Lifter ? sbc Hydraulic/stocker

[BlueOval Ralph]

DO NOT USE any thing with MOLY in it when you have DLC coatings it (moly) will attack the DLC.

Originally Posted by Alan Roehrich

The Comp high end hydraulic lifter is okay if you're on a budget. Nitriding the cam helps, it's well worth the investment, especially on a cast core. Trend is supposed to be working on a short travel tool steel hydraulic. Performance Research Inc had one in the works as well. The tool steel lifters are not as expensive as the Smith's.

DO NOT use DLC coated lifters on a cast core camshaft. EVER.

Yes, you need to remove your inner spring for break in. Your open pressure needs to be below 300 for break in, 250 or so is better. A good 50W mineral based oil, with GM EOS additive, and careful break in is a necessity. I use a premium moly paste on the cam and lifters, and as an assembly oil, I use a mixture of Brad Penn 50W, with GM EOS, and the Comp red lube, if you need to to really stick for a while, during storage, you can mix in STP, but you have to really mix the stuff real well, or it does not work. That stuff really sticks to bearings, cams, and lifters. Just do not ever put it on rings, cylinder walls, or piston skirts.

If you are going to run high spring pressures without using the Smith's (Shubeck) style lifter, then you need to keep your idling time to a bare minimum, and keep your idle above 1200 RPM. You're not going to be able to run the real thin modern race oils either, you'll need to be running the 10W/40 at least, if not 20W/50, the thin stuff simply does not generate the hydrodynamic oil film the budget lifters require to survive. At that point, grooving the lifter bores to feed oil directly to the cam and the edge of the lifter is probably necessary.

[Alan Roehrich]

Originally Posted by BlueOval Ralph

DO NOT USE any thing with MOLY in it when you have DLC coatings it (moly) will attack the DLC.

Interesting, since the vast majority of racing oils now contain a fair amount of molydisulfide additives.

I have had various DLC coating applicators tell me not to use certain motor oils, but they've never said anything about moly disulfide in the oil, and have in fact suggested oils with a fair amount of moly disulfide in them.


That's certainly a subject that requires a lot more investigation. I look at DLC coating as being problematic, at best, it often appears to create almost as many problems as it seems to solve.

[BlueOval Ralph]

You have a PM

Originally Posted by Alan Roehrich

Interesting, since the vast majority of racing oils now contain a fair amount of molydisulfide additives.

I have had various DLC coating applicators tell me not to use certain motor oils, but they've never said anything about moly disulfide in the oil, and have in fact suggested oils with a fair amount of moly disulfide in them.


That's certainly a subject that requires a lot more investigation. I look at DLC coating as being problematic, at best, it often appears to create almost as many problems as it seems to solve.

[Glenn Briglio]

Why is everybody trying to reinvent the wheel? Do the Smith lifters work? Yes they do and for the price of a new engine it's cheap insurance.

[ron mattson]

Do Smith lifters work? yes they do, and they also fail occasionally and when they do
it costs you a new engine. The ceramic puck is like grinding compound when they
fail and break apart. It may not even be the lifters fault, you could break a rocker and
start the process, all i know is it costs a lot when it happens.

[Bob Mulry]

This is just an exercise in futility............

I see on another post from Greg Hill that he has the inside scoop from Comp Cams that roller rockers will be legal next year...........

If that happens how far behind are roller lifters?????????????

The next step will be to remove the Stock Eliminator section from the NHRA Rule Book

Let me recap the events that killed Stock Eliminator.....

Removal of the OEM spring pressure & size rule

Removal of the cam duration rule & cams designed with lift rates to take advantage of the above change

Lifters designed to take advantage of the above

Roller rockers to take advantage of the above rule

How can roller lifters not be the next rule to take advantage of the above rule changes???

The last Stock rule change will be an additional S to make it SS

[danny waters sr]

Boy !
I must have the stockest stocker out there cause i ain't got none of all these goodies.
Just plain ole ..Old school....No wonder my s@#t don't run...

[Dean Feiock]

Originally Posted by ron mattson

It may not even be the lifters fault, you could break a rocker and start the process, all i know is it costs a lot when it happens.

Ron, I guess broken rockers will be a thing of the past.........

[Alan Roehrich]

Yeah, next up, broken rocker studs .................................