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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 12-26-2012, 01:55 PM
Jeep11 Jeep11 is offline
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Location: Gloucestershire
 
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Mein Auto: 318is
Shot diff/axle 318is

Diff on my '91 318is had a slight oil weep noticed at the MOT and advisory issued, being a numpty I ignored it as it seemed just a fine misting. Fast forward five months and approx 5000 miles and car makes a high pitched screech from the rear end at 80 MPH followed by a rapid slowing of the car, a bang, smell of oil and a very loud rumbling noise! So I'm guessing the diff/drive shafts are lunched?

Car drove (roughly) and I limped home. My question now is firstly is it worth fixing a twenty year old car worth approx 500 as I'm guessing a garage will charge an arm and a leg or secondly should I source second hand parts and is it a do..able job for a fairly competent home mechanic with just a jack, axle stand and regular tools? Do I need just the diff or the axle complete inc drive shafts etc. The car seems too good to scrap but I'm not sure if it's economical to repair? Lastly, what should I be paying for a good used axle, diff?

Thanks in advance :-) and apologies for posting this twice (put in DIY also)
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  #2  
Old 12-26-2012, 02:09 PM
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drivinfaster drivinfaster is offline
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Location: in the sticks you piney
 
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sounds like something let loose, but you won't know until you get under and take a peek. axles tend to be cheaper and eaasier, but this is something that you could probably do. a breaker bar will most definately be needed, though, if the diff is coming out...


post up pics if you get a chance...





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Old 12-26-2012, 03:00 PM
Jeep11 Jeep11 is offline
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Thanks for the reply. Guess the first thing is open up the diff and look inside? The outer is covered in oil so I think it either ran dry and fused itself with the heat or shot a seal and then lunched itself, I'm guessing it's the crown wheel or pinnion?? Never done a diff or a complete rear axle before but would like to fix it if I can, put it on ebay as spares or repairs to see what it would make but sticking at 100 far too little for what otherwise is a good straight useable car. Have had a look around for a second hand complete axle or a diff but can't find anything for my car, would others fit ie 316, 323, 325 etc.?
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  #4  
Old 12-26-2012, 06:30 PM
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hornhospital hornhospital is offline
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Mein Auto: 1995 318is / 1993 325is
Quote:
Originally Posted by Jeep11 View Post
I'm guessing it's the crown wheel or pinnion??
If one is done, so is the other one. The contact between the ring and pinion is critical.
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Old 12-26-2012, 06:57 PM
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drivinfaster drivinfaster is offline
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well you would be looking at 2 seperate components. the axles can be replaced without affecting the differential, and visa versa. it's *much* easier to swap out a diff than to rebuild one. lots of specialty angles to measure and get set up and shim, so unless you are familiar with this and can use a dial indicator, a diff is not something that i would put on a diy list for more than 1/2 of the diy'ers i know.

i would try to source one out at either a breakers or ebay or craigslist.

but first you need to inspect if it is an axle or diff that will need to be replaced.




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