Limited-Slip Differential FAQ

sirdaft1 · 05-09-2015, 03:40 PM

Quote:

Originally Posted by MFactory

Thank you for the suggestions/feedback

Where/how can I order shims? My mechanic is in the middle of the swap and it looks like we need shims as the backlash is out of spec. Please PM me as soon as possible.

MFactory · 05-09-2015, 11:00 PM

Replied

sirdaft1 · 05-09-2015, 11:25 PM

Quote:

Originally Posted by MFactory

Replied

Thank you.

MFactory · 05-09-2015, 11:40 PM

For anyone in the same situation, we have our new custom C-Clips available now.

We made these slightly thinner than the stock C-Clips, so backlash can easily be adjusted by adding in some regular shims.

These shims are easy to find/modify by any diff/shim/machine shop

MFactory · 10-28-2015, 03:11 PM

Just bumping this up as it's not a sticky yet

sirdaft1 · 10-28-2015, 06:10 PM

I've now had my M-Factory LSD installed for almost half a year and I absolutely love it. I've tracked the car multiple times (road course) and it completely changes the cornering dynamics. Leaves me with a big grin on my face everything I drive it :-)

davidwarren · 02-25-2016, 02:41 PM

Oil question-
Will a heavier 75w140 be any quieter than 75w90? I will take it to the track maybe once a month during track season, but obviously more street use.

I have solid subframe (Whiteline poly) and solid diff (Mfactory) mounts and get some minimal noise in the cabin. Actually, it is much quieter than when first installed. I presume as all the mating surfaces were broken in.

I am a bit over 500 miles since install, so I am going to do a fluid change. Just wondering if a heavier oil would be any quieter.

MFactory · 02-26-2016, 12:10 AM

It will be quieter, yes.

dreyo27 · 03-11-2016, 02:19 PM

How much does it usually cost to mail you guys the whole pumkin? 07 6 speed, should be a bolted diff. from 95825

davidwarren · 03-11-2016, 02:47 PM

Quote:

Originally Posted by dreyo27

How much does it usually cost to mail you guys the whole pumkin? 07 6 speed, should be a bolted diff. from 95825

I paid about $110 from Louisville.

srbarnes4ever · 03-12-2016, 06:18 PM

Any auto tranny folks have feedback on the LSD? Its not top on my list, but its on my to do list for my 07 E90 auto.....my previous 2 vehicles were 2013 Track Genesis V6 and 07 G35x so this high powered, open diff stuff is officially for the birds!! Why, BMW, why?!?!

davidwarren · 03-12-2016, 07:41 PM

I swapped the fluid from redline 75w90ns to redline 75w140ns. I also used a Dimple plug at the initial install. The Dimple picked up a good amount of metal from break-in, so I would recommend using one of those. Also, the diff is much quieter with new 75w140. If you have solid diff and/or solid subframe bushings, I would recommend 75w140.

05-09-2015, 11:00 PM	#24
MFactory Major 655 Rep 1,441 Posts Drives: E92 M3 Join Date: Feb 2014 Location: San Dimas, CA iTrader: (2)	Replied __________________ - Specialists in Automotive Carbon Composite Technologies. Website: www.ctecarbon.com Official Partners: MFactory Competition Products, Porsche Cup Experience, Ferrari S.p.A, BYD Auto, Honda Racing Corporation, Three Five (555) Motorsport
	Appreciate 0 Quote

05-09-2015, 11:40 PM	#26
MFactory Major 655 Rep 1,441 Posts Drives: E92 M3 Join Date: Feb 2014 Location: San Dimas, CA iTrader: (2)	For anyone in the same situation, we have our new custom C-Clips available now. We made these slightly thinner than the stock C-Clips, so backlash can easily be adjusted by adding in some regular shims. These shims are easy to find/modify by any diff/shim/machine shop
	Appreciate 1 Quote

10-28-2015, 03:11 PM	#27
MFactory Major 655 Rep 1,441 Posts Drives: E92 M3 Join Date: Feb 2014 Location: San Dimas, CA iTrader: (2)	Just bumping this up as it's not a sticky yet __________________ - Specialists in Automotive Carbon Composite Technologies. Website: www.ctecarbon.com Official Partners: MFactory Competition Products, Porsche Cup Experience, Ferrari S.p.A, BYD Auto, Honda Racing Corporation, Three Five (555) Motorsport
	Appreciate 0 Quote

10-28-2015, 06:10 PM	#28
sirdaft1 Brigadier General 2235 Rep 3,351 Posts Drives: F85 X5M Join Date: Feb 2013 Location: Chicago West Burbs iTrader: (9) Garage List 2016 BMW X5M [8.75] 2012 BMW X5 35i (SOLD) [9.67] 1989 BMW 325i Track ... [10.00] 2007 E90 WTCC Wideb ... [8.50]	I've now had my M-Factory LSD installed for almost half a year and I absolutely love it. I've tracked the car multiple times (road course) and it completely changes the cornering dynamics. Leaves me with a big grin on my face everything I drive it :-)
	Appreciate 0 Quote

02-25-2016, 02:41 PM	#29
davidwarren Captain 189 Rep 670 Posts Drives: M8C GC Join Date: Dec 2011 Location: Louisville, ky iTrader: (0)	Oil question- Will a heavier 75w140 be any quieter than 75w90? I will take it to the track maybe once a month during track season, but obviously more street use. I have solid subframe (Whiteline poly) and solid diff (Mfactory) mounts and get some minimal noise in the cabin. Actually, it is much quieter than when first installed. I presume as all the mating surfaces were broken in. I am a bit over 500 miles since install, so I am going to do a fluid change. Just wondering if a heavier oil would be any quieter. __________________ 2010 335i e90 Le Mans Blue/Chestnut Brown \| M-Sport \| 6MT
	Appreciate 0 Quote

02-26-2016, 12:10 AM	#30
MFactory Major 655 Rep 1,441 Posts Drives: E92 M3 Join Date: Feb 2014 Location: San Dimas, CA iTrader: (2)	It will be quieter, yes. __________________ - Specialists in Automotive Carbon Composite Technologies. Website: www.ctecarbon.com Official Partners: MFactory Competition Products, Porsche Cup Experience, Ferrari S.p.A, BYD Auto, Honda Racing Corporation, Three Five (555) Motorsport
	Appreciate 0 Quote

03-11-2016, 02:19 PM	#31
dreyo27 First Lieutenant 93 Rep 322 Posts Drives: 2007 335i e92 Join Date: Aug 2015 Location: Sacramento CA iTrader: (3)	How much does it usually cost to mail you guys the whole pumkin? 07 6 speed, should be a bolted diff. from 95825
	Appreciate 0 Quote

03-12-2016, 06:18 PM	#33
srbarnes4ever Private First Class 26 Rep 199 Posts Drives: 07 335i E90 Sport Join Date: May 2014 Location: Lexington Ky iTrader: (0)	Any auto tranny folks have feedback on the LSD? Its not top on my list, but its on my to do list for my 07 E90 auto.....my previous 2 vehicles were 2013 Track Genesis V6 and 07 G35x so this high powered, open diff stuff is officially for the birds!! Why, BMW, why?!?! __________________ 07 335 E90 - MHD Stage 2+FMIC (Black) 11 X5 - MHD Stage 1+FMIC (Sapphire Black Metallic) 20 M340i X-Drive (Alpine White)
	Appreciate 0 Quote

03-12-2016, 07:41 PM	#34
davidwarren Captain 189 Rep 670 Posts Drives: M8C GC Join Date: Dec 2011 Location: Louisville, ky iTrader: (0)	I swapped the fluid from redline 75w90ns to redline 75w140ns. I also used a Dimple plug at the initial install. The Dimple picked up a good amount of metal from break-in, so I would recommend using one of those. Also, the diff is much quieter with new 75w140. If you have solid diff and/or solid subframe bushings, I would recommend 75w140. __________________ 2010 335i e90 Le Mans Blue/Chestnut Brown \| M-Sport \| 6MT
	Appreciate 0 Quote