E46Fanatics - View Single Post - rear limited slip diff in an XI
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Old 02-02-2011, 09:11 AM   #18
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Join Date: Aug 2010
Location: Englewood, CO
Posts: 25
My Ride: 325Xi
Originally Posted by Mark M View Post
Ok....here are the simple observations from the test of the NV124 case on my workbench.

- Spinning input shaft by hand.....both output shafts rotate
- Spinning input shaft by hand and holding rear output shaft stationary.....front output shaft rotates.
- Spinning input shaft by hand and holding front output shaft stationary.....rear output shaft rotates.

Caveat....these tests were done with spinning by hand, which does not simulate rear world forces transmitted into the driveline.

Thus, my conclusion, you can NEVER make an XI into a rear wheel drive by simply disconnecting front driveshaft. It will just send all the power to the front output shaft and spin endlessly without putting power to the rear.
Like I said, its a open differential. Which is why the awd system on the XI sucks ass. Without DSC turned on, you have nothing to prevent all the torque being transfered to the tire with no traction. There is another thread where someone removed the front drive shaft and couldnt move his car if you need further proof.

2002 325Xi

2003 F250 Super Duty

2013 Volt

Last edited by sbiggi; 02-02-2011 at 09:16 AM.
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