Insufficient Hardness of New Lifters & Cams

[Shoebox]

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[QUOTE=Kube;2359499]

Originally Posted by Shoebox

Talking with my machinist while dropping off a block recently, and he mentioned issues he's had with some NEW cams and lifters having insufficient Rockwell hardness, said it seemed to begin 3-4 years ago. I've read here on the Barn about adjustable lifters from some sources being "soft" and a couple years ago one our own cam gurus here recommended I not get a cam on a new billet due to inconsistent heat treating.


Wondering what you guys have experienced, opinions, etc?


I'm not about to buy a cam right now, but would one be hesitant to purchase new, safer with reground on good core? Appreciate any input.
















Started a long time ago, maybe twenty years ago or so. I got a set of Johnson adjustable tappets from Red's and a number of them were dead soft.
I would strongly urge you to have them professionally checked. Be certain to check them on the side, NOT the tappet face. And be sure to stone away the raised material from the checking process.
If memory serves, I used the N scale.

I was hoping PETE might way in on this issue too.