Vibrating drive shaft

[GrabberBlue5.0]

Top notch customer service there!

Absolutely. Even after I told him I would call myself, he still insists on helping me get this taken care of. Jason is the man

 

[Napoleon85]

Absolutely. Even after I told him I would call myself, he still insists on helping me get this taken care of. Jason is the man

I can give a +1 on that from dealing with him as well.... not to threadjack but Jason is a stand up guy.

 

[Greg Hazlett]

Absolutely. Even after I told him I would call myself, he still insists on helping me get this taken care of. Jason is the man

Did you talk to them yet?

 

[GrabberBlue5.0]

Did you talk to them yet?

Yes, I just got off the phone with them. They recommended I rotate 90* at a time and retest until vibration goes away. If that doesn't work to give them a call back.

Here's to hoping it works

Unfortunately I probably won't be able to get back to it until Saturday

 

[BlackDragon]

Phew... left a few minutes early and took a detour to mexico and ran it up to about 120. No vibrations.

Hope you get yours sorted out, but to add to the mystery, my driveshaft also has a little bit chewed off a corner.

 

[Greg Hazlett]

Yes, I just got off the phone with them. They recommended I rotate 90* at a time and retest until vibration goes away. If that doesn't work to give them a call back.

Here's to hoping it works

Unfortunately I probably won't be able to get back to it until Saturday

Did you send them the pics to see if they considered that "normal"?

 

[19COBRA93]

I just installed a DSS in my car and it had no such grinding on that flange.

 

[GrabberBlue5.0]

Did you send them the pics to see if they considered that "normal"?

The guy I spoke with said that's part of what they do to balance the shaft adapter. I'm pretty sure that's not the problem though, as much as what has been taken off it should be wayyyyy worse is they hadn't balanced it

 

[86GT351]

I think the vibration is in the U Joint Cup being damaged like it is. With that damage shown, I bet that the needle bearings are displaced somehow.

 

[19COBRA93]

I think the vibration is in the U Joint Cup being damaged like it is. With that damage shown, I bet that the needle bearings are displaced somehow.

That just looks like debris or a metal shaving of some sort. I'm sure the OP can verify if it's an actual crack or not, but it doesn't look like it.

 

[GrabberBlue5.0]

That just looks like debris or a metal shaving of some sort. I'm sure the OP can verify if it's an actual crack or not, but it doesn't look like it.

I can't very easily crawl under the car right now lol, and don't have time to jack it up. I vaguely remember seeing what you guys are referring to as the crack and I think it was some sort of this wire or debris or something. I don't remember 100% sure right now, but I'll be sure to update everything this Saturday when I rotate the driveshaft

 

[travelers]

I never saw one like that when I worked at a shop that made drive shafts with Dana Spicer parts and we were a large distributor for them. That weakens the flange adapter at that point.

 

[86GT351]

I never saw one like that when I worked at a shop that made drive shafts with Dana Spicer parts and we were a large distributor for them. That weakens the flange adapter at that point.

Personally I have never seen that either. Generally when a shaft needs to be balanced, external weight is welded to it in specific locations!

 

[jayman33]

Yes, I just got off the phone with them. They recommended I rotate 90* at a time and retest until vibration goes away. If that doesn't work to give them a call back.

Here's to hoping it works

Unfortunately I probably won't be able to get back to it until Saturday

Just getting on, same thing they told me. Let me know if this doesn't take care of the situation. Sorry about the troubles brother.

 

[GrabberBlue5.0]

Just getting on, same thing they told me. Let me know if this doesn't take care of the situation. Sorry about the troubles brother.

Not your fault, I'll let you know how I goes though. Thanks!

 

[GrabberBlue5.0]

I never saw one like that when I worked at a shop that made drive shafts with Dana Spicer parts and we were a large distributor for them. That weakens the flange adapter at that point.

That was my thought too... I don't know enough about driveshafts or the engineering that goes into them to dispute it's integrity... But I do know that the integrity isn't what it would be if they hadn't ground it down.

 

[GrabberBlue5.0]

Small update: no new developments on getting rid of the vibration, but a little more on the adaptor flange. It seems that the adaptor flange is balanced separately and instead of adding weight (I'm not really even sure that is possible without it coming off at high speed) it has to be ground down, so this is nothing unusual from my understanding.

 

[19COBRA93]

I get that they would need to be balanced independently. But if a casting needs that much ground off it to balance, maybe they should look at the quality of the casting and revise it. This is what makes the difference between a quality part, and a shoddy part.

I just installed a DSS shaft on my car (my flange looks normal), and I'm not 100% happy with it (slight vibration at 100). So this is no surprise to me. I'm going to clock mine and see if it improves.

 

[GrabberBlue5.0]

I get that they would need to be balanced independently. But if a casting needs that much ground off it to balance, maybe they should look at the quality of the casting and revise it. This is what makes the difference between a quality part, and a shoddy part.

I just installed a DSS shaft on my car (my flange looks normal), and I'm not 100% happy with it (slight vibration at 100). So this is no surprise to me. I'm going to clock mine and see if it improves.

Same issue? Hopefully clocking it will work. Nothing is ever perfectly balanced so all we can hope to do it get the heavy spots in the drivetrain directly put of sync with each other in hopes of off setting the heavy spots

 

[19COBRA93]

Same issue? Hopefully clocking it will work. Nothing is ever perfectly balanced so all we can hope to do it get the heavy spots in the drivetrain directly put of sync with each other in hopes of off setting the heavy spots

Yes I definitely have a light vibe with the new DSS. I'm also running 4.10's which really increases driveshaft speed compared with otheres. I will re-clock it and see if it changes. I've had good luck doing that in the past with my '03 Cobras and foxes.