rear end vibration after braking rear right axel

[LHRxDeadx]

Originally Posted by hammdo

On mine, I replaced all bushings when I decided to track. I don’t drag anymore but, I would ck the stock knuckle bushings right away — those have been known to cause a vibration. Jack up the rear, grab the tire and rock up/down — should have no play. Any play, take the tire off and inspect the knuckle then the hub.

After that I would ck the diff bushings, cradle, trans mount, engine, trailing arm bushings, upper control arm bushings, and shock tower bushings.

-Don

actually right after ls fest i replaced everything with BMR stuff lower control arm, trailing, toe rod end. new trans mount.

i just checked the cradle bushings this morning looks good engine mounts good.

i will check diff bushings tomorrow i forgot to today and will check the knuckle too

[LHRxDeadx]

Originally Posted by JerTM

Have you had the the runout checked on the rear diff pinion flange?

no i have not

[JerTM]

Originally Posted by LHRxDeadx

no i have not

Something about the flange bolts being loose is bothering me. I had a Yukon with a bent yoke once that was awful around 80 mph. That was a hard one to diagnose for the customer. A ring gear can cause a nasty vibration roughly those speeds as well. To me it sounds like a differentiaI concern. With an oscilloscope a good GM tech should be able to isolate the source. We have access to a nice new device and program at every dealership for just such problems, but not many of us are trained how to use it properly. Find a dealership with a World Class tech and it's a good chance they will locate the source.

[LHRxDeadx]

Originally Posted by JerTM

Something about the flange bolts being loose is bothering me. I had a Yukon with a bent yoke once that was awful around 80 mph. That was a hard one to diagnose for the customer. A ring gear can cause a nasty vibration roughly those speeds as well. To me it sounds like a differentiaI concern. With an oscilloscope a good GM tech should be able to isolate the source. We have access to a nice new device and program at every dealership for just such problems, but not many of us are trained how to use it properly. Find a dealership with a World Class tech and it's a good chance they will locate the source.

differential is what im also leaning to as well. ill be getting a zl1 rear end this winter so i really didn't want to pull this one now and find surprises lol

[qcman]

Originally Posted by JerTM

Something about the flange bolts being loose is bothering me. I had a Yukon with a bent yoke once that was awful around 80 mph. That was a hard one to diagnose for the customer. A ring gear can cause a nasty vibration roughly those speeds as well. To me it sounds like a differentiaI concern. With an oscilloscope a good GM tech should be able to isolate the source. We have access to a nice new device and program at every dealership for just such problems, but not many of us are trained how to use it properly. Find a dealership with a World Class tech and it's a good chance they will locate the source.

I'm going through this myself right now they used the pico meter on my car & it found some tire issues including a bent rear rim but also a vibe that seems to coincide with driveshaft speed or something. I have a report kind of on my bill but it doesn't mean much to me. They basically said replace the rear wheel and have the wheels okay (they were just road forced today) before going further into the car. Basically my floor and steering wheel vibrate when I come onto the car hard at higher speeds (50 & up I'd say)

[JerTM]

Originally Posted by qcman

I'm going through this myself right now they used the pico meter on my car & it found some tire issues including a bent rear rim but also a vibe that seems to coincide with driveshaft speed or something. I have a report kind of on my bill but it doesn't mean much to me. They basically said replace the rear wheel and have the wheels okay (they were just road forced today) before going further into the car. Basically my floor and steering wheel vibrate when I come onto the car hard at higher speeds (50 & up I'd say)

If it's a prop 1 then it's something turning at the speed of the driveshaft. Trans output shaft, driveline, diff pinion. You can e-mailed me a .PDF of the findings and I will take a look at them if you would like. sithdragon@yahoo.com

[JerTM]

Originally Posted by LHRxDeadx

differential is what im also leaning to as well. ill be getting a zl1 rear end this winter so i really didn't want to pull this one now and find surprises lol

I don't blame you at all. But out of curiosity when you take it out would you be willing to break it down and take pictures for us?

[LHRxDeadx]

Originally Posted by qcman

I'm going through this myself right now they used the pico meter on my car & it found some tire issues including a bent rear rim but also a vibe that seems to coincide with driveshaft speed or something. I have a report kind of on my bill but it doesn't mean much to me. They basically said replace the rear wheel and have the wheels okay (they were just road forced today) before going further into the car. Basically my floor and steering wheel vibrate when I come onto the car hard at higher speeds (50 & up I'd say)

i have recently felt it alot more in my steering wheel as well. my tires where road forced balanced 3 times only one has a slight problem but they said nothing that would make the car vibrate as much as its doing it

[LHRxDeadx]

Originally Posted by JerTM

I don't blame you at all. But out of curiosity when you take it out would you be willing to break it down and take pictures for us?

I will for sure. something that i just started to notice is when i take off excessively im starting to hear a clunk like two metal pieces hitting i wonder if its part of my problem because vibration also got worse now

[JerTM]

Originally Posted by LHRxDeadx

I will for sure. something that i just started to notice is when i take off excessively im starting to hear a clunk like two metal pieces hitting i wonder if its part of my problem because vibration also got worse now

We need a list of parts you've replaced in the original post lol. But have you checked the differentiaI bushings?

[LHRxDeadx]

Originally Posted by JerTM

We need a list of parts you've replaced in the original post lol. But have you checked the differentiaI bushings?

yea ill update that. and they look fine but i think you where the one who posted some pictures when they dropped the diff and where bad. one has a small crack in the outside but its hard to tell

[JerTM]

Originally Posted by LHRxDeadx

yea ill update that. and they look fine but i think you where the one who posted some pictures when they dropped the diff and where bad. one has a small crack in the outside but its hard to tell

Thankfully I haven't had a rear diff out of a Camaro, yet lol. Get it in the air and use your hands to push up and down on the front of the differential, there should be minimal to no play in a vertical plane. Out of curiosity, where in Utah are you from?

[LHRxDeadx]

Originally Posted by JerTM

Thankfully I haven't had a rear diff out of a Camaro, yet lol. Get it in the air and use your hands to push up and down on the front of the differential, there should be minimal to no play in a vertical plane. Out of curiosity, where in Utah are you from?

from logan utah what about you

[JerTM]

Originally Posted by LHRxDeadx

from logan utah what about you

Heber, that would explain why I've never seen your car. Sharp ride.