CLASS RACER FORUM - Lifters In Stock Eliminator

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Re: Lifters In Stock Eliminator

Built a 350 Chevy for a hobby stock dirt car. He insisted the hole in lifter face was the way to go. I said that its not a great idea. 2 Cam lobes and 2 lifters were worn out. It took the center of the lifters and put major cups in face with the .015 hole opened to around .080 hole size.
Anyone take their lifters and cams and get frozen. Works great on valve springs and brake rotors.

Re: Lifters In Stock Eliminator

Quote:

Originally Posted by pmrphil (Post 707745)

But then again, John, if the lifters don't rotate, most likely the cam was ground incorrectly, probably not enough (or too much) taper on the lobe.
Luckily Mopars have a larger diameter lifter, that's a plus.;)

However, often it is the crappy quality or metallurgy of the new Chinese lifters
or sloppy machining that causes them not to rotate. Flat tappet
lifters are also not flat either (At least to start with hopefully)

Re: Lifters In Stock Eliminator

Maybe this will help someone. Daniel Powell is a pretty sharp guy.

https://youtu.be/k_ExoIuTpks

Re: Lifters In Stock Eliminator

Hey People .I am going to give you the best solution that all of us have
in a post later today. And hopefully you can use this untill there is a rule change. i will clear this with Ken again before posting. But i can hardly keep up after PRI. So be patient those of you who know me. We are not well known YET ,so i am concerned we cant deliver quickly. Cam and lifters are now a small part of our business.Thanks Rocky

Re: Lifters In Stock Eliminator

FWIW......

We never lost a Shubeck without there being a reason outside the lifter itself. Of course, I treated them like they were the finest crystal. And I was obsessed with valvetrain control and maintenance. Honestly, if I could get someone worth a damn to make them, I'd use them.

We did have a rather ugly incident with PPPC, and I refuse to use their products. A member here had an engine utterly destroyed, was intentionally deceived, and seriously mistreated.

I have used and sold Trend for over a decade, zero failures, zero complaints. Well, other than price and delivery delays.

I won't use DLC coated lifters. And they won't work with cast cam cores, or certain oils. Talk to the people who make and apply the coatings, not the people who sell parts.

The cam companies don't want to make flat tappet cams anymore. CWC really does not want to cast cores, because there's no volume. Steel cores and flat tappets are an entirely different deal, and require different practices. The sole reason you were able to buy cast core cams is because the OE's and some parts suppliers were buying 10,000 at a time, 2-3 times a year.

There are a ton of terrible flat tappets out there, and an extremely limited number of high quality flat tappets.

Johnson HiLyft makes some really nice stuff, they have some lifters that are 60+ Rockwell C, ground, not polished to an exceptional finish, and they're available with the EDM oil hole done BEFORE the finish grind is done on the face.

People are careless with lifter bore location and size. It causes flat and roller lifter failures.

People think that they're chemical engineers, and they're going to make their own race oil. They're killing their engines.

Converting everyone to roller lifters will require a massive number of entirely new lobe designs. The vast majority of cam companies don't even have a lobe designer anymore, they don't want one, and they don't want to design a lobe, or ten, for you, the three cam a decade customer.

It's not a simple rule change. And if you let that genie out of that bottle, you'll never get it back in. And the genie won't care what it destroys.

Re: Lifters In Stock Eliminator

You want roller lifters in stock?
The class is called Super Stock
Buy a quality tool steel lifter end of story
Gump what lifter was used and what oil ?

Re: Lifters In Stock Eliminator

Quote:

Originally Posted by James Perrone (Post 707770)

You want roller lifters in stock?

I think that I made it very clear that I do not currently have a dog in this hunt. So, no, I am not advocating for change.

Quote:

Buy a quality tool steel lifter end of story

I always like the opportunity to learn something. I am glad that this thread has so much good input.

Re: Lifters In Stock Eliminator

[QUOTE=Alan Roehrich;707769]FWIW......

We never lost a Shubeck without there being a reason outside the lifter itself. Of course, I treated them like they were the finest crystal. And I was obsessed with valvetrain control and maintenance. Honestly, if I could get someone worth a damn to make them, I'd use them.

I've run the same set of Shubecks since I put the car together 12 years ago and they don't look any different than when I installed them. When I picked them up in Shubeck's shop, he did tell me to run enough spring pressure to keep them on the lobe so I've always run more spring pressure than I probably needed to.
As a hydraulic lifter there is not much room for a thick carbide puck on the bottom of the lifter but with a solid lifter there wouldn't be the same restrictions I have to wonder if a less fragile version of them could be developed now that we are allowed to run solid lifters in stock.