any driveline gurus near GR

[Formula Z]

i have a vibration that i cant figure out. ive replaced the u joints and even had the driveshaft balanced twice. replaced an axle and the bearings last summer, that solved a little of it. i just need someone to drive it and see what they think. i did replace the tranny mount with an energy suspension mount which i know delivers a little more vibration then stock but i truly believe its not it but will be replacing it with oem

[1BADAIR]

whats your pinion angle. I see its lowered but don't see a torque arm

[OIF1VET]

I'll tell ya from personal experience, I had the same tranny mount and had to take it off ten minutes later.. The first mile or so seemed fine, then I picked up such a bad vibration I couldn't go over 30.. Put the stocker back in, vibrations gone.. Put your stocker back in and see if the vibration goes away before you try anything else.. They work fine on some cars, some cars(like mine) not...

[WMCCjames]

Wheels, broken belts in tire, brake rotor...have you looked at those yet?

[97rs4life]

yea when do you notice the vibration, at what speeds, etc

[Formula Z]

all speeds kinda. more when im in 3rd (manually)but every speed kinda. not real bad but i know it should be so much better. tires are newer and ive had them balanced twice because of the vibrations. rotors im unsure about but will need brakes soon so i may replace them or have them turned. will the rear end a s a whole create a vibration?? i notice the front of the diff (pinion?) is leaking a little. a bearing or something there??
any sponsors have a new oem trans mount and if not whats it going to cost me and where?? thanks

[bri2203]

all speeds kinda. more when im in 3rd (manually)but every speed kinda. not real bad but i know it should be so much better. tires are newer and ive had them balanced twice because of the vibrations. rotors im unsure about but will need brakes soon so i may replace them or have them turned. will the rear end a s a whole create a vibration?? i notice the front of the diff (pinion?) is leaking a little. a bearing or something there??
any sponsors have a new oem trans mount and if not whats it going to cost me and where?? thanks

Rotate your tires and see if the vibration changes.
Did the same place balance the wheels? The balancer could be out of calibration.
What kind of tires? I have seen perfect new tires give a small vibration when balance correctly. Usually they were some no name brand tires.

[1BADAIR]

tires can balance perfect but still cause issues. Have them R1H'ed(road force) checked

[97rs4life]

A tire that is not truely round can cause it as well. Sometimes from the factory tires can be not true.

[Formula Z]

i think im going to check my pinion angle like larry mentioned. the car is lowered and i never added the relocation brackets so i think the pinion angle is screwed.

[1BADAIR]

relocation brackets don't really change pinion angle. you would need an adjustable torque arm
relocation brackets change instant center and LCA angle

[Formula Z]

oh oh. well ill check my pinion angle first and see what that says. damn i dont have the cash for a torque arm. thanks larry. is there a cheaper band aid fix until i can get a real torque arm?

[Formula Z]

bump

[97rs4life]

have you tried moving the tires first?

[Formula Z]

the tires have been rotated on a regular basis as they seem to be disappearing quickly. im hard on them and have to keep the ones with more tread on the rear. i also need an oem tranny mount, any ideas??