Good news for 335s with AUTO Tranny (LSD info inside!!)

BuLoOoSki · 05-08-2009, 06:03 PM

Hey everyone,
I recently sold a couple of my mods to save up for my wedding and honeymoon, but lol that doesn't seem to be happening after I found out what I'm about to tell you guys!
Out of curiosity, I was inquiring about the prices for a Quaife LSD for the 335i and found out from Harold @ HP Autoworks that any Manual Transmission 335 with a production date before Feb/2007 had a bolted diff, but after Feb/2007 production dates they had a welded diff. However for Automatic transmission 335s, cars with production dates between Feb/2007 - Jul/2007 are the only ones that have a welded diff (there were some exceptions though), the rest all had a bolted diff! So I assumed that I had a welded diff since my car is a April 2007 build with an AT tranny and given my history of not being a very lucky person with those sort of things to be an exception and have a bolted diff.

The price for just the Quaife differential (to be installed on a car with a bolted diff) is $1450 and the price for a complete final drive unit (to be installed on a car with a welded diff) is $3750

So the only way to be definitely sure what diff I had, I needed to get the part numbers on the final drive, and since I'm on the east coast and HP Autoworks are on the opposite side of the country, Harold recommended I go to one of the best shops in the nation that specializes in BMW Differentials, Diffsonline. Their website is www.diffsonline.com and the guy who works their is called Dan. They're located in Winchester, MA about 45-60mins from Boston. And after reading about them, apparently they do one of the best jobs with differentials on BMWs.

So I called Dan and he confirmed that he is 100% sure that ALL BMW 335is with an AUTO transmission have a BOLTED Diff, and that its only the manual transmission 335is that some had a welded diff. And we confirmed that by actually getting the part numbers from my car's final drive and I do have a bolted diff!!

He said that he have sold more than 60 Quaife differentials for the Auto 335i and they all had a bolted diff, some of them to local people, some to people from NH and even some shipped internationally.

So anyone with an Auto 335i thinking of getting an LSD and worried that you have a welded diff, then no worries anymore!!
The diff goes for $1450 and its about 7hrs of labor @ $95/hr and then with all the seals and oil and that stuff your looking at $2200. It might seem expensive but people are spending $1500 on an exhaust or even more than $2000 for those who got the Eisenhaus/Super Sprint which barely give you 5rwhp and a louder sound. However and LSD will completely transform how your car drives, handles, and performs.

I have an appointment set up for the 20th of May and I'll be going for some twisty roads right after the install to do some testing and will come back to report to you guys on how the car now feels. I cant wait

Zeph · 05-08-2009, 06:13 PM

I hate you.

j/k you are lucky, why they weld any diffs. in the 1st place is beyond me.

BuLoOoSki · 05-08-2009, 06:19 PM

i'm honestly not sure, good question though. I'll ask Dan when I see him. BTW, it doesnt hurt to give him a call, you might have a bolted diff

just give him your VIN# and he'll tell you.

Zeph · 05-08-2009, 06:24 PM

6MT. pretty sure they are all welded. 06/2008 or 07/2008 build. I think in their extreme efforts to "keep the M3 on top" they figured people buying manual trannies would be more likely to upgrade...

Craig@SupremePower · 05-08-2009, 06:29 PM

good info...

BuLoOoSki · 05-08-2009, 06:36 PM

Quote:

Originally Posted by Zeph

6MT. pretty sure they are all welded. 06/2008 or 07/2008 build. I think in their extreme efforts to "keep the M3 on top" they figured people buying manual trannies would be more likely to upgrade...

again, couldn't hurt to call

1N54E92 · 05-08-2009, 06:44 PM

Wow, good info. let us know after the install.

RipsE92 · 05-08-2009, 06:47 PM

I think you misunderstood Harold ... he posted almost a year ago that late model autos (after 07/07) were bolted. See link below. Purchased my LSD from Harold, and my build is 09/2007.

http://www.e90post.com/forums/showpo...&postcount=156

BuLoOoSki · 05-08-2009, 06:55 PM

Quote:

Originally Posted by RipsE92

I think you misunderstood Harold ... he posted almost a year ago that late model autos (after 07/07) were bolted. See link below. Purchased my LSD from Harold, and my build is 09/2007.

http://www.e90post.com/forums/showpo...&postcount=156

Yeah I'm aware of that, I didnt miss understand him, but I guess my mistake was not mentioning that its from 02/2007-07/2007 that he said they were welded. But still apparently thats not true, or atleast thats what Dan (who also works with harold) found out because my car is an 04/2007 build and my diff is apparently bolted. BTW I'm not bashing Harold or HP Autoworks, you learn something everyday and now it appears that all Auto tranny 335s have a bolted diff and only Manual tranny 335s with production dates before March 2007 had a bolted diff.

BuLoOoSki · 05-08-2009, 07:05 PM

Quote:

Originally Posted by RipsE92

I think you misunderstood Harold ... he posted almost a year ago that late model autos (after 07/07) were bolted. See link below. Purchased my LSD from Harold, and my build is 09/2007.

http://www.e90post.com/forums/showpo...&postcount=156

edited the first post

veightkiller · 05-08-2009, 07:45 PM

Great info!

Bimmer335i07 · 05-08-2009, 10:11 PM

For once, something good came out of owning an AT.

BuLoOoSki · 05-08-2009, 10:26 PM

Quote:

Originally Posted by Bimmer335i07

For once, something good came out of owning an AT.

actually for the 335 i think we have an advantage in most of the things over the MT guys, no need for the cdv mod, no need for short shifter kit, easier to launch with tuned 335 producing 370rwtq+, and now the LSD option

lpphreakx06 · 05-08-2009, 11:02 PM

AT crew.

Ville · 05-09-2009, 01:23 AM

hi guys,

my car ( 03/07 AT 335 ) has the bolted diff...and it's about 3hrs work not 7hrs!!! My friend worked on my car for 6hrs but he did AR DP's + Quaife + oil change + brake fluids

BuLoOoSki · 05-09-2009, 01:29 AM

ummm thanks for letting me know, Harold @ Hp autoworks told me that its a 7-8hr job, so did Dan @ Diffsonline, and so did the guys at Dent Sport Garage.

You sure you didnt do a pumpkin swap?? because when i asked them how long it would take to swap the final drive (pumpkin) they said 2hrs. But I'll look into it

Mahhvinn · 05-09-2009, 03:10 AM

thanks for the info!

Ville · 05-09-2009, 04:47 AM

Quote:

Originally Posted by BuLoOoSki

ummm thanks for letting me know, Harold @ Hp autoworks told me that its a 7-8hr job, so did Dan @ Diffsonline, and so did the guys at Dent Sport Garage.

You sure you didnt do a pumpkin swap?? because when i asked them how long it would take to swap the final drive (pumpkin) they said 2hrs. But I'll look into it

Yes I'm sure! My guy used air-tools and his opion was that the swap could be done even faster if you "work harder"... he dropped the exhaust down ( about 10 bolts, 5 min ) disconnect the driveshafts ( if I remember correctly 8 bolts/side 10 min) take some sort of a lift or a jack under the diffhousing and unbolt it ( again if I remember correctly 4 bigger bolts, all easy to reach even with air-tools, 15min) now u have the diffhousing resting on your lift, just unbolt the cover carefully and let the oil run out ( 10 min ) pull the old seals out ( 5 min ) next u need to unlock the locating rings, one on each side, they are quite "strong" so u need bigger pliers ( 10 min ) u are about ready to pull out your old open-diff...once done just swap the crown-wheel to your Quaife-unit ( 10 min ) and do everything in reverse order and you are done!!!

So 3hrs should be totally enough!!! The procedure above is just to give an idea what u need to do...but if others say it takes 7 hrs guess it takes 7hrs then

BuLoOoSki · 05-09-2009, 05:05 AM

ummm interesting, thanks for the info

I'll speak to Dan about that.

SoYank · 05-09-2009, 05:49 AM

I had a LSD installed in April and it took 2½ hours at Kevin Birds Garage outside of London. They initially said it would take about four hours but that included the retrofit on the bench. They had the pumpkin waiting before I got there.

thegeneral101 · 05-09-2009, 07:33 AM

Quote:

Originally Posted by SoYank

I had a LSD installed in April and it took 2½ hours at Kevin Birds Garage outside of London. They initially said it would take about four hours but that included the retrofit on the bench. They had the pumpkin waiting before I got there.

thats a really quick install

Zeph · 05-09-2009, 11:39 AM

I have seen alot of mechanics work who charge by the hour. They tend to spend alot of time thinking about what to do and analyzing the best way to do it. Couple smoke breaks, maybe a phone call or 2, and some coffee/coke. They usually do a good job and are very thorough, not knocking them. Just saying they don't get in a hurry and break much of a sweat

Go watch a mechanic do a job (like at a dealership) where it is a set amount of hours. They will do "2 hour" jobs in like 30 minutes.

05-08-2009, 06:03 PM	#1
BuLoOoSki Colonel 749 Rep 2,108 Posts Drives: 2015 BMW M3 Join Date: Oct 2007 Location: Kuwait iTrader: (9)	Good news for 335s with AUTO Tranny (LSD info inside!!) Hey everyone, I recently sold a couple of my mods to save up for my wedding and honeymoon, but lol that doesn't seem to be happening after I found out what I'm about to tell you guys! Out of curiosity, I was inquiring about the prices for a Quaife LSD for the 335i and found out from Harold @ HP Autoworks that any Manual Transmission 335 with a production date before Feb/2007 had a bolted diff, but after Feb/2007 production dates they had a welded diff. However for Automatic transmission 335s, cars with production dates between Feb/2007 - Jul/2007 are the only ones that have a welded diff (there were some exceptions though), the rest all had a bolted diff! So I assumed that I had a welded diff since my car is a April 2007 build with an AT tranny and given my history of not being a very lucky person with those sort of things to be an exception and have a bolted diff. The price for just the Quaife differential (to be installed on a car with a bolted diff) is $1450 and the price for a complete final drive unit (to be installed on a car with a welded diff) is $3750 So the only way to be definitely sure what diff I had, I needed to get the part numbers on the final drive, and since I'm on the east coast and HP Autoworks are on the opposite side of the country, Harold recommended I go to one of the best shops in the nation that specializes in BMW Differentials, Diffsonline. Their website is www.diffsonline.com and the guy who works their is called Dan. They're located in Winchester, MA about 45-60mins from Boston. And after reading about them, apparently they do one of the best jobs with differentials on BMWs. So I called Dan and he confirmed that he is 100% sure that ALL BMW 335is with an AUTO transmission have a BOLTED Diff, and that its only the manual transmission 335is that some had a welded diff. And we confirmed that by actually getting the part numbers from my car's final drive and I do have a bolted diff!! He said that he have sold more than 60 Quaife differentials for the Auto 335i and they all had a bolted diff, some of them to local people, some to people from NH and even some shipped internationally. So anyone with an Auto 335i thinking of getting an LSD and worried that you have a welded diff, then no worries anymore!! The diff goes for $1450 and its about 7hrs of labor @ $95/hr and then with all the seals and oil and that stuff your looking at $2200. It might seem expensive but people are spending $1500 on an exhaust or even more than $2000 for those who got the Eisenhaus/Super Sprint which barely give you 5rwhp and a louder sound. However and LSD will completely transform how your car drives, handles, and performs. I have an appointment set up for the 20th of May and I'll be going for some twisty roads right after the install to do some testing and will come back to report to you guys on how the car now feels. I cant wait __________________ 2015 BMW F80 M3: Tractive EDC Suspension / Dinan Anti-Roll Bars / GC Camber Plates / KMP Dual Diff Mount / Girodisc Rotors / GT4 Brake Cooling Kit / PTF Flash Tune / Eisenmann Downpipes / CSF Heat Exchanger / BMS Charge Pipes 2007 BMW E92 335i (SOLD): BMS JB4 / Quaife LSD / Riss Racing DPs / Helix Intercooler / BMS Intake / STETT Charge Pipe / Forge DVs Last edited by BuLoOoSki; 05-08-2009 at 07:05 PM..
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05-08-2009, 06:13 PM	#2
Zeph Major 27 Rep 1,410 Posts Drives: 2008 E92 335i 6MT SGM CR/BD Join Date: Jul 2008 Location: Southeast USA iTrader: (0)	I hate you. j/k you are lucky, why they weld any diffs. in the 1st place is beyond me.
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05-08-2009, 06:19 PM	#3
BuLoOoSki Colonel 749 Rep 2,108 Posts Drives: 2015 BMW M3 Join Date: Oct 2007 Location: Kuwait iTrader: (9)	i'm honestly not sure, good question though. I'll ask Dan when I see him. BTW, it doesnt hurt to give him a call, you might have a bolted diff just give him your VIN# and he'll tell you. __________________ 2015 BMW F80 M3: Tractive EDC Suspension / Dinan Anti-Roll Bars / GC Camber Plates / KMP Dual Diff Mount / Girodisc Rotors / GT4 Brake Cooling Kit / PTF Flash Tune / Eisenmann Downpipes / CSF Heat Exchanger / BMS Charge Pipes 2007 BMW E92 335i (SOLD): BMS JB4 / Quaife LSD / Riss Racing DPs / Helix Intercooler / BMS Intake / STETT Charge Pipe / Forge DVs
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05-08-2009, 06:24 PM	#4
Zeph Major 27 Rep 1,410 Posts Drives: 2008 E92 335i 6MT SGM CR/BD Join Date: Jul 2008 Location: Southeast USA iTrader: (0)	6MT. pretty sure they are all welded. 06/2008 or 07/2008 build. I think in their extreme efforts to "keep the M3 on top" they figured people buying manual trannies would be more likely to upgrade...
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05-08-2009, 06:29 PM	#5
Craig@SupremePower G.O.A.T.! 1000 Rep 74,998 Posts Drives: '18 GMC Yukon XL Join Date: Mar 2008 Location: New Jersey iTrader: (14)	good info...
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05-08-2009, 06:44 PM	#7
1N54E92 Colonel 81 Rep 2,046 Posts Drives: BSM F30 M-Sport Join Date: Jul 2007 Location: Mid-Atlantic, USA iTrader: (4)	Wow, good info. let us know after the install.
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05-08-2009, 06:47 PM	#8
RipsE92 Second Lieutenant 17 Rep 233 Posts Drives: 2007 335i Coupe Join Date: Jan 2009 Location: Goodyear, Arizona iTrader: (2)	I think you misunderstood Harold ... he posted almost a year ago that late model autos (after 07/07) were bolted. See link below. Purchased my LSD from Harold, and my build is 09/2007. http://www.e90post.com/forums/showpo...&postcount=156
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05-08-2009, 07:45 PM	#11
veightkiller Brigadier General 61 Rep 4,150 Posts Drives: e90 335i Join Date: Dec 2007 Location: Vancouver,B.C iTrader: (3)	Great info!
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05-08-2009, 10:11 PM	#12
Bimmer335i07 BK Employee of the month! / Moderator 636 Rep 15,795 Posts Drives: BMW 335i Sedan Join Date: Apr 2007 Location: ... iTrader: (9) Garage List 2007 335i [0.00]	For once, something good came out of owning an AT. __________________ Sponsored by: Pics of the ---> Barbera Beast <--- Martino Auto Concepts (Like them on Facebook MAC) Factory Trained & Authorized by BMW of North America Matt@Camber-Toe (Like them on Facebook Camber-Toe) LuxAngelEyes (Like them on Facebook LuxAngelEyes) LTBMW (Like them on Facebook LTBMW) OEMconcepts (Like them on Facebook OEMconcepts)
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05-08-2009, 11:02 PM	#14
lpphreakx06 Professional Moose Racer 316 Rep 7,509 Posts Drives: SG 335i E92 RIP + 2015 SS M3 Join Date: Jul 2008 Location: Bellevue, Wa iTrader: (25)	AT crew. __________________ Visit my blog anytime: http://www.sfpayments.com BMW Dream Team PNW Chapter, member #1 \|HP Autowerks \| AR DESIGN \| BMW PERFORMANCE \| STOP TECH \| Volk Racing\| AMS \| ARKYM
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05-09-2009, 01:23 AM	#15
Ville Private 1 Rep 59 Posts Drives: 335iA -07 Join Date: Dec 2008 Location: Aberdeen / Turku iTrader: (0)	hi guys, my car ( 03/07 AT 335 ) has the bolted diff...and it's about 3hrs work not 7hrs!!! My friend worked on my car for 6hrs but he did AR DP's + Quaife + oil change + brake fluids
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05-09-2009, 01:29 AM	#16
BuLoOoSki Colonel 749 Rep 2,108 Posts Drives: 2015 BMW M3 Join Date: Oct 2007 Location: Kuwait iTrader: (9)	ummm thanks for letting me know, Harold @ Hp autoworks told me that its a 7-8hr job, so did Dan @ Diffsonline, and so did the guys at Dent Sport Garage. You sure you didnt do a pumpkin swap?? because when i asked them how long it would take to swap the final drive (pumpkin) they said 2hrs. But I'll look into it __________________ 2015 BMW F80 M3: Tractive EDC Suspension / Dinan Anti-Roll Bars / GC Camber Plates / KMP Dual Diff Mount / Girodisc Rotors / GT4 Brake Cooling Kit / PTF Flash Tune / Eisenmann Downpipes / CSF Heat Exchanger / BMS Charge Pipes 2007 BMW E92 335i (SOLD): BMS JB4 / Quaife LSD / Riss Racing DPs / Helix Intercooler / BMS Intake / STETT Charge Pipe / Forge DVs
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05-09-2009, 03:10 AM	#17
Mahhvinn EUROPROJEKTZ 187 Rep 7,958 Posts Drives: backwards Join Date: Dec 2008 Location: San Jose, CA (Bay Area) iTrader: (15) Garage List 2008 E90 335i [7.00]	thanks for the info!
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05-09-2009, 05:05 AM	#19
BuLoOoSki Colonel 749 Rep 2,108 Posts Drives: 2015 BMW M3 Join Date: Oct 2007 Location: Kuwait iTrader: (9)	ummm interesting, thanks for the info I'll speak to Dan about that. __________________ 2015 BMW F80 M3: Tractive EDC Suspension / Dinan Anti-Roll Bars / GC Camber Plates / KMP Dual Diff Mount / Girodisc Rotors / GT4 Brake Cooling Kit / PTF Flash Tune / Eisenmann Downpipes / CSF Heat Exchanger / BMS Charge Pipes 2007 BMW E92 335i (SOLD): BMS JB4 / Quaife LSD / Riss Racing DPs / Helix Intercooler / BMS Intake / STETT Charge Pipe / Forge DVs
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05-09-2009, 05:49 AM	#20
SoYank Major General 571 Rep 7,519 Posts Drives: 2009 E90 335i MT Join Date: Mar 2006 Location: Vinton, Virginia iTrader: (1) Garage List 2009 BMW E90 335i S ... [9.00]	I had a LSD installed in April and it took 2½ hours at Kevin Birds Garage outside of London. They initially said it would take about four hours but that included the retrofit on the bench. They had the pumpkin waiting before I got there.
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05-09-2009, 11:39 AM	#22
Zeph Major 27 Rep 1,410 Posts Drives: 2008 E92 335i 6MT SGM CR/BD Join Date: Jul 2008 Location: Southeast USA iTrader: (0)	I have seen alot of mechanics work who charge by the hour. They tend to spend alot of time thinking about what to do and analyzing the best way to do it. Couple smoke breaks, maybe a phone call or 2, and some coffee/coke. They usually do a good job and are very thorough, not knocking them. Just saying they don't get in a hurry and break much of a sweat Go watch a mechanic do a job (like at a dealership) where it is a set amount of hours. They will do "2 hour" jobs in like 30 minutes.
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