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01-07-2017, 10:01 PM | #70 |
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Aka more than monthly "income" or whatever.
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01-07-2017, 10:30 PM | #71 |
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Drives: '09 E90 M3 - IB
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01-10-2017, 02:31 PM | #72 |
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Diffuser / Aero
Making an effective diffuser on the E92 M3 is a big deal as the rear exhaust and the untertray needs to be flat and the diffuser exit angle/profile needs to be done right. Can't be done with OEM rear exhaust. As important are the side shields to protect the negative pressure. Those side walls have to go all the way to the front axle.
Such system works ONLY if you have the front end sealed with a large splitter. The car is now so low that trailer loading needs special care and running on a dyno requires to take it off. Engine cooling needs special attention, same for differential. We tested this setup a lot (and I mean a lot) with active rear axle mounted travel indicators and this design works quite well. So well that I had to increase spring rates in the rear to not run on bump stops. The result is an insane grip on all fast corners at VIR and RA, see my lap times. The diffuser can be taken off with quick releases and within 15min. Here are some teaser pictures -and as mentioned before- it will be for sale very soon, please be patient with me. The last picture shows an early version. Enjoy!
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01-10-2017, 02:39 PM | #73 |
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I'm curious---does having a big wing plus the monster diffuser in the rear result in a lot of understeer on high speed rounders? How did you balance so much rear downforce in the front? A GT4 splitter [that I see listed in your sig] is not a lot of front aero. Anything else going on up there?
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01-10-2017, 03:11 PM | #74 | |
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The picture below is an old version, the latest version is 4" longer!
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01-10-2017, 07:34 PM | #76 | |
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01-10-2017, 07:47 PM | #77 | |
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Drives: 2011 M3 Jet Black:ZCP, ZCV, ZP
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01-10-2017, 07:58 PM | #78 | |
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However, my car is no way DD anymore and even on the race track like RA I can barely make it to the track down the ramp w/o scratching the diffuser coming from the paddock. And the problem is that I can't reduce the air dam height as it makes the diffuser ineffective (tried that).
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01-10-2017, 08:00 PM | #79 | |
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Stay tuned.
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01-10-2017, 08:01 PM | #80 |
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01-10-2017, 09:21 PM | #81 | |
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Anyway, it all looks very cool. I would love to see that car at Buttonwillow. Would love to see what it's capable of. How much does the car weigh---no fuel, no driver? |
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01-10-2017, 09:44 PM | #82 | |
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weight is 3375 w/o driver and 1/2 tank.
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01-11-2017, 02:48 AM | #83 |
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So front splitter and wing stay mounted. Flat bottom stays mounted. Rear diffuser quick releases. Can side sills also quick release?
What exhausts do work, or does it require custo, bent tube? |
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01-11-2017, 06:35 AM | #84 | |
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Front splitter extension is quick release, flat bottom comes out with 4 nuts and 4 quick release (only OEM bolt locations were utilized). I made a custom exhaust (I basically used OEM rear axle exhaust and cut main chamber off and extended tubing). Car is loud but sound is -combined with DCT and rev matching- totally addictive...
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01-11-2017, 06:42 AM | #85 | ||
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I'll offer up my car as prototype . Denis |
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01-11-2017, 08:04 AM | #86 | |
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great idea and thanks for offering your car! However, we're working very hard right now to fully production develop and industrial engineer the parts we will offer for the E9xM3 chassis. Once done we can talk again. Thank you!
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01-11-2017, 08:18 AM | #87 | ||
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01-11-2017, 09:57 AM | #88 | ||
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