Re: EZ Rollmax lifter unhappy
[Re: Stanton]
#3133769
03/30/23 11:02 PM
03/30/23 11:02 PM
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Joined: May 2019
Posts: 713 Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 713
Lake Villa Il
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You are correct that all oem are a needle bearing roller. I think something else to consider however is they are all also hydraulic and not solid lifter so not subjected to the same shock loads.
Not sure on your issue. Would be curious what lifter to bore clearance is. I've read that that brand can have a bit of an undersize/taper at times.
I use a different type non needle bearing lifter on mine and with the unbushed lifter bores needed to have a specific base circle and max lift as to not uncover the oil passage. Just something to consider as I'm not sure how big "large feed hole" is.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: EZ Rollmax lifter unhappy
[Re: RobR]
#3133807
03/31/23 08:03 AM
03/31/23 08:03 AM
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Joined: Jan 2003
Posts: 4,077 Shelby Twp. Mi
HardcoreB
master
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master
Joined: Jan 2003
Posts: 4,077
Shelby Twp. Mi
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... Long story short the bushings are worn on every lifter.Has anyone seen this before?? Yes, I know of one and he'll likely share the exact details, it was DVW. He had a single lifter go away quick. Sent that one? or ALL them back and ISKY repaired or replaced just the one from my recall. Same spring loads. I know he mapped the axle pressure feed circuit and it showed the feed hole was below or nearly below the bore. Obviously a bushing would want full time pressure, and that might be something you'd want to check.
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Re: EZ Rollmax lifter unhappy
[Re: RobR]
#3133841
03/31/23 10:29 AM
03/31/23 10:29 AM
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Joined: Aug 2005
Posts: 760 Southington Ct.
turbobitt
super stock
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super stock
Joined: Aug 2005
Posts: 760
Southington Ct.
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My first thought would be that the lifters may want a high zinc oil since there are sliding contact surfaces vs. rolling. Contact stresses are way down compared to a needle roller and should see wear unless something is way out of whack. Another thought would be if the oil is not getting to the roller. And that can open up another subject and can of worms.
Even though there is a lifter bushing with a oil hole, if you are using a mopar bodies lifter meant for a stock bore you may be restricting or cutting off the oil supply to the roller. Typically with a bushed bore, you would use a chevy style bodies .903 lifter with an oil band to catch the oil from the oil feed from the oil bushing and supply the bushing on the roller lifter.
AG.
1970 Challenger w/572 Hemi street car and my pride and joy.
1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno.
1976 Cee Bee Avenger Jet Boat - 460 Ford powered.
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Re: EZ Rollmax lifter unhappy
[Re: RobR]
#3133850
03/31/23 10:52 AM
03/31/23 10:52 AM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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https://board.moparts.org/ubbthreads/ubbthreads.php/topics/2427893/1.htmlAs a follow up to that thread....... There were no problems with the upgraded replacement lifters on that build. I was contacted by someone who had used the same type of lifters as the ones we had problems with, and they had no problems. He made it a point to tell me he had gone with the “ez-max” bearing material. The replacement lifters I got had the ez-max bearings....... and the pressurized edm oiling option.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: EZ Rollmax lifter unhappy
[Re: fast68plymouth]
#3134680
04/03/23 10:04 AM
04/03/23 10:04 AM
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Joined: Jan 2003
Posts: 4,077 Shelby Twp. Mi
HardcoreB
master
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master
Joined: Jan 2003
Posts: 4,077
Shelby Twp. Mi
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https://board.moparts.org/ubbthreads/ubbthreads.php/topics/2427893/1.htmlAs a follow up to that thread....... There were no problems with the upgraded replacement lifters on that build. I was contacted by someone who had used the same type of lifters as the ones we had problems with, and they had no problems. He made it a point to tell me he had gone with the “ez-max” bearing material. The replacement lifters I got had the ez-max bearings....... and the pressurized edm oiling option. Thanks for retrieving the old thread Dwayne. Almost 2? years ago I called over to Isky and Richard got on the phone. We reviewed the 3 different sets of "BBChevy" lifters I had on hand, he was reasonable to talk with. Some bodies are now obsolete. Since then I sent one set in that I had them swap the captured link bars over to BBMopar, i can tell you that my experience was GOOD. These are bearing-style .937/.850 wheel, PR oil, offset intakes and I'm about to see how they package in my KB block. But the old thread is relevant in identifying one of many issues here for posterity.
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