Post by
float_6969 »
https://forums.nicoclub.com/float-6969-u780.html
Fri Feb 16, 2007 6:55 pm
The oil comes into the lifter from the opening in the side. It leaves via the opening in the top, which also lubricates the cam. When it's installed in the motor, the oil pressure mostly prevents the lifter from compressing. If the lifter is clean and free from debris, then it should be compressable. If it's not, then it may be bad. I can't promise you that when you start the motor up and run it that they won't pump up and be fine. The ones that won't compress may be compressed already and aren't de-compressing. It's just kinda hard to tell.
The way I look at it, for the $80+shipping (lets say $90) that's relatively cheap insurance to know they'll be fine.
And just so you know, I'm not really making money on this whole deal, I'm just doing this as a favor to my fellow NICO brethren.