Originally Posted by snapmorgan (Post 4364319)

Sorry, not trying to derail your thread, but it looks like I need to clear out some PM's as my inbox has exploded with comments from people who have had similar experiences as me, but weren't ready to rock the boat yet.

Originally Posted by MILD THUNDER (Post 4364311)

Ive had good luck with my 4603 morels so far. A buddy of mine, had tie bar failure on his . A couple other setups friends of mine built had issues with them collapsing.

Im going to be tearing into mine soon and see how things are looking.

I believe morel makes the lifters for pbm, howards, lunati, cam motion, possibly crower ?

I did have an issue with a collapsed lifter early on, not sure if it was due to the lifter, or something else. Only one lifter was bad. So i was able to order 1 pair of lifters from lunati. They are the same as the 4603 morel, i wanna say the part number was 72431 ...id have to check my lunati catalog when i get home.

Originally Posted by snapmorgan (Post 4364312)

Nothing to do with geometry. Bad from the get go. To be more specific, I have had 2 sets of hydraulic roller lifters that about half of them would not adjust. The plunger would not depress. They acted like solids. Both sets were replaced, but had 2 collapse on a very mild setup. .625 lift 150/450# deal after very low hours. Not interested in ever using them again. The stock GM ones have worked perfectly in both of these aps where the Morel's didn't. I am not sure of the exact part# of the ones I tried, but they were sent with the cams from Bob. Oh yeah, and the cam that was ground wrong cost me an engine from reversion in about 2 hrs run time. Has since been corrected and running strong, but not with those parts.

Originally Posted by Sonic30ss (Post 4364296)

Jamie I'm not going to broad stroke here and say they are junk I'm sure there are many that are working fine.
Not sure I'll ever know why, but I do have the remains of a PBM lifter scattered throughout one of my engines.
Saw a comment on a web site that said around 60 hrs they had problems with the .842 lifters, maybe Internet talk? But at around 80 I've got a mess to clean up.
According to what I've been able to dig up Callies makes Morel, PBM, Cam Motion, Lunati and others, same lifter just different brand names.

I personally don't have enough confidence to put them back in after refresh and will be taking them out of other motor too.

Originally Posted by Diamond Dave (Post 4364327)

Just curious what lifters everyone prefers...?

Originally Posted by 33outlawsst (Post 4364332)

I guess trying to sell a couple sets of these on this thread would be impossible, LOL

Originally Posted by SB (Post 4364344)

Issue with saying no more morels is that they make probably 75-80% of everyone else lifters. I honestly don't think you can totally hose the seller of them, as again, pretty much everyone - including most cam companies - sold and used them.

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Another subject on same subject...lol....for those who have broke a HR lifter, did they measure camshaft end play when taking apart the motor ?