I've heard nothing but problems with hydraulic lifters, is there a quality lifter anymore? American use to be known for their quality and people took pride in their work, what happened?
I have, and will always use FT hydraulics where suitable, as I always have, till I have a failure .
As with all things, prep is so important, and if you're asking what prep , you may expect problems.
Don't use Comp. .
Good luck .
