Spring Pressures. Solid roller lifter on a hyd roller cam.

dart19666 said

These are not opinions these are facts straight from our Spinton and dyno info from 50+ years of testing. We "Crower" have tested many different cam profiles from our catalog and other manufactures, the end result is you WILL do more damage with less spring pressure than you will ever do with the minimums I listed above.

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I agree, you damage more with less and the kind that sneaks up.... Spring pads dug in, valves/seats hammered, bent pushrods...then bending/breaking valves.
With too much...all you do is destroy lobes,wheels, rockers...send metal everywhere. It's all bad to various degrees.
Imo That statment swings both ways.

You need the psi you state when the lobes are aggressive. If you take a slightly tweaked 'hyd roller grind' for a solid roller lifter..m then you need less psi. Generally speaking with your product..you're correct. Not debating the research your company has done and its findings with what it tested. It just really depends on the grind and you cant deny that .