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Diff locking brace
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| 11-16-2015, 10:48 AM | #1 |
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Colonel
 
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Diff locking brace
Well after having a good stint at Santa Pod and having my run reviewed by some experts I was advised to fit a differential locking brace due to the wheel hop they saw in my video.
I had always assumed that this was normal when on the edge of traction but apparently it's a killer for the drive shafts and suspension. I've now fitted a locking kit and the back end feels nice and firm. I will have to get uprated bushes for the rest of my car because it feels more solid. I will eventually do the control arms, strut bars and maybe some coil overs as well.   Just have to wait for Santa Pod to reopen now. Just 76 days to go  I suppose it'll have to be on the road and daily driving testing for now.
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GC Turbos, FBO, JB4, DCT, Port Meth injection, BMS Charge Pipe, NGK plugs. EBC brakes and pads, LED Angel lights, LED foglights, LCI rears OCC, Braided brake lines. Custom Diff Lockdown Kit, VTT inlets, TMAP, stage 2+ fuel pump
11.79@119mph (stock turbos) 11.74@129mph (GC Turbos) Last edited by AWSAWS; 11-16-2015 at 11:40 AM.. |
| 11-16-2015, 01:36 PM | #3 | |
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 Depends if u feel the wheels moving I guess. Hope to see some good improvement on my 60ft times! Thing is I don't have much faith in the rubber compound of the PSS tyres.
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GC Turbos, FBO, JB4, DCT, Port Meth injection, BMS Charge Pipe, NGK plugs. EBC brakes and pads, LED Angel lights, LED foglights, LCI rears OCC, Braided brake lines. Custom Diff Lockdown Kit, VTT inlets, TMAP, stage 2+ fuel pump
11.79@119mph (stock turbos) 11.74@129mph (GC Turbos) |
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| 11-16-2015, 02:08 PM | #4 |
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Don't think i felt any wheel hop at santa pod or on the road, but i never brake boost a lot.
How much did you say they were again? I suppose theres no harm in having one. |
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| 11-17-2015, 08:54 AM | #6 |
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| 11-17-2015, 01:25 PM | #7 |
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Drives: E92 325i MSport Coupe
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What's the effect on NVH of fitting one of these braces?
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E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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| 11-17-2015, 03:15 PM | #8 | |
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| 11-17-2015, 04:25 PM | #9 |
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I haven't noticed any increased noise at all but mine is a single bushing with some very thin rubber between. It feels a bit firmer but I still need to do the other bushes I think.
On other forums the boost addicts brace does not seem as highly regarded. Plus some models don't have the necessary holes for mounting and have to be cut.
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GC Turbos, FBO, JB4, DCT, Port Meth injection, BMS Charge Pipe, NGK plugs. EBC brakes and pads, LED Angel lights, LED foglights, LCI rears OCC, Braided brake lines. Custom Diff Lockdown Kit, VTT inlets, TMAP, stage 2+ fuel pump
11.79@119mph (stock turbos) 11.74@129mph (GC Turbos) |
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| 11-17-2015, 06:23 PM | #10 |
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Drives: E92 325i MSport Coupe
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One thing I like about the OP's brace is that you can still change the diff fluid without removing the brace...
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E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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| 11-19-2015, 04:40 PM | #11 | |
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Which one did you get and how much was it?
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| 11-20-2015, 07:27 AM | #12 | |
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I know a guy who makes them up himself. Can offer them for £160 to anyone interested, in all diff sizes. It's very similar to a very expensive German design but has just the one aluminium bushing attaching the diff to the subframe, as u see in the pic above. http://www.e90post.com/forums/showthread.php?t=799038 My install took 30 mins as it's not as complex.
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GC Turbos, FBO, JB4, DCT, Port Meth injection, BMS Charge Pipe, NGK plugs. EBC brakes and pads, LED Angel lights, LED foglights, LCI rears OCC, Braided brake lines. Custom Diff Lockdown Kit, VTT inlets, TMAP, stage 2+ fuel pump
11.79@119mph (stock turbos) 11.74@129mph (GC Turbos) Last edited by AWSAWS; 11-20-2015 at 07:34 AM.. |
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| 11-27-2015, 05:58 AM | #13 | |
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I thought the whole point was to lockdown the diff to the subframe. A bushing just still allows movement. Don't get me wrong, the bushing makes absolute sense, but maybe that is also why you don't notice such a difference? 'just thinking out loud here' |
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