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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 03-26-2012, 05:44 AM   #21
specializedbndt
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did we give up?
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Old 03-26-2012, 12:35 PM   #22
BWOODM3
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I was also very curious to see what the outcome to this post was.
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Old 06-06-2012, 12:11 AM   #23
Tchleung
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trive2: Have you got any further with this? Interestingly enough, it seems the Z4 does not have an AC condenser fan like us. So this one 600w fan is both the engine and ac fan. It would surely be enough cooling for us then coupled with our electric fan up front. Although, in theory, we could eliminate it completely and just run the Z4 fan.
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Old 06-06-2012, 01:09 AM   #24
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I like this idea a lot.
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Old 06-08-2012, 09:07 PM   #25
Nihilation
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Somebody please do this!
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Old 06-09-2012, 07:26 AM   #26
Brian_67
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I'm interested in this mod too! Anybody know what the parasitic load of the mechanical fan is?
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Old 06-10-2012, 08:08 PM   #27
TerraPhantm
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Originally Posted by specializedbndt View Post
did we give up?
I didn't give up - just put the project on the backburner due to other more urgent maintenance requirements and I've been busy with school stuff. I'll try to get to it this summer. I should search junkyards since it looks like the automatic Z4s also came with 600W fans...
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Old 10-10-2012, 03:49 AM   #28
trive2
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I can tell you guys that the plugs for the bloody non-M E46 fan and Z4M fan are different hahaha it's completely screwed me tonight! Not sure about M cars?
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Old 10-12-2012, 01:07 AM   #29
TerraPhantm
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I can tell you guys that the plugs for the bloody non-M E46 fan and Z4M fan are different hahaha it's completely screwed me tonight! Not sure about M cars?
Hmm really? You could probably just splice the existing wires. Or build some sort of an adaptor if you can find the part numbers for the connectors
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Old 10-14-2012, 07:52 PM   #30
trive2
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Hmm really? You could probably just splice the existing wires. Or build some sort of an adaptor if you can find the part numbers for the connectors
The wire on the fan is much beefier than the wire on the connector, so we're going to hunt down a Z4 in a wrecking yard and nick it.
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Old 04-13-2013, 11:51 AM   #31
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Any new updates on this project? I noticed the Z4M came with a 150amp alternator. Thats 30 more amps than the E46 M3.
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Old 05-25-2013, 05:26 PM   #32
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I'm in for updates
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Old 07-19-2013, 06:52 PM   #33
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Any progress with this??
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Mods are truly underway just I'm too lazy to detail them all for now.....
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Old 07-20-2013, 12:17 AM   #34
Tchleung
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Don't think so.... I still really want to try this, but do not have a hole burning in my pocket. Lol. Especially since there is nothing wrong with my system now...
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Old 07-20-2013, 05:47 PM   #35
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I may have dropped the ball on this... A buddy of mine, who lives just around the corner, has a Z4M. I meant to investigate the physical swap, but I only got to the point of taking some rough measurements. At first glance, I'd say the chances of it fitting are not good.

I'm traveling for pretty much the next month, so I won't have a chance to monkey with it in the next 5 weeks. If I can get some photos, I'll get them up here.
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Old 11-09-2013, 09:02 PM   #36
Tchleung
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These are still ridiculously priced...
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Old 05-27-2014, 05:25 AM   #37
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Did anyone tried this in the end?
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Old 05-27-2014, 02:36 PM   #38
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bump...
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Mods: VFE SC Stage 2, SS Ceramic Coated Stepped Headers, S-Pipe, X-Pipe, TMS Subframe Reinforcement, KWV2 Coilovers, TMS Camber Plates, Powerflex RTAB's, Rogue RSM's, ZCP F/R brakes

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