redsilv

go buy a comp cam pushrod checker, it has a mark that you count
put the checker in the lifter and tighten the rocker arm to 22ft/lb
rotate that checker until you get zero lash and no movement from the
rocker arm
take the checker out and count the revolutions and add your preload

thats all in a nut shell
but i would bet something is definitely wrong with your pushrods in the video
keep us posted how you fixed it

mcdonald77

iTrader: (19)

just ordered the comp cams 7702-1. I used the other length checker last time where it has the jam nuts on it. Maybe I will have better luck with this. Right or wrong I am going to check it before I get that first drive in. I have only moved it twice and for a few minutes each time. Once I am sure on the valve train I can go put a load on it to set set the piston rings.

SC2150

You can also use this method: from zero lash, 1/4-1 turn of the pedestal bolt should put you within the .040-.080 spec. (1/4 turn is on the loose side and would be minimum preload). Or do it like most shops and guess and then tell the customer "that sewing machine noise is normal"......NOT! :thumbsup:

redsilv

i used the comp cams checker and still checked every
dang valve on the engine at least 1400000 times !! lol

but i gues i got it right because there is no lifter noise at all
in my engine. i got the hi tech pushrods and my 15 yr old
put them in and torqued the rockers at 22 ft/lbs. we also used
blue loctite just for my peace of mind

the comp cams valve spring compressor was cake too !

mcdonald77

iTrader: (19)

thanks for the responses!

mcdonald77

iTrader: (19)

Ok,

I got my comp cam tool today. check 2 cylinders. I made sure I was at tcd on the compression stroke using a straw in the spark plug hole and watching the valve springs while turning it over. Both intake and exhaust I got 9.24 turns down to 6.8, If my math is correct

6.8 smallest length of checker tool
9.25 x .050 = .4625

.4625 + 6.8 = 7.2625

7.2625 + .080 = 7.3425

I used 7.350 pushrods.


1.25 turns from 0 lash to 22 foot pounds

Atomic

iTrader: (42)

If you are using a length checker, you need to tighten the rocker down, then adjust the tool until you get zero lash. Then add the length of the tool to the preload you want.

mcdonald77

iTrader: (19)

Ive actually done it both ways, snug and torqued. I am thinking I am right around ball park. I will take some more inside video In a little while.

mcdonald77

iTrader: (19)

I was going on the maiden voyage, but my wideband decided to black out on me. Anyone have an NGK AFX stop displaying?

Atomic

iTrader: (42)

Yes, actually. Disconnect the power wire, wait a few seconds, and plug it back up.