Should the feeler guage be tight under the tip? When the adjustment gets close, 1/16 of a turn will make it so the feeler guage will not move side to side but will pull straight out easily. Do you want the feeler to be able to move side to side or is the lash to loose @ that gap?
Phil

 

i always tightened mine where i could feel friction pulling in & out,i didn't attempt side to side.sometimes i will run the valves and then take a gauge that is .002 thousandths thicker and see if it will go in.be sure to double ckeck ! after you get her running are you going to vary the lash to see where you get max hp/tq ?

 

when i adjust lash i usually just want to feel a slight drag on the feeler gauge when i pull it straight out, thats what i was taught.

 

You should feel the resistance going in and out. If you can go side to side then it is too loose. The old days without roller rockers you could do side to side but with roller rocker, you want to check it the same direction as the rollers roll.

It should be snug but not tight on the feeler. You should feel resistance but not to the point where you really have to yank it.

 

You only need to be concerned with the lash when moving parrallel with the roller. There should be a slight drag on the feeler gauge as you pull/push it while turning the allen head. It's a feel thing. Once you do two or three holes you'll get the feel for it.

 

Thats true with so many things isnt it

 

Using a tapered go/no-go feeler gauge works best for me. It is very clear when it is too big (goes past the taper) or too small (won't go in).