Setting valve lash with new, non filled hydraulic roller lifters

TT5.9mag said

Respectfully disagree with part of your statement. The 0-1/4 turn part. If you run a factory hydraulic lifter with just spring clips at zero preload you’ll beat the clips out of em. Maybe with circlips they’ll last at zero but I’ve never tried. 020-030 preload is where they should be IMO.

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You could be right with the chinese junk they are selling today. I ran all my engines with hydraulics at zero - 1/4 turn down as was described to do in the Direct connection engine manual. I never had a lifter failure. In today's world I would not consider a hydraulic lifter in any performance engine.