FS: 3.91 REM Polished Ring & Pinion

CFoote · 12-13-2010, 04:11 PM

BIMMERPOST / Classifieds

Asking Price:

None

Item Interest

Hi Everyone,

You might have seen the post a few months ago about Jareds ring and pinion set that he was selling. He has a Z4MC that has a stock 3.62 final drive ratio. I purchased it for my '05 Z4 3.0, unfortunately I found out the final drive ratio on the 3.0 '03-'05 models is 3.07...yikes! Probably a little bit too much of a mod for that car, so I'm putting the ring and pinion set back up for sale.

This is a Timken 3.91 ring and pinion that has been REM polished. This ring and pinion came from a race shop that carefully inspected and polished the set. It is ready to go to a Z4M Roadster or Coupe owner.

As most of you guys know, this is an excellent 'bang for the buck' mod that will give you a great deal more torque to the wheels while still retaining highway driving characteristics.

The REM polishing alone from differential shops is $200.

I paid Jared $650 for the ring and pinion set, and I'd like to get that. I think that's a really fair price given this same setup would go for $900+ if purchased online.

Cash for pickup, Paypal for long distance purchases. Any questions let me know.

Thanks,

Chris

ZStig · 12-13-2010, 04:55 PM

How about my stock M diff + cash? its a less aggressive ratio, but improved over your stock one

Haretakis · 12-13-2010, 06:34 PM

Where are you located?

CFoote · 12-14-2010, 08:42 AM

Quote:

Originally Posted by Haretakis

Where are you located?

I am in the Northeast -- CT.

Chris

CFoote · 12-14-2010, 08:43 AM

Quote:

Originally Posted by Roffle Waffle

How about my stock M diff + cash? its a less aggressive ratio, but improved over your stock one

Thanks but right now I just want to sell this ring and pinion set -- hopefully to a Z4M or E46 M3 owner who will enjoy it

Chris

ZStig · 12-14-2010, 09:40 AM

oh crap, I just realized that if we traded I'd have no diff cover. haha

3002 tii · 12-14-2010, 10:40 AM

so would this basically require the diff to be rebuilt?

CFoote · 12-14-2010, 01:03 PM

Quote:

Originally Posted by Dubbedown

so would this basically require the diff to be rebuilt?

Yes, this is not a complete diff, you would need a shop to install the ring and pinion into your existing differential. Overall its cheaper than buying a completely new differential which would be 2-3k depending upon what you want.

Chris

CFoote · 12-14-2010, 01:05 PM

Quote:

Originally Posted by Roffle Waffle

oh crap, I just realized that if we traded I'd have no diff cover. haha

Good point

fatmatt0116 · 12-16-2010, 01:37 PM

how many hours of labor would I expect for the rebuild?

CFoote · 12-17-2010, 08:31 AM

Quote:

Originally Posted by fatmatt0116

how many hours of labor would I expect for the rebuild?

Rebuilding a diff takes time and skill. I would guess between $800-$1100.

Remember a new diff is $2-$3k for our cars, depending upon what you want (LSD, etc)

Chris

mfanatic325 · 12-22-2010, 01:23 PM

SOLD!!!

CFoote · 12-22-2010, 02:12 PM

Quote:

Originally Posted by mfanatic325

SOLD!!!

Enjoy it, you got a good deal

inTgr8r · 12-22-2010, 02:22 PM

Quote:

Originally Posted by mfanatic325

SOLD!!!

congrats....
If my budget wasn't blown to pieces already, I would have jumped on this myself.

Looking forward to your writeup when you get it done.

mousitch · 12-22-2010, 02:59 PM

whs^ +1000

mfanatic325 · 12-22-2010, 03:39 PM

lol yeah, now that I have headers in, with the tune; this ring and pinion should really help me crap my pants when I'm driving

4.10's would've turned my 1st gear completely useless, so imma go with the 3.91 for now lol.

I'm going to have to wait until after holidays for the "after" dyno's.
I'm going to go back to the same DynaPack I started out with, and I also got a deal on a DynoJet, so it'll be good comparison between different dyno's =]

Starscream · 12-22-2010, 04:08 PM

I have 4.10's and 1st gear is usable

People who claim its not don't have 4.10's

inTgr8r · 12-22-2010, 04:14 PM

Quote:

Originally Posted by Starscream

I have 4.10's and 1st gear is usable

People who claim its not don't have 4.10's

You've had this quite a while now;
do you still feel it's one of the best mods you've done?

Starscream · 12-22-2010, 04:19 PM

Yup

I think the only thing that could top it in terms of feel would be a supercharger,
The car just comes alive in every gear, Esp on the highway, the passing power is insane,

I'm sure 3.91's are a barrel of laughs too but if your going to go through all the trouble of changing gears you might as well go for the 4.10's

This is something I wanted to get right the first time and not wish I had of got the other set,
Its a job I only wanted to do once and I'm glad I only had to do it once, Its not fun,

inTgr8r · 12-22-2010, 04:21 PM

Thanks.
I'm sure you have a write up on it in here somewhere,
but did you rebuild your diff or buy a complete 4.10 diff?

Starscream · 12-22-2010, 04:31 PM

Yeah I have a write up, Just look through my old posts, Wasn't too picture heavy as I just wanted the bloody thing in,
But I did it myself on my back with the car only on jack stands lol, Oh and ALONE lol,
That was a weekend to forget!

I wouldn't say this is a DIY though, setting up gears is a PITA, Its not complicated, its just tedious with constant shimming, assembling, checking, then if its wrong it all comes apart again,
Thankfully my diff needed no shims, I guess because the car was still new, and to date zero whine or issues,

Starscream · 12-22-2010, 04:33 PM

Oh and complete diff's wasn't available when I did mine, You could only buy the gear sets,
Dinan at the time only offered 3.91's as a complete Diff setup, But from memory they were close to $3000 for a diff,

I think now you CAN get 4.10's already setup,
But even a diff swap isn't any picnic!!

12-13-2010, 04:11 PM	#1
CFoote Captain 180 Rep 659 Posts Drives: '22 M5CS, '00 M5, '06 Z4M Join Date: Mar 2010 Location: Northeast iTrader: (1) Garage List 2022 M5CS [0.00] 2001 BMW 740i [0.00] 2006 BMW M Roadster [0.00] 2012 BMW X6 3.5i [0.00] 2006 BMW 325xi [0.00] 2017 BMW 540xi [0.00] 2000 BMW M5 [0.00] 2001 BMW X5 4.4i [0.00]	FS: 3.91 REM Polished Ring & Pinion BIMMERPOST / Classifieds Asking Price: None Item Interest Hi Everyone, You might have seen the post a few months ago about Jareds ring and pinion set that he was selling. He has a Z4MC that has a stock 3.62 final drive ratio. I purchased it for my '05 Z4 3.0, unfortunately I found out the final drive ratio on the 3.0 '03-'05 models is 3.07...yikes! Probably a little bit too much of a mod for that car, so I'm putting the ring and pinion set back up for sale. This is a Timken 3.91 ring and pinion that has been REM polished. This ring and pinion came from a race shop that carefully inspected and polished the set. It is ready to go to a Z4M Roadster or Coupe owner. As most of you guys know, this is an excellent 'bang for the buck' mod that will give you a great deal more torque to the wheels while still retaining highway driving characteristics. The REM polishing alone from differential shops is $200. I paid Jared $650 for the ring and pinion set, and I'd like to get that. I think that's a really fair price given this same setup would go for $900+ if purchased online. Cash for pickup, Paypal for long distance purchases. Any questions let me know. Thanks, Chris __________________ '22 M5CS, '06 Z4M, '01 X5 4.4i, '00 M5, '05 Acura RL, '12 X6 3.5, '01 740, 08 335xi, '17 540xi (yes they all are still with me)
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12-13-2010, 04:55 PM	#2
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	How about my stock M diff + cash? its a less aggressive ratio, but improved over your stock one __________________
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12-13-2010, 06:34 PM	#3
Haretakis Second Lieutenant 7 Rep 257 Posts Drives: 2007 Silver Z4 M Coupe Join Date: Dec 2007 Location: O.C., SoCal iTrader: (3)	Where are you located? __________________ ESS Tuning Software, JVT (Ebay) Headers, AFE Intake, RPI Scoop, ACS Pedals, and ZHP Shift Knob.
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12-14-2010, 09:40 AM	#6
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	oh crap, I just realized that if we traded I'd have no diff cover. haha __________________
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12-14-2010, 10:40 AM	#7
3002 tii Lieutenant General 2283 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.24]	so would this basically require the diff to be rebuilt? __________________ Follow for latest mods
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12-16-2010, 01:37 PM	#10
fatmatt0116 Hooligan 55 Rep 680 Posts Drives: 2014 Porsche Cayenne Turbo S Join Date: Dec 2008 Location: Boston, MA iTrader: (0)	how many hours of labor would I expect for the rebuild? __________________ 2014 Porsche Cayenne Turbo S 2011 X5 5.0 Dinan - SOLD 2007 Imola Red Z4 M Coupe -SOLD 2004 Navy Blue BMW 325Ci
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12-22-2010, 01:23 PM	#12
mfanatic325 ///M-fanatic 193 Rep 3,885 Posts Drives: '01 911 Turbo Join Date: Oct 2007 Location: Cupertino, CA. iTrader: (23)	SOLD!!!
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12-22-2010, 02:59 PM	#15
mousitch Dark Sider 129 Rep 1,779 Posts Drives: 2008 Space Gray Z4MC Join Date: Jan 2010 Location: Missouri iTrader: (11) Garage List 2008 Z4M Coupe [7.50]	whs^ +1000 __________________ [URL=http://imageshack.us/photo/my-images/153/071jt.jpg/] 2008 Space Grey M Coupe-Euro headers-RPI Scoop-Gruppe M CAI-Eisenmann Race Cans-RE X-pipe-ECU Remap with O2 and EGT delete-H&R Sport springs-Zeck CDV delete-Stock Gloss black powder coated wheels-LED Tekarbon Angel Eyes Project-Michelin Super Sports-Hardwired Uniden R7-H&R front and rear spacers-Alarm module added-stereo amp recoded to vert spec settings
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12-22-2010, 03:39 PM	#16
mfanatic325 ///M-fanatic 193 Rep 3,885 Posts Drives: '01 911 Turbo Join Date: Oct 2007 Location: Cupertino, CA. iTrader: (23)	lol yeah, now that I have headers in, with the tune; this ring and pinion should really help me crap my pants when I'm driving 4.10's would've turned my 1st gear completely useless, so imma go with the 3.91 for now lol. I'm going to have to wait until after holidays for the "after" dyno's. I'm going to go back to the same DynaPack I started out with, and I also got a deal on a DynoJet, so it'll be good comparison between different dyno's =]
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12-22-2010, 04:08 PM	#17
Starscream Colonel 135 Rep 2,120 Posts Drives: ///M Roadster + E92 335i 6MT Join Date: Dec 2007 Location: Park Ridge NJ + Windermere FL iTrader: (23)	I have 4.10's and 1st gear is usable People who claim its not don't have 4.10's __________________ Imola Red Roadster
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12-22-2010, 04:19 PM	#19
Starscream Colonel 135 Rep 2,120 Posts Drives: ///M Roadster + E92 335i 6MT Join Date: Dec 2007 Location: Park Ridge NJ + Windermere FL iTrader: (23)	Yup I think the only thing that could top it in terms of feel would be a supercharger, The car just comes alive in every gear, Esp on the highway, the passing power is insane, I'm sure 3.91's are a barrel of laughs too but if your going to go through all the trouble of changing gears you might as well go for the 4.10's This is something I wanted to get right the first time and not wish I had of got the other set, Its a job I only wanted to do once and I'm glad I only had to do it once, Its not fun, __________________ Imola Red Roadster
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12-22-2010, 04:21 PM	#20
inTgr8r Lieutenant General 2432 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	Thanks. I'm sure you have a write up on it in here somewhere, but did you rebuild your diff or buy a complete 4.10 diff? __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold)
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12-22-2010, 04:31 PM	#21
Starscream Colonel 135 Rep 2,120 Posts Drives: ///M Roadster + E92 335i 6MT Join Date: Dec 2007 Location: Park Ridge NJ + Windermere FL iTrader: (23)	Yeah I have a write up, Just look through my old posts, Wasn't too picture heavy as I just wanted the bloody thing in, But I did it myself on my back with the car only on jack stands lol, Oh and ALONE lol, That was a weekend to forget! I wouldn't say this is a DIY though, setting up gears is a PITA, Its not complicated, its just tedious with constant shimming, assembling, checking, then if its wrong it all comes apart again, Thankfully my diff needed no shims, I guess because the car was still new, and to date zero whine or issues, __________________ Imola Red Roadster
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12-22-2010, 04:33 PM	#22
Starscream Colonel 135 Rep 2,120 Posts Drives: ///M Roadster + E92 335i 6MT Join Date: Dec 2007 Location: Park Ridge NJ + Windermere FL iTrader: (23)	Oh and complete diff's wasn't available when I did mine, You could only buy the gear sets, Dinan at the time only offered 3.91's as a complete Diff setup, But from memory they were close to $3000 for a diff, I think now you CAN get 4.10's already setup, But even a diff swap isn't any picnic!! __________________ Imola Red Roadster
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