 » Site Navigation | | | | » Recent Threads | | | |  |  |  | |  03-07-2013, 07:45 PM | #1 | | Senior Member Join Date: Jan 2005 Location: Jax, FL Posts: 541 |  Opinion on this LSD
Hi folks, All I have is photos for now. I was informed it's from a Z3 2.8 manual. Just by looking at the photos, what are your thoughts? Thanks!    |  |  | | 03-07-2013, 10:30 PM | #2 | | Senior Member Join Date: Feb 2012 Location: Sacramento, CA Posts: 2,451 |
What does the metal tag to the left of the speed sensor read? Too small for me to see it.  __________________ 
1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top
1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52
1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior
1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior
Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it
1997 318ti Sport - "Huera" - RIP
1995 318ti Active - RIP
1995 318ti Sport - "Tiny" Sold
1994 325i Sedan - "Jade" - Sold
1991 318ic - "Bert" - Sold
1985 635csi sold
1984 533i "Max" Sold
1984 318i sold
BMWCCA #160411
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Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! | | | | | 03-07-2013, 10:38 PM | #3 | | Senior Member Join Date: Jul 2009 Location: Ft Defiance, AZ Posts: 686 |
If its from a 6cyl Z3 as you stated then it should be a Torsen diff, I know plenty of guys who prefer them to a traditional LSD, so if it is a Torsen you're in good shape! __________________ 1999 BMW 318ti
2005 MINI Cooper S
 | | | | | 03-07-2013, 10:42 PM | #4 | | Senior Member Join Date: Feb 2012 Location: Sacramento, CA Posts: 2,451 |
Quote: Originally Posted by teen ti  If its from a 6cyl Z3 as you stated then it should be a Torsen diff, I know plenty of guys who prefer them to a traditional LSD, so if it is a Torsen you're in good shape! | Whats the diff on a Torsen Diff? __________________
1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top
1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52
1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior
1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior
Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it
1997 318ti Sport - "Huera" - RIP
1995 318ti Active - RIP
1995 318ti Sport - "Tiny" Sold
1994 325i Sedan - "Jade" - Sold
1991 318ic - "Bert" - Sold
1985 635csi sold
1984 533i "Max" Sold
1984 318i sold
BMWCCA #160411
SUPPORT 318ti.org! CLICK THE LINK ABOVE!
Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! | | | | | 03-07-2013, 10:48 PM | #5 | | Senior Member Join Date: Jul 2009 Location: Ft Defiance, AZ Posts: 686 |
Instead of me trying to explain it I'll give you this link  http://auto.howstuffworks.com/differential6.htm __________________ 1999 BMW 318ti
2005 MINI Cooper S
| | | | | 03-08-2013, 03:04 AM | #6 | | Senior Member Join Date: Jul 2007 Location: norcal - 94590 Posts: 3,186 |
I have this diff currently installed in my ti with a 3.15 ratio. I would recommend replacing the diff mount bushing with a solid one from an e30. Other than that, I really like it. __________________ James 95 active w/leather interior and sport interior conversion, Vaders, full M-Tech exterior conversion. Now m50 swapped* Eibach sway bars, D2 Coilovers, Depo's w/AE's, blacked-out sides and grills, LeatherZ console and door armrests, 1 series starter button mod, and custom finished Style 5's <--- in this color! Named "Roddy":  *M50 6 cyl. swap with fan delete, S50 cams and chip, AFE stage 2 intake, M3 clutch and 11.5 lb Fidanza flywheel, 3.15LSD, battery relocated to rear and complete custom exhaust. Sweet!  97 318ti sport, Alaska Blue, Contours, coilovers, Dove Vaders and custom black/grey interior named "Max" 95 318ti Active in Cosmos, S50 swap in progress... named "Pit" SUPPORT 318ti.org! CLICK THE LINK ABOVE! Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! | | | | | 03-08-2013, 03:38 AM | #7 | | Senior Member Join Date: Feb 2012 Location: Sacramento, CA Posts: 2,451 |
Quote: Originally Posted by teen ti | Learned something new... Thanks! __________________
1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top
1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52
1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior
1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior
Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it
1997 318ti Sport - "Huera" - RIP
1995 318ti Active - RIP
1995 318ti Sport - "Tiny" Sold
1994 325i Sedan - "Jade" - Sold
1991 318ic - "Bert" - Sold
1985 635csi sold
1984 533i "Max" Sold
1984 318i sold
BMWCCA #160411
SUPPORT 318ti.org! CLICK THE LINK ABOVE!
Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! | | | | | 03-08-2013, 03:46 AM | #8 | | Senior Member Join Date: Jan 2005 Location: Jax, FL Posts: 541 |
well, wish me luck... on its way and hopefully I have it installed next week. | | | | | 03-08-2013, 04:26 PM | #9 | | Senior Member Join Date: Feb 2007 Location: Fl Posts: 1,353 |
+1 on replacing the diff bushing.
You will be very pleased with the new diff. __________________
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| | | | | 03-10-2013, 03:23 AM | #10 | | Senior Member Join Date: Jan 2005 Location: Jax, FL Posts: 541 |
I noticed one of the "fins" is broken off.
I guess now I have to upgrade to a M diff cover.
BimmerBum, do you carry that bushing you recommended?
Thanks | | | | | 03-10-2013, 06:11 AM | #11 | | Senior Member Join Date: Feb 2007 Location: Fl Posts: 1,353 |
Quote: Originally Posted by Shellback I noticed one of the "fins" is broken off.
I guess now I have to upgrade to a M diff cover.
BimmerBum, do you carry that bushing you recommended?
Thanks | I do... I have the M Coupe cover, hardware, and diff oil in stock. The M Coupe cover comes with the bushing installed. Give me a call and I will get you taken care of. 772.215.4069 __________________
SUPPORT 318ti.org! CLICK THE LINK ABOVE!
Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW!
www.BimmerBum.com ALL NEW!
318ti Specific Parts For Sale
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BMWCCA #132203
95 318ti Club Sport
98 318ti Active S50 Swap
| | | | | 03-14-2013, 12:28 AM | #12 | | Senior Member Join Date: Jan 2005 Location: Jax, FL Posts: 541 |
Folks, I could use some help. Diff arrived. I spin one side, and the opposite side turns the opposite direction.  According to my "years" of experience  if one rotates one side and the opposite direction spins the opposite direction, its an open diff. However, when I turn the flange that connects to the driveshaft, both spin in the same direction...  According to the tag, the donor was a 1999 Z3 2.5 5 speed. Diff sticker has 3.15. I do not see an S. I do see a "R" stenciled on the bottom. Also, last 7 digits according to the tag: LF81373. Lastly, can a Torsen diff act like an open if I perform the test I did above? That is, rotate one side and the opposite spins the opposite direction? If I open her up, is there a way I can tell by looking at the guts to see if I have a Torsen? Please let me know as I might have to pack the sucker up and get my $ back  | | | | | 03-14-2013, 12:47 AM | #13 | | Senior Member Join Date: Jul 2009 Location: Ft Defiance, AZ Posts: 686 |
Quote: Originally Posted by Shellback Diff arrived. I spin one side, and the opposite side turns the opposite direction. According to my "years" of experience if one rotates one side and the opposite direction spins the opposite direction, its an open diff. However, when I turn the flange that connects to the driveshaft, both spin in the same direction... Please let me know as I might have to pack the sucker up and get my $ back | Thats precisely what a Torsen does  __________________ 1999 BMW 318ti
2005 MINI Cooper S
| | | | | 03-14-2013, 05:16 AM | #14 | | Senior Member Join Date: Feb 2012 Location: Sacramento, CA Posts: 2,451 |
Good thread. So, are there identifying marks on the Torsen Diffs for identification purposes? Aside from the 6cyl Z3s, is there a info source that can be referenced for other models that these were equipped to? Thanks! __________________
1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top
1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52
1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior
1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior
Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it
1997 318ti Sport - "Huera" - RIP
1995 318ti Active - RIP
1995 318ti Sport - "Tiny" Sold
1994 325i Sedan - "Jade" - Sold
1991 318ic - "Bert" - Sold
1985 635csi sold
1984 533i "Max" Sold
1984 318i sold
BMWCCA #160411
SUPPORT 318ti.org! CLICK THE LINK ABOVE!
Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! | | | | | 03-14-2013, 01:14 PM | #15 | | Senior Member Join Date: Apr 2007 Location: Elizabeth City, NC Posts: 3,877 |
I believe the "R" stencil on the case means it is a Torsen, just like the "S" means a diff is a clutch type. They only came on non-M 6 cylinder Z3s and there have even been owners of Z3s saying they assumed they had a Torsen but then opened it up and it was a clutch type. Edit - Jesse posted a picture in a diff thread that shows open/torsen/clutch and what they look like when you take the cover off. It is pretty easy to see the difference. http://www.318ti.org/forum/showpost....4&postcount=91 __________________ ~Dave~
98 328ti Morea Grun slicktop
11 128i space gray slicktop
13 JGC WK2 Deep Cherry
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Last edited by spidertri; 03-14-2013 at 01:21 PM. | | | | | |
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