Anyone using Morel Lifters?
#21
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10X
Jeff is putting Morel's in my motors. I don't plan to turn 6000 rpm
but I'm glad to hear they are the way to go.
Jeff is putting Morel's in my motors. I don't plan to turn 6000 rpm
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#22
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10x has a good point. I just got the heads off my engines this weekend. My heads also show signs of valve float. Crane advises using 150 on the seat and 400+ open. The guy that put my new heads together used 140 and I'm going to check them to see what they actually are. Last year, when I broke a lifter , I changed from solid rollers to hyd rollers, I asked the tech at Crane if I could use my existing cyl heads without changing springs. He said go ahead and it worked fine with 200 lbs of seat pressure. If the bearings in the lifter are the same size as solid rollers and the hydraulics can take it, why not?
As for the Morel lifters, I'm not happy adding to the weight of the valve train. I am considering using Comp's new beehive valvesprings to lighten it up some. How much difference is there?
As for the Morel lifters, I'm not happy adding to the weight of the valve train. I am considering using Comp's new beehive valvesprings to lighten it up some. How much difference is there?
#23
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Just a note form Morel. A company tested the solid lifter design to 8400 rpm for 5M cycles. Lifters were perfect. Decided to go for broke, repeated the test. Lifters were perfect again. That is a testiment to their quality.
Chris
Chris
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It seems like the maximum spring pressure one would want, would be the minimum it takes to get the job done. If you can operate at 150lbs, why would you want to run 200? It takes away horsepower, and is much harder on the valve seats and the complete valve train.
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The minimum spring pressure is that which controls the valvetrain with no float at your desired rpm. Valve float will damage parts and reduce horsepower. As far as running 200lbs, I was rushing the repair in order to salvage the rest of the season. I was not recommending it, just saying that it can be done and the hydraulics in the lifter can handle it. I do believe that Frank (10x) is right on the money and there is benefit to running a little more spring pressure.
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Originally Posted by Whiteknuckle
It seems like the maximum spring pressure one would want, would be the minimum it takes to get the job done. If you can operate at 150lbs, why would you want to run 200? It takes away horsepower, and is much harder on the valve seats and the complete valve train.
#28
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cstraub69, if the test was at 8400 then they must have had some fairly stout spring pressures. From what I hear in a boat application trying to idle for 5-10 minutes at a time at 800-1000 rpm the spring pressures create excess heat in the lifter due to lack of oil getting to the lifter/cam, then it is all down hill from there. Do you happen to know what Morel is recomending for pressures to run 6200-6500 with their solid roller? Is their design of the lifter any different than competitors that gives them an advantage or is it materialsn they use? Thanks, Bob
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Originally Posted by Bob
cstraub69, if the test was at 8400 then they must have had some fairly stout spring pressures. From what I hear in a boat application trying to idle for 5-10 minutes at a time at 800-1000 rpm the spring pressures create excess heat in the lifter due to lack of oil getting to the lifter/cam, then it is all down hill from there. Do you happen to know what Morel is recomending for pressures to run 6200-6500 with their solid roller? Is their design of the lifter any different than competitors that gives them an advantage or is it materialsn they use? Thanks, Bob
5m cycles at idle.
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I use Morel lifters (via Isky) in all of my engnies and never had a problem. The solid lifters are pressure fed pins. No idle problems that I have seen and 155ish on the seat for the hyd rollers. Spin them to just over 6K RPM