Differential rebuilding service
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I've been thinking I could rebuild differentials, maybe help out some Wibimmer people. I've only done med case differentials but I'm sure I could figure out small and large cases also.
Pricing only for medium case 188 differentials. If you have a VLSD from an ix I can also rebuild the viscous coupling.
Standard, $300: new bearings, shaft seals, o-rings, speed sensor, crush bushing, cover gasket, verify and set gear lash and contact pattern, and a new paint job (black two part epoxy, unless you want something else). With this one I'm not going to open the pumpkin and inspect the clutch packs.
Standard plus, $450: this is everything from above plus all new dust covers, brackets, securing plate, drain plugs, speed sensor hardware, it'll look brand spanking new. Including the stupid expensive securing plate for the speed sensor 62161365817 the thing is like $80 :0
Option 1, $25+cost: Clean and inspect internals, replace clutch packs and dog ears. The clutch disks and dog ears are about $100+shipping from thayermotorsports.com (bimmerdiffs) but if you want me to use something else just let me know or order them yourself and send them to me. There are several options for the number of clutch packs, stock is two packs but you can get three in there without modification. I can also machine the housing for a fourth clutch pack +$50. I can machine custom ramp angles, just let me know what angles you want +$TBD.
Option 2, $100: Change gear ratios, you provide the desired new ring and pinion. This is a little tedious because I will likely have to make a new pinion and carrier shims. The bolts are torque to yield, they will be replaced with new.
Option 3, $20+cost: press in a new differential bushing into the cover, you provide bushing or tell me which one to order.
This is all assuming your diff is in decent shape to start with and hasn't been run dry of oil or sat at the bottom of a lake for 10 years. If I find damage I'll send you pictures and we can work out how you would like to proceed. If the diff is beyond repair and you don't want me to proceed I'll keep $40 for my time and oil disposal and refund you the rest. We should be fine as long as there isn't any crazy gear wear.
Thanks,
Ray
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I would be very interested! I have a medium case 3.15 LSD that got damaged in shipping (dropped on the pinion I think, tons of pinion play) that needs to be rebuilt. I was thinking pretty much the 'standard' option you listed, new bearings/seals and a coat of paint.
I was planning to teach myself to rebuild diffs as I would really like to learn and I need this diff fixed to finish my swap, but I would feel a lot better about having it rebuilt by someone who knows what they're doing.
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In4$
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Cool, sounds like some pretty good interest. I'll look into it over the weekend and come up with a pricing structure for the different options.
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Added pricing to the OP. I'm just guessing on my labor costs, let me know what you think.
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The prices seem just right to me. Diff service is never cheap but with those prices I wouldn't hesitate to make a move on getting diff stuff done. Mine is good for now but when it comes time for rebuild I know who to check with. the price of an accurate indicator and stands is enough to not setup the lash myself.
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I think that pricing looks great, I'd be interested in a medium case 'standard' rebuild in the next month or two.
Out of curiosity, on the standard rebuild, would you check the pinion and carrier bearing preload?
Sounds good, let me know when you're ready. Absolutely, I set the rolling torque for the pinion and the carrier bearings.
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Sounds good, let me know when you're ready. Absolutely, I set the rolling torque for the pinion and the carrier bearings.
Awesome! I'll keep you posted. Any idea what your turn-around time would be?
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I'll order the parts when I'm given money, then for the standard rebuild probably a weekend to disassemble/clean and a weekend to assemble. My work schedule might throw a wrench in things here and there but I should be able to get it back to you fairly quickly.
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Should come up with a super cool way to reuse packaging - some sort of crate. So diffs don’t get exploded by the shipping company
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some sort of crate.
My trunk will be the only crate diffs are getting shipped in by me from now on...
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Im also interested in this. Would you be interested in working out a trade deal and or cash If I were to give you a spare 4.10 VLSD @TehRaydarlover?
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Not really, I already have at least 2 spares somewhere in the garage. ...I guess for the right price I could add another to the pile haha.
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Ray where are you located again?
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Waukesha, WI. I'm actually going to be in MN in two weeks if you would like to meet up in Tomah again.
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