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BMW 3-Series (E90 E92) Forum
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E90 M3 diff on a 335i?
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11-06-2010, 01:15 PM | #23 |
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11-07-2010, 12:25 AM | #25 |
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SO how much do you think it would cost to do this form A to Z in a shop (Unfortunately I don't time to get my hands dirty)
This open differential is killing me!! especially now since its raining all the time, the car is not fun nor controllable. I need an LSD |
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11-07-2010, 06:45 AM | #27 | |
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My tuner felt it was more a challenge than anything so we weren't expecting to use this as a permanent mod but something just to keep the car going till the OEM diff with Quaife is repaired. Now I have decided not to take it of hehe." 12 hours at a concervative $85/hr is $1000+ for the install. Definately does not sound cheaper. Plus the final drive is very low on the M3 diff, so definately not suitable for an MT (3.09 vs. 3.85), from what I could tell in the thread anyway. |
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11-07-2010, 08:24 AM | #28 | |
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Sorry, I didn't pay close enough attention to who I was replying to...
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11-08-2010, 04:08 AM | #30 |
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Hi marv,
It is hard to give you the cost involved as the labour rates in South Africa are no where close to the US. The first diff I had installed was a 3.85 from the manual. It was quite a noisy diff. Upon research I found there was a replacement oil from BMW that quitened it down. When I exchanged to the 3.15 diff from the DCT I put the new oil and the diff is very quite. All in all I am happy with it.
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08 E90 335i AT RB Turbos -NX Wet Kit - Chiplogic Flash or Procede V5- M3 Diff - AE Exhaust- Forge Dv's - Helix Intercooler - AR DP's - P3 Boost Gauge - Vishnu Meth- Stett Chargepipe and CAI
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11-08-2010, 10:38 AM | #31 | |
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Pictures would be great |
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11-09-2010, 06:24 AM | #33 |
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Not at all. Wheel speed is measured using the ABS sensors so there where zero affects.
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08 E90 335i AT RB Turbos -NX Wet Kit - Chiplogic Flash or Procede V5- M3 Diff - AE Exhaust- Forge Dv's - Helix Intercooler - AR DP's - P3 Boost Gauge - Vishnu Meth- Stett Chargepipe and CAI
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01-17-2013, 07:12 PM | #34 | |
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Georges approach has a benefit over Quaife or Wavetrax By using the M3 diff George was forced to to use the M3 axle shafts which are also stronger. If you are running more power you'll benefit here Question for GeorgeSmooth If I happened on a complete rear M3 subframe with all the bits attached to it would it not be easier just to swap the subframes out and do the drive shaft modification? BOOM DONE or am I celebrating too early |
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01-18-2013, 07:33 AM | #35 | |
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08 E90 335i AT RB Turbos -NX Wet Kit - Chiplogic Flash or Procede V5- M3 Diff - AE Exhaust- Forge Dv's - Helix Intercooler - AR DP's - P3 Boost Gauge - Vishnu Meth- Stett Chargepipe and CAI
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01-18-2013, 08:06 AM | #36 | |
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As I'm interested in all the cool suspension parts of the M3 I think its worth the effort As for the prop I found a company who can make a custom unit built for the higher BHP rates we're running for a reasonable £££ $$$. I will start a new thread if I take on this project. Idnan has advised that the unit I found is over priced so I am still looking |
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01-19-2013, 04:26 PM | #39 |
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The only 'issues' with using a full m3 rear subframe is that the brakes are larger which affect bias and you have to swap to m3 rear shocks. Both of these are an upgrade over the 335i parts so won't be a problem. However I do suggest upgrading the front brakes to avoid bias issues as I told you.
Talking about props, you'll be shocked to see how thin the metal is on the propshafts. We are only talking about 2 or 3mm thick. Mine snapped at the diff joint so I wouldn't really bother with a bespoke one. |
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01-20-2013, 10:12 AM | #40 |
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Idnan, do you have any more details on the driveshaft length yet? Been looking for the length of the modified shaft from center bearing to the transmission, flexdisk-face. Should be something like 670mm...
Thanks, Sky |
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01-20-2013, 10:55 AM | #41 |
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/\ Definitely interested in this! My wife had been persuaded to pay for my driveshaft work for my birthday last week and Im sure she'll 'forget' our arrangement if I dont get my skates on! lol
On a positive note, I had bought by subframe before Christmas with minimal info. I realised id never actually checked the fd ratio of the M3 diff...... phew, fd of 3.15. |
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01-22-2013, 06:32 PM | #42 | |
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I have now bought all my parts for this M3 transplant and in the deal ended up with 2 M3 prop shafts. If i pull off the cuts first time i'll have an M3 prop for sale |
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01-23-2013, 12:04 PM | #43 |
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Hey, thanks for the offer - though its happens I already have 2 driveshafts as well! (the M3 dct one and e38 v8 one that fits the M3 diff)
You could do me a huge favour and measure the length when you get the driveshaft done and are happy with it. Although you have an auto 335i and I've a manual, I can use the difference in length from realOEM between the auto and manual 335i shafts to work out the length I need to make mine! (assuming the diff is the same size in both auto and manual 335i???) |
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