Shimming Hydraulic Flat Tappet Lifters

[Alan Nyhus]

Originally Posted by ss3011

Converting from a hydraulic lifter to a solid sounds good , but how does that work ? Wouldn't you have to develop a new camshaft ?

It depends on the lobe, of course. The acceleration ramps are theoretically different on a hydraulic vs. a solid profile. Many lobes will accept either style lifter with no issues.

Originally Posted by ss3011

Wouldn't you lose some lift due to whatever valve lash you use ?

Yes, you do. Since the lash isn't figured into the checking clearance (zero) a solid lifter combo is in the same boat already. On a 'hydraulic cam' that's been switched to solid lifters, .002-.003 lash (hot) is pretty normal.

Originally Posted by ss3011

Are there some stocker profiles out there that are solid but are designed for very tight lash , say under .012" . Just asking , I am interested !

Most solid lifter stocker cams that I'm around use lash figures in that neighborhood already.

Hope this helps. -Al