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01-03-2014, 12:11 PM | #23 | |
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01-04-2014, 11:19 PM | #25 | |
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For a street car I would try the Powerflex or similar product for the diff bushings.
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02-17-2014, 02:54 PM | #26 | |
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I only track my car few times in year, but mosty on street. with my kw coilover and solid subframe bushing.. I love it. but where I am at, road is pretty smooth. However, if I live in like NY or PA. massive of bumps and road construction.. yes, it will get annoying little. definitly makes the car tighten up how it drives for sure.
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02-22-2014, 05:18 AM | #27 |
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Drives: 2010 E92 M3 6MT
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I got the solid delrin rear diff mounts and replaced the engine mounts with race mounts as well. "was snapping rear diff bolts is reason"
Car is much more grounded and responsive with farrr less wheel hop. Downside is you do get a nice whine inside the cabin, even over exhaust and music. Goes away at around 80mph though, not annoying but not wanted noise either. Our cars come with crappy ass squishy diff mounts though that do need to be replaced even if you do a little aggressive street driving.
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02-23-2014, 05:17 PM | #28 |
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Would changing out the rear subframe bushings for solid mean that stresses that otherwise would have been dissipated by the flexible bushings might now be transferred to elsewhere in the chassis and does the chassis therefore have to be reinforced?
I have bought a set of the bushings and am about to get them fitted. I can deal with a little more NVH as the M3 is too soft and comfy in my opinion but I don't want to find that my mounting points are cracking down the line... Does anybody know whether it's ok to simply fit the bushings and not require any other work? My driving is 90:10 street to track but I do drive quite hard on the street.. Thanks Jack |
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02-23-2014, 06:22 PM | #29 | |
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Again, the M3 GTS, current M5/6 all have a completely solid subframes straight from BMW.
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02-24-2014, 08:39 PM | #30 |
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Malek@MRF
Is there any kind of upkeep or maintenance solid aluminum subframe bushings require for cars that see all four seasons to ensure minimal added NVH over stock?
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02-27-2014, 02:48 PM | #31 | |
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Once these 2 items are installed into the rear carrier, the only maintenance for the rear end and differential will be other rubber bushed parts, the differential output shaft seals along with the M Limited Slip. The solid bushings and differential bushings will not accelerate the wear on any other items, in fact it will strain the unibody less and will alleviate the strain placed on the differential mounts themselves. Feel free to ask as many questions you need either here or by PM. -Malek
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03-04-2014, 11:45 AM | #33 |
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You have a PM.
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03-04-2014, 12:16 PM | #34 | ||
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03-04-2014, 12:32 PM | #35 |
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A corner balance is not required, an alignment is. Mainly to ensure that everything is still correct and indexed correctly. We include the alignment with the procedure anyway. We have done approximately 20 cars now just locally.
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03-04-2014, 01:15 PM | #36 |
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Rear subframe bushings price shipped to L6W 3R6 - Ontario, Canada
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03-05-2014, 09:26 AM | #37 |
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This is a great mod!!
I had the MRF aluminium rear subframe bushings and Turner Delrin differential bushings fitted yesterday and I love it... There's no doubt that the diff is now noisier. It whines a bit and there is more noise when changing gear but the back end feels better when accelerating hard, especially out of corners. The car feels more raw overall and this will either be a good thing or bad thing depending on whether you view the E9x M3 as a race car with road comforts (then you will love it) or as a luxury road car with sporty leanings (then you might hate it). I would recommend Malek as somebody to deal with. I had lots of stupid questions and he dealt with them all. He also spoke to my installer to guide them. Delivery to the UK was very quick (although not cheap!). Jack |
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03-06-2014, 08:07 PM | #38 | |
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03-07-2014, 12:22 PM | #39 |
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03-07-2014, 12:40 PM | #40 |
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Hey Malek,
If i go with the solid rear sub-frame and to avoid the diff noise can i use a powerflex (poly) whatever its called? or do you recommend using at lease a Derlin diff bushing?
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03-07-2014, 01:49 PM | #41 | |
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It's really a subjective matter though. If one is willing to deal with a louder exhaust, then dealing with some more diff whine shouldn't be a concern.
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03-07-2014, 02:19 PM | #42 | |
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Also, did you use Birds? And how long did the job take pls? |
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03-07-2014, 02:55 PM | #43 | |
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Sorry for all the questions Malek
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03-07-2014, 03:06 PM | #44 |
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The diff whine wouldn't be louder than that setup. Some cars whine more/less than others depending on the diff oil that is being used (FM vs. non FM fluid).
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