adjust down until the spring back is gone and then go another 1/2 turn?)) That is because your lifters are not pumped up with oil, and a mistake is about to happen. That springy part is just that. Zero lash means without compressing the the lifter at all. This is hard to feel by spinning the pushrod.

I like to take 2 fingers with one hand, and move the rocker up and down to feel the gap, click of the rocker, until I get all the play out. That is zero lash.

ps: What Jack said above.....

i done it dennys way to and i done it like Jacks way a bit of both i know guys that will go a full turn i do not. on any engine with out a non-adjustable valve train that i mill the heads block valve job cam re grind or re arc the rocker arms or thicker head gaskets. i do with intake off and a wire feeler gage between the clip in the lifter and the push rod cup if to much i shim the rocker stands or use adustable push rod or make the valve train adjustable. i take alot of time doing this do not rush thru setting valves . i always mark the rocker after the lash is set with a marker so if you walk away or the phone rings and go back you know were you left off i find the older i get the more i do this i mark every thing.. i have walk around the shop looking for wrench only to find it is in my hand