Photo of diff, why not replace the internals?

Swift135 · 06-15-2008, 01:24 AM

Here is a pic I just took from under the rear of my 135i, is there a way of opening up the housing of the diff and replacing the interior components to turn it into a LSD or is the housing (bolted up case) too small to accept a LSD.

jeremyc74 · 06-15-2008, 01:27 AM

As I understand it, the problem isn't the housing, it's the internals themselves. Once they're in they get welded, and it makes them hard to swap.

Kris · 06-15-2008, 08:55 PM

Speaking to the 335 guys, they too said some diffs have the crown gear welded, others have it bolted. I say open it up to check

ML · 06-15-2008, 09:09 PM

There's been a thread on this here. The final consensus was that, like the mid-2007 + 335's, the 135's ring gear is welded to the carrier. Therefore, to make the swap to a LSD, it will require the differential, a new ring gear, the final drive unit and about $4000.

WhiteOne · 06-15-2008, 10:39 PM

Can I open the rearend and replace the diff with a LSD and new ring and pinion gears (from an automatic)?
LSD + ring + pinion + labor = $4000?
How much are the gears?

ML · 06-15-2008, 10:57 PM

http://www.1addicts.com/forums/showt...&highlight=lsd
http://www.1addicts.com/forums/showt...&highlight=lsd

F0Bman · 06-19-2008, 11:37 PM

Contact KAAZ or Turner to see if they have a kit available.

06-15-2008, 01:24 AM	#1
Swift135 Lieutenant 28 Rep 453 Posts Drives: 330d, M3 DCT E92 Join Date: Jan 2008 Location: Brisbane iTrader: (0)	Photo of diff, why not replace the internals? Here is a pic I just took from under the rear of my 135i, is there a way of opening up the housing of the diff and replacing the interior components to turn it into a LSD or is the housing (bolted up case) too small to accept a LSD. Attached Images __________________
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06-15-2008, 01:27 AM	#2
jeremyc74 Banned 79 Rep 5,970 Posts Drives: '08 135i Montego/Terra Join Date: Feb 2008 Location: Evansville, IN iTrader: (0)	As I understand it, the problem isn't the housing, it's the internals themselves. Once they're in they get welded, and it makes them hard to swap.
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06-15-2008, 08:55 PM	#3
Kris Colonel 138 Rep 2,295 Posts Drives: m3 Join Date: Jun 2008 Location: USOFA iTrader: (0)	Speaking to the 335 guys, they too said some diffs have the crown gear welded, others have it bolted. I say open it up to check
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06-15-2008, 09:09 PM	#4
ML Change for a Nickle? 17 Rep 875 Posts Drives: 2006 M3, Mazda truck Join Date: May 2008 Location: Westfield, MA iTrader: (1)	There's been a thread on this here. The final consensus was that, like the mid-2007 + 335's, the 135's ring gear is welded to the carrier. Therefore, to make the swap to a LSD, it will require the differential, a new ring gear, the final drive unit and about $4000. __________________ "I tasted death many times on the river today. Do you want to know what it tasted like? Do you REALLY want to know? Well I'll tell you then: it tasted like BEEF JERKY." - unknown paddler 8/1/09
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06-15-2008, 10:39 PM	#5
WhiteOne Major 37 Rep 1,000 Posts Drives: 2008 AW 135i Join Date: Dec 2007 Location: Alabama iTrader: (0)	Can I open the rearend and replace the diff with a LSD and new ring and pinion gears (from an automatic)? LSD + ring + pinion + labor = $4000? How much are the gears?
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06-15-2008, 10:57 PM	#6
ML Change for a Nickle? 17 Rep 875 Posts Drives: 2006 M3, Mazda truck Join Date: May 2008 Location: Westfield, MA iTrader: (1)	http://www.1addicts.com/forums/showt...&highlight=lsd http://www.1addicts.com/forums/showt...&highlight=lsd __________________ "I tasted death many times on the river today. Do you want to know what it tasted like? Do you REALLY want to know? Well I'll tell you then: it tasted like BEEF JERKY." - unknown paddler 8/1/09
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06-19-2008, 11:37 PM	#7
F0Bman First Lieutenant 3 Rep 309 Posts Drives: Join Date: Apr 2008 iTrader: (0)	Contact KAAZ or Turner to see if they have a kit available. __________________ Fully Restored 1985 Corolla GT-S 1987 328ci SR20DET Drift Car 1989 Honda Civic Si-R Current Project 2002 Corolla CE Daily Driver www.TheTunerSource.com
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