Broken drive shaft - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

blsfrs · 01-22-2022, 04:06 PM

Fortunately it failed on the dyno and not on the road. One year old DDS aluminum drive shaft. No warning NVM. Tech said the bolts had worked loose. Hard way to learn a lesson: Check and retorque bolts.

Code Monkey · 01-22-2022, 04:42 PM

Did you reuse nuts and bolts?

Ashikabi · 01-22-2022, 06:16 PM

Use blue locktite

Sent from my ONEPLUS A5010 using Tapatalk

Joon525 · 01-22-2022, 06:19 PM

Damn, what does the underside of the car look like? Any major damage?

stacyu18 · 01-22-2022, 08:54 PM

looks like to me its a bad driveshaft no way loose bolts cause that but where is the carrier bearing at?

humfrz · 01-22-2022, 09:49 PM

I'll go with the "bad driveshaft" theory.

Is that blood all over the floor? -

EAGLE5 · 01-22-2022, 10:34 PM

Yikes! I have a stock driveshaft if for free. You just gotta pay for shipping from California.

demasrv · 01-23-2022, 01:20 AM

Oooof. The red stuff on the floor makes it look like the driveshaft died a horrible bloody death.

How's the underside of the car look?

blsfrs · 01-23-2022, 11:35 AM

First of all, I'm not answering any questions about possible blood on the floor.

There was no damage to the underside of the car. The tuner shut it down as soon as he heard/felt it go.

PTuning already sourced a replacement shaft. Thanks for the offer

It's a one piece DDS aluminum shaft.

Yes, I reused the bolts.

And yes to the Loctite.

I'll add checking driveshaft to my pre-track check list.

soundman98 · 01-23-2022, 12:48 PM

Quote:

Originally Posted by blsfrs

First of all, I'm not answering any questions about possible blood on the floor.

...pending litigation and all that

i'm sure tommy had it coming.

Grady · 01-23-2022, 03:48 PM

I bet when it went the drivers seat got totaled!

FrickingReallySlow · 01-24-2022, 03:49 AM

Quote:

Originally Posted by Code Monkey

Did you reuse nuts and bolts?

Subaru notes these as one time use items but I never understood why, if its not rusty/striped what's the mechanical reason they can't be reused?

Sapphireho · 01-24-2022, 05:56 AM

Quote:

Originally Posted by blsfrs

It's a one piece DDS aluminum shaft.

Looks like a two piece shaft to me!?

Code Monkey · 01-24-2022, 09:31 AM

Quote:

Originally Posted by FrickingReallySlow

Subaru notes these as one time use items but I never understood why, if its not rusty/striped what's the mechanical reason they can't be reused?

Maybe the bolts are TTY?

01-22-2022, 04:06 PM	#1
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,428 Thanks: 2,637 Thanked 1,421 Times in 676 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Broken drive shaft Fortunately it failed on the dyno and not on the road. One year old DDS aluminum drive shaft. No warning NVM. Tech said the bolts had worked loose. Hard way to learn a lesson: Check and retorque bolts. Attached Images

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01-22-2022, 04:42 PM	#2
Code Monkey Senior Member Join Date: Jul 2016 Drives: Subaru BRZ Location: Atlanta, GA Posts: 864 Thanks: 960 Thanked 585 Times in 352 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Did you reuse nuts and bolts?

01-22-2022, 06:16 PM	#3
Ashikabi Senior Member Join Date: Aug 2014 Drives: 2013 FR-S Location: Northwest Iowa Posts: 7,359 Thanks: 454 Thanked 4,549 Times in 2,950 Posts Mentioned: 59 Post(s) Tagged: 5 Thread(s)	Use blue locktite Sent from my ONEPLUS A5010 using Tapatalk

01-22-2022, 06:19 PM	#4
Joon525 Senior Member Join Date: Jun 2016 Drives: 2016 BRZ Location: NJ Posts: 369 Thanks: 55 Thanked 166 Times in 108 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Damn, what does the underside of the car look like? Any major damage?

01-22-2022, 08:54 PM	#5
stacyu18 Member Join Date: Jun 2017 Drives: 2014 subaru brz Location: indiana Posts: 76 Thanks: 4 Thanked 15 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	looks like to me its a bad driveshaft no way loose bolts cause that but where is the carrier bearing at?

01-22-2022, 09:49 PM	#6
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,402 Thanks: 29,782 Thanked 32,802 Times in 16,826 Posts Mentioned: 715 Post(s) Tagged: 2 Thread(s)	I'll go with the "bad driveshaft" theory. Is that blood all over the floor? -

01-23-2022, 11:35 AM	#9
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,428 Thanks: 2,637 Thanked 1,421 Times in 676 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	First of all, I'm not answering any questions about possible blood on the floor. There was no damage to the underside of the car. The tuner shut it down as soon as he heard/felt it go. PTuning already sourced a replacement shaft. Thanks for the offer It's a one piece DDS aluminum shaft. Yes, I reused the bolts. And yes to the Loctite. I'll add checking driveshaft to my pre-track check list.

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