WW7

Well, I finally found the adjustment specs on the lifters that I have...Crane had it hidden in their instructions on their website... It says to adjust the preload from .060 to .090 preload on "all" their lifters...This would be about (1 1/4) turns for the .060 and about (1 7/8 ) turns for the .090..This is taking into account that each full turn on my 7/16 studs equals ( .050) ....So it appears the Tech guy at Crane knew what he was talking about..Evidently the Crane lifters require much more adjustment then we are use to...It's hard to believe that the 1 1/2 turn (.075) adjustment the tech told me to use is actually conservative according to their instructions.Look near the end of the instructions under Dyno Proven Information for the specs..This proves to me that we should always get the manufactors specs on whatever products we install in our cars... ..Below are the instructions for the lifters....WW

http://www.cranecams.com/uploads/instructions/568e_.pdf
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C4vettrn

I tried using the old style of adjusting by sound on my roller rockers and found it was a lot harder to find the correct sounds than it was with the stamped steel rocker arms.

mtwoolford

Installed an Edlebrock cam and lifters in a ford big block; specs called for an 0.080 lifter preload

Tom400CFI

Probably a good practice to set them all the same, but not critical. As long as the lifter doesn't top out, or bottom out, it will function fine.

Setting the lifter prelaos has no bearing on "rev limits" of valve float.


ddahlgren is right: Changing lifter design or thread pitch changes the correct setting. If you know your lifter plunger travel, and your thread pitch, you can determine how many turns are required to put your plunger in the middle, or skewed to which ever side your "racer buddy" told you works better.

cadmaniac

Make sure you don't have your rocker arms upside down...

Sounds funny, but I had some valve train noise after I installed my lt4 HotCam. Pulled the rocker nuts off and noticed about half of them were installed with the round side up toward the adjusting nut. Pulled the rocker off and spun the bearing around till the flat side was up, and Voila! quiet valvetrain!

Hate to admit I did something so absent minded (dumb), but we all make mistakes (I hope).

I adjusted the rockers to 3/4 turn after lash, by the way. All is well.

WW7

Well, I just finished readjusting my lifters from the (1 full turn) (.050) I had them at, to (1 1/2 turns) or ( .075) that Crane suggests... There is a definite reduction in noise...It went from a loud sewing machine sound , to a fairly quiet sewing machine sound..I guess it pays to read instructions........WW

Joe C

some interesting reading -

http://www.enginebuildermag.com/2012...d-lifters-101/