Just curious the amount of preload you set.
I just spoke to Crane Cams and they advised that I go 3/4 to 1 full turn past zero lash. Seems like a lot but I thought I'd ask.

Any thoughts?

 

I've run 1/4 turn on OEM type lifters with no problem.. assuming that's what the Crane's are.

Seen it run on OEM GM lifters and I run that on my Comp 850 lifters.

 

These are the linked anti-pump up lifter.
That's why I just can't imagine that 3/4 of a turn is going to work.
Seems like I would be putting myself in bent pushrod land.

 

Number one: I'd listen to Crane and if you don't believe them ask them why they recommend 3/4-1 full turn.

Number two: Not everyone finds 0 lash at the same point, so not every one adjusting to 1/4---or whatever---may in fact be at what they think they are.

I believe stock with OEM lifters is 1 full turn.

Unless your lifter calls for something other than stock, I have seen everything from 1/8 to 1 full turn (with 1/2 turn being the usual) and not many complaints or problems. Have seen no evidence of significant performance differences with different points of preset.

Many adjust with engine running, so I haven't a clue as to how they know with any certaintly how much of a preload they have set.

Personally, I would start with 1/2 with engine off and fine-adjust with engine running if too noisey (not to exceed that extra 1/2 turn). JMHO