[cbatters]

Originally Posted by skunkworks

here is my thought - your lifters never run fully extended. Then - when you removed the rockers the lifters fully extended. Maybe there is dirt/varnish/sludge in that range of the lifter that made them stick all the way out.

Or maybe they are wore funny so that they stuck fully extended.

Other than that I don't know. Odd though either way

How many did you get done? Both heads or just the front?

sam

I spent most of the time screwing around with the dropped valve. I did 2 of the three cylinders up front and I will do the last cylinder tonight. (Second cylinder only took ~10-15 minutes to install VSS but that is when I discovered the lack of comrpession.

STICKY LIFTER
I agree with your hypothesis. This is the first time the lifter has been fully extended in 11 years and could have some ridge/varnish that was preventing it from being compressing. Wasn't sure if there was some sort of valve in the lifter that allowed it to extend quickly but retract slowly.

Surprised that this problem has not been posted before - if not caught, it could cause a valve to burn by keeping them partially open. (Maybe no one replaces VSS without also upgrading lifters.)

Note: There was another thread where they were talking about old "fixed" adjusters that were longer in length. I believe they were referring to this same condition and did not realize that the lifter could be compressed if you put it in a vise.


Clint