[JLMounce]

Fwiw I’ve had Lunati link bar lifters on my comp hr for about 15000 miles. I’ve not had any performance or reliability issues with them. They clatter terribly when the engine is warm however. Clearly collapsing.

It’s not just the lifters that are a concern here. The oiling system in basic street builds seems to be an issue as well.

I’ve followed everyone of of these threads and from pulling ideas, thoughts and observations from them all, not only do we need a quality lifter with good internal tolerances and QC, but the engine also needs to be able to supply (by my estimate) 30psi of oil pressure at hot idle.

If like me you have an engine that will only hold 15 psi on a 10/40 oil at 900 rpm hot, and you match the system with a set of lifters that have looser internal tolerances. Well, that’s a recipe for a noisy valve train.

While I haven’t had any reliability issues with my lifters, the constant hammering of the lifter internals at idle as the lifters collapse can’t be good for them.

Given my experience and research I believe that a modernized, well built and blueprinted oil pump, setup to supply 30-40psi at 800 rpm is a requirement to a successful hydraulic roller cam conversion. Along with choosing good quality lifters that have a correct oil band height. Whether those lifters are link bar or using a dog bone as it’s capturing device.

There are obvious cost and weight advantages to this setup being discussed that makes it so intriguing.