Arrgh! rearend has to come out AGAIN...it did & its BROKE--under warranty!

[Just 6T9 CHGR]

Last season I bought & put in a repro clutch type Sure-Grip that I bought off Dr. Diff.
Late in the season I was noticing a "popping" sound coming from the rear on slow turns etc.

Starting out this season the noise has gotten progressively worse & louder to the point that the "pop" actually shakes the whole car & drive train.  Contacted Cass (Dr. Diff) & he thinks its a lubrication problem where small metal flakes in the oil stick to the clutch plates causing them to stick together.
Suggested taking out the rear, cleaning out the housing, use 85-140 GL-5 gear oil with a bottle of the GM additive which he says is the most potent stuff out there now.
More work to do before E-Town in a week....

[694spdRT]

Sorry to hear that.  

Did Dr. Diff say this was a common problem? Hope that is all it is.

[tan top]

oh no !! sorry to hear that Chris !!  hate axle oil smell  

[c00nhunterjoe]

is it dragging the tires then popping or is it more of just a popping by itself? only 2 things i can think of that cause that is the clutches as stated or the spider gears torn up

[Just 6T9 CHGR]

Ruh roh....NOT what I wanted to see.
Bought the unit in 9/09 & put a max of 250 miles on it.   Emailed Dr. Diff to see what recourse I have from him.

[Charger-Bodie]

Not Cool. 

[BB1]

Just keep your foot out of it. 

[RD]

holy crap.. 250 miles and that happened? you ever think of driving it more?

[ZSmithersCharges]

Some super glue aughta fix that no problem

[Just 6T9 CHGR]

Not Cool. 

Not cooler is the fact that next weekend is the Mopar Atlantic Nats

Luckily I still have a friends "spare" 3.23 SG rear that's a 741 case with the small u-joint.....luckily I have a spare small joint drive shaft as well.  Ill slap that in temporarily till I get mine squared away

[bill440rt]

Aw, dude....  
That sucks beyond all comprehension. Puh-leeze tell me he will warranty his work. 250 miles and that happens?? Really???       You don't beat the crap out of your car, it is babied. That never should have happened.
I feel for you, man.

[bill440rt]

Not Cool. 

Not cooler is the fact that next weekend is the Mopar Atlantic Nats

Luckily I still have a friends "spare" 3.23 SG rear that's a 741 case with the small u-joint.....luckily I have a spare small joint drive shaft as well.  Ill slap that in temporarily till I get mine squared away

Oooh! You posted that while I was typing my reply.
A quick fix! GREAT news already!
But, still keep me posted on the Doc. 

[RJS]

Aren't these old cars fun?!!!!!!!!   That bites , hope everything else is still in good shape .

[694spdRT]

Well, that officially sucks. 

[tan top]

Ruh roh....NOT what I wanted to see.
Bought the unit in 9/09 & put a max of 250 miles on it.   Emailed Dr. Diff to see what recourse I have from him.

oh no  not good ! only 250 miles !!     another guy on here kept having diff problems  after only a few miles , forget now who it was

[firefighter3931]

Chris, was that a brand new ring & pinion ? Definately a defective part if it was 

Sorry about that buddy 


Ron

[resq302]

Ron and Chris,

From the looks of it, those appear to be the teeth of the spider gears.  That really sucks man.  I know how you feel about having bad luck right before shows.  Ive been there and scrambled trying to get parts.  Twice in the same year, the day before a show I had my water pump crap out and the following show, had the alternator crap out.  I feel your pain man.  Luckily you had a "spare".

[ACUDANUT]

oh no !! sorry to hear that Chris !!  hate axle oil smell  

We call that skunk juice around here.

[Musicman]

Bad... Not Good

Sorry brother... I hope Dr Diff helps you out here
I guess we'll wait and see

[Just 6T9 CHGR]

Chris, was that a brand new ring & pinion ? Definately a defective part if it was  

Sorry about that buddy  


Ron

no just the SG was new......no damage to the R & P

[472 R/T SE]

I had Wildcat Dennis build my power lock pumpkin.  I only run it for one season & whenever I turned corners the rear tires would start chirping. 

I had another guy take it apart to check it out & he said it was put together dry, so the lubrication theory was sorta right with mine.  The housing gets filled with the oil so I don't know how/why putting it together dry mattered.

Sucks for you, hope you get it all dialed in for your upcoming shows.  It's one thing to miss the show but you're sportin' a whole new look & I'm sure you're amped to show it off.   

[firefighter3931]

Chris, was that a brand new ring & pinion ? Definately a defective part if it was  

Sorry about that buddy  


Ron

no just the SG was new......no damage to the R & P

Dang....busted SG unit ? Don't see that very often 

I should have looked closer at the pic....saw the broken teeth and assumed the busted teeth were from the ring gear. 

Let us know how it turns out


Ron

[mikepmcs]

Sorry bout that Chris.  I was about to get in my car and drive you one down there til I read you had a spare.  I have one for Frank(FLG) that I have to give him still and have another as well.  Both 3.23 SG but cone though.

I needed an excuse to drive to NYC.   

[Just 6T9 CHGR]

Sorry bout that Chris.  I was about to get in my car and drive you one down there til I read you had a spare.  I have one for Frank(FLG) that I have to give him still and have another as well.  Both 3.23 SG but cone though.

I needed an excuse to drive to NYC.    

Ha thanks Mike!   You can still come because now I need 2 of the c-clips that go on the u-joint cups at the rear yoke side....dont know where they went 

[Just 6T9 CHGR]

Chris, was that a brand new ring & pinion ? Definately a defective part if it was 

Sorry about that buddy 


Ron

no just the SG was new......no damage to the R & P

Dang....busted SG unit ? Don't see that very often 

I should have looked closer at the pic....saw the broken teeth and assumed the busted teeth were from the ring gear. 

Let us know how it turns out


Ron

Ron, it was one of those aftermarket units....made by Nitro Gear I believe.   Hopefully Cass can do something for me....if not 3.54 Dana here I come! 

[mikepmcs]

I sent all the yoke stuff I had to Jackson(terribleone) last year.  all i have are the pigs with the guts. One 489 and one 741
Somebody has got to have those clips for you.

[BrianShaughnessy]

Ron, it was one of those aftermarket units....made by Nitro Gear I believe.   Hopefully Cass can do something for me....if not 3.54 Dana here I come! 

Good luck with everything...   hope it works out.  I'd look for factory spiders if possible.  Not sure on 'origin' of nitro gears.  

Somebody mentioned dry assembly... well yeah that does matter.  I did the trac loc rebuild awhile back with a kit from Cass and had to soak the new clutches overnight or something like that IIRC.  E-booger and I beat the snot out of it on cardboard and towels outside his shop.   It worked like new again after we got done  

Be glad for the little things like 8 3/4 pigs that come out.    On vehicle gear repair like I had to fix the Fiddynein kinda sucks - especially with crush sleeves.

Otherwise I'm sure he can do a Dana but you'll be spending a lot more     Needs shorter driveshaft also.

[terrible one]

I sent all the yoke stuff I had to Jackson(terribleone) last year.  all i have are the pigs with the guts. One 489 and one 741
Somebody has got to have those clips for you.

Thanks again man! Sadly I only used one for a limited time: Im rebuilding my differential at school and it turns out that the aftermarket pinion (motive gear) is 29 spline instead of 10 spline, so I had to get a new yoke!

That being said, Id love to help anyone out who needs one of these like Mike did for me. I have two 10 spline 7290 yokes and one 10 spline 7260. They all have grooves in them from the seal, some worse than others, but nothing a speedi sleeve won't fix.

Chris, are you talking about the clips that go on the inside of the u-joint? I've got an old 7290 joint that still has all of its c-clips if you need them.

[Just 6T9 CHGR]

Thanks but the 7290 is a large joint (which my orig shaft has)
this smaller 7260 shaft is smaller.....Ill get them somewhere!!
thanks all

[FLG]

Do you need clips for the larger or smaller?? I got em bith, I know there somewhere I just need to look.

Ill bring em to ya no problemo.

Just tell me when your free. Heck I'm even free this evening.

[AKcharger]

Wow! that's messed up, Dr. Diff ain't cheap either, I would not have expected that. Good luck!


Chris, you do know there's a u-joint out there at fits small-to-large yoke...a #7611 or somthing? I know I have one!

[Just 6T9 CHGR]

Do you need clips for the larger or smaller?? I got em bith, I know there somewhere I just need to look.

Ill bring em to ya no problemo.

Just tell me when your free. Heck I'm even free this evening.

Thanks Frank!  I think I have a connection here on the island that has them so no worries there.

Wow! that's messed up, Dr. Diff ain't cheap either, I would not have expected that. Good luck!


Chris, you do know there's a u-joint out there at fits small-to-large yoke...a #7611 or somthing? I know I have one!

Yes I know about the conversion joint but the spare rear has the 7260 joint & the spare driveshaft also has it so Im good to go in that dept.

[FLG]

Cool.

If ya cant get em just tell me.

[mauve66]

been over 10 years since i saw the inside of mine but isn't there a "thrust block" or something in the center of the suregrip that keeps the spider gears or axles from moving too far and possibly breaking teeth??
like i said been a long time sooooooo maybe not

[bull]

Made in China?

[Just 6T9 CHGR]

A bit of good news....the mfg warranties their parts for a year.   I have to ship the unit back to Cass & he will install a new gear set etc.  He is an authorized repair facility.
Stay tuned!

[resq302]

Downfall is Chris, you had to pay shipping back and probably shipping to you again for something that was a factory defect it seems.  I know when I was talking to Cass about getting a complete new third member from him, the shipping was out of this world.