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greendak01
Dodge Dakota
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2/16/2008
16:07:47
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 Subject: front end broke
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Message:
i have a 00 4X4 dakota and i raised the torsion bars about 2 " i was in 4 wheel drive pulling a buddy out of a hole when transmission cracked where the front end mounts to it, it also broke the other front end mount, this is the second time this exact same thing has happened, does anyone know what would cause this to keep happening??
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Josh
Dodge Dakota
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2/16/2008
17:27:16
|  RE: front end broke
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Message:
Your front end mounts to your transmission?!
Or do you mean the front differential cracked where it bolts to the crossmember?
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Walt_Felix
Dodge Dakota
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2/16/2008
18:25:51
|  RE: front end broke
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Message:
Assuming your talking about your front diff, that's actually a common failure. I've seen and heard of it happening dozens of times. The diff housing itself hangs from brackets that it shares with the motor mounts. The failure happens when the driver gets a lot of front wheel spin in a low traction situation and suddenly one of the front tire grabs traction. The aluminum housing of the front diff doesn't take kindly to the sudden spike in torque.
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greendak01
Dodge Dakota
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2/17/2008
01:01:50
| RE: front end broke
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Message:
the front diff has three mounting brackets and one of them mounts to the transmission, but instead of the bracket breaking, the transmission cracked all the way around the bracket, this is the second time its happened, the first time it was in a wheel spin then catch situation, but this time i barely had them spinning, wouldn't it just transfer the power to the other front tire since its an open differential, also i have the torsion bars almost maxed out, do you think this has anything to do with it???
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Justin
Dodge Dakota
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2/17/2008
15:09:31
| RE: front end broke
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Message:
Because of differential action, with one tire planted, the spinning tire will spin at a rate twice as fast as it would otherwise spin.
Here's a for example with the rear: take off from a stop. The right tire loses traction and the left has good grip. Speedometer reads 30. That means spinning tire is doing 60. Speedo reads 50 - tire spins like it's doing 100. The differential is a doubler in that situation.
So you were in an extreme off-road situation with one tire spinning and it caught. Instant shock to cast aluminum that was not designed to handle that kind of stress.
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