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08-26-2014, 09:21 PM | #1 |
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Diff Bushings
I currently have the DEFIV Lockdown kit which consists of solid aluminium bushings as well as adding a fourth link. Pic to illustrate.
Combined with M3 subframe bushings and a wavetrac LSD I get a lot of noise both whining and clunks. Plus it hasn't completely cured axle tramp which was it's purpose, so I'm thinking the trade off in noise is not worth it for me. Weighing up my other options and looking for opinions and experiences from others. Some of the options: -OE replacement. Probably too soft, and what is the part number for the rear bushing? http://www.ecstuning.com/BMW-E82-135...ntial/ES56748/ -M3 spec. Might be a good compromise, again what is the part number for the rear bushing? http://www.ecstuning.com/BMW-E82-135...ial/ES1844489/ -Powerflex. Has anyone used these? http://www.ecstuning.com/BMW-E82-135...ial/ES2651223/ http://www.ecstuning.com/BMW-E82-135...ial/ES2651068/ -Powerflex race. I have a feeling these will probably be just as noisy as the solid bushings. http://www.ecstuning.com/BMW-E82-135...ial/ES2651070/ http://www.ecstuning.com/BMW-E82-135...ial/ES2650111/ What other options have people used and would recommend? |
08-26-2014, 10:15 PM | #2 |
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My car has full solid bushings.
Diff bushings induce a lot of noise and you can experience different results based on the different combinations of bushings. I suggest going back to OEM Diff bushings and instead change your M3 subframe bushings to solid aluminum subframe bushings. This will tighten the rear end significantly and not introduce too much noise and vibration. |
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08-26-2014, 10:20 PM | #3 |
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I thought someone might suggest that, it's not a bad idea but I cbf changing subframe bushings again.
What solid bushings are you using? |
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08-26-2014, 10:28 PM | #4 |
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Turner Motorsport solid aluminum. The simplest options is remove the solid diff bushings to cut the diff wine and vibration and just go OEM. But if you want to lock the rear end with minimal noise and vibration, solid subframing is the way to go.
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08-26-2014, 10:30 PM | #5 |
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08-26-2014, 10:32 PM | #6 |
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Funny you should say that I was just on the Turner website.
http://www.turnermotorsport.com/BMW-...nd-mounts.aspx I'll take your suggestion on board. |
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08-27-2014, 06:04 AM | #7 |
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I'm just about to wack a set of these in...softer than the power flex but stiffer than the oem
http://www.nolathane.com.au/product_...t_number=49204 |
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08-27-2014, 12:32 PM | #8 |
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08-27-2014, 07:05 PM | #9 |
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08-27-2014, 07:17 PM | #10 |
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Sorry to thread jack, but has anyone DIYed the solid aluminum subframe bushing? I'm interested in knowing whether all four of the Turner aluminum bushings install from the bottom up like the 135i bushings, or are they like the M3 bushings where the fronts install from the top down. The guy who answered the phone at Turner couldn't answer that question.
Looking at the picture above, it appears the delrin bushings install like the M3 bushings. |
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08-27-2014, 08:18 PM | #11 | |
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Interested to hear your impressions. |
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08-27-2014, 09:11 PM | #12 |
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08-29-2014, 05:46 AM | #13 |
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Whiteline/prothane/Nolathane Subframe bushes get good reviews for cars with Diff lock kit
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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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08-31-2014, 08:50 PM | #14 | |
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If I was going to switch subframe bushings again I would probably do the solid ones and go back to stock diff bushings as suggested above. I'm more interested to see if anyone has experience with diff bushings that are somewhere between solid ones and the stock ones in terms of frimness. |
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08-31-2014, 10:08 PM | #15 |
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09-01-2014, 01:14 AM | #16 |
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Luke. I am running Whiteline ones at the moment, they seem to be fine. Firmer than stock and I haven't noticed any dramatic increase in noise.
I got the subframe and diff bushes changed by Josh. |
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09-01-2014, 08:02 PM | #17 |
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09-01-2014, 08:50 PM | #18 | |
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You may be better off swappign Diff busheing to something Poly, sae: Powerflex, and Powerflex Black Nolathane/prothane/whiteline( same brand, nolathane cheapest) Strongflex.eu ( polish & Cheap) SuperPro - Australian Powerflex style brand - lots of kits, simmilar price
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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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09-01-2014, 09:09 PM | #19 | |
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09-02-2014, 09:19 PM | #22 |
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