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01-09-2021, 09:25 AM | #1 |
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Anyone using Powerflex Poly Tension Strut/Thrust Arm Bushings?
I see a lot of info on the monoballs for the thrust arms (aka tension strut), but next to nothing about polyurethane bushings.
It seems that about half of those using monoball bearings get increased noise, and half do not. I would rather not spend $300-$500 to find out that there is in fact increased noise. Is anyone using the poly bushings instead? How much did they improve steering feel and response for you? I do plan on having the steering coded to GTS specs later, but I will most likely do these bushings while I am doing dampers and springs in the next few weeks. Any input is appreciated. Thanks. |
01-09-2021, 12:50 PM | #3 |
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Thanks. That seems to be the consensus, but I have seen a few posts around here complaining of noise. I believe most of them have been the Fall Line monoballs.
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01-12-2021, 08:02 PM | #4 |
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I had them on my e92 m3 and they were great, , no noise and the front end was more responsive, I have a set of the offset version for my f80 to put in, for the increased camber and caster.
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01-12-2021, 09:03 PM | #5 | |
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Maybe you should look into the rogue engineering bushings. |
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01-13-2021, 12:10 PM | #6 | |
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I'll probably go with the TMS monoballs for this. They are <$300, so if they do make noise, I won't be as upset if I have to take them back out. |
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01-27-2021, 10:59 AM | #9 |
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OP: I'm in the same boat as you too. - I was also considering monoball from Dinan as well. a bit more expensive but I've had them on my RTAB on E46M3 and had zero noise/issues etc. it's possible we've gotten to the point where the newer versions of these monoballs aren't as noisy and the older versions were. or it could be installer specific.
Also if you have a ZCP - the GTS coding I'm not sure if I would call it an improvement. I think it really just created a half step more stiffer than before so everything is (+) which I kind of dislike. Steering feel is lacking in this chassis so hopefully these thrust arm bushings help. I run the car in comfort 100% of the time. Also does anyone have a link for any one that makes these with these already pressed in?
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Danny
Bay Area, CA Last edited by m3elmo; 01-27-2021 at 12:14 PM.. |
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01-28-2021, 04:27 PM | #10 | |
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The steering felt like marshmallow to me before doing those two things. If yours is still lacking feel after coding, the monoballs are definitely worth a shot. Turner Motorsport sells a set of thrust arms with their monoballs already pressed-in. The cost for their ready-made version is less than Dinan charges for the monoballs alone, if I remember correctly. |
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01-28-2021, 04:29 PM | #11 |
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01-28-2021, 07:01 PM | #13 |
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01-29-2021, 10:12 AM | #15 | |
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monoballs here we come! - if installed properly I'm thinking this shouldn't require an alignment afterwards. edit - would this also fit the bill: https://www.turnermotorsport.com/p-5...treet-version/
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Bay Area, CA Last edited by m3elmo; 01-29-2021 at 12:04 PM.. |
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01-31-2021, 09:58 AM | #16 | |
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They do make a tension strut like that, but I would stay away from exposed (non-sealed) rod ends like that. They dont usually last long on the street, since there is nothing to keep moisture and debris from getting into the joint and ruining it over time. And when those joints fail, they sound like absolute shit. You shouldn't need an alignment after installing the tension strut monoballs, but it would depend on the condition of the original bushings at the time that the last alignment was done. If the original bushings were torn or worn-out the last time it was aligned, that may have affected the toe when they adjusted it. If that's the case, putting the new monoballs in will change the alignment (probably caster) and the toe will therefore also change. If the bushings are still healthy (mine were still stout at 73k miles) it probably won't change much, if at all. Either way, if it hasn't been aligned in a while (more than a year) it's worth at least having it checked. Toe will change with one decent pothole or bump in the road, so you never know. |
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01-31-2021, 10:21 PM | #17 |
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I have the "street" front control arms non-offset caster option Powerflex bushings on my car for 2-weeks now.
Hard to isolate its individual impact because I have all of the powerflex bushings made for the f80 installed, except the 2 rear sway bar bushings, along with the Turner Diff mount bracket, to provide an accurate assessment of just those bushings alone. My single rear Diff bushing was cracked but since the drivetrain was coming off (upgrading clutch) I decided to do as many of these bushings as possible. Car drives and feels brand new overall BUT I have not pushed her to the max or at the track yet due to inclement weather.
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02-26-2021, 12:56 PM | #18 |
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I run the SPL solid excentric thrust arm bushings. They increase noice, because they are solid. But steering input and road feel is much better. Harscher over railroad crossings and such but that's how it is. You have to choose. Why people doesn't feel much difference with Powerflex is because they are only 18% stiffer than a stock bushing.
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