1M with M3 DKG final drive

NTTY · 05-30-2011, 08:21 AM

Hello all,

I was doing some calculation for my 135 and found out that the 1M is using the final drive of the M3 DKG (3.154). What if we can mount the final drive of the M3 with manual gearbox? The ratio is 3.85.

I did the maths for you, here u go (speeds are in km/h):

1M stock:

1M with M3 manual axle ratio

If that modification is possible, it would make the 1M very interesting on a track... but note it is really shorter...

Sorry if this has already been discussed, but I searched and did not find anything.

Cheers.

kumar911 · 05-30-2011, 08:35 AM

This is interesting, thx for posting!

GotM · 05-30-2011, 09:13 AM

I had done some acceleration modeling of the 1M and accidentally used the 3.85 final drive gearing.

The acceleration curve in 1st gear is something else. I think 1st gear traction would be a challenge.

Dan Parker · 05-30-2011, 10:30 AM

My top speed limiter will be removed next week and then tested on a 3 mile straight. I'll have a gps speedo in the car for comparison to the speedometer.

UsualSuspect · 05-30-2011, 10:38 AM

Quote:

Originally Posted by Dan Parker

My top speed limiter will be removed next week and then tested on a 3 mile straight. I'll have a gps speedo in the car for comparison to the speedometer.

Nice, I'd like to see those #s.

M3 Adjuster · 05-30-2011, 11:24 AM

Indeed, acceleration in first gear and probably second would be difficult without simply massive wheelspin. Might need to leave the MDM on to get out of the paddock! But with 60 mph (100kph) just at the top of second, and top of 4th at 115 or so, that sure makes it interesting. That would be some incredible acceleration!

Oh wait, I can hear someone now saying that the reason this wasn't done out of the box is because it would make the 1M faster than the e9x m3 (LOL!!).

It's hard enough to keep the tires under this thing as it is!!!

JJSchmooze · 05-30-2011, 11:28 AM

Quote:

Originally Posted by Dan Parker

My top speed limiter will be removed next week and then tested on a 3 mile straight. I'll have a gps speedo in the car for comparison to the speedometer.

Very excited to see this!

de85275 · 05-30-2011, 03:11 PM

Quote:

Originally Posted by Dan Parker

My top speed limiter will be removed next week and then tested on a 3 mile straight. I'll have a gps speedo in the car for comparison to the speedometer.

How does one get this removed?

clived · 05-30-2011, 03:28 PM

Quote:

Originally Posted by de85275

How does one get this removed?

Via a remap.

Dan Parker · 05-30-2011, 03:31 PM

Data logging for a tuner.

05-30-2011, 08:21 AM	#1
NTTY Second Lieutenant 37 Rep 234 Posts Drives: G30 M550xi Join Date: Jul 2009 Location: Switzerland iTrader: (0)	1M with M3 DKG final drive Hello all, I was doing some calculation for my 135 and found out that the 1M is using the final drive of the M3 DKG (3.154). What if we can mount the final drive of the M3 with manual gearbox? The ratio is 3.85. I did the maths for you, here u go (speeds are in km/h): 1M stock: 1M with M3 manual axle ratio If that modification is possible, it would make the 1M very interesting on a track... but note it is really shorter... Sorry if this has already been discussed, but I searched and did not find anything. Cheers. __________________ 2018 M550i Sepia-Violet Last edited by NTTY; 05-30-2011 at 10:47 AM..
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05-30-2011, 08:35 AM	#2
kumar911 Private First Class 11 Rep 138 Posts Drives: VO 1M & 2014 Cayenne Diesel Join Date: Oct 2010 Location: Toronto iTrader: (0)	This is interesting, thx for posting!
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05-30-2011, 09:13 AM	#3
GotM Second Lieutenant 7 Rep 232 Posts Drives: 2013 Subaru BRZ 6MT Join Date: Oct 2009 Location: Chandler, AZ iTrader: (0)	I had done some acceleration modeling of the 1M and accidentally used the 3.85 final drive gearing. The acceleration curve in 1st gear is something else. I think 1st gear traction would be a challenge. Attached Images __________________ 13 Subaru BRZ, WR Blue, 6M 09 BMW135i, Alpine White, Sport, 6M - sold 99 BMW M roadster, Estoril Blue - sold
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05-30-2011, 10:30 AM	#4
Dan Parker Major 79 Rep 1,421 Posts Drives: 2012 Golf R Join Date: Nov 2010 Location: Georgia iTrader: (0)	My top speed limiter will be removed next week and then tested on a 3 mile straight. I'll have a gps speedo in the car for comparison to the speedometer. __________________ Dan Parker
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05-30-2011, 11:24 AM	#6
M3 Adjuster Banned 7906 Rep 11,785 Posts Drives: 1M, X1 M Sport, E46 325ic Join Date: Mar 2008 Location: Dallas, Tx iTrader: (0)	Indeed, acceleration in first gear and probably second would be difficult without simply massive wheelspin. Might need to leave the MDM on to get out of the paddock! But with 60 mph (100kph) just at the top of second, and top of 4th at 115 or so, that sure makes it interesting. That would be some incredible acceleration! Oh wait, I can hear someone now saying that the reason this wasn't done out of the box is because it would make the 1M faster than the e9x m3 (LOL!!). It's hard enough to keep the tires under this thing as it is!!!
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05-30-2011, 03:31 PM	#10
Dan Parker Major 79 Rep 1,421 Posts Drives: 2012 Golf R Join Date: Nov 2010 Location: Georgia iTrader: (0)	Data logging for a tuner. __________________ Dan Parker
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