for what it is worth, bushed vs needle roller lifters

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cjperformance
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Re: for what it is worth, bushed vs needle roller lifters

Post by cjperformance » Wed Aug 16, 2017 8:23 pm

MadBill wrote:
cjperformance wrote:...Look at the bushing, you can see a mark that goes from one side to the other, this is on the loaded part of the roller in line with a flattened skid on the outside of the wheel. Measures up at .0005" of a dip in the bush at that point...
Prior to pull apart, the roller wheel 'felt' smooth to turn, most of the time, then suddenly it would grip up then if turned further ir turned backward it would then free up and feel fine again, then occasionally grip up again. See the little flaw in the body im pointing the pick at, when I pulled the wheel out then started inspecting and noticed the flaw I touched it with the pick and a little flake of metal came out of there!
Fwiw all othe lifters were fine.
If I'm not reading too much into the data, sounds like the roller seized due to flaked debris, causing the bushing to indent at the contact line due to lack of rotation? if so, this could perhaps be classed as a lifter issue but not a bushing failure.

Definitely not blaming the bushing here, if anything imo was to blame its the lifter body, last pic I posted shows a tiny flaw near the oil hole next to the wheel, I think whats hapoened is either a piece of metal from that flaw or something embedded there from the factory and stuck in place with the tacky/waxy pre lube these come with, has then loosened up with movement and hot engine oil when running, the flaje has then moved out and acted as a wedge like brake in the wheel leading to the failure. Even with the .0005" dip in the bush the wheel turned smooth and free then would get hard to turn , almost lock, then with some effort OR by turning the wheel backward it would then free up and turn fine again for several revolutions then randomly lock again, at which time there would be no sude clearance in the wheel! When unlocked there was correct side play. I 'think' the flake was there from point of assembly because the flake is too thick to fit between the fork and wheel after assembly.
Craig.

Rowdy Yates
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Re: for what it is worth, bushed vs needle roller lifters

Post by Rowdy Yates » Mon Dec 03, 2018 1:48 pm

Would it be possible to change the wheel and axle of the normal Morel bushed lifter to the Mamba style wheel and axle? You can buy EZ roller lifter with bearings and convert them over to a bushed style lifter. Would be nice as I've got Morel 6177 bushed Lifters and worry about debris and the Mamba's don't have this problem.

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Re: for what it is worth, bushed vs needle roller lifters

Post by MELWAY » Mon Dec 03, 2018 3:34 pm

Warp Speed wrote:
Mon Aug 07, 2017 5:38 pm
In-Tech wrote: Once again, looking for experiences.
Cup, Truck and Xfinity series all use needle bearing lifters........no rev kits!
If you could use a bushed or black mamba lifter would it be better for you?
3370lb Sedan 9.89@136MPH 358chevN/A

Belgian1979
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Re: for what it is worth, bushed vs needle roller lifters

Post by Belgian1979 » Mon Dec 03, 2018 4:55 pm

FWIW last winter I had to do work to my intake and I got a chance to check all my needle lifters (Morel). These are used with a revkit. Did about 4000 km on the street. Lots of idling. No issues to be found with the wheels.

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Re: for what it is worth, bushed vs needle roller lifters

Post by Rowdy Yates » Tue Dec 04, 2018 4:06 am

My Idea won't work.... From the man himself. Mamba Lifters allow more oil contaminates vs 6177's that's why I asked. It's just money. So I'll work with what I have as 1k + another $1200.oo in lifters, I Gotta ask! 😉 I like the newer technology..... Things I do different : ring size - standard Gen V GM , lifters- Morel Black Mamba and newer Melling low Volume oil pump. Not to bad considering parts come out so often.

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