Explain to me again, please

[SSDiv6]

Originally Posted by Jeff Stout

Just talking about valve train today at shop. What was done to control valve train when using a Spintron?
Pushrod deflection, particular valve sping pressure ect.

Jeff,
Valvetrain behavior is affected mainly by the dynamics of the camshaft lobe and rocker arm and pushrod deflection. As a result, Spintron testing has helped with the reduction of spring pressures, the use of stiffer pushrods and many have switched from aluminum rockers arms to CNC machined/profiled steel rocker arms with Jesel shaft rockers. Like my friend Robin Wright says, the key is to control a "pissed off" valvetrain.