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Had a Scary Moment This Past Weekend- A PSA

This past Sunday I got up early to go an Autocross about 1.5 hours from my house. I loaded up the Monte and got on the road. About an hour in of mostly just cruising up the highway, no screwing around I felt a shimmy in the rear of the car, my tach and speedometer started to climb at the same time. I looked behind me expecting to see a trail of transmission fluid... Instead I saw sparks, and my passenger rear wheel and axle slowly passing me. I pulled off the road to safety. Thankfully traffic was very light and the runaway wheel and axle didn’t contact any other cars. A bad situation went as good as it could have.

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After a call to AAA, they had a flat bed on its way. I was able to run down the Axle and wheel, so that we could push it back into the housing, and get it on the flatbed. I had the car towed to my folks house because it was closer and they have a bit more room to work on it.

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Got the car up in the air and worked on dropping the rear axle.

Illustration for article titled Had a Scary Moment This Past Weekend- A PSA

Now it was time to crack into the diff and find out why my car turned into a goddamned tripod while doing 70 mph.

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So much metal in the oil. It looked like liquid anti-seize.

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Illustration for article titled Had a Scary Moment This Past Weekend- A PSA

The ring and Pinion were surprisingly intact, but the spider gears were incredibly chowdered.

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Illustration for article titled Had a Scary Moment This Past Weekend- A PSA

The spring plate for the clutch was also broken

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And here’s the C-clip that let go and sent my axle out of the tube.

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Now the car sits like this while I wait on my rear end to be rebuilt with some better parts, hopefully I get a call today that the rear has been reassembled with a Torsen diff, 28 spline Moser Axles, a Proform Rear Diff Cover Girdle and a new 3.73 ring and pinion gear.

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In doing some research, an Auburn Posi unit, if the unit wears to an extreme extent, the wear of the clutches allows the side gears to move, and lets the c-clip escape. So, if any of you are running around with 30-40 year old auburn Posi units, you may want to pop the cover and take a look at your posi unit.

I’m just lucky that A: I wasn’t hurt, B: No one else got hurt, C: Short of this poor shock mount which was forced to be a skid plate and the axle failing, there is not any damage to the car.

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Illustration for article titled Had a Scary Moment This Past Weekend- A PSA

This event could have been far worse. Check your LSD’s people.

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