Driveshaft vibration after clutch swap

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04-22-2009, 06:44 PM

#11

mattkoly

2nd Gear Member

Thread Starter

Join Date: Jan 2006

Location: Colorado

Posts: 384

No, i have not had the rear end worked on, i think the gears ar not stock so they had to do a swap at some point before i received the vehicle, but i don't know. What exactly could be going on in there? Loose carrier bearings? worn ring or pinion? CRUSHED crush sleeve?

thanks for all of your input, i will try to keep this updated as i move along.

04-23-2009, 07:21 AM

#12

calfroper_06

4th Gear Member

Join Date: Jul 2008

Location: texas

Posts: 1,175

well if it was fine before the clutch swap then that more than likely isnt yourproplem. Did someone maybe drop you tranny on the tailshaft. Pull your driveshaft and in neutral spin your tailshaft. Also wiggle it side to side and see how much play is in it, theres going to be just alittle but shouldnt be much!!!

04-23-2009, 10:05 AM

#13

grnstang

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Join Date: Jul 2008

Location: Ohio

Posts: 323

Quote:

Originally Posted by Tony71502

By feathered edges do you mean the inner sides of teh wheels are worn? The only major vibration that I had above 80 in my car, and I mean serious enough to shake the steering wheel, was a bad ball joint. My buddy has a bad vibration in his car but that is because his transmission has a bad tailshaft.

But, if your insides of your tires are chewed up, you may have an alignment problem and not a tire balance problem, even though the wearing of the inside of the tires will cause them to become unbalanced. I had to buy adjustable caster/camber plates for my mustang, even with stock front suspension, in order to get it aligned properly, so it would stop chewing up tires that were balanced when they were put on the car.

the outside of my front tires are feathered, meaning uneven wear. At high speeds i my shifter vibrates bad and my clutch pedal. my u joints are new. it bugs the hell out of me i cant race my car like this

04-23-2009, 12:04 PM

#14

mattkoly

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Join Date: Jan 2006

Location: Colorado

Posts: 384

I'll check the tail shaft, but no it wasn't dropped,

Could i have a tranny fluid issue?

04-23-2009, 05:43 PM

#15

AdderMk2

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Join Date: Dec 2005

Location: Lil' Rhody

Posts: 22,376

If you did not have the vibration before.. i would suggest you check your driveshaft bolts one more time

04-23-2009, 06:07 PM

#16

mattkoly

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Join Date: Jan 2006

Location: Colorado

Posts: 384

I am sure that they are tight, when i did the clocking of the driveshaft, I verified they were tight each time.

Thank you for comment.

How about flat spots on tires?

I have nitto 555s and it sat all winter....

04-26-2009, 01:19 AM

#17

lxman1

4th Gear Member

Join Date: Jan 2008

Location: Louisville, Ky.

Posts: 1,326

Mine has done this for years. At about 80 and up there is a very noticeable vibration coming from the rearend. I know that the backlash was set up to the loosest factory spec .012 so that it would have a good deep seat when under power. The gears were installed by a Ford dealer tech. It didn't do it for quite awhile after the install. I wonder if it could be a pinion bearing? Tires were rebalanced when the weld wheels were installed and it wasn't a balance issue. There is no sign of missing weights on the drive shaft.

I guess it could be my 165K mile T-5 a bit worn in the tailshaft as well. It has never been apart.