Schubeck lifters

Gregg Luneack · 10-18-2015, 12:26 PM

I ask NHRA to make roller lifters an option 3 years ago, no response.
Just the cost and availability makes it a no brainer. Maybe if more
racers send emails something will happen.

Billy Nees · 10-18-2015, 01:03 PM

Quote:

Originally Posted by Gregg Luneack

Just the cost and availability makes it a no brainer.

Not if I know Drag Racers! Next you'll see more wiped and broken cams, valve and valvetrain and spring failures. Availability maybe. Cost? Bull.

Rick Leininger Jr. · 10-18-2015, 01:09 PM

If the ceramic foot lifter always stays in contact with the cam the lobe, then the ceramic foot is a lot less likely to shatter. Issue (as far as I'm concerned) is that the optimal performing stocker camshaft will incorporate some amount of loft (cam/lifter separation for increased dynamic lift) incorporated into the design, therefore I'd only consider a steel/DLC coated flat lifter for a stocker application. Some of you may even be lofting and don't know it, or might find out when you have a failure.

In addition to the Precision steel lifters mentioned, I've used the Ferrea lightweight steel SBC flat lifters with the foots polished, successfully in a 8200 rpm SBC on a nitrided cam core.

10-18-2015, 12:26 PM	#1
Gregg Luneack Member Join Date: Jan 2004 Posts: 202 Likes: 9 Liked 225 Times in 30 Posts	Re: Schubeck lifters I ask NHRA to make roller lifters an option 3 years ago, no response. Just the cost and availability makes it a no brainer. Maybe if more racers send emails something will happen.

10-18-2015, 01:09 PM	#3
Rick Leininger Jr. Member Join Date: Jun 2007 Posts: 162 Likes: 0 Liked 0 Times in 0 Posts	Re: Schubeck lifters If the ceramic foot lifter always stays in contact with the cam the lobe, then the ceramic foot is a lot less likely to shatter. Issue (as far as I'm concerned) is that the optimal performing stocker camshaft will incorporate some amount of loft (cam/lifter separation for increased dynamic lift) incorporated into the design, therefore I'd only consider a steel/DLC coated flat lifter for a stocker application. Some of you may even be lofting and don't know it, or might find out when you have a failure. In addition to the Precision steel lifters mentioned, I've used the Ferrea lightweight steel SBC flat lifters with the foots polished, successfully in a 8200 rpm SBC on a nitrided cam core.