Ok...I just read something in American Iron that threw me...I understood the directions that came with my screaming eagle pushrods this way:
1. lengthen the pushrod till it comes into contact with lifter...making it snug laterally but able to spin...This I understood to be "Zero Lash".
2. Next, from previous point, turn out (lengthen) 2 and 1/2 full turns to preload lifter.
The directions I just read for S&S adjustable pushrods made it sound like this:
1. Lengthen the pushrod until valve is held open (putting pressure on piston in lifter) until it bleeds down completely and can NOT be turned with fingers after bleed down.
2. Shorten pushrod till valve closes and rod spins.
3. Some builders choose to slacken up (shorten) rod another turn to allow lifters more pump.
I'm redoing cams this week and better do this right...this time around if I hadn't done it right last year.
Please set me straight either way
1. lengthen the pushrod till it comes into contact with lifter...making it snug laterally but able to spin...This I understood to be "Zero Lash".
2. Next, from previous point, turn out (lengthen) 2 and 1/2 full turns to preload lifter.
The directions I just read for S&S adjustable pushrods made it sound like this:
1. Lengthen the pushrod until valve is held open (putting pressure on piston in lifter) until it bleeds down completely and can NOT be turned with fingers after bleed down.
2. Shorten pushrod till valve closes and rod spins.
3. Some builders choose to slacken up (shorten) rod another turn to allow lifters more pump.
I'm redoing cams this week and better do this right...this time around if I hadn't done it right last year.
Please set me straight either way