BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E46 M3 (2001-2006)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


Reply
 
Thread Tools Display Modes
Old Tue, May-14-2019, 05:44:01 PM   #31
youinreverse
Registered User
 
Join Date: Dec 2016
Posts: 318
In the garage:
Reputation: 0 youinreverse is on a distinguished road
Location: SLC

United States




Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by WALKD_U View Post
Keep us posted! Lmk if I can help in anyway
So I've had a vibration since I put the driveshaft in my car. It's not violent, but there is a constant vibration. At freeway speeds the vibration causes a whole bunch of parts to rattle at a buzzing frequency. There's a bunch of noise coming from the dash, from all the door lock rods, and other small parts that have never made any noise before. It gets louder and more harsh the faster you go. I haven't been any faster than 90 since I've installed, because the noises start to scare me.

I wanted to confirm that the driveshaft was the problem, so I took it to a driveshaft shop that I trust and paid for a balance test. He put it on his machine and let me know that it was 5-6 thousandths out of balance on both ends. He told me that in that range it's probably drive able, but he worries long term about how the vibration will affects other components of the car. He said that if he's building a driveshaft for a BMW, he gets it as close to zero as possible because these cars are finicky. I was hoping to track this car this summer and I'd be worried to do it with this driveshaft.

The owner of the shop told me to have the driveshaft company give him a call if they have any questions, and I can provide that if needed.

I need to send an email over to Morgan and hope I can get some help with this. : (

Last edited by youinreverse; Fri, May-17-2019 at 05:07:10 AM.
Jump to top youinreverse is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Tue, May-14-2019, 05:51:31 PM   #32
WALKD_U
Registered User
 
WALKD_U's Avatar
 
Join Date: Apr 2011
Posts: 1,135
In the garage:
Reputation: 0 WALKD_U is on a distinguished road
Location: Madison

United States




Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by youinreverse View Post
So I've had a vibration since I put the driveshaft in my car. It's not violent, but there is a constant vibration. At freeway speeds the vibration causes a whole bunch of parts to rattle at a buzzing frequency. There's a bunch of noise coming from the dash, from all the door lock rods, and other small parts that have never made any noise before. It gets louder and more harsh the faster you go. I haven't been any faster than 90 since I've installed, because the noises start to scare me.

I wanted to confirm that the driveshaft was the problem, so I took it to a driveshaft shop that I trust and paid for a balance test. He put it on his machine and let me know that it was 5-6 thousandths out of balance on both ends. He told me that in that range it's probably drive able, but he worries long term about how the vibration will affects other components of the car. He said that if he's building a driveshaft for a BMW, he gets it as close to zero as possible because these cars are finicky. I was hoping to track this car this summer and I'd be worried to do it with this driveshaft.

The owner of the shop told me to have the driveshaft company give him a call if they have any questions, and I can provide that if needed.

I need to send an email over to Jesse and hope I can get some help with this. : (
Thanks for the update! Very strange I will inquire with Jesse as well to get bottom of this and resolved for you!
__________________
Rides:
2005 AW/IR M3
BMB Stage 4
940whp/765wtq SAE Corrected

1996 BLU/BLK M3
NA Bolt-ons
235whp/225wtq SAE Corrected

Instagram:
M3HNGRY

EURO.techniks
<a href=https://www.instagram.com/m3hngry/ target=_blank>M3HNGRY</a>
Jump to top WALKD_U is offline   Reply With Quote
Old Tue, Jun-18-2019, 12:00:23 PM   #33
HofmeisterKinky
See what I did there?
 
HofmeisterKinky's Avatar
 
Join Date: May 2007
Posts: 410
In the garage:
Reputation: 0 HofmeisterKinky is on a distinguished road

United States




Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by WALKD_U View Post
Thanks for the update! Very strange I will inquire with Jesse as well to get bottom of this and resolved for you!
Any update on this?
__________________
2008 E90 M3 6MT
Jump to top HofmeisterKinky is offline   Reply With Quote
Old Tue, Jun-18-2019, 03:00:44 PM   #34
youinreverse
Registered User
 
Join Date: Dec 2016
Posts: 318
In the garage:
Reputation: 0 youinreverse is on a distinguished road
Location: SLC

United States




Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by HofmeisterKinky View Post
Any update on this?
Morgan was very helpful. She's the only one there that speaks english, so she passed information over to the engineer. After a few emails back and forth and me providing installation photos they agreed that the driveshaft was out of balance and they would send me a new one. I just picked it up from FedEx last night and started removing the old one. I should finish the install tonight. Hopefully all goes well! I'll post an update here when I'm finished.
Jump to top youinreverse is offline   Reply With Quote
Old Tue, Jun-18-2019, 03:48:07 PM   #35
0-60Motorsports
Established 1998....
 
0-60Motorsports's Avatar
 
Join Date: Mar 2004
Posts: 14,976
In the garage:
Reputation: 0 0-60Motorsports is on a distinguished road
Location: Al Manama, Bahrain

Bahrain




Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by youinreverse View Post
Morgan was very helpful. She's the only one there that speaks english, so she passed information over to the engineer. After a few emails back and forth and me providing installation photos they agreed that the driveshaft was out of balance and they would send me a new one. I just picked it up from FedEx last night and started removing the old one. I should finish the install tonight. Hopefully all goes well! I'll post an update here when I'm finished.
Excellent news. Let us know how it goes.
__________________
EURO 04 M3 Mods: GC DA's / Eibach Sways / PF RTABs / RE RCAs / INTRAVEE II / ///MFEST Badges / M5 SMG Knob / VCSL: Bumper + Race Lip, CF Trunk, CF Diffusor / DIETZ TV in Motion / SuperSprint: Stepped Headers, Cat Deletes, Res X-pipe, Sport Muffler / Z8 Starter Button / Lamin-X / STM Paddles / OEM CSL: Steering, Interior, Intake, CF Roof / Terra MSS54HP CSL Clone + TTFS Tune / BBS CH's, LIGHTWERKZ / ST40's / DINAN RSB / RE Race Brace / BW Oil Cooler / 3.91 gears / Radium OCC
Jump to top 0-60Motorsports is offline   Reply With Quote
Old Tue, Jun-18-2019, 08:08:31 PM   #36
Arith2
Registered User
 
Arith2's Avatar
 
Join Date: Jun 2018
Posts: 196
In the garage:
Reputation: 0 Arith2 is on a distinguished road
Location: Gainesville

United States




Default Re: J-Fiber CF Driveshaft Thread!

If rev matching gets easier after you put this driveshaft in, it's all placebo. The driveshaft is always connected to the wheels unless something broke bad. I'm not convinced this mod is worth the money which I why I never bought the cf driveshaft from the marketplace here. There is alot of rotational mass in the vehicle and this doesn't amount to much, especially for the price. You certainly won't feel it. It might equate to half a horsepower.
__________________
'06 Alpine White III - Cinnamon Interior

Buildjournal Tune | CSL Trans Software | Megan Racing Headers | Turner Power Pulleys | GruppeM Ti muffler | K&N Filter | ECS Silicone Intake Boot | SMG(Conversion coming one day) | Stainless Steel Vanos line | Dinan Strut Reinforcement bars F&R | OEM Sec 1 and 2 Exhaust | OEM Intake | Pioneer Radio | CSL Trunk | Headliner that isn't Saggy | Poorly Wrapped Steering Wheel by Previous Owner | OEM Suspension | Aftermarket Driver
Jump to top Arith2 is offline   Reply With Quote
Old Tue, Jun-18-2019, 09:41:55 PM   #37
Dr M3an M3
GroupBuyingPower@outlook. com
 
Dr M3an M3's Avatar
 
Join Date: Mar 2016
Posts: 4,180
In the garage:
Reputation: 0 Dr M3an M3 is on a distinguished road
Location: Columbia, SC

United States




Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by Arith2 View Post
If rev matching gets easier after you put this driveshaft in, it's all placebo. The driveshaft is always connected to the wheels unless something broke bad. I'm not convinced this mod is worth the money which I why I never bought the cf driveshaft from the marketplace here. There is alot of rotational mass in the vehicle and this doesn't amount to much, especially for the price. You certainly won't feel it. It might equate to half a horsepower.
This was briefly a topic of discussion in our local E46 M3 Whatsapp group chat and that was the general consensus on there as well. Typically the big benefit of a CF driveshaft is that if your race car (NASCAR for example) breaks a drive shaft mid race, because it's CF, it will just splinter and shred in a much safer and less surrounding destructive nature ....Rather than being a chunk of metal rotating and destroying everything in its path under the car...or worse, coming through the floor board and injuring the driver (which can happen).
__________________
2004 E46 ///M3 - Oxford Green Metallic II + Cinnamon SMG
IG: DrM3anM3

Mods: Genuine OE CSL Bumper, Both Karbonius and Streamline CSL Airboxes, OE CSL Snorkel w/ working Flap, OE Map Sensor + OE Air Rail, Paul Claude Custom Tune, CSL Engine management with CSL converted DME, Supersprint V1 Stepped Headers w/ Oversized HJS Race Catted section 1, SS 2.5" Twin-Piped Oversized Custom section 2, Custom Oversized Supersprint muffler, Catcam's Billet 280/272 cams, WPC treated rod-bearings, VinceBar (weld) + Redish Plates, Full Beisan VANOS lockdown, BBS LMs w/ PSS, Brembo GT6 (front) + GT4 (rear) BBK, CSL style CF diffuser, Vorsteiner CF CSL Bootlid, CSL SMG Engine DME tune, CSL '255' SMG DME tune, SMG Pump Relocated.
For Sale: BNIB OE CSL Wheels
Active Group-Buys (PM if Interested):
Camshaft Group-Buy, OE CSL Bootlids, Supersprint Headers/Exhaust thread, New Supersprint Oversized Twin-Piped Section 2
Jump to top Dr M3an M3 is offline   Reply With Quote
Old Tue, Jun-18-2019, 10:50:21 PM   #38
bjz
Registered User
 
bjz's Avatar
 
Join Date: Jan 2009
Posts: 1,213
In the garage:
Reputation: 0 bjz is on a distinguished road
Location: Canary Island

Spain




Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by EricSMG View Post
If rev matching is done with the clutch disengaged, then the motor and trans/driveshaft are totally decoupled.

From this, how would a driveshaft affect rev matching?
I dont understand either. LOL
Jump to top bjz is offline   Reply With Quote
Old Wed, Jun-19-2019, 01:51:56 AM   #39
Arith2
Registered User
 
Arith2's Avatar
 
Join Date: Jun 2018
Posts: 196
In the garage:
Reputation: 0 Arith2 is on a distinguished road
Location: Gainesville

United States




Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by Dr M3an M3 View Post
This was briefly a topic of discussion in our local E46 M3 Whatsapp group chat and that was the general consensus on there as well. Typically the big benefit of a CF driveshaft is that if your race car (NASCAR for example) breaks a drive shaft mid race, because it's CF, it will just splinter and shred in a much safer and less surrounding destructive nature ....Rather than being a chunk of metal rotating and destroying everything in its path under the car...or worse, coming through the floor board and injuring the driver (which can happen).
This topic actually had me talking to my instructor, who taught the NASCAR training program in North Carolina and he said they use steel. Your point is definitely seems valid but to spend so much more for something that seems to happen less in race cars than other issues. Driveshafts are very robust and other pieces break before the driveshaft. I can understand spending $4000 on a CSL intake and tune but I don't understand this carbon fiber driveshaft craze. It's a bragging rights thing but I don't want to see my fellow M3 compadres on here walk into this mod without knowing they are not buying performance or better quality.
__________________
'06 Alpine White III - Cinnamon Interior

Buildjournal Tune | CSL Trans Software | Megan Racing Headers | Turner Power Pulleys | GruppeM Ti muffler | K&N Filter | ECS Silicone Intake Boot | SMG(Conversion coming one day) | Stainless Steel Vanos line | Dinan Strut Reinforcement bars F&R | OEM Sec 1 and 2 Exhaust | OEM Intake | Pioneer Radio | CSL Trunk | Headliner that isn't Saggy | Poorly Wrapped Steering Wheel by Previous Owner | OEM Suspension | Aftermarket Driver
Jump to top Arith2 is offline   Reply With Quote
Old Wed, Jun-19-2019, 02:15:36 AM   #40
pbonsalb
Registered User
 
Join Date: Jun 2005
Posts: 4,143
Reputation: 0 pbonsalb is on a distinguished road





Default Re: J-Fiber CF Driveshaft Thread!

Quote:
Originally Posted by Arith2 View Post
If rev matching gets easier after you put this driveshaft in, it's all placebo. The driveshaft is always connected to the wheels unless something broke bad. I'm not convinced this mod is worth the money which I why I never bought the cf driveshaft from the marketplace here. There is alot of rotational mass in the vehicle and this doesn't amount to much, especially for the price. You certainly won't feel it. It might equate to half a horsepower.
You definitely notice it, but mostly because the one piece reduces the slop in the 2 piece. It does not significantly reduce drivetrain loss due by cutting driveshaft weight in half but it does help and dropping rotational mass is worth more than dropping the equivalent amount of sprung weight. Might be measurable on a dyno and my guess is that it would be more than half a horsepower gain.

I agree it should not be at the top of the mod list, but if you have done everything else that helps power, itís worth considering. As for cost, itís about 2x the price of a rebuilt stock shaft so if you need a new shaft anyway, the cost is not as significant. Some spend stupid money for a catback exhaust that adds nothing more than a more powerful sound.
Jump to top pbonsalb is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT. The time now is 12:36:56 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright ©1999-2017 M3Forum.com
Discussing J-Fiber CF Driveshaft Thread! in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)