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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 09-09-2004, 11:28 PM   #1 (permalink)
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ok so whats the deal on BMW LSD's? are they known for braking? what parts is making the noise in thier? are they spring or clutch style LSD's.

i changed the oil to a 75/90w mobile synthetic, thought this would cure the problem, it sounds worse now! ghead

do i need to use straight 90? any one have a schematic of the LSD, can i pop the cover off with out any problems to just to take a look? its not a 3rd member is it?

form a previous post i t has a tag on that says "S293 642" ( i will double check it).

worst case scenerio, it busted up prety bad, what do i upgrade to? what other gear in a LSD are offered? that will fit my application? is thier any websites that sell a complete assembly?

thanx all for the help!

ALohas,

Robbie!

(i am putting a full day on the car tommrow, i have other questions i will post)
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Old 09-09-2004, 11:55 PM   #2 (permalink)
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I don't know the solution but I'm having the same issue...
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Old 09-10-2004, 03:14 AM   #3 (permalink)
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typically the pinion bearing will whine or hum.

they're clutch style lsds if i'm not mistaken.
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Old 09-10-2004, 09:50 AM   #4 (permalink)
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correct...also know as Viscous... VLSD...
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Old 09-10-2004, 09:52 AM   #5 (permalink)
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BTW The reason LSD's weard out....people never change the oil in them ghead i suggest changing it with some redline differencial oil and adding redline LSD additive..
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Old 09-10-2004, 10:31 AM   #6 (permalink)
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Well I guess you're not expierencing typical LSD noise... I know some people who have them and compare them to "clunking around" alot. But I do know that I contacted Kaaz a while ago about a LSD upgrade posibility for our cars, and was told they have one for the later case Differentials (Dunno if they changed at all... ?) as well as a kit to convert your lsd to a full 2 way LSD for signifigantly less cost. I hope I helped any. Just check them out, I think they make a very good product.
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Old 09-10-2004, 10:55 AM   #7 (permalink)
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BMP Designs Rear Differentials...
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1995 BMW 540i/6:
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1985 VW Scirocco: Too many mods, money pit*Sold*
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Old 09-10-2004, 11:33 AM   #8 (permalink)
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$1,795.00

thats what i bought the car for almost! yikes!

at leat thier is a bunch og gear ratios to choose from.


the noise is a clunk/thump clunk thump, when turning slowly in foward and reverse at low speeds.

if it is a clucth style LSD that makes sense for the addative to go in. now here is where iam stupid (or ill educated). what addative goes in thier? i assume the oil i put in didnt have any? em i correct (mobile syth 70/90W)? who caries the oil and addative i need? kragen dosent!

thanx all!

Robbie
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Old 09-10-2004, 11:35 AM   #9 (permalink)
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Quote:
Originally posted by BMDubya84@Sep 10 2004, 10:32 AM
BTW The reason LSD's weard out....people never change the oil in them ghead i suggest changing it with some redline differencial oil and adding redline LSD additive..
Redline is the Brand...do a google on them
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1995 BMW 540i/6:
The Calypso Beast Vid 0-70ish
1987 BMW 325es: Face & Butt Lifted/M50tu Swapped*Sold*
1985 VW Scirocco: Too many mods, money pit*Sold*
E34 Plate Filler Wanted!
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