Stabilizing rear end on Dinan S3

LMB335IS · 12-20-2016, 07:44 AM

Quote:

Originally Posted by feuer

Quote:

Originally Posted by Notdoneyet

then the diff lock

Either one works great:
http://www.n54tech.com/forums/showpo...&postcount=233
http://www.n54tech.com/forums/showpo...&postcount=230
I originally got the kit but switched to the plate.

Why did you switch? Any difference between the two?

feuer · 12-20-2016, 09:35 AM

Quote:

Originally Posted by LMB335IS

Why did you switch? Any difference between the two?

Friend wanted it, local to me, as he was concern with NHV, so I give it to him and installed the plate that I had sitting on the work bench. Honestly, I can't tell the difference but I experience a lot of booms and bams form suspension and tires.

feuer · 12-20-2016, 10:07 AM

Quote:

Originally Posted by Notdoneyet

I have this http://www.dinancars.com/product/d12...135i-328i128i/

$500!?

tunachris · 12-27-2016, 01:58 PM

With a LSD I never see the e diff lights anymore. Used to look like a Christmas display on a tight road. Now the only time I ever see the lights, is if I break it loose on a wet road.

dleccord · 12-28-2016, 09:49 PM

why does he even need a diff lock?

LMB335IS · 12-29-2016, 08:27 AM

Quote:

Originally Posted by dleccord

why does he even need a diff lock?

Wheel hop more than likely.

HP Autosport · 12-29-2016, 01:31 PM

Quote:

Originally Posted by dleccord

why does he even need a diff lock?

Not everyone has wheel hop issues.

You may pick up some unwanted NVH from a diff lock devise.

dleccord · 12-29-2016, 02:12 PM

Quote:

Originally Posted by LMB335IS

Wheel hop more than likely.

so wheel hop isn't a direct correlation to engine power, because that seems to be the consensus on this forum.

LMB335IS · 12-29-2016, 03:33 PM

Quote:

Originally Posted by dleccord

Quote:

Originally Posted by LMB335IS

Wheel hop more than likely.

so wheel hop isn't a direct correlation to engine power, because that seems to be the consensus on this forum.

Lol, because this place is full of geniuses. You can have wheel hop with stock power levels and break things. Wheel hop at higher power levels just break more things faster.

Notdoneyet · 12-31-2016, 05:31 PM

So finally got the Turner solid SF bushings in and, although road surfaces are sketch here in NH now, have been able to put enough miles on to share conclusions...
First and foremost the rear end planted now and no more scary torque steering when passing, or in straight line. Throttle modulation in corners feels buttoned down. The car just feels solid and "of a piece". NICE! BTW: the old bushings had zero observable deterioration (28000 mi).
As far as NVH:
Noise: slightly increased, not obtrusive (to me)
Vibration: No noticeable difference
Harshness: significant increase noticeable over bumps and surface irregularities.
Total NVH: Would trade every time for the improvement to driving dynamics. No brainier!
Still have not added a diff lock (stabilizer not locked diff) and may not now.
Left all the other bushings stock because of low miles.
Bottom line, if you are running more than 400 BHP or 425 ft/lbs (as many of you are) you probably would benefit greatly from SFB's. And don't worry too much about NVH, even with the solid aluminum ones.

Notdoneyet · 12-31-2016, 06:51 PM

And thanks for all the replies!

I did not have a wheel hop issue, before or after...

HP, so the m3 LSD has no communication or special feature to work with E-diff and they are separate stand alone systems that "work seamlessly together"? No different than adding an aftermarket LSD to a 335? Seems to me with the redundancy of two systems the system capable of reacting first will intervene. Like you said, with much less e-diff intervention, the LSD must be faster than e-diff in most situations. Since installing the bushings the car does not "wander" when torque gets redirected, so des not seem to be an issue (like I thought it might have been before the bushings)
I really appreciate all the comments!

Julian2485 · 12-31-2016, 07:29 PM

Quote:

Originally Posted by Notdoneyet

And thanks for all the replies!

I did not have a wheel hop issue, before or after...

HP, so the m3 LSD has no communication or special feature to work with E-diff and they are separate stand alone systems that "work seamlessly together"? No different than adding an aftermarket LSD to a 335? Seems to me with the redundancy of two systems the system capable of reacting first will intervene. Like you said, with much less e-diff intervention, the LSD must be faster than e-diff in most situations. Since installing the bushings the car does not "wander" when torque gets redirected, so des not seem to be an issue (like I thought it might have been before the bushings)
I really appreciate all the comments!

Where did you get the Bushings installed and how much ? I have m3 bushings but was thinking of getting solid ones

Notdoneyet · 01-01-2017, 10:57 AM

Turner Motorsports, the all aluminum ones. I think they are on sale for like $225. It's a 4-5 hour job so looking at 500-600 install.

12-27-2016, 01:58 PM	#26
tunachris First Lieutenant 17 Rep 363 Posts Drives: 2010 E92 Join Date: Oct 2010 Location: Azusa, CA iTrader: (0) Garage List 2010 E92 [0.00]	With a LSD I never see the e diff lights anymore. Used to look like a Christmas display on a tight road. Now the only time I ever see the lights, is if I break it loose on a wet road. __________________ JB4, BMW Perf. Exhaust, DCI, Strut Brace, KW Series 1, Quaife LSD, Black Kidneys.
	Appreciate 1 Quote

12-28-2016, 09:49 PM	#27
dleccord Captain 108 Rep 841 Posts Drives: 2011 BMW 335i E90 Join Date: Apr 2016 Location: Nelson, New Zealand iTrader: (0)	why does he even need a diff lock?
	Appreciate 0 Quote

12-31-2016, 05:31 PM	#32
Notdoneyet New Member 4 Rep 20 Posts Drives: 2007 335i Dinan S3 Join Date: Dec 2016 Location: Nashua NH iTrader: (0)	So finally got the Turner solid SF bushings in and, although road surfaces are sketch here in NH now, have been able to put enough miles on to share conclusions... First and foremost the rear end planted now and no more scary torque steering when passing, or in straight line. Throttle modulation in corners feels buttoned down. The car just feels solid and "of a piece". NICE! BTW: the old bushings had zero observable deterioration (28000 mi). As far as NVH: Noise: slightly increased, not obtrusive (to me) Vibration: No noticeable difference Harshness: significant increase noticeable over bumps and surface irregularities. Total NVH: Would trade every time for the improvement to driving dynamics. No brainier! Still have not added a diff lock (stabilizer not locked diff) and may not now. Left all the other bushings stock because of low miles. Bottom line, if you are running more than 400 BHP or 425 ft/lbs (as many of you are) you probably would benefit greatly from SFB's. And don't worry too much about NVH, even with the solid aluminum ones.
	Appreciate 0 Quote

12-31-2016, 06:51 PM	#33
Notdoneyet New Member 4 Rep 20 Posts Drives: 2007 335i Dinan S3 Join Date: Dec 2016 Location: Nashua NH iTrader: (0)	And thanks for all the replies! I did not have a wheel hop issue, before or after... HP, so the m3 LSD has no communication or special feature to work with E-diff and they are separate stand alone systems that "work seamlessly together"? No different than adding an aftermarket LSD to a 335? Seems to me with the redundancy of two systems the system capable of reacting first will intervene. Like you said, with much less e-diff intervention, the LSD must be faster than e-diff in most situations. Since installing the bushings the car does not "wander" when torque gets redirected, so des not seem to be an issue (like I thought it might have been before the bushings) I really appreciate all the comments!
	Appreciate 0 Quote

01-01-2017, 10:57 AM	#35
Notdoneyet New Member 4 Rep 20 Posts Drives: 2007 335i Dinan S3 Join Date: Dec 2016 Location: Nashua NH iTrader: (0)	Turner Motorsports, the all aluminum ones. I think they are on sale for like $225. It's a 4-5 hour job so looking at 500-600 install.
	Appreciate 0 Quote