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Re: re-using Magnum lifters, or no?
[Re: Mad-Max]
#3215605
02/23/24 01:02 PM
02/23/24 01:02 PM
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Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
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Pushrod length-
Last edited by fast68plymouth; 02/23/24 01:05 PM.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: re-using Magnum lifters, or no?
[Re: B1MAXX]
#3216839
02/28/24 03:05 PM
02/28/24 03:05 PM
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Joined: Nov 2021
Posts: 246
Falcon, CO
Mad-Max
OP
enthusiast
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OP
enthusiast
Joined: Nov 2021
Posts: 246
Falcon, CO
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ok - I got a set of Melling MPR-667 (6.792" - and they measure out almost dead nuts), and installed two of 'em, along with re-installing fresh snap rings. With zero-lash of 6.764 these Melling 6.792s should be perfect...at least on paper.
Bottom line - it's good...I think. If I'm measuring right preload looks to be in the .015 - .020 range, and, when up on a lobe the snap rings will rotate all the way around in their groove. For sure there is positive preload with everything bolted tight, and the snap rings will rotate around without contacting the pushrods.
Topline says the lighter (<.030) preload is just fine, so I'm gonna run it as-is. And I'm hopeful my engine 'chatter' will be all but gone.
Last edited by Mad-Max; 02/28/24 03:20 PM.
71 Demon (project): 318, A-833od, 8-3/4, 3.23's
14 Wrangler JKU M-380 "Kilroy" (under construction): Magnum 360, 46rh, Atlas4, D60/14b-5.38s-Grizzlys, 40s
07 Ram 3500 MegaDually 4x4 "Big Mack": 5.9 6BT, G56 'Toy Hauler'
52 Willys M-38 "Poncho"
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Re: re-using Magnum lifters, or no?
[Re: Mad-Max]
#3218031
03/04/24 03:14 PM
03/04/24 03:14 PM
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Joined: Nov 2021
Posts: 246
Falcon, CO
Mad-Max
OP
enthusiast
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OP
enthusiast
Joined: Nov 2021
Posts: 246
Falcon, CO
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...ok - I'll take the lack of negative responses to the my preload query as a 'good' thing...and press on  Good research project - thanks for everyone's inputs. It'll be a couple months before I'm close to firing the engine, and I'll of course report back then. - Sam
Last edited by Mad-Max; 03/04/24 03:15 PM.
71 Demon (project): 318, A-833od, 8-3/4, 3.23's
14 Wrangler JKU M-380 "Kilroy" (under construction): Magnum 360, 46rh, Atlas4, D60/14b-5.38s-Grizzlys, 40s
07 Ram 3500 MegaDually 4x4 "Big Mack": 5.9 6BT, G56 'Toy Hauler'
52 Willys M-38 "Poncho"
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