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04-23-2019, 04:58 PM | #1 |
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Hi everybody,
I don't like that ruberry feeling with the rear train since i got the car (almost 2 years), i run with JB4 since 8 months and it's worst !! It's like i drive a drag race car but i "only" got above 360/380HP with JB4 . So i've disassembled the rear subframe of my 135i to make the usual modifications : Hydraulic ramps to lift the car : Ultimate grip Come on baby ! My program : - Subframe bushings : Strongflex https://www.strongflex.eu/en/e81-e82...553526639.html - Solid bearing rear toe arm : https://www.ebay.fr/itm/1-Series-E82...UAAOSwGq5cLlwD or https://www.ebay.fr/itm/06-12-E90-E9...cAAOSw3bBceZOl - M3 rear guide rod - Shock absorber + coils - Andddddd LSD !!! either i look for a m3 auto diff with shafts or i'll install a quaife or Mfactory one ... Now i have some questions : I don't know what suspension kit is the best for price (less than 1400) KW V2? KW St? Billstein? Koni? H&R? Replacement of the Sway Bar or not ? See you soon for more pictures |
04-25-2019, 07:18 PM | #2 |
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Drives: '98 Z3M (gone), '09 135i
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If you're not set on coil overs, I've been a huge fan of my setup with dinan springs from a 335i with bmw performance shocks. Great for getting rear weight transfer, but still has good dynamic handling on rough twisty roads. I changed a lot all at once though.
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05-01-2019, 10:32 AM | #4 | |
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Also running full M3 rear subframe bushings and front M3 control arms. It's definitely getting better |
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05-01-2019, 11:16 AM | #5 |
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I'm going to do a minor detour/hijack here since there is such good experience participating in this thread...
When dropping the subframe where do you disconnect brake lines? Are the brake line pipes actually attached to the subframe? Do you plug the ends and with what? How to avoid loss of much brake fluid? I assume bleeding is necessary after reconnecting. Asking because I need to tap out the mounting holes for the rear arb bracket and need to drop the subframe a good bit to be able to do so.
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E82 / BMWP Springs / Koni Yellows / M front control arms / Adjustable front endlinks / M rear guide rods / Whiteline Poly RSFB
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05-03-2019, 02:39 PM | #6 |
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Dropping subframe will requier you to disconnect the middles lines. Hold the brake pedal to the floor with a wood block or some shit and brake fluid won't drip out.
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05-03-2019, 04:48 PM | #7 | |
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So the metal pipes are not attached to the subframe? I was just afraid of lowering the subframe and snapping a metal pipe.
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E82 / BMWP Springs / Koni Yellows / M front control arms / Adjustable front endlinks / M rear guide rods / Whiteline Poly RSFB
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05-04-2019, 09:08 AM | #9 |
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When dropping the subframe where do you disconnect brake lines? on the left in front of the subframe
Are the brake line pipes actually attached to the subframe? yes you got metal line for the right caliper Do you plug the ends and with what? with wood sreweded in the thread How to avoid loss of much brake fluid? you can't |
06-06-2019, 08:31 AM | #10 |
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hi guys, here arre the news.
I installed Strongflex bushings on my rear subframe. It seem to be goods bushings they got aluminium inserts. First i extract the old bushings, for this i do custom tools : here the rusty subframe : I don't like it so i did a paint job : Front bushong are in 2 parts so easy to install! But rear are a pain to engage So i did another custom tool : And finish the job like this : Next time i'll replace TOE, Camber and trailing arms with adjustable ball link - https://www.ebay.fr/itm/272049012994?ul_noapp=true - https://www.ebay.co.uk/itm/FOR-BMW-3...53.m2749.l2649 In 2/3weeks, parts are on the road After i'll do coilovers and M3 front arms. Last edited by vincefreeflyer; 06-06-2019 at 08:42 AM.. |
06-21-2019, 05:24 AM | #12 |
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here we are :
i received the ball linked adjustables arms : I was looking for an "non-expansive" LSD but not cheap too I got it !!! M3E9X LSD baby !! A guy who got a wrecked M3 sold his complete rear axle so i bought it last week. I'm just disappointed to get this now because i ordered arms and bushings one month later... If i get this rear axle 1 month before i saved precious time and money ... But i have also a good setup But i'm unsure, does i use my 135i modded rear axle or the M3 one? Or i can use some parts of the rear M3 one (like lower camber arms). In both case i'll use m3 LSD, m3 halfshafts, m3 sway bar on the final project Here are some pictures of the 2 rear axles : and here sway bars comparison : |
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06-21-2019, 08:16 AM | #13 |
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Should have done solid subframe...
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06-21-2019, 10:56 AM | #15 |
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Good thread 🔥
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06-21-2019, 03:04 PM | #16 |
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06-22-2019, 07:01 AM | #18 |
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06-22-2019, 07:24 AM | #19 |
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It's not a power issue. The 2pc poly are easier to install but that's about it. When it comes to suspension, use rubber or metal.
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06-24-2019, 03:07 AM | #20 | |
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PU is good enough, i had PU before i switched to metal, both are fine. |
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06-24-2019, 09:09 AM | #21 | |
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Really? Look at the first pictures of this topic, a press is required to install those poly And yes subframe is more structural than suspension |
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06-24-2019, 01:51 PM | #22 |
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The typical replacement for PU subframe bushings is from Whiteline, which are two piece both front and rear. No press needed for install! That's prob why previous commenter mentions this.
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