Choppy_Idle

Hey Guys,

look at this prop shaft Joint on diff side, someone can told me, what they have done before, the boot there is also broken:











Best regards,
Ronald

jmargo

iTrader: (10)

Someone's been in there before. You can see tool marks on the bolts. Possibly lowered the diff to change a bushing with the DS still attached.

ls1247

iTrader: (2)

Could you fix that Voodoochikn?

Choppy_Idle

Yes, i´ve seen the marks on the bolts, maybe they changed whole diff into a newer one, will look at the # next time when i´m under the car.

But which tool you need on this place here to do something for swapping the diff and that causes such a damage?

And what about vibrations at high Speed, it will be out of balance now?

Best regards,
Ronald

Fweasel

iTrader: (6)

yahtzee! Exactly what I was thinking too.

07CTS-V

iTrader: (6)

Not sure why someone would need to be inside there. It comes apart from the other side of the CV. It was probably on a shelf or disconnected at the front and center dangling from that end and someone rotated the tires. Or they pried it the retrying to get it apart.

Choppy_Idle

That it is, what i was thinking!

There will be a centering on input flange from diff, so i have to use a jemmy or something else that it will come loose, bec it´s be baked together on this place ?

Best regards,
Ronald

voodoochikin04

iTrader: (3)

I haven't been able to source those rear caps/boots.... Yet.. But as long at there isn't any grease leaking out...its ok. Or water getting in. I'd clean it and silicone over the tear. The deformation won't be a problem if it isn't hitting anything.

ryridesmotox

When I did my rear subframe bushings, I noticed a very similar deformation in the shaft in that location as well. Mine didn't have a torn boot though. I'm wondering if my diff was replaced. I wrote the number of the diff down but promptly lost it. I wanted the number so I could verify the generation of it. Also, on mine the witness marks, the paint that the original assembly person put there to show proper shaft alignment was one bolt off. I put it back to original. I dunno just weird, someone has been in there before.

Choppy_Idle

@ Matt: Yes, i share your opinion about leaking grease and getting water into the boot, want to clean the tear and put some electrical tape on it which is like a rubber band with welding function and hope it will hold up in its position, Silicone maybe also an Option!

The reason why i´m worried about the unbalance is, if next year when i got the summer tires in W or Z spec, i wanna lead the top Speed of this car and when i reach this around 160mph, the prop shaft will turn (6500/0,84 or 4500/0,56) 8000rpm, there will be a small unbalance become a big onces and i´m worried about a exploding diff or something like that, i´ve seen and read a lot from bad diffs here, didn´t been happy to get this experience at top Speed, all noises and vibrations are unknown from this car for me, bec i´m a newbie in GM cars!

Best regrads,
Ronald

voodoochikin04

iTrader: (3)

That deformation won't cause any balance issues. Also when they balance driveshafts to determine where to put the weights they use Velcro straps to hold the weights in place (most do)... So tiny bits of weight like a ziptie...dab of silicone... Won't cause an unbalance even at 8,000+ rpms.. Electrical tape will not hold on unless secured with a zip tie. Water can still penetrape that.

I'll try to source that part and you can send your shaft in for poly upgrade and a new rear boot cap!