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11-05-2014, 09:09 AM | #23 | |
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-10-2014, 01:16 PM | #24 |
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Drives: 130i coupé ;)
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the small 188mm 3.46 pumpkin from Auto 135/335I may work for us too
Its possible to swap out the Flanges to 128i/328i spec as per this thread ( non e9x but applicable) http://www.bimmerfest.com/forums/sho...highlight=3.46 135i/335i Small diff pics - http://www.1addicts.com/forums/showthread.php?t=657738
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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 Last edited by andrey_gta; 11-10-2014 at 08:36 PM.. |
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11-11-2014, 02:48 AM | #26 |
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I have 3.64 gears in my two clutch LSD. It makes first gear almost useless for daily driving-but the rev drops between gears feel better- in short the thing is a lot more fun for spirited driving- and you're less likely to really speed on the highway because 6th is now a useable gear for America jjighways.
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11-11-2014, 06:42 AM | #28 |
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11-11-2014, 01:06 PM | #29 |
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Just an FYI, the Mfactory has made a statement that some LSD shop for bmw/ euro brands used the Mfactory units and relabeled them under their name. No clue as to whom it was, but just a good to know
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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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11-12-2014, 06:23 PM | #30 |
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That's who built the one in my car and it's really rock solid. Was spec'ed by the Classic BMW Motorsports race team manager and crew chief who was also my S/A. Worth every last cent.
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-12-2014, 07:07 PM | #31 |
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Nice whats the maintainence on those suckers for a few track days a year (say < 6) and 5k DD miles or so. Gonna get one once I buy out my car in a month after lease end.
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11-12-2014, 07:37 PM | #32 | |
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The car sees about 15K miles per year, mostly highway around town, some stop and go traffic, 160mi round trip to the track each day. And it gets the crap beat out of it with a solid driveline and dual rigid disc race clutch with a billet flywheel.
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-12-2014, 08:04 PM | #33 |
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11-12-2014, 08:16 PM | #34 |
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Wish I could but I only know it's 70% lockup, 2-way. I need to call Jim and tell him who it was who spec'ed it and I'm sure he could tell me the details.
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-12-2014, 08:47 PM | #35 |
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Checked through the PG site and found this:
Tech Specs Since the lockup is 2-way and 70% I think the ramp angles are 45/45 which matches up with some other research I've done and fits with the Street class of differentials listed on this page. And it has five 90mm ceramic coated friction discs per side since it's for a 6 cylinder engine. I emailed them to find out if the design is different enough to not fit with any of the standard categories somehow but I'm thinking it's really different enough from the full track versions that it very well may not be the same core they use in their racecars. Regardless, it really makes a difference.
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-13-2014, 12:00 AM | #36 |
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Justpete your car must accelerate like a rocket with that kinda gearing. I'm so jealous.
How do you find rpms are in 6th at cruising say 70/80mph |
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11-13-2014, 07:33 AM | #37 | |
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At 70 the revs are about 3000 and at 80 about 3500.
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-13-2014, 12:44 PM | #38 | |
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Thanks, it was this or the mfactory but I am going with local built from performance. BR racing has their diffs locally in the bay area as well. |
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11-13-2014, 02:33 PM | #39 | |
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Here are the actual specs on the diff, Jim was able to locate the serial number for it and told me where to find it on the case, too. It turns out it has four clutches per side instead of five and if I'm reading this right it would indicate the lockup can be as high as 100% in both directions. "- 3.73L gearset - four 90mm friction discs/plates - 45/45 ramp angles - 60 lbs/ft static lock ( resistance to rotation between the rear wheels , baseline minimum), comparable to approx. 35% Because it is a true Salisbury design, the mechanical ramping mechanism that generates dynamic lock (throttle initiated) will augment static % for the full 35% to 100%, if called upon to do so. And since this design is "comprehensive" ( both static and dynamic lock capable) your accel/decel transitions should always be seamless without any abruptness." It's definitely seamless, psychic is maybe a better word.
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-13-2014, 02:36 PM | #40 | |
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"- 3.73L gearset - four 90mm friction discs/plates - 45/45 ramp angles - 60 lbs/ft static lock ( resistance to rotation between the rear wheels , baseline minimum), comparable to approx. 35% Because it is a true Salisbury design, the mechanical ramping mechanism that generates dynamic lock (throttle initiated) will augment static % for the full 35% to 100%, if called upon to do so. And since this design is "comprehensive" ( both static and dynamic lock capable) your accel/decel transitions should always be seamless without any abruptness."
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-13-2014, 03:32 PM | #42 | |
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[edit] You can get one built pretty much any way you want actually. [/edit]
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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11-13-2014, 05:38 PM | #43 | |
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Using no lock, or 90% and leaving static lock do the work can help reduce push. |
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11-13-2014, 05:50 PM | #44 |
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Ah, OK, gotcha. Makes perfect sense. I guess turn-in is more violent in autox than on the track then? Haven't seen this before I think but maybe I have and didn't know it.
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2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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