I had Morel hyd. roller lifters on a .660 lift hyd. cam. Tried every thing known to man get them to quiet down thin oil, lots of preload oil galley work on and on. The only thing that worked was to jerk them out and then install them in the garbage can. bought a set of Howards solid rollers with pin oilers. works great so far.

Before they moved operations to CHINA I ran the good morels from 9 years ago for 7 season with 235/585 spring pressure and zero issues. Only replaced them because I thought it was time .
The XD`s lasted 2 seasons.

From a cam 'guru' :

I work with 2 of the biggest offshore boat engine builders in the country, and after fighting with hydr rollers for the last 2 decades, they have both switched to mechanical rollers, and have had much better reliability.

When a hydr lifter works correctly, it's great. When it doesn't, it's a disaster.

If for some reason the oil foams, the lifters will quickly collapse, and beat the heck out of the valvetrain.

If you decided to go mechanical roller, we could reliably add some lift, and still be easy on the valvetrain

We also offer a mechanical roller lifter with no needle bearings and no bronze bushings.

It's the most durable lifter available, and have been running them in boats for years.

They're $1,260 a set for the .904" diameter.

I hate to see this. I put the XD's in the last 5 engines that I built. As a matter of fact, I was sort of recommending them when everyone else was having all of the trouble with the Morel's. To the best of my knowledge though, none of these engines have had any trouble.

Here is a related/unrelated question. Why do the tie bars and forks/axles live on a solid lifter with more lift and higher spring pressures, but won't live on a hydraulic?

Thats my question too! Theres only (1) guy left that I know of who still promotes Morel lifters , initials CS, is ANYONE actually buying them from him and using them?

Might be worth a call to Foxwell/Steelcomp (i know, although I never liked him much. More if an attitude and CS protecting thing, but that 2nd part is gone now.) On both the lifter oiling mod and who else uses the morel lifters still.

im just throwing this out as a possibility and may not be relevant at all but if the foaming of the oil is bleeding down the lifters is it throwing off the geometry resulting in worn forks/axles?

icdeppl - pretty sure I bought those same EVO steel on steel solid roller lifters your referring to. Not certain however I got mine through jones cams. Mike’s a pretty good dude. I believe a company close to his manufactures them. I read a very similar if not the same post as you pasted. I was completely sold on the concept as it makes a lot of sense in hi performance marine and other endurance builds.

I believe at this point a Johnson sourced lifter is best for our needs (outside of going keyed lifter). When I spoke with Isky they had some great options. Teague has his done a little differently as they are Johnsons sourced from Isky.

Google: morel lifter noise.

you’ll get about a million hits

Lol.. Somehow I knew Scott and Chris's name would come up...both synonymous with "Morel". Chris was the head cheerleader for them, and at the time (10 years ago or so) they were the hot ticket. He's the one that pushed me towards the Morels when I had him design a cam for me. I have no ill will towards him, and he designs a good cam. Had some ideas about my failure, but was willing to listen to other possibilities. Scott on the other hand has a bit of a temper and just wants to blame everything else. I had a thread on a couple "Other" sites about this a couple years ago. I wouldn't call Scott ****. JMO.

It looks to me like most have gone to the Johnsen's. I'm running the 2126's in a 555 i replaced that engine with. so far so good.

You have no idea on the history, was way further back than that, i’ll just leave it at that. I’m serious about the dart block oiling though. Broken record, skip, broken record, skip…..lolololol