Re: Dana 60 lost backlash, again
[Re: rickraw]
#3096141
11/21/22 07:43 PM
11/21/22 07:43 PM
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Joined: Nov 2003
Posts: 1,361 Out of the State of Confusion
blue_stocker
pro stock
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pro stock
Joined: Nov 2003
Posts: 1,361
Out of the State of Confusion
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Are you using an S60 or OEM housing? What caps? How much carrier bearing preload? When you set it up, did you spot check across the ring gear teeth for TIR as wellas backlash?
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them. Thomas Jefferson
Freedom must be repurchased by every new generation General Daniel Jones, WW2 Tuskegee Airmen
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Re: Dana 60 lost backlash, again
[Re: dvw]
#3096168
11/21/22 09:24 PM
11/21/22 09:24 PM
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Joined: Jan 2003
Posts: 5,987 Anoka County, MN
Leigh
master
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master
Joined: Jan 2003
Posts: 5,987
Anoka County, MN
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I haven’t had that problem but, I had a ProGear vibration big time on decelerating. I called Mark Williams, and after listening to the fault description, he asked if the pattern looked like a “flying v”. Indeed it did, and he told me to disregard the pattern, as the teeth move, depending on loads. I didn’t feel comfortable with the decel vibration, and installed a new gear set. FYI only.
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Re: Dana 60 lost backlash, again
[Re: Leigh]
#3096171
11/21/22 09:40 PM
11/21/22 09:40 PM
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Joined: Jan 2004
Posts: 4,561 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,561
Motor City
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I have a 1 Ton Truck Dana 60 axle that I cut down. The truck axles have much thicker tubes. We narrowed it, welded the tubes 100% and added weld to the plug welds. I made my own billet aluminum caps, use all strange components with a support diff cover. No issues yet.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: Dana 60 lost backlash, again
[Re: dvw]
#3096234
11/22/22 02:28 AM
11/22/22 02:28 AM
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Joined: May 2019
Posts: 710 Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 710
Lake Villa Il
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Spool and pinion had proper preload. What is your definition of proper preload for the diff and pinion? Initially set up with .007 backlash that tightened itself up to zero?
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: Dana 60 lost backlash, again
[Re: INTMD8]
#3096246
11/22/22 09:12 AM
11/22/22 09:12 AM
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Joined: Mar 2006
Posts: 9,813 MI, usa
dvw
OP
master
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OP
master
Joined: Mar 2006
Posts: 9,813
MI, usa
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The pinion preload; 1st set with new bearings was just over 20"/lb. Last set with used bearing was actually a touch tight at 15"/lb. Last rotating torque with the carrier was 30"lb. And yes it started at .007" and has zero. I've been told the teeth bend tightening it up. More than one source suggested far more backlash to start. Close to .014" Doug
Last edited by dvw; 11/22/22 09:13 AM.
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Re: Dana 60 lost backlash, again
[Re: dvw]
#3096249
11/22/22 09:29 AM
11/22/22 09:29 AM
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Joined: Sep 2008
Posts: 656 Florida
CJD AUTOMOTIVE
mopar
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mopar
Joined: Sep 2008
Posts: 656
Florida
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Backlash seems awful tight for a race gear. We set street up for .005-007". Most race gears are .012" up, depending on manufacture.
Craig Scholl CJD Automotive, LLC Jacksonville, FL www.CJDAUTOMOTIVE.com904-400-1802 "I own a Mopar. I already know it won't be in stock, won't ship tomorrow, and won't fit without modification"
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Re: Dana 60 lost backlash, again
[Re: dvw]
#3096258
11/22/22 10:30 AM
11/22/22 10:30 AM
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Joined: Mar 2003
Posts: 2,490 PA
moparacer
top fuel
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top fuel
Joined: Mar 2003
Posts: 2,490
PA
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I posted a reply to your thread over on the Bullet doug but I don't know about teeth bend, "tightening it up" so to speak.....Has anyone else on here ever seen that? I would think breaking would be soon to follow. I have not and like I have said many times I beat the living snot out of my Dana with a trans brake now with 1.19 60 fts. and have used Motive, Richmond and other gear sets. I have ran my backlash loose too I might add. .010-.012 at times on old worn gearsets. Foobraking should be so much easier too. The gears would last twice as long you would think.
67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174
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Re: Dana 60 lost backlash, again
[Re: FastmOp]
#3096283
11/22/22 12:02 PM
11/22/22 12:02 PM
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Joined: Mar 2006
Posts: 9,813 MI, usa
dvw
OP
master
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OP
master
Joined: Mar 2006
Posts: 9,813
MI, usa
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It looks like I should be setting it looser. Recomedations for a Richmond 4.10 pro gear? Or Motive standard gear? I have to wait to get it completely apart as I need the hoist for a couple of jobs first. I have a 3 series spool. If it needs a new gear I think I'll go back to a 4.10. It goes thru at 7250 rpm now. Doesn't really need to be that high. Besides if I ever decide to try a 315 radial It'll need less gear. Doug
Last edited by dvw; 11/22/22 12:04 PM.
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Re: Dana 60 lost backlash, again
[Re: dvw]
#3096288
11/22/22 12:10 PM
11/22/22 12:10 PM
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Joined: Aug 2003
Posts: 4,670 On the parachute mount
n20mstr
master
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master
Joined: Aug 2003
Posts: 4,670
On the parachute mount
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Is the housing flexing on launches?? Are the tubes stock? maybe time to brace the housing somehow.
....BAD A$$ STREET CAR.....
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Re: Dana 60 lost backlash, again
[Re: n20mstr]
#3096300
11/22/22 12:56 PM
11/22/22 12:56 PM
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Joined: Jan 2003
Posts: 13,345 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,345
Marion, South Carolina [><]
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Is the housing flexing on launches?? Are the tubes stock? maybe time to brace the housing somehow. This was my thought also. Seems like every time I've heard of a Dana having problems keeping a gear in it, you end up finding the housing was bent. Monte Smith warned me about this years ago when I decided to keep my Dana and not change to a 9".
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Dana 60 lost backlash, again
[Re: an8sec70cuda]
#3096323
11/22/22 02:16 PM
11/22/22 02:16 PM
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Joined: Dec 2005
Posts: 11,484 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,484
Fulton County, PA
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1.20ish 60 @ 3300# is nothing to sneeze at. Especially with a radial, if you are running those.
People at MW have also said, current R&P sets are not what they used to be, and you just have to deal with it.
If the results don't match the theory, change the theory.
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Re: Dana 60 lost backlash, again
[Re: dvw]
#3096355
11/22/22 04:40 PM
11/22/22 04:40 PM
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Joined: Jan 2003
Posts: 17,836 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,836
S.E. Michigan
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Wow. Nice detective work.
Rich H.
Esse Quam Videri
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