Too much carrier bearing movement

[Jordy19892012]

Hey Guys, I wanted to get some opinions on the carrier bearing in my 2019 GT with the MT-82.

I’ve been battling vibrations for the past 15k miles, or so. I mainly feel it around 35mph, and approximately 75mph. At 35mph, I can hear bearing noise.

Today, I had an opportunity to get my car up on a lift and run the car with the wheels up in the air. I took a video of the carrier with the car running at 35mph.

Does this movement seem excessive?

I have considered going with a one-piece driveline in an effort to get rid of my vibration issues I’m having, but have read about one piece drivelines causing more problems.

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[matstng]

Seen these, not sure how well they work.

https://www.americanmuscle.com/must...r-upgrade-street-soft-bushings-frd02a0-s.html

 

[LexLuthr69]

That looked familiar, and sure enough it's what my wife got me this summer. I haven't installed it yet, but I'm hoping it helps w/ my driveline slop. Save more than a few bucks by buying direct:

https://www.jxbperformance.com/prod...eshaft-center-support-bearing-carrier-upgrade

Luke

 

[Jordy19892012]

Seen these, not sure how well they work.

https://www.americanmuscle.com/must...r-upgrade-street-soft-bushings-frd02a0-s.html

I’ll have to consider this as an option. Thank you!

 

[Jordy19892012]

That looked familiar, and sure enough it's what my wife got me this summer. I haven't installed it yet, but I'm hoping it helps w/ my driveline slop. Save more than a few bucks by buying direct:

https://www.jxbperformance.com/prod...eshaft-center-support-bearing-carrier-upgrade

Luke

Luke,

Are you currently experiencing any vibrations on your car?

 

[LexLuthr69]

Ever since I did the BMR differential bushing upgrade, I have noticed significant driveline slop when transitioning between on-power and off-power. I'm hoping the cradle bearing upgrade will make a difference, but I also accept that may not fix my issue.

 

[Jordy19892012]

Ever since I did the BMR differential bushing upgrade, I have noticed significant driveline slop when transitioning between on-power and off-power. I'm hoping the cradle bearing upgrade will make a difference, but I also accept that may not fix my issue.

Hopefully that fixes your issue! These minor problems are such an annoyance. I wish I could just live with it. That would be so much easier

 

[Jordy19892012]

I just noticed some grease splatter from the video I posted. It makes me wonder if my U Joint is going bad. I’ll have to inspect it a little more thoroughly next time my car is up in the air.

 

[17MagMetal]

I just noticed some grease splatter from the video I posted. It makes me wonder if my U Joint is going bad. I’ll have to inspect it a little more thoroughly next time my car is up in the air.

What exactly does the slop feel like? Difficulty getting into gears at speed/heavy throttle? Or can you feel the differential/trans assembly “shuffling” around under the cabin?

 

[Jordy19892012]

What exactly does the slop feel like? Difficulty getting into gears at speed/heavy throttle? Or can you feel the differential/trans assembly “shuffling” around under the cabin?

At 35mph, I can hear bearing noise. I also feel a vibration in the e-brake handle, since I regularly rest my hand there.

I recently noticed my rear view mirror shaking/ blurry at 75mph. Objectively, this part is pretty minor.

Also my steering wheel has a shimmy at freeway speeds. I finally have round tires, with low road force numbers, as well as hubcentric wheels on the car. I’m confident that I can rule out a wheel and tire issue.

 

[WItoTX]

That looked familiar, and sure enough it's what my wife got me this summer. I haven't installed it yet, but I'm hoping it helps w/ my driveline slop. Save more than a few bucks by buying direct:

https://www.jxbperformance.com/prod...eshaft-center-support-bearing-carrier-upgrade

Luke

This is on my list until I get the $$$ for a CF driveshaft.

 

[WItoTX]

At 35mph, I can hear bearing noise. I also feel a vibration in the e-brake handle, since I regularly rest my hand there.

I recently noticed my rear view mirror shaking/ blurry at 75mph. Objectively, this part is pretty minor.

Also my steering wheel has a shimmy at freeway speeds. I finally have round tires, with low road force numbers, as well as hubcentric wheels on the car. I’m confident that I can rule out a wheel and tire issue.

Generally, steering wheel is front end related, seat is rear of car. Not always true, but a decent rule of thumb. I'd look at your end links, wheel bearings, tension links, anything that holds the front wheels in the right spot.

If you rotate your fronts to your rears, or if you're staggered, if you rotate side to side, does the vibration move/change?

 

[Mike Pfeifer]

I’ve never seen a steering wheel shimmy be anything besides something attached directly to the front wheels. As for the amount of movement of that DS bearing, I’d have to compare to some others. It makes some sense that there could be some amount of movement there, otherwise they would not use a rubber damper bushing around it to absorb the vibration. Is it excessive? Not sure.

 

[Jordy19892012]

Generally, steering wheel is front end related, seat is rear of car. Not always true, but a decent rule of thumb. I'd look at your end links, wheel bearings, tension links, anything that holds the front wheels in the right spot.

If you rotate your fronts to your rears, or if you're staggered, if you rotate side to side, does the vibration move/change?

I’m currently running a square setup, and have rotated my tires front to back with no improvement. I re-installed my factory wheels and tires with no improvement either. I recently performed an alignment, everything is tight in my front end. I’ve got approximately 29,000 miles on my car. That’s a great point, thank you for the suggestion.

 

[Jordy19892012]

I’ve never seen a steering wheel shimmy be anything besides something attached directly to the front wheels. As for the amount of movement of that DS bearing, I’d have to compare to some others. It makes some sense that there could be some amount of movement there, otherwise they would not use a rubber damper bushing around it to absorb the vibration. Is it excessive? Not sure.

I couldn’t agree with you more regarding the front end. I’ve read through most of the 300 page forum about the 50mph-70mph shimmy plaguing the earlier S550 mustangs. A few guys had reported a steering wheel shimmy while experiencing driveline issues.

I also agree that the rubber surrounding the carrier looks purposeful to mitigate NVH.

I’m guessing I have a U Joint issue seeing that I have a grease trail on the underside of my car, and it appears that the half of the driveline from the carrier to the diff looks to be shaking.

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