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nuts4bmw · 01-04-2009, 11:02 AM

OK, don't laugh, but here is maybe a dumb question: How can you tell what type of diff. is installed on your car, be it limited slip and or it's ratio?

Is it stamped on the diff. casing somewhere or do you have to pull it apart?

**Blackice** · 01-04-2009, 11:26 AM

There should be a Metal tag on the bottom of it. On My 318is it has 410 stamped on it....For 4:10 open. If it has a S before the numbers to is a LSD.

If you can get under your car you should be able to see it. You might need a scottbright pad to clean it up.

dc42004 · 01-04-2009, 01:12 PM

in the case that the stamped plate is rusted and smudged:

1. secure front wheel to prevent rolling.
2. jack up both the back wheels.
3. put the car in any gear.
4. release e-brake
5. try rotating either rear wheel.

If the rear wheel rotate freely and the other rear wheel rotate in opposite direction, it's open diff.

If the rear wheel will not rotate.

u get an LSD.

Shocka · 01-04-2009, 03:15 PM

good tip dc

nuts4bmw · 01-04-2009, 04:31 PM

Thanks guys!

Art

Shocka · 01-04-2009, 05:26 PM

did u try it yet? what have u in the back?

nuts4bmw · 01-04-2009, 11:43 PM

are you kidding? There's 2 feet of snow in my driveway1

twinpac · 01-11-2009, 06:00 PM

hmm may i suggest the burnout test? if its slippery out go for a drive and get em spinnin if both wheels spin sweet its got lsd. lol

nuts4bmw · 01-12-2009, 01:26 AM

OK the cat is out of the bag....I did the burn out test in the snow. Only one wheel spinning....I was quite disappointed

01-04-2009, 11:02 AM	#1 (permalink)
nuts4bmw Senior Member Name: Art Joined: Oct 2008 From: Surrey Posts: 234 iTrader: 0 Thanks: 5 5 Times in 4 Posts nuts4bmw's pictures '95 BMW M540i	Differentials OK, don't laugh, but here is maybe a dumb question: How can you tell what type of diff. is installed on your car, be it limited slip and or it's ratio? Is it stamped on the diff. casing somewhere or do you have to pull it apart?

01-04-2009, 11:26 AM	#2 (permalink)
Blackice Moderator Name: Dave Joined: Oct 2007 From: North Vancouver Posts: 1,088 iTrader: 0 Thanks: 43 47 Times in 46 Posts Blackice's pictures '91 BMW 318i '91 BMW 318IS	There should be a Metal tag on the bottom of it. On My 318is it has 410 stamped on it....For 4:10 open. If it has a S before the numbers to is a LSD. If you can get under your car you should be able to see it. You might need a scottbright pad to clean it up. Attached Thumbnails

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01-04-2009, 01:12 PM	#3 (permalink)
dc42004 Senior Member Joined: Sep 2007 From: Vancouver Posts: 178 iTrader: 0 Thanks: 0 0 Times in 0 Posts dc42004's pictures '91 BMW 318IS	in the case that the stamped plate is rusted and smudged: 1. secure front wheel to prevent rolling. 2. jack up both the back wheels. 3. put the car in any gear. 4. release e-brake 5. try rotating either rear wheel. If the rear wheel rotate freely and the other rear wheel rotate in opposite direction, it's open diff. If the rear wheel will not rotate. u get an LSD.

01-04-2009, 03:15 PM	#4 (permalink)
Shocka Senior Member Joined: Jun 2008 From: Vancouver Posts: 362 iTrader: 0 Thanks: 4 11 Times in 10 Posts	good tip dc

01-04-2009, 04:31 PM	#5 (permalink)
nuts4bmw Senior Member Name: Art Joined: Oct 2008 From: Surrey Posts: 234 iTrader: 0 Thanks: 5 5 Times in 4 Posts nuts4bmw's pictures '95 BMW M540i	Thanks guys! Art

01-04-2009, 05:26 PM	#6 (permalink)
Shocka Senior Member Joined: Jun 2008 From: Vancouver Posts: 362 iTrader: 0 Thanks: 4 11 Times in 10 Posts	did u try it yet? what have u in the back?

01-04-2009, 11:43 PM	#7 (permalink)
nuts4bmw Senior Member Name: Art Joined: Oct 2008 From: Surrey Posts: 234 iTrader: 0 Thanks: 5 5 Times in 4 Posts nuts4bmw's pictures '95 BMW M540i	are you kidding? There's 2 feet of snow in my driveway1

01-11-2009, 06:00 PM	#8 (permalink)
twinpac Member Name: adrian Joined: Dec 2008 From: kelowna Posts: 36 iTrader: 0 Thanks: 0 0 Times in 0 Posts	hmm may i suggest the burnout test? if its slippery out go for a drive and get em spinnin if both wheels spin sweet its got lsd. lol

01-12-2009, 01:26 AM	#9 (permalink)
nuts4bmw Senior Member Name: Art Joined: Oct 2008 From: Surrey Posts: 234 iTrader: 0 Thanks: 5 5 Times in 4 Posts nuts4bmw's pictures '95 BMW M540i	OK the cat is out of the bag....I did the burn out test in the snow. Only one wheel spinning....I was quite disappointed

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