Help me understand what I'm missing?
help me understand what step I might be missing. In another thread New rebuild....but tic..tic...tic
I explain my new build with all new valvetrain. I measure valve lash w/rockers at:
Intake Exhaust
#2(0) #8(0)
#1(.003) #4(0)
#8(.003) #3(.017)
#4(.006) #6(.043)
#3(0) #5(0)
#6(0) #7(.011)
#5(.012) #2(.014)
#7(0) #1(0)
so I measure valve stem height and add spring shim and oddly enough, my taller valvestems also have the biggest valve lash gap?? Seems opposite of what it should be??
When I measured lash, I bumped motor until no movement on that rocker to be sure its on basecircle. Rotating 90 deg and measureing was not putting next valve on base circle,
I presume due to custom performance cam (whiplash).
So I have .032” spread from on valvestems and anywhere from zero lash to .043 gap at rocker. Preload should be .080-.085.
IF I go with a .075” longer pushroad, preload would range from .032 to .075.
Is there anyway around this other than adjustable roller rockers to take up the slack?
I’m going to re-check again (Vernier depth gauge) the stem heights as I did vary by .020-.030 with my measurements when rechecking each measurement.
help me understand what step I might be missing. In another thread New rebuild....but tic..tic...tic
I explain my new build with all new valvetrain. I measure valve lash w/rockers at:
Intake Exhaust
#2(0) #8(0)
#1(.003) #4(0)
#8(.003) #3(.017)
#4(.006) #6(.043)
#3(0) #5(0)
#6(0) #7(.011)
#5(.012) #2(.014)
#7(0) #1(0)
so I measure valve stem height and add spring shim and oddly enough, my taller valvestems also have the biggest valve lash gap?? Seems opposite of what it should be??
When I measured lash, I bumped motor until no movement on that rocker to be sure its on basecircle. Rotating 90 deg and measureing was not putting next valve on base circle,
I presume due to custom performance cam (whiplash).
So I have .032” spread from on valvestems and anywhere from zero lash to .043 gap at rocker. Preload should be .080-.085.
IF I go with a .075” longer pushroad, preload would range from .032 to .075.
Is there anyway around this other than adjustable roller rockers to take up the slack?
I’m going to re-check again (Vernier depth gauge) the stem heights as I did vary by .020-.030 with my measurements when rechecking each measurement.