Hydraulic roller lifter technical question COMP..MOREL ???

[GARY C]

Ok... so I have looked up the Herbert lifters.
Interesting their 7500 rpm lifter says they can run huge spring pressure... and they have to use 20-50W oil minimum.
The big pressure valve spring seems to make me think that it may suffer similar problems to a solid roller. Where lifter failure when idling for too long on the street is a cause of failure.
Maybe their 7000 rpm ones will work. I'll call them I think.

Morel's high rpm lifters are designed to run nothing heavier than 5W40 weight oil. NONE of Morels lifters will function properly with 20W50 due to their mfg tolerances. Copied directly from Morel:

5045 5043 0.842 0.750 BBC.842D T/B HI RPM O/C DO NOT USE OIL HEAVIER THAN 5W40

Is the 50 series their short travel lifter?

[mdrew]

Ok... so I have looked up the Herbert lifters.
Interesting their 7500 rpm lifter says they can run huge spring pressure... and they have to use 20-50W oil minimum.
The big pressure valve spring seems to make me think that it may suffer similar problems to a solid roller. Where lifter failure when idling for too long on the street is a cause of failure.
Maybe their 7000 rpm ones will work. I'll call them I think.

Morel's high rpm lifters are designed to run nothing heavier than 5W40 weight oil. NONE of Morels lifters will function properly with 20W50 due to their mfg tolerances. Copied directly from Morel:

5045 5043 0.842 0.750 BBC.842D T/B HI RPM O/C DO NOT USE OIL HEAVIER THAN 5W40

What would happen if 50 weight was used?

[wyrmrider]

But if you honda says 5W-20 (or similar) do it
with today's tighter clearance on the pistons and knowing most wear is at start up I'm moving to lighter 5W-30
or 0W-x in cold weather climates 5W40 for desert
It depends
but that heavy oil is as stated above
In the boats cold start- Idle 300 feet Hit full throttle with a skier- happens all the time so oil for it
same for pulling out of the carport and a block to the freeway
you can idle forever and oil temp will not come up much

[mdrew]

Thanks for the response. I was just wondering if the problem was lifter pump up, or bleed down, or combination of both. I have a preference for the high speeds. I generally use M1, 5-30 or the M1 0-40 euro blend in LS builds (which are becoming my norm it seems).

[piston guy]

Morel
Shaver
Johnson/Hylift
Johnson
Gaterman
Delphi
Eaton
and a guy in ID who's name escapes me.

Thanks Chris , that was my point , more than just two manufacturers.

[Keith Morganstein]

who makes comps short

Comp short travel are made by Shaver manufacturing (USA) I've used a few sets in BBC' s after learning about them from Randy M. They have been working very well with 10w30 oil and the big PAC beehive spring. They are not "undersized on O.D" like some lifters.

I've installed the morel street style .700" roller wheel in street/hotrod/resto stuff. They've worked out well too.

The best morels are as good as it gets IMO.

[Schurkey]

Morel's lifters will rpm. They found how to do this was with the tolerance between the body and valving.

"Tolerance" or "clearance"?

[novadude]

Morel
Shaver
Johnson/Hylift
Johnson
Gaterman
Delphi
Eaton
and a guy in ID who's name escapes me.

I thought Crane made their own hydraulic roller lifters too. Has that changed?

[Mark Williams]

Morel
Shaver
Johnson/Hylift
Johnson
Gaterman
Delphi
Eaton
and a guy in ID who's name escapes me.

I thought Crane made their own hydraulic roller lifters too. Has that changed?

Im in the market for a set of hyd roller lifters for my bbc.
Was thinking of crane dont they make their own lifters anymore?

[My427stang]

Morel or Howards(Morel)...I wouldn't waste my time with anything else. They work, don't cost any more, and many many successful builds out there without incident

[novafornow]

Don’t sell Crower short. I have several of them in service with zero issues.