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Letís talk Front and Rear Sway Bars

Old 01-07-2019, 09:44 PM
  #16  
Gbos1
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Originally Posted by Steve Weiner-Rennsport Systems View Post
The only bars we use here are the factory RS ones since this is the prime tool for adjusting the understeer/oversteer balance of the car.

These are 25mm & 20mm bars, respectively and ride quality is not adversely affected, IMHO. Shocks make a bigger difference.

Naturally, your settings will affect the stiffness.
Steve, was looking at the RS Sways from Elephant Racing and they state 23mm for RS front not 25mm? Also if I get the front and rear RS sways do I need new drop links? Adjustable ones? Thanks!
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Old 01-08-2019, 12:31 PM
  #17  
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Im looking for a set of RS Sway bars also. A lot of stock sets out there, but havent seen any M030 or RS bars out there.
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Old 01-08-2019, 12:44 PM
  #18  
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Factory 20mm on both axles. Pretty good bang for the buck to reduce some of the understeer, which is all I was after.
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Old 01-08-2019, 12:55 PM
  #19  
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Originally Posted by Gbos1 View Post


Steve, was looking at the RS Sways from Elephant Racing and they state 23mm for RS front not 25mm? Also if I get the front and rear RS sways do I need new drop links? Adjustable ones? Thanks!
your front stock C4 drop links will be fine. The rear ya might wanna just make up a set of adjustable drop links. Very easy to order items at Speedwaymotors, and then get correct bolts at local hardware. About $40-50 bucks, and done!
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Old 01-08-2019, 01:22 PM
  #20  
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Originally Posted by jimbo3 View Post
Factory 20mm on both axles. Pretty good bang for the buck to reduce some of the understeer, which is all I was after.
Would this make a base C2 oversteer too much (1995 stock shock/spring, 18Ē twists)?
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Old 01-08-2019, 01:28 PM
  #21  
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Originally Posted by Sigs993 View Post


Would this make a base C2 oversteer too much (1995 stock shock/spring, 18Ē twists)?
No. Change is modest. Still understeers.
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Old 01-08-2019, 01:30 PM
  #22  
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Thank you.
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Old 01-09-2019, 11:31 AM
  #23  
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I would love to get the RS sway bars, however with my driving skills it's not likely I would notice the difference from the M030 bars.

I hope to add the M030 before too long.
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Old 01-09-2019, 01:10 PM
  #24  
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Originally Posted by cgfen View Post
I definitely found my car to be leas compliant when I increased the roll stiffness with the ARBs
Not implying bigger bars donít exact a toll. Just that reducing roll through the bars, without having to stiffen the corners, is likely less of an impact on public roads. My car is not horrid on moderate roads. But on anything from properly constructed/maintained roads and up, its pretty surgical. Iíll take the inconvenience of avoiding poor routes, for the reward I get from doing so. :-)
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Old 01-09-2019, 01:11 PM
  #25  
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Im running PSS10s and RS bars on the middle setting - love the setup daily and track work - i need to play around with the settings soon - what are others running\experiencing?

phil.
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Old 01-09-2019, 03:10 PM
  #26  
Steve Weiner-Rennsport Systems
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Originally Posted by Gbos1 View Post


Steve, was looking at the RS Sways from Elephant Racing and they state 23mm for RS front not 25mm? Also if I get the front and rear RS sways do I need new drop links? Adjustable ones? Thanks!
The PET (and factory spec book) is incorrect: 993 RS front bars are 25mm. The rear one is 20mm (TRG ones were 22mm which is too stiff for a street car).

I always use the RS droplinks in street cars. Race cars get adjustable ones.
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Old 01-09-2019, 04:30 PM
  #27  
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Originally Posted by element View Post
Im running PSS10s and RS bars on the middle setting - love the setup daily and track work - i need to play around with the settings soon - what are others running\experiencing?

phil.
On the C4S for street driving I use 4F/5R with the RS bars in the middle. Tire pressure 32F/42R, the door tag pressure of 36F/44R is great if your going down the autobahn at 150+. The suspension is full RS except the Bilsteins. Play around with it, what works for me in the canyons may not for the next person.
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Old 01-09-2019, 06:47 PM
  #28  
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My 96' Carrera came with the US M030 option. I remember when I replaced the coil-overs I noticed the links to the bars were not adjustable but the attachment purchase for the links on the H&R strut body was to some degree.
It also looked like the loading of the bars once the car was on the ground seems like it would vary by ride height all things being equal.
What are the rules on pre-loading the bar properly or is it only loaded correctly when the ride height is set to the original OE specification or there about?
how are the bars adjusted for these rules?
Enquiring minds want to know!
ANdy
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Old 01-09-2019, 08:13 PM
  #29  
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Originally Posted by Steve Weiner-Rennsport Systems View Post
The PET (and factory spec book) is incorrect: 993 RS front bars are 25mm. The rear one is 20mm (TRG ones were 22mm which is too stiff for a street car).

I always use the RS droplinks in street cars. Race cars get adjustable ones.
Thanks Steve!
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Old 01-09-2019, 08:19 PM
  #30  
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Originally Posted by il pirata View Post
On the C4S for street driving I use 4F/5R with the RS bars in the middle. Tire pressure 32F/42R, the door tag pressure of 36F/44R is great if your going down the autobahn at 150+. The suspension is full RS except the Bilsteins. Play around with it, what works for me in the canyons may not for the next person.
I run 6 front, 7 rear on the PSS10. Swaybars are in the middle setting, though I still need to play with it a bit. I run 235/275 RE71r and pressure is 28/29 cold.
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