Depends, is there a commercial available valvetrain setup that would live as expected ? What are the recommendations made for component selection for the lobes ?CamKing wrote: ↑Tue Sep 03, 2019 2:36 pmBecause if someone has it measured, and it's not what Comp said it is, it's Comp's fault. If it matches the specs, and beats the hell out of the valvetrain,novadude wrote: ↑Tue Sep 03, 2019 2:12 pmWonder why they don't just play games with the advertised numbers instead of sticking to the industry standard of 0.006" for adv duration? Since everyone that reads the magazines wants short advertised duration for a given 0.050" duration, why not just design lobes that work and published advertised numbers measured at 0.009" or something? I think Isky does something like this.
Maybe it's the lifters? Maybe it's the rockers? Maybe it's the pushrods? Maybe it's the lifter bores? maybe it's the lifter bore clearances? Maybe it's the oil? Maybe it's the valves? maybe it's the valve seat? Maybe the engine builder should have known it was to aggressive for his application?
It's called "Plausible Deniability"
General engine tech -- Drag Racing to Circle Track
That's what I was thinking when I listened to it.
Can you imagine if that small block Mopar had sheet metal valve covers instead of those thick cast aluminum ones? I don't think I've ever heard even a solid lifter setup sound that loud.
Thanks for the clarification, fellas.CamKing wrote: ↑Tue Sep 03, 2019 1:09 pmCorrect. The plunger is getting hammer also, but that's not what you hear. The issue is the valve hitting the seat, and the rocker hitting the valve tip.
Now, when the plunger is getting hammered, and collapsing, it can actually increase the velocity/acceleration rate at which the valve is leaving and hitting the seat.
He who is in me is greater than he who is in the world.