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  1. #1
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    Open Differential

    I have been looking through catalogs for replacement parts. I want to find a OEM open differential that is bolted (not welded) like the early production 335s. If it is a good price then a LSD is in my future. If not, I dont think Im going to shell out $4k. Click here to enlarge

    Any help?

  2. #2
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    Shell out 4k why? An LSD plus install should not be that much.

    There should a be part number for the OEM diff, I'll try to find it for you.

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    Yea it costs a ton because I need the aftermarket LSD which I can get for about $1,500 (Quaife) and I need a stock open differential which I found the part number and it was $1,500. Thats $3k, plus labor and taxes. Easily $4k.

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    Click here to enlarge Originally Posted by k726 Click here to enlarge
    Yea it costs a ton because I need the aftermarket LSD which I can get for about $1,500 (Quaife) and I need a stock open differential which I found the part number and it was $1,500. Thats $3k, plus labor and taxes. Easily $4k.
    You mean because of a core charge? What about your current diff?

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    Its welded so its useless for any of these bolt on aftermarket diffs.

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    Click here to enlarge Originally Posted by k726 Click here to enlarge
    Its welded so its useless for any of these bolt on aftermarket diffs.
    I see, so you need a bolted factory diff and then to get an LSD?

    It may help to see if anyone sells a complete diff without a core charge.

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    I did. Its $4k lol. Modbargains has one. I am goign to a junkyard this weekend to see some wrecked bimmers and see if I can get a diff for cheap.

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    Could I just take an M3 diff? Just wondering..... Im not a specialist

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    Click here to enlarge Originally Posted by k726 Click here to enlarge
    Could I just take an M3 diff? Just wondering..... Im not a specialist
    Technically, I don't see why not.

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    http://realoem.com/bmw/showparts.do?...18&hg=33&fg=05

    So I can just buy it? Cheaper than some aftermarket diffs. Something has to be wrong.

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    Click here to enlarge Originally Posted by k726 Click here to enlarge
    So I can just buy it? Cheaper than some aftermarket diffs. Something has to be wrong.
    Nothing is wrong but it is a matter of finding someone who will get it for you at the price without tacking anything on.

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    I have two dealerships, one of which is a Preowned BMW/Benz dealership. I get factory parts at 30% of cost, so if I can just buy an M diff id even buy the whole assembly and just do a full swap, I just have a feeling it isnt that easy.

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    Click here to enlarge Originally Posted by k726 Click here to enlarge
    I have two dealerships, one of which is a Preowned BMW/Benz dealership. I get factory parts at 30% of cost, so if I can just buy an M diff id even buy the whole assembly and just do a full swap, I just have a feeling it isnt that easy.
    George Smooth has done it, might want to talk to him.

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    Well that's why I posted this thread in hopes someone who knows about it can chime in. I know a lot of people who had bolted diffs and could just buy a kit. With a welded stock diff its a lot more $$$. Its do-able but I'm not going to spend that in an e93. This car will be sold in a year or so and I don't want to dump that much cash into a part I'm not going to see come back to me.

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    There is a shop that is able to work on a welded diff. I don't know if you can get a whole pumpkin from them and get a core refund or if you have to send yours to them to be worked on... but supposedly they do a great job at turning a welded diff into an LSD

    I can't remember the name right now though...

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    Click here to enlarge Originally Posted by Brey335i Click here to enlarge
    I can't remember the name right now though...
    I know you didn't intend to be funny but this had me laughing.

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    You can call JE.
    They can replace that welded ring gear, but you need to be local.

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    Sadface. Im going to ask around here Im in Miami, FL

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    the guy that did the m3 diff had to do a custom driveshaft too i believe

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    1 out of 1 members liked this post. Yes Reputation No
    Yea,
    M3 diff don't work.
    Hey OP, if you send your diff to JE, they can swap out the welded gear. Call tomorrow and ask for James or Chris.

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    1 out of 1 members liked this post. Yes Reputation No
    oh... I guess you have to be local to JE... maybe they're the ones I was thinking of

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    I can't have the car sitting for that long, but I will consider it I will call this week when time permits and get pricing and info! Thanks a lot unfor! +reps for you

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    Well you would have to mail them your diff and they can replace the welded ring gear. Not sure the turnaround though.

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    I got a dinan LSD. Install was 4 hours. They send a new pumpkin w/ LSD and take yours. Cost was ~3k total.

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