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Originally Posted by SB
(Post 4416313)
For as long as Morel's have been around, people have complained about the noise they make. Same deal, at start up and take a while for them to quiet down.
Personally, I would choose oil based on your engine and it's operating conditions vs just for the lifters. Don't run hard until oil is over 180*F...no matter what the oil. This is all my IMHO with no scientific bases. LOL. I have only personally run one set of Morel HR's and they where as you describe. I ran at lightest 15W40 and heaviest 20W50, but not 10W40 as I couldn't mentally let myself even consider that. We can run 20-30 miles at or close to WOT. My experience is the heavier oils will carry more rpm (stability) with most hyd lifters. Weird that all the models make noise. They manufacture for a vast majority of the brands names out there including Howard, lunatai, and crane. |
I run isky's red zones w/ 15-50 mobil1 no noise from them,even at a 1/2 turn of lash.
I wonder if the lifts innards are so tight that they have air pocket that never bleeds out?any fluid is non-compressible,so if the cavity of the lifters were full,they'd be set.so its either air or they are loose,(losing oil pressure) |
My Morels would be silent on initial cold start, then 10-20 seconds after starting they would start making noise. They had 3/4 of a turn of preload. To me that indicated a viscosity issue when cold. After 5 minutes of run time they quieted down and were completely silent the rest of the day. I ran strictly 20W50 oil in those motors.
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I ran Joe Gibbs BR30 Break-in 5w-30 High Zinc for the dyno session's and had some noise, then changed to 20-50 full synthetic and they calmed down, no noise.
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Originally Posted by donzi matt
(Post 4416410)
My Morels would be silent on initial cold start, then 10-20 seconds after starting they would start making noise. They had 3/4 of a turn of preload. To me that indicated a viscosity issue when cold. After 5 minutes of run time they quieted down and were completely silent the rest of the day. I ran strictly 20W50 oil in those motors.
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Originally Posted by sutphen 30
(Post 4416399)
I run isky's red zones w/ 15-50 mobil1 no noise from them,even at a 1/2 turn of lash.
I wonder if the lifts innards are so tight that they have air pocket that never bleeds out?any fluid is non-compressible,so if the cavity of the lifters were full,they'd be set.so its either air or they are loose,(losing oil pressure) |
Try Gatorman, they are half the price, I've used them in four HP 500 Upper half rebuilds, quiet with half turn pre load. They will clear the sheet metal intake shield, and one of my customers runs the dog poop, out of his engines,,and no issues. Teague uses a lot of these lifters in there engines as well. I don't know how they will work with a crazy profile, but worked great with 500 efi cams
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Originally Posted by chefke
(Post 4416433)
Try Gatorman, they are half the price, I've used them in four HP 500 Upper half rebuilds, quiet with half turn pre load. They will clear the sheet metal intake shield, and one of my customers runs the dog poop, out of his engines,,and no issues. Teague uses a lot of these lifters in there engines as well. I don't know how they will work with a crazy profile, but worked great with 500 efi cams
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I usually don't post my opinion , but for all the problems I have read on this website about hydraulic roller lifters, and the advise of having to break them in with 5w-30, noise issues, collapsed plungers, This shouldn't be! Nothing worse than trying to do something right and then pulling intake manifolds to fix a problem. Those lifters are not Cheap! If the manufacture had to start paying labor to fix this crap they would be out of business.
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I prime the engines without the pushrods installed, completely bleeding out the lifters, prior to installing the pushrods. No problems here.
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