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Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking

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

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Old 11-03-2008, 03:14 AM   #21
paraklas
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Yes, OEM endlinks for the front although I'm going to upgrade since mine are pretty worn
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Old 11-03-2008, 03:34 AM   #22
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tempting. ... ...
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Old 11-03-2008, 03:43 AM   #23
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I'm been going bar and forth for nearly a year now between these and H&R/Tuner.... the only reason I havent gotten these ones is cause the idea of a hollow sway bar scares me...lol.
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i was like passed out while she's shoving the entire bar in my mouth. :rofl: :rofl:
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Old 11-03-2008, 03:55 AM   #24
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I'm been going bar and forth for nearly a year now between these and H&R/Tuner.... the only reason I havent gotten these ones is cause the idea of a hollow sway bar scares me...lol.
Hollow Vs Solid

Hollow Vs Solid 2
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Old 11-03-2008, 08:06 AM   #25
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You didn't happen to compare the weight of the bars vs. stock, did you?
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Old 11-03-2008, 09:00 AM   #26
paraklas
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Total weight was 26 lbs for the Hotchkis. I'll weight the stock ones when I get back home. Bear in mind, mine are the thinest bars (M54B22 engine)
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Old 11-03-2008, 03:03 PM   #27
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I have from a few different places that sway bar kits for the E46 make a squeaking sound is there any truth to this????
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Old 11-03-2008, 03:21 PM   #28
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After 3 weeks no weird squeaking sounds. I checked them last night and the grease is still around the bushes. The grooves inside the bush will also keep the grease inside for long I hope
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Old 11-03-2008, 03:27 PM   #29
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So whats the conclusion on the Hollow vs solid, dont feel like reading
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Old 11-03-2008, 04:07 PM   #30
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I remember when i got my UUC sways installed, I ALMOST CRASHED! lol

My dumba55 decides to go to the stiffest setting first time, i got way over-confident and almost lost it on a turn.


Learned my lesson 1 year ago, and progressed from soft to stiff. And now id never go back to OEM
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Old 11-03-2008, 09:55 PM   #31
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Well after reading those I am even more scared of hollow ones.

What I got from it is that the only advantage to the hollow ones is the reduced weight.

A smaller solid bar is equilvelant to a larger hollow bar, the thicker the wall is on the hallow one the smaller it has to be to be equivelant solid bar.

Hallow ones, although lighter have reduced strength and increased stress

Quote:
Tube torsion members can be used successfully as swaybars with some benefit in weight
reduction.
As an example, 2 individual, rate equivalent (approximately), common sized generic bars
1100mm long with 300mm blades, one solid 24mm the other tube of 25.4 x 3.96mm (1"
x 0.156***8221 gives a weight reduction of about 2.5kg with about 200g of that as unsprung
mass per wheel.
However the downside to these is the increase in stress levels for equal OD or rate, and
therefore reduced strength. Also the complications seen in manufacture swaybars from
tubular medium, and the importance of geometric control under bending make these more
difficult and expensive to make. The attachment points at the blades can also be a
problem with these swaybar designs.
The additional complications and downsides of hollow bars seem to outweigh their
advantage in overall weight and unsprung mass, which can be seen to only be marginal in
street car application. Even OE manufacturers rarely use this type of design in their
swaybars. However with the right conditions and setups, they can bring some gain in
racing situations, which can require weight reductions to the gram.
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i was like passed out while she's shoving the entire bar in my mouth. :rofl: :rofl:
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Old 11-03-2008, 10:44 PM   #32
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Originally Posted by DanFromTucson View Post
You didn't happen to compare the weight of the bars vs. stock, did you?
Quote:
Originally Posted by paraklas View Post
Total weight was 26 lbs for the Hotchkis. I'll weight the stock ones when I get back home. Bear in mind, mine are the thinest bars (M54B22 engine)
Stock bars from my ZHP weighed about 17 lbs according to my scales. No guarantees on the accuracy but it's probably within a pound +/-, maybe 2. Of course, comparing the weights of bars of dramatically different stiffness isn't a meaningful comparison though. Unfortunately I don't have the weight of my H&R bars.
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Old 11-04-2008, 12:11 AM   #33
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i think H&R being solid is better
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Old 11-04-2008, 12:23 AM   #34
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i want either a set of H&R or Hotchkis soon!
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Old 11-04-2008, 12:30 AM   #35
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Originally Posted by deafboy View Post
Well after reading those I am even more scared of hollow ones.

What I got from it is that the only advantage to the hollow ones is the reduced weight.

A smaller solid bar is equilvelant to a larger hollow bar, the thicker the wall is on the hallow one the smaller it has to be to be equivelant solid bar.

Hallow ones, although lighter have reduced strength and increased stress
Does H&R give any specs for their bars like Hotchkis?

Bar Rates lbs/in (Not Wheel Rate)
Front:
470 lbs/in.
540 lbs/in.
630 lbs/in.

Rear:
475 lbs/in.
540 lbs/in.
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Old 11-04-2008, 12:32 AM   #36
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i want either a set of H&R or Hotchkis soon!
ya me too man, are H&R and hotchks the same thickness in diameter.
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Old 11-04-2008, 01:05 AM   #37
deafboy
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Quote:
Originally Posted by paraklas View Post
Does H&R give any specs for their bars like Hotchkis?

Bar Rates lbs/in (Not Wheel Rate)
Front:
470 lbs/in.
540 lbs/in.
630 lbs/in.

Rear:
475 lbs/in.
540 lbs/in.


havent seen anything.
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i was like passed out while she's shoving the entire bar in my mouth. :rofl: :rofl:
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Old 11-04-2008, 01:06 AM   #38
deafboy
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ya me too man, are H&R and hotchks the same thickness in diameter.
No...hotchkis are a bit thicker.
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Quote:
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Quote:
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i was like passed out while she's shoving the entire bar in my mouth. :rofl: :rofl:
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Old 11-04-2008, 09:12 AM   #39
SeanC
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i think H&R being solid is better
That's what she said.

Quote:
Originally Posted by deafboy View Post
No...hotchkis are a bit thicker.
That's what she said, too.
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Old 11-04-2008, 09:48 AM   #40
DanFromTucson
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Originally Posted by paraklas View Post
Total weight was 26 lbs for the Hotchkis. I'll weight the stock ones when I get back home. Bear in mind, mine are the thinest bars (M54B22 engine)
I assume that's 26 lbs for the package weight with cardboard, styrofoam, etc. correct?

I also assume the post about ZHP bars weighing 17 lbs is just for the bars themselves with no endlinks, brackets, bushings, etc.

Still, if the ZHP bars are 17 lbs, I guess there's not too much weight to be saved anyway.
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