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-   -   Rear diff is toasted!!! (http://forum.e46fanatics.com/showthread.php?t=828761)

TX_Bullet 03-10-2011 08:42 AM

Rear diff is toasted!!!
 
Yep heard a sound while driving last night.....left off the gas and had a nasty vibration followed with a metal winding sound.
Looked under the car to see it leaking out the input flange.

Seems like the pinion bearing went out.

So.....will a non XI different fit my car

Kubica 03-10-2011 08:43 AM

Quote:

Originally Posted by TX_Bullet (Post 12905875)
Yep heard a sound while driving last night.....left off the gas and had a nasty vibration followed with a metal winding sound.
Looked under the car to see it leaking out the input flange.

Seems like the pinion bearing went out.

So.....will a non XI different fit my car

Yes.

Do you have an MT or AT?

Kubica 03-10-2011 09:00 AM

If it's manual you will need a diff from another xi. If it's auto, a rear diff from any automatic 325 or 323 will work.

FelizPrim3 03-10-2011 09:35 AM

yeah i experienced that too, but my wheels locked up on the highway and my car spun. i then replaced the diff with a used one. two weeks later when driving i heard a thump in the rear and clanking and vibrations occured. so i replaced it gain with another used one and it vibrates a little when rippin it in second gear

xixixi 03-10-2011 09:38 AM

As far as I know any/all diffs will fit as long as you get the proper gear ratio. Shouldn't have to come from an xi the rear diffs are all the same.

TX_Bullet 03-10-2011 10:42 AM

Excellent I found one local for 200 out of a 04 325i and mine is auto tragic

TX_Bullet 03-10-2011 12:13 PM

........and pulled out. Turning that input flange feels all messed up
http://184.72.239.143/mu/b8faaf99-14df-fea1.jpg

Kubica 03-10-2011 01:24 PM

It was most likely leaking and ran out of fluid. When did you change the fluid last?

TX_Bullet 03-10-2011 07:03 PM

I assure you it wasn't leaking. I changed fluid a month ago and it was very low. Previous didn't seem to keep up with maintenance well.

Fluid I used was Mobil 1 75w90ls

Kubica 03-10-2011 07:49 PM

Quote:

Originally Posted by TX_Bullet (Post 12908529)
I assure you it wasn't leaking. I changed fluid a month ago and it was very low. Previous didn't seem to keep up with maintenance well.

Fluid I used was Mobil 1 75w90ls

Well if it was low before you changed it there had to be a leak.

See if you can figure out what failed- the rear cover unbolts and the output flanges pop off.

TX_Bullet 03-10-2011 09:23 PM

How hard us it to change the gear sets out with these diffs. I was tempted to swap the gear into a 293 diff I got laying around but never did it before

Kubica 03-10-2011 10:52 PM

Quote:

Originally Posted by TX_Bullet (Post 12909058)
How hard us it to change the gear sets out with these diffs. I was tempted to swap the gear into a 293 diff I got laying around but never did it before

It's not easy.

xixixi 03-11-2011 08:34 AM

I swapped all the flanges on my diff. Input/output. Not hard just take your time. Use a punch/welding marker to mark the input flange with the nut. That way you can re tighten the input flange to spec. I put a brutal 4k on my diff since then. I used a shock proof diff fluid that was recommend (name escapes me atm) Blue something iirc

TX_Bullet 03-13-2011 08:04 AM

This incident has given me no more hope with this car. My next worry was the tranny with the little gear light coming on once a month.

So......I sold it for 5k within 3 hours of posting it on Craigslist

My next bimmer will be a e30 and will be a project

Kubica 03-13-2011 11:49 AM

"Hey y'all new xi owner here. I just got a great deal on this car off craigslist. Anyway which sponsor sells the cheapest black grills? I saw a set on eBay. Oh and my transmission light is flashing should I bring it to the dealer?"

I give it two weeks.

TX_Bullet 03-13-2011 01:40 PM

Classic noobs......fortunately it already had black grills. And that tranny should hold up until they decide to swap fluids


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