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370z Driveshaft Melted

Two nights ago...I was driving and went to drop my clutch...and I heard a very bad sound of mechanical things failing and was like . So I towed it to

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Old 07-10-2015, 04:53 PM   #1 (permalink)
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Default 370z Driveshaft Melted

Two nights ago...I was driving and went to drop my clutch...and I heard a very bad sound of mechanical things failing and was like . So I towed it to the car dealership assuming that my transmission or clutch had just failed....

They called me today to tell me that my driveshaft had melted....turns out that my Y-pipe was left disconnected and the exhaust gases had been exposed to the underneath of the car...and the heat from the exhaust melted the driveshaft until its structural integrity was lost, and the driveshaft has literally torqued itself apart...

I will take pictures when I get to the dealership.
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Old 07-10-2015, 05:19 PM   #2 (permalink)
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Lol how were you driving around with a leaked exhaust and did not know?

In for pictures though. This is interesting.
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Old 07-10-2015, 05:21 PM   #3 (permalink)
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Umm.... Our drive shaft is carbon fiber, isn't it? You know... the stuff they use on the nose cone of nasa space shuttles for re-entry into orbit? That melted?
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Old 07-10-2015, 06:44 PM   #4 (permalink)
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It isn't 100% carbon iirc.
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Old 07-10-2015, 07:04 PM   #5 (permalink)
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Doh!
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Old 07-10-2015, 07:30 PM   #6 (permalink)
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Quote:
Originally Posted by Zbrah View Post
Lol how were you driving around with a leaked exhaust and did not know?

In for pictures though. This is interesting.
Quote:
Originally Posted by dP3NGU1N View Post
Umm.... Our drive shaft is carbon fiber, isn't it? You know... the stuff they use on the nose cone of nasa space shuttles for re-entry into orbit? That melted?
In for pics. Something isn't adding up.
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Old 07-10-2015, 08:56 PM   #7 (permalink)
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Quote:
Originally Posted by dP3NGU1N View Post
Umm.... Our drive shaft is carbon fiber, isn't it? You know... the stuff they use on the nose cone of nasa space shuttles for re-entry into orbit? That melted?
They use carbon-carbon on the space shuttle. Not exactly the same thing.
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Old 07-10-2015, 09:24 PM   #8 (permalink)
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Im curious to see the damage.

But the driveshaft is carbon-fiber composite.
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Old 07-10-2015, 09:52 PM   #9 (permalink)
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ugg,,,, That bill is going to be ugly.
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Old 07-10-2015, 10:37 PM   #10 (permalink)
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Originally Posted by Aviator44 View Post
They use carbon-carbon on the space shuttle. Not exactly the same thing.
True enough, but I don't think our exhaust gases are on the same magnitude as the heat generated from the atmosphere, either. Just hard to believe the shaft can melt from an exhaust leak.
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Old 07-10-2015, 10:46 PM   #11 (permalink)
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carbon-carbon is a ceramic like material while carbon fiber is not. The two materials are are very different with the only real similarity being that they are both carbon based.

As far as the driveshaft is concerned, my guess is that the prolonged heat exposure weakened the resin allowing the driveshaft to twist.
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Old 07-11-2015, 12:08 AM   #12 (permalink)
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This is a first. Curious how this could really happen. The car would have sounded different and gotten someone's attention. pix pix pix.
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Old 07-11-2015, 12:37 AM   #13 (permalink)
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I saw this on AZSH! I hope you somehow got the warranty to cover this.
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Old 07-11-2015, 05:32 AM   #14 (permalink)
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I've always been under the impression that the CF driveshaft construction was very similar to fiberglass - fibers in an epoxy-type matrix. If that is indeed true, I don't think you melted the driveshaft. My guess is that the mechanic was just imprecise in describing the damage. But I'm no expert of CF.

Subbed for more info. I would love to see some pics.
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Old 07-11-2015, 06:44 AM   #15 (permalink)
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It's similar to the material used in the radiator frame support.
Like others have said, i'm surprised OP didn't hear something different about the exhaust tone...
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