Insufficient Hardness of New Lifters & Cams

[Shoebox]

[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.

[KiWinUS]

[QUOTE=Shoebox;2359977]

Originally Posted by Kube

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

Unfortunately Pete was kicked off here for some reason. Too bad a very knowledgeable guy.

[Shoebox]

[QUOTE=KiWinUS;2359978]

Originally Posted by Shoebox

Unfortunately Pete was kicked off here for some reason. Too bad a very knowledgeable guy.

Very Knowledgeable indeed. Having helped so many folks, myself included, I find that really sad.

[Tim Ayers]

[QUOTE=Shoebox;2360406]

Originally Posted by KiWinUS

Very Knowledgeable indeed. Having helped so many folks, myself included, I find that really sad.

Bummer for sure. Pete forgot more knowledge that most of will ever learn. That said, rules are rules and Ryan has final say.

[Kube]

[QUOTE=Tim Ayers;2360539]

Originally Posted by Shoebox

Bummer for sure. Pete forgot more knowledge that most of will ever learn. That said, rules are rules and Ryan has final say.

Pete who? Seriously.