Re: Lifter rule in Stock
 

I agree with the above. ^^

If that was NHRA's intent then the revision should have come out and stated that hyd. flat tappet lifters can be replaced with solids.

Re: Lifter rule in Stock
 

I know this should be obvious, but if your combination already uses hydraulic roller lifters you can convert to solid rollers now?

Re: Lifter rule in Stock
 

It seems to me that going from a heavy hydraulic roller to a (fairly) light race-type solid roller should do wonders for the RPM potential of a bunch of modern Stockers!

Re: Lifter rule in Stock
 

Seems to me that after a lot of good intelligent questions have surfaced and been discussed, a rule clarification will probably be forthcoming. Yes, Billy, the solid roller lifter comment is a real good probability that RPM's might possibly be affected for good. I know that a mechanical lifter camshaft has clearance ramps included on each end of the lobe configuration to allow for lash, and that the overall lift also compensates for valve train lash. If you tried a set of mechanical lifters on your existent hydraulic cam, what would you use for lash on an initial effort before replacing the cam?We're talking going to a test and tune,not some kind of national event.

Re: Lifter rule in Stock
 

Holy Super Stock Batman !!!

Stockers with SOLIDS !:eek:

D

Re: Lifter rule in Stock
 

One step closer to SS for sure Dan ;)

Re: Lifter rule in Stock
 

A cottage industry of high tech, high dollar stocker hydraulic lifters is made obsolete overnight by the stroke of a pen...

Re: Lifter rule in Stock
 

If they are going to clarify the rules...what about the diameter?:eek:

Re: Lifter rule in Stock
 

been using solid lifters on hydraulic cam grinds for years in street cars adjust the lash at.006".

Re: Lifter rule in Stock
 

I assume that would have to be at or near operating temperature. Also, how much would you gain over these "Limited Travel" lifters?