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Problem with my axle berrings #1646010 07/13/14 05:43 PM 07/13/14 05:43 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Hey guys the roadrunner just ate up the "Green" berrings after only a few thousand miles. I know when i had the REAR disc brake set up installed by a local shop the instructions called for replacing the factory taper berrings with the GREEN berrings for some reason?? Now that these green berrigns failed so quickly is it possible to go back to the stock Timkin berrings and not use the GREEN ones any more?? Thanks for help. Stu

Re: Problem with my axle berrings [Re: MidPenMopar] #1646011 07/13/14 05:49 PM 07/13/14 05:49 PM
Joined: Jan 2003 Posts: 9,826 las vegas 70AARcuda master
70AARcuda master Joined: Jan 2003 Posts: 9,826 las vegas	if you are running an set of aftermarket rear disc brake set up like strange..wilwood...the green bearing are necessary.... Tony 70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)

Re: Problem with my axle berrings [Re: 70AARcuda] #1646012 07/13/14 05:52 PM 07/13/14 05:52 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Quote: if you are running an set of aftermarket rear disc brake set up like strange..wilwood...the green bearing are necessary.... Ok, but why would they only last a few thousand miles??? I did some reading and they said they are for racing only and not to be used for a street car?? Could they just have been a bad set??

Re: Problem with my axle berrings [Re: 70AARcuda] #1646013 07/13/14 05:55 PM 07/13/14 05:55 PM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	Hey Stu, Not all kits require the "Green" bearings. Some kits such as ones available from DrDiff allow the use of the factory Timkens. Also, GREEN is a brand name. There are a few companies that make these non adjustable replacement bearings. I don't know if they all are just as unreliable, but I assume that they would be. They are a BALL bearing with only a fraction of the contact area of the tapered roller bearings from Timken. My Charger is on the second failing set in 9000 miles. There are some Mopar guys that are totally in love with these POS bearings but I certainly am not one of them. I prefer corners to drag racing and I have learned that they are terribly inadequate. I have the Dr Diff rear disc kit and plan to return to the stock type bearings soon.

Re: Problem with my axle berrings [Re: MidPenMopar] #1646014 07/13/14 05:55 PM 07/13/14 05:55 PM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	The Dr. Diff rear disc brake setup I have in my 68 Valiant runs factory tapered bearings. You might want to give Cass a call.

Re: Problem with my axle berrings [Re: MidPenMopar] #1646015 07/13/14 05:55 PM 07/13/14 05:55 PM
Joined: Jul 2004 Posts: 3,804 Arlington, Texas B bobby66 master
bobby66 master B Joined: Jul 2004 Posts: 3,804 Arlington, Texas	Did they remove the thrust block from the differential?

Re: Problem with my axle berrings [Re: bobby66] #1646016 07/13/14 06:00 PM 07/13/14 06:00 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Quote: Did they remove the thrust block from the differential? Dont know what that in unfortunately. I bought the SSBC rear disc kit and for whatever reason they mandated the ball berring type and not the tapered type. Would this be for some clearance issue on the axles maybe??

Re: Problem with my axle berrings [Re: MidPenMopar] #1646017 07/13/14 06:04 PM 07/13/14 06:04 PM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	I think it has to do with the axle endplay tends to change as the brake pads wear. The Dr Diff and a few other kits somehow have a way around that.

Re: Problem with my axle berrings [Re: Kern Dog] #1646018 07/13/14 06:48 PM 07/13/14 06:48 PM
Joined: Jul 2004 Posts: 3,804 Arlington, Texas B bobby66 master
bobby66 master B Joined: Jul 2004 Posts: 3,804 Arlington, Texas	If the thrust block is present it may put a load on the bearings, pushing out on them and leading to premature failure.

Re: Problem with my axle berrings [Re: bobby66] #1646019 07/13/14 06:52 PM 07/13/14 06:52 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	OK so with greens you do NOT want the thrust block in there? live every 24 hour block of time like it's your last day on earth

Re: Problem with my axle berrings [Re: bobby66] #1646020 07/13/14 06:58 PM 07/13/14 06:58 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Quote: If the thrust block is present it may put a load on the bearings, pushing out on them and leading to premature failure. Well now this is interesting. Maybe that is the case??

Re: Problem with my axle berrings [Re: MidPenMopar] #1646021 07/13/14 08:04 PM 07/13/14 08:04 PM
Joined: Aug 2005 Posts: 11,543 chicagoland,usa B buildanother I Live Here
buildanother I Live Here B Joined: Aug 2005 Posts: 11,543 chicagoland,usa	Stu, I wiped a set of greens myself by leaving block in place. Not all block equipped rears have that interference though. I would ask the doc as suggested. In my case , I was able to grind almost 1/8" off of each axle, re-istall new greens and they then lived a happy life.

Re: Problem with my axle berrings [Re: MidPenMopar] #1646022 07/13/14 08:11 PM 07/13/14 08:11 PM
Joined: Jan 2003 Posts: 74,948 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 74,948 U.S.S.A.	Quote: Quote: If the thrust block is present it may put a load on the bearings, pushing out on them and leading to premature failure. Well now this is interesting. Maybe that is the case?? More than likely the case , the only way around it is to cut your axles if you have a cone type sure grip because the only way to remove the thrust block from a cone type is to disassemble the sure grip.

Re: Problem with my axle berrings [Re: MidPenMopar] #1646023 07/13/14 08:14 PM 07/13/14 08:14 PM
Joined: Jan 2003 Posts: 25,729 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,729 Rio Linda, CA	Quote: I bought the SSBC rear disc kit and for whatever reason they mandated the ball berring type and not the tapered type. Would this be for some clearance issue on the axles maybe?? Rigid calipers don't like any axle end play, the rotors need to stay in the same relative in/out position that's why many brake kits require the Greens. I still believe there's no reason why the factory taper bearings can't be adjusted for a little preload on the bearings instead of the mandated few thousands end play...tapered front wheel bearings tolerate preload, why not the rears? The INTERNET, the MISinformation superhighway

Re: Problem with my axle berrings [Re: John_Kunkel] #1646024 07/13/14 08:27 PM 07/13/14 08:27 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Thank you everyone for the help. I understand now why the tapered berrings needed to be changed. I will take all your advice and suggestions and see if we cant get this rectified somehow. Stu

Re: Problem with my axle berrings [Re: MidPenMopar] #1646025 07/13/14 08:50 PM 07/13/14 08:50 PM
Joined: Jan 2003 Posts: 32,911 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,911 Grand Prairie,Texas	BEARINGS!!!

Re: Problem with my axle berrings [Re: stumpy] #1646026 07/13/14 09:31 PM 07/13/14 09:31 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Quote: BEARINGS!!! Sorry ......I stand corrected.... Bearings

Re: Problem with my axle berrings [Re: John_Kunkel] #1646027 07/13/14 10:03 PM 07/13/14 10:03 PM
Joined: Jan 2003 Posts: 8,667 Buford, GA I_bleed_MOPAR master
I_bleed_MOPAR master Joined: Jan 2003 Posts: 8,667 Buford, GA	Quote: Rigid calipers don't like any axle end play, the rotors need to stay in the same relative in/out position that's why many brake kits require the Greens. I still believe there's no reason why the factory taper bearings can't be adjusted for a little preload on the bearings instead of the mandated few thousands end play...tapered front wheel bearings tolerate preload, why not the rears? Always wondered about this myself. Quote: BEARINGS!!! I think stumpy needs a hug. Tim '71 Charger 383/727 '17 Challenger SXT (Wifeys car )

Re: Problem with my axle berrings [Re: I_bleed_MOPAR] #1646028 07/21/14 09:24 PM 07/21/14 09:24 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Ok so as suggested a cause of the problem was when i had the rear disc brake conversion done the shop that did it left the crush washer in. This caused the problem of the bearings failing. Its all apart and getting fixed as i type. Thanks for the advice!!

Re: Problem with my axle berrings [Re: MidPenMopar] #1646029 07/21/14 10:46 PM 07/21/14 10:46 PM
Joined: Dec 2004 Posts: 10,551 Rittman Ohio fourgearsavoy I Live Here
fourgearsavoy I Live Here Joined: Dec 2004 Posts: 10,551 Rittman Ohio	Stu there are hundreds of thousands of Toyota pickup trucks out there with the same basic radial ball bearings as your "green" bearings and they live long tortured lives for over 100K. The first question I ask when setting up a rear is what kind of axle bearings are you going to use? Rollers get the spacer and ball bearings do not. I would really call the expert Cass (doctordiff) for your options on tapered roller bearings if you don't want to disassemble your differential. There may be a bearing retainer that you can shim like a Ford pickup uses to adjust the axle endplay. Gus 8215762-rearviewsavoy.jpg (53 downloads) 64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60

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