M Differential

DirtBag335 · 05-21-2008, 01:15 PM

Is the diff that come's in the Z4M the same as the diff in the E46 M3?

DirtBag335 · 05-21-2008, 10:58 PM

Nevermind I figured it out.

Burt Reynolds · 05-22-2008, 09:58 AM

So is it the same?

MMMazing07 · 05-22-2008, 10:03 AM

yea its the same.

3.91 diff = GODLY

DirtBag335 · 05-22-2008, 11:21 AM

Quote:

Originally Posted by MMMazing07

yea its the same.

3.91 diff = GODLY

3.91? Neither come with 3.91 stock, and they are different. I looked it up on RealOEM and the part number's for the diff cases are different.

MMMazing07 · 05-22-2008, 11:40 AM

no i was talking about the dinan 3.91 diff. dont recall the stock diff ratio.

if only i could get my hands on a 3.91

Burt Reynolds · 05-22-2008, 11:51 AM

I agree- the Dinan 3.91 seems interesting. I wonder what the dyno, 1/4 mile, track advantages are. I can do the math on 8% torque increase but it is hard to get what that really means. On my old turbo car, I added over 130ft/lbs of torque at the wheel 1and that was real easy to appreciate. 8%= 15-20ft/lbs of torque at the wheel? Anyone here have it?

DirtBag335 · 05-22-2008, 09:43 PM

I'm getting 4.10's from diffsonline.com. I was originally going to go with 3.91's but I changed my mind. I'm hoping 1st isn't useless with the 4.10's

MMMazing07 · 05-22-2008, 10:01 PM

with the 4.10 1st is really short. but not useless. You can always start in 2nd

05-21-2008, 01:15 PM	#1
DirtBag335 Second Lieutenant 15 Rep 283 Posts Drives: 07 Z4M Join Date: Feb 2007 Location: So Cal iTrader: (2)	M Differential Is the diff that come's in the Z4M the same as the diff in the E46 M3?
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05-21-2008, 10:58 PM	#2
DirtBag335 Second Lieutenant 15 Rep 283 Posts Drives: 07 Z4M Join Date: Feb 2007 Location: So Cal iTrader: (2)	Nevermind I figured it out.
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05-22-2008, 09:58 AM	#3
Burt Reynolds Captain 53 Rep 689 Posts Drives: 2007 M Coupe Join Date: Mar 2008 Location: Windy City iTrader: (0)	So is it the same? __________________ 2007 M Coupe w/NAV/Premium/Extended Leather, Clearbra, DICE, 4.10 BMW Motorsport Polished LSD, Active Autowerke Gen IV Headers, Supersprint Race Exhaust and X-Pipe, ESS Tuned DME, KWV3 Coilovers, Volk RE30, OEM Strut Tower Brace, Short Antenna, JL AMP, JL 10W7, Valentine V1.
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05-22-2008, 10:03 AM	#4
MMMazing07 More than you can afford pal....ferrari 180 Rep 1,471 Posts Drives: Z4M Join Date: Aug 2007 Location: MD iTrader: (0)	yea its the same. 3.91 diff = GODLY
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05-22-2008, 11:40 AM	#6
MMMazing07 More than you can afford pal....ferrari 180 Rep 1,471 Posts Drives: Z4M Join Date: Aug 2007 Location: MD iTrader: (0)	no i was talking about the dinan 3.91 diff. dont recall the stock diff ratio. if only i could get my hands on a 3.91
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05-22-2008, 11:51 AM	#7
Burt Reynolds Captain 53 Rep 689 Posts Drives: 2007 M Coupe Join Date: Mar 2008 Location: Windy City iTrader: (0)	I agree- the Dinan 3.91 seems interesting. I wonder what the dyno, 1/4 mile, track advantages are. I can do the math on 8% torque increase but it is hard to get what that really means. On my old turbo car, I added over 130ft/lbs of torque at the wheel 1and that was real easy to appreciate. 8%= 15-20ft/lbs of torque at the wheel? Anyone here have it? __________________ 2007 M Coupe w/NAV/Premium/Extended Leather, Clearbra, DICE, 4.10 BMW Motorsport Polished LSD, Active Autowerke Gen IV Headers, Supersprint Race Exhaust and X-Pipe, ESS Tuned DME, KWV3 Coilovers, Volk RE30, OEM Strut Tower Brace, Short Antenna, JL AMP, JL 10W7, Valentine V1.
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05-22-2008, 09:43 PM	#8
DirtBag335 Second Lieutenant 15 Rep 283 Posts Drives: 07 Z4M Join Date: Feb 2007 Location: So Cal iTrader: (2)	I'm getting 4.10's from diffsonline.com. I was originally going to go with 3.91's but I changed my mind. I'm hoping 1st isn't useless with the 4.10's
	Appreciate 0 Quote

05-22-2008, 10:01 PM	#9
MMMazing07 More than you can afford pal....ferrari 180 Rep 1,471 Posts Drives: Z4M Join Date: Aug 2007 Location: MD iTrader: (0)	with the 4.10 1st is really short. but not useless. You can always start in 2nd
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