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Suspension & Braking
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!

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Old 12-30-2019, 11:37 AM   #1
Overboost
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Question for the Suspension Guru Members

I want to get a set of Bilstein B8 front struts from ECS Tuning and have a question for those who have done this conversion. Do the struts come with bump stops under the boots? I can't find anything in my research and was wondering what I need to order. TIA

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Old 12-30-2019, 12:09 PM   #2
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Mine came with them but it was several years ago, I also have asked about bump stops. I think better way just call to ECS and double check ... It will be easier and faster.
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Old 12-30-2019, 04:19 PM   #3
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Question for the Suspension Guru Members

Hey. The damper is inverted and the bumpstops are integrated into the strut itself so no need for any to be mounted.

http://brazeauracing.com/photos/bumpstop02.jpg




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Old 12-30-2019, 06:22 PM   #4
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Originally Posted by KlausH79 View Post
Hey. The damper is inverted and the bumpstops are integrated into the strut itself so no need for any to be mounted.

http://brazeauracing.com/photos/bumpstop02.jpg



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Awesome information Klaus. That is exactly what I needed to know. Thank you
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Last edited by Overboost; 12-30-2019 at 07:13 PM.
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Old 12-30-2019, 07:02 PM   #5
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Thanks again guys, I ordered the set from ECS Tuning. They should be here when I get back from Daytona and Sebring in 2 weeks. I look forward to getting them installed, I noticed on my current struts the bump stops had disintegrated.

https://www.ecstuning.com/b-bilstein...506-slash-7kt/

One last question, I am considering H&R 21mm rear and 27mm front sway bars and would like some knowledge from those who may have gone with these sizes on how it will change the ride as a street car. I realize the chassis roll will be reduced but will the ride be harsh or stiffer in normal street driving conditions?
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Last edited by Overboost; 12-30-2019 at 07:09 PM.
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Old 12-31-2019, 05:01 AM   #6
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Glad to help.

Sway bars do nothing to the ride quality when driving in a straight line. Itís when you start turning and the car leans on the suspension that you feel the difference.


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Old 12-31-2019, 09:20 AM   #7
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Glad to help.

Sway bars do nothing to the ride quality when driving in a straight line. It's when you start turning and the car leans on the suspension that you feel the difference.


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Thank you again for your time to respond Klaus. I understand how the increased sway bar will work in cornering, I do race cars for a living as an engineer but in a straight line, a bump in the road or movement on say the left side will ultimately transfer more of that movement to the right side because of the increased anti roll bar size. (One side goes up, it will pull the other side up with it)

So I guess what I want to know for those that have gone with the 21mm and 27mm larger bars, did you feel a degradation in ride quality in normal street surface driving.

The last thing I want to do is throw $500 at H&R sway bars only to find out I should have left them stock.
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Last edited by Overboost; 12-31-2019 at 09:24 AM.
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Old 12-31-2019, 10:00 AM   #8
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My old E46 wagon I ran our ECS bars (27mm front 21mm rear) paired with Koni Shocks and H&R Springs. Ride on the street was fantastic, very reactive in the corners while being comfortable on the highways. Ride quality on normal communicating was little to no difference before and after sway bars.

-James
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Old 12-31-2019, 01:24 PM   #9
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My old E46 wagon I ran our ECS bars (27mm front 21mm rear) paired with Koni Shocks and H&R Springs. Ride on the street was fantastic, very reactive in the corners while being comfortable on the highways. Ride quality on normal communicating was little to no difference before and after sway bars.

-James
Perfect James, looks like I will be spending some more money with you when I get back from Daytona and Sebring. I have the H&R springs so the H&R sways just make sense although they are a couple hundred more than your ECS set.

Good to know the ride won't suffer so I'm all in. I got a shipping notification from you guys this morning on the Bilstein B8 front struts, they get here Friday but I'm not back until the 14th. Not sure if I can get the wife to install them while I'm gone...
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