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12-06-2013, 04:58 PM | #287 |
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I recall someone criticizing swaybar bushings in an old thread. Therefore you can try, I assume the result will be good
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is |
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12-06-2013, 10:51 PM | #288 | |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
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Last edited by 3002 tii; 12-07-2013 at 07:33 AM.. |
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12-06-2013, 11:41 PM | #289 | |
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12-07-2013, 06:46 AM | #290 | |
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OEM rubber sway bar bushings are designed with comfort in mind, allowing the sway bar to articulate while permitting additional movement, leading to less-than-ideal bar retention and causes unnecessary body roll. I guess that is why there is plenty of stiffer aftermarket FSB's out there to choose from, including the the E92 and E93 FSB that are direct replacements... If you have nothing valuable to add, please move on ...
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
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12-07-2013, 07:38 AM | #291 | |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
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Am I against all bushings? No the subframe ones clearly are too soft but not fsb. How do I know? Because I installed the m3 fsb and there was no noticeable difference in rigidity. Why don't you take a poll with the RACERS on bfc and ask how many upgrade to aftermarket fsb bushings. I guarantee the results will say barely any. I'm all about real world results and best bang for buck, not theoretical benefits perpetuated by forum junkies. You may think I'm being unhelpful but I'm genuinely giving you the best advice on how to make your dollar go the furthest and avoiding unnecessary mods. It was no different when I told you to skip the street pads for track. You just seem to get defensive whenever someone tells you something you don't want to hear. If you knew you wanted the bushings then just buy without asking. But don't get mad if someone says no to a question you posted. |
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12-07-2013, 08:51 AM | #292 |
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3002Tii: I dont doubt your experience and expertise, but when you come one here and your first reaction is to crap over the post instead of answering, dont expect sympathy.
The goal of forums is to seek advice, share experiences, and ask questions, no? You are very capable at coaching, judging by your second response, but you need to tone it down ... I simply asked a question, and expected a civilized answer. You seem to have an attitude issue, and enjoy taking blows at newbies. Whatever amuses you ...
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
Last edited by dcaron9999; 12-07-2013 at 08:57 AM.. |
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12-07-2013, 11:16 AM | #293 | |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
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In regards to this thread, let's take a step back and think what you're trying to accomplish. You want the front end sway to stiffen up the front, why? Because in lieu of getting a coil over setup, this will effectively increase the spring rates which would result in less body roll and increased traction. The sway bar is not the ideal way to do this but it *works*, but bushings alone will not accomplish this. Bushings and sway bars clearly accomplish 2 different things and 1 is not a replacement for the other. The thickness, density and curvature of the bar is what makes a difference hence why the E92/3 M3 bars do result in different handling characteristics. Sure the M3 bushing might be marginally stiffer but, I assure you that marginal stiffness is not what translates to increased grip. The marginal stiffness is there to accommodate the thicker/stiffer bar. If you know you're never going to get suspension work done, go directly for the bar but don't do it piecemeal, bushings first, then bar. Your'e just putting the car on ramps and pulling off the undercover 2x, that alone isn't worth your time to prove some theory. |
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12-07-2013, 05:51 PM | #294 | |
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Ohlins R&T : Swift 672 lbs/in rear-392 lbs/in front : Vorshlag (-2.7): M3 lower control arms : M3 rear subframe bushings : M3 front sway (stock rear) : Quaife LSD : Apex Arc-8 18"/8" : Breyton GTSR 18"/7.5"/8.5" : StopTech BBK (F&R) : BMW perf exhaust : Mason strut brace : BMW carbon rear lip
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12-09-2013, 05:39 PM | #295 |
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IMO, this whole idea of using a sway bar to reduce understeer only happens on cars that have stock front camber. If your car has camber plates or the M3 front arms, a firmer front bar will add understeer. Once you have front camber on the car and combine non-staggered tires, the 135i will become quite snappy. Personally I like the E93 M3 front sway bar because it dials in some understeer and makes the car more stable in high speed braking on the circuit. For people with otherwise stock suspension and staggered tire sizes, the 26.5mm E92 M3 bar seems a good choice for street driving.
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12-09-2013, 07:57 PM | #296 | |
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I did experience this "snappiness" you mentioned on the track. I wonder if my front camber adjustment was overdone or too far beyond the rear setting (maxed at -3.2 in the front , and -1.6 in the rear). I do get better turn in though. Sounds like the E92 front sway bar on my stock M sport suspension may help with the understeer, and outside tire edge wear, and I can probably dial down my negative camber slightly as a result. .
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
Last edited by dcaron9999; 01-17-2014 at 08:12 PM.. |
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01-17-2014, 08:16 PM | #297 |
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Almost ready to pull the trigger on a E92/M3 front sway bar on my stock M sport suspension. Not ready to invest in new dampers+springs this year. I hope this reduces body roll, understeer, and outside tire edge wear. Maybe this will allow me to dial down my negative camber in the front slightly from -3.2, and still get good results (ie no sudden snapping of the rear end) at the track.
I might get Dinan camber plates, because the rattle noise coming from my adjustable Ground Control "Street" plates is driving me nuts. I was never able to get rid of the noise, even with support and various parts provided directly by Ground Control Tech Support.
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
Last edited by dcaron9999; 01-18-2014 at 09:15 AM.. |
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01-18-2014, 01:12 AM | #298 |
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I wouldn't count on it reducing understeer as your car isn't limited by front camber. Anyway it would be interesting to see how it goes. 3.0+ degree front camber is generally an essential ingredient if you want to get good turn in and reasonable tire life.
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01-18-2014, 09:42 AM | #299 |
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I hope the E92/M3 front sway bar reduces body roll, and does not increase understeer too much.
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
Last edited by dcaron9999; 01-24-2014 at 12:04 PM.. |
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