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06-10-2015, 03:20 AM | #1 |
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M3 Steering rack Retrofit
Has anyone attempted to do the swap? I have a contact here in Germany that can get used M3 steering racks with low miles for around 300 euro. Would the steering rack swap be something worth doing? With my current front suspension mods the car responds very well but having to turn the wheel way past 180* on some corners is annoying. My car doesn't have the active steering stuff, standard hydralic.
P.S. this is my 1000th post!
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06-10-2015, 03:25 AM | #2 | |
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06-10-2015, 03:43 AM | #3 |
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A few people have done the swap over at E90Post and babybmw.net (British forums). I think the problem was that Servotronic does not work after the swap. I'm too lazy to post links.
Congrats on the 1,000th mark. BTW, you coming for our 1Addicts Italy meet?!
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06-10-2015, 04:05 AM | #4 |
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Once again this year, work has gotten in the way. Restricted to 250km radius for the next 2 months. Kills all of my summer plans.
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06-10-2015, 04:23 AM | #5 |
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Oh, that sucks. What a shame.
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06-10-2015, 04:25 AM | #6 |
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They did the same crap last year. Missed out on alot. Hopefully by mid July when this is over, I'll be able to attend more events etc.
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06-10-2015, 04:34 PM | #7 |
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It's been done on baby bmw without issues on a 130i.. Steering rack was taken from an e93 m3. Wonder if this conversion is possible even on the co2 package 1s like mine
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06-10-2015, 05:46 PM | #8 |
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As far as I know there are about 6 threads
2 and now 3 on 1addicts 1 on e90post 1 on n54 boost 1 on babybmw UK forums Summary: yes it works at 90% because you cannot connect the servotronic connection on M3/1m rack, this means under 50km/h the steering is extra hard, after words its is said to be excellent. Servotronic info: the Babybmw OP with 130i in Scotland speculates that a up to 7 V signal can be applied to the Servo connection to modulate assist My googling reveals that e39 forums have actually mapped the signal for their cars and can toggle its settings for their M button
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is Last edited by andrey_gta; 06-11-2015 at 11:41 AM.. |
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06-11-2015, 02:48 AM | #9 |
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I wonder if you just wired in a 5-7 volt power source via a key-on power source (using a resistor and heat sink to step down the voltage) if you could just manually wire that up? Also, I was also told the E92 base model cars do not have the servotronic steering assist.... don't know how true that is. Maybe its a european model thing. Im looking into this because I hate crossing my hands on the track, and after driving an m3 (and never having to do that) I want that in my 1er.
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06-11-2015, 03:11 AM | #10 |
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As far as I know Servotronic was standard on all E9x models except 335i's incl. pre-LCI.
I've got Active Steering on the 135i and I like in the city. However, it's too light at higher speeds even though it's got Servotronic too.
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06-11-2015, 03:27 AM | #11 |
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I need to check if mine has that option. I was told no.. but IDK anymore lol
Edit: checked my VIN on the BMW archive site.. No active steering. So that's a win... but my steering is still WAY too light for my taste. We'll see after I finish the M3 tension arm installation.
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Last edited by Solo_M_Tech; 06-11-2015 at 03:46 AM.. |
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06-11-2015, 11:42 AM | #12 | |
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The signal may need to follow e39 mapping/duration or if someone can read M3 mapping
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is |
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06-11-2015, 12:14 PM | #13 |
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Im doing some research. Talking with an "expert". He knows alot about BMW and ///M and has done a few retrofits.
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06-11-2015, 03:30 PM | #14 | |
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06-11-2015, 05:21 PM | #16 | |
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06-11-2015, 05:37 PM | #17 |
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I'm quite interested in this retrofit as well, would be nice to get a faster rack.
You really want the speed based signal otherwise if you hook up a constant voltage it will max the assist and be way too light. Additonally the m3 has an MDRIVE menu where they can fiddle with the steering assist settings. Funnily enough some people on the M3 forums were asking if they could disable the system by pulling the plug. I'd hate to go to the trouble of retrofitting the servotronic and finding out it sucks. Might be worth looking up BMW WDS (wiring diagram system) and finding out where the servotronic connection goes. Probably wouldn't be too difficult retrofitting a module and wiring for it. I'll look it up later if no one else does.
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06-12-2015, 02:07 AM | #18 |
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I don't know what year, but Active Steering did become an option ont the 1 series, I'd assume when they did the LCI update.
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06-12-2015, 06:12 AM | #19 |
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There's a servotronic thingo retrofit kit listed on realoem; haven't looked into it http://www.realoem.com/bmw/enUS/show...diagId=32_2009
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06-12-2015, 06:28 AM | #20 | |
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Did some digging in WDS.
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Looking at NCS dummy, only the newest JBBF modules have servotronic options/map curves. Would need to have one of those modules to be compatible. Seems like the people who have retrofitted the rack ended up didn't end up bothering with servotronic since it wasn't a big deal: http://www.babybmw.net/forum/viewtopic.php?f=29&t=62766
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06-12-2015, 07:04 AM | #21 | |
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06-12-2015, 08:14 AM | #22 | |
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Are you going to put a knob in the car so you can adjust the steering weight? |
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