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      02-04-2014, 05:20 PM   #23
drjekl
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Quote:
Originally Posted by dcaron9999 View Post
Sorry to revive an old thread ...

Would a differential and ratio from a 2009 128i manual, work on a 2011 135i manual?

I found a low cost/ low mileage 128i diff, which is hopefully the bolted type. I would like to buy it and get the wavetrac LSD conversion done to it, then installed in my car ...

Would this work, or do I need to continue hunting for a Diff stripped from a 135i automatic DCT?
AFAIK they are totally different diffs, so no.
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      02-04-2014, 07:41 PM   #24
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Wouldn't it be cheaper to buy an aftermarket ring and pinion gear set with an LSD and just run those instead of trying to machine off the carrier from the ring, machining the ring gear and reattaching? Or are there just no aftermarket ring and pinions?
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      02-04-2014, 08:06 PM   #25
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Quote:
Originally Posted by 135iRick View Post
there are there just no aftermarket ring and pinions?
Yep! The 135/335i are special ;-)

dcaron9999 - different final drive.
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      02-05-2014, 02:24 PM   #26
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Well that sucks. You would think all these manufactures that make the LSDs would make the rings and pinions for them too.
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      02-05-2014, 02:32 PM   #27
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For us manual guys, its $2500+ for standard 3.08 ratio , and $3500+ for 3.46 ratio (excluding refundable core charge ranging from $500 to $1500). Then you have to deal with shipping your core back within 30 days or less.

Then add the costs for diff fluid, and labor to get your old diff out, and new one in.

Should have bought a proper M car ... ;-)
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Last edited by dcaron9999; 02-05-2014 at 02:37 PM.
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      02-06-2014, 12:18 PM   #28
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Just found two diffs from 2010 135i automatic cars from a scrap yard in my area. This would mean a 3.46 ratio instead of the 3.08 in my manual 2011 135i, and a bolted diff, for a cheaper conversion.

Would this pumpkin plug'n'play, ie, bolts on directly to my driveshaft and halfshafts on my manual 2011 135i?

Any other caveats to look out for?

I will be soon placing an order for one of these, in order of higest to lowest preference:
1- Quaife,
2- Turner Motorsport 2-clutch LSD,
3- Turner Motorsport 3-clutch LSD,
4- Turner Motorsport 3 clutch LSD with variable ramp angles.
5- Wavetrac
6- OS Giken (special 75W250 OSG fluid is mandatory, which seems like a PITA)

Looking for a diff that will be quiet (for street use), robust (will track the car often), helps my 135i become more predictable on the track, and more predictable during winter conditions (nice-to-have).

Your thoughts?
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      02-06-2014, 01:04 PM   #29
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That pricing is wrong.

$2,574 for a welded 3.08, 2.56 or 2.81 (big body)
$2,249 for a bolted 3.46 (small or big body)

You then add core. $900 used, $1700 new. We pay you $900 when you send me your stock Final Drive.

Shops charge $200-$300 to swap diffs usually.

I have a few 3.46 big bodies in stock if you are interested in a ratio change. I also have 3.08 big bodies in stock. We are a 1 stop shop for all 135/335 diffs - we have sold 100s successfully. :-)


Quote:
Originally Posted by dcaron9999 View Post
For us manual guys, its $2500+ for standard 3.08 ratio , and $3500+ for 3.46 ratio (excluding refundable core charge ranging from $500 to $1500). Then you have to deal with shipping your core back within 30 days or less.

Then add the costs for diff fluid, and labor to get your old diff out, and new one in.

Should have bought a proper M car ... ;-)
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      02-06-2014, 01:06 PM   #30
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Will not fit. The 3.46 auto final drive from a 2010 is physically smaller and will not bolt in. Read my FAQ, it explains everything with pics

Quaife gets my vote.

Quote:
Originally Posted by dcaron9999 View Post
Just found two diffs from 2010 135i automatic cars from a scrap yard in my area. This would mean a 3.46 ratio instead of the 3.08 in my manual 2011 135i, and a bolted diff, for a cheaper conversion.

Would this pumpkin plug'n'play, ie, bolts on directly to my driveshaft and halfshafts on my manual 2011 135i?

Any other caveats to look out for?

I will be soon placing an order for one of these, in order of higest to lowest preference:
1- Quaife,
2- Turner Motorsport 2-clutch LSD,
3- Turner Motorsport 3-clutch LSD,
4- Turner Motorsport 3 clutch LSD with variable ramp angles.
5- Wavetrac
6- OS Giken (special 75W250 OSG fluid is mandatory, which seems like a PITA)

Looking for a diff that will be quiet (for street use), robust (will track the car often), helps my 135i become more predictable on the track, and more predictable during winter conditions (nice-to-have).

Your thoughts?
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      02-06-2014, 01:14 PM   #31
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Quote:
Originally Posted by Mike@VAC View Post
Will not fit. The 3.46 auto final drive from a 2010 is physically smaller and will not bolt in. Read my FAQ, it explains everything with pics Quaife gets my vote.
Thanks Mike. Took a second hard look at that table ... ;-)
just learned that I need a big body.

Any advantages or cost savings if I send you a welded 3.08 big body diff to get it converted to a bolted 3.46 by you guys?

What if Im able to source a "bolted" big body locally, and send it to you for conversion?
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      02-06-2014, 01:20 PM   #32
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Quote:
Originally Posted by Mike@VAC View Post

$2,574 for a welded 3.08, 2.56 or 2.81 (big body)
$2,249 for a bolted 3.46 (small or big body)

You then add core. $900 used, $1700 new. We pay you $900 when you send me your stock Final Drive.

I have a few 3.46 big bodies in stock if you are interested in a ratio change. I also have 3.08 big bodies in stock.
My shop has a big body 3.08 bolted core on his hands. To avoid up front core charges, can I send you that core first, and once you receive it, you would ship a used big body bolted Quaife 3.46 LSD out to my shop?

Just asking ....
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      02-06-2014, 01:27 PM   #33
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Quote:
Originally Posted by dcaron9999
Quote:
Originally Posted by Mike@VAC View Post
Will not fit. The 3.46 auto final drive from a 2010 is physically smaller and will not bolt in. Read my FAQ, it explains everything with pics Quaife gets my vote.
Thanks Mike. Took a second hard look at that table ... ;-)
just learned that I need a big body.

Any advantages or cost savings if I send you a welded 3.08 big body diff to get it converted to a bolted 3.46 by you guys?

What if Im able to source a "bolted" big body locally, and send it to you for conversion?
It's very very hard to find a used bolted big body. Recyclers often mislabel these diffs so you will probably get the wrong one. Ask me how I know ;-)

I have every combination in stock...and the core exchange is an even swap $$$ wise.
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      02-06-2014, 01:40 PM   #34
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Quote:
Originally Posted by Mike@VAC View Post
It's very very hard to find a used bolted big body. Recyclers often mislabel these diffs so you will probably get the wrong one. Ask me how I know ;-)

I have every combination in stock...and the core exchange is an even swap $$$ wise.
How do you know ? ;-)

Made a couple of phone calls, and found two recyclers that have 2007 335i big bodies 3.46 ratio auto diffs still mounted to the cars. I will call them back and ask them for their VIN numbers, to make sure they are within Aug 2006 to August 2007 production dates, as your FAQ so vividly describes ... ;-)

All I would need is to buy your "Quaife - A.T.B. Limited Slip Differential, E87 / E88 1 Series " 10n or 13N, @ $1469USD, correct?
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      02-06-2014, 02:06 PM   #35
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We have a winner! VIN number from recycler works out to Nov 2006, so right in sweet spot (same part number from Aug 2006 to Sept 2007 Production date, as per RealOEM.com). You may want to correct your FAQ table which states August 2007 as end date...

I will pay $500CAD for 3.46 ratio big body bolted diff, get it delivered to my Indi, and place my order for the 10N or 13N Quaife (one way shipping, and no core refund stuff)!
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Last edited by dcaron9999; 02-06-2014 at 02:30 PM.
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      02-06-2014, 02:30 PM   #36
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Quote:
Originally Posted by dcaron9999 View Post
We have a winner! VIN number from recycler works out to Nov 2006, so right in sweet spot (same part number from Aug 2006 to Sept 2007 Production date, as per RealOEM.com). You may want to correct your FAQ table which states August 2007 as end date...

Will pay $500CAD for 3.46 ratio big body bolted diff. Just need to order the 10N or 13N Quaife and pay one way shipping!
The realoem cut off is not 100% accurate. Trust me. For argument's sake, we have handled over 500 of these diffs so we have seen every possible snag ;-)

Do you have someone good to build the diff for you? I can supply whatever you want, I just hope you have a proven diff builder ready if you bring just the parts.
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      02-07-2014, 10:39 AM   #37
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Quote:
Originally Posted by Mike@VAC View Post
The realoem cut off is not 100% accurate. Trust me. For argument's sake, we have handled over 500 of these diffs so we have seen every possible snag ;-)

Do you have someone good to build the diff for you? I can supply whatever you want, I just hope you have a proven diff builder ready if you bring just the parts.
Good point, as I dont fully trust or know of any reputable shops experienced in this kind of conversion surgery here in Quebec, Canada. Im actually in the process of searching for one now.
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      02-07-2014, 10:49 AM   #38
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Quote:
Originally Posted by Mike@VAC View Post
...I have every combination in stock...and the core exchange is an even swap $$$ wise.
So you can do $2,249 for a fully converted/assembled bolted 3.46 Quaife (big body) housing + $900 refundable core? I can then send you my 3.08 core for the $900 refund?

Please PM me link to order this, including cheapest shipping option to Mirabel, Quebec, Canada.

Thanks.
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      04-17-2014, 11:09 AM   #39
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Mike I have a question. Is the differential for a 2009 335ix AWD MT sedan the same as a 2008 335i RWD MT coupe? Mine is the '08 and I know it has a 3.08 welded open differential and I am hoping this one will be a simple full pumpkin swap.

Thanks
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      05-06-2014, 02:43 PM   #40
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Mike - tried to send you a PM but your box is full. Have a question about a Quaife DCT package. Specifically wondering if I already have a Quaife unit, how much would it cost for you to install into housing (assuming I ship to you)? And separately how much would it cost for you do the swap if I drive down to Philly? Assuming in the latter scenario, I can avoid the $900 core charge too since you wouldn't have to ship the diff out and could wait for me to come down.
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