Flat tappet lifters

[Glenn Briglio]

Originally Posted by Alan Roehrich

We're not using DLC coated lifters, we may try them in the future.

The guy to talk to at Comp is Dave McCarver. The new finish is one actually developed for the LSx series roller cams. However, the idea behind it is to provide the smoothest possible surface, so that more of the roller contacts more of the lobe. The gain for a flat tappet application is that the breaking is pretty much a process of burnishing and polishing. So the more polished a surface is to start with, the easier it is to finish the break in.

Realize that DLC is just like the foot on a Schubeck in that it absolutely does not tolerate impact or abrasives. That's the reason DLC does not work on cast iron, cast iron is a really nasty abrasive.

Can a cast iron camshaft be dlc coated?