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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 04-16-2009, 05:26 PM   #1
JohnBlaze
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diff output flange question

I recently bought a 3.38 from someone here on the boards, and when I spin the output flanges on it one side is much tougher to spin then the other. Both output flange sides are tougher to spin then the 2.93 and 3.46 diff I also have.

Spinning the input flanges on all three diffs is similar.

is there a problem or is this normal? Does anyone know what I'm talking about?
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Old 04-16-2009, 10:20 PM   #2
Chris-TK
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The output flanges might not be secured properly on the new diff if the previous owner had to switch output flanges. Make sure there is oil in the diff and that both outputs are properly secured and that the gearing teeth are meshing properly.
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Old 04-17-2009, 07:45 AM   #3
drivrswntd
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Quote:
Originally Posted by ChrisTKHarris View Post
The output flanges might not be secured properly on the new diff if the previous owner had to switch output flanges. Make sure there is oil in the diff and that both outputs are properly secured and that the gearing teeth are meshing properly.
Yup,

I remember when I just did my diff swap that if the output flanges are not pressed in all the way, they will be hard to turn and not want to move. It doesnt take much either, just a little bit of the way out and it does that. The second they are pushed back in all the way, free and smooth as butter.
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