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Kaos
Joined: 13 Oct 2003
Posts: 76
Location: Detroit
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 Posted: Thu Jun 07, 2007 12:48 pm Post subject: 924S Custom Front Swaybar Pics |
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I am starting a new thread for pictures of the swaybar mentioned in my autocross pictures thread.
These are some pictures of the swaybar setup that I made for my 1988 924S. I did the design and most of the fabrication, leaving the welding to a professional at my place of employment.
Components:
- 1-1/4" OD x 0.095" wall swaybar tube - Off the shelf from Speedway Engineering
- 48 Spline swaybar arms. Speedway Engineering, modified by cutting and welding for length and angle. These are probably a little hefty, and could go on a diet.
- 7/16" Teflon lined rod ends - for top link
- 7/16" Telfon lined high misalignment rod ends - for bottom link
- 1-1/4" ID Aluminum shaft collar - to prevent swaybar lateral movement
- 1-1/4" ID Energy suspension swaybar bushings and brackets- Bought these at the local Autozone. Modified with a small gusset welded on the edges
- Custom bracket to connect the swaybar bushings to the frame - made of 1-1/2" x 3/4" rectangular steel tubing. Connects to the two standard swaybar bracket bolts on the frame, as well as the front crossmember bolt. My measuring was a little off when I designed these, which explains the washers under the front crossmember bolt (I think you can see these in the pictures). A slightly longer crossmember bolt was required.
- Custom bracket to connect the rod ends to the lower control arm - made of 1-1/2" Angle iron. Connects to the stock sway bar holes in the lower control arm.
Well, thats it. I'm sure some more pictures of the system off of the car would be more helpful, but I'm not going to take it off the car any time soon.
Jon A. |
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macBdog
Joined: 16 Aug 2004
Posts: 1111
Location: Brisbane, Australia
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| Posted: Thu Jun 07, 2007 1:24 pm Post subject: |
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Thanks for those pics, I get it now. Looks like some heavy duty machinery.
_________________
1979 931 with a 350 chev
1973 911E with EFI
| p-talk wrote: | I'm still convinced the word 'Porsche' makes people crazy in all kinds of ways  |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Thu Jun 07, 2007 5:00 pm Post subject: |
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If that adjustment gives you the stiffness you want, you might consider a thicker bar, so your drop links can be closer to vertical.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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PORSCHEV
Joined: 02 Nov 2002
Posts: 1901
Location: Cedar Lake Nova Scotia, Canada
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| Posted: Thu Jun 07, 2007 7:54 pm Post subject: |
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For me the bottom line is...how did you find the performance. Was it noticeable? Looks like some nice machine / fab work!
_________________
1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.
1978-#53 "D" track racer. |
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Kaos
Joined: 13 Oct 2003
Posts: 76
Location: Detroit
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| Posted: Thu Jun 07, 2007 9:04 pm Post subject: |
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| Rasta Monsta wrote: | | If that adjustment gives you the stiffness you want, you might consider a thicker bar, so your drop links can be closer to vertical. |
Here is the other thread I mentioned:http://www.924board.org/viewtopic.php?t=22317
I have two different bars to choose from; the 1-1/4"OD x 0.095" wall, and the 1-1/4" x 0.125" wall. I have tested them both, and the 0.125" thick bar is a little too stiff for the rest of my setup (stock M030 springs and rear sway bar per the autocross ruleset). Maybe If I ever jump up a class, and use stiffer springs, I will need to revisit the swaybar tuning.
I also like the fact that I can reduce the stiffness for slippery conditions - surface condition, temperature, rain/dry.
| PORSCHEV wrote: | | For me the bottom line is...how did you find the performance. Was it noticeable? Looks like some nice machine / fab work! |
No machine work was required. Just a sawzall, bandsaw, grinder, drillpress, and welder.
As for the performance to my car, it definately helps. The idea is to stiffen the roll resistance of the front end so that the front tires have better camber (are more parrallel to the ground) during cornering. The stiffer front bar also helps to reduce any inside rear wheelspin, by transfering more weight at the front. How all of this translates into better performance for anyone else's vehicle setup, I cannot say. I haven't tested this on any car other than my own, but I do know it works pretty well for me (for autocross duty - I haven't used it at higher speeds on a racetrack). I have already tried the stock M030 swaybar (23mm?), and the Porsche 944 turbo front sway bar (27mm). |
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924RACR
Joined: 29 Jul 2001
Posts: 9075
Location: Royal Oak, MI, USA
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| Posted: Thu Jun 07, 2007 9:40 pm Post subject: |
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Very nice work, looks excellent! I've heard some complain about the quality of the Weltmeister bars, this looks like a great improvement...
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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genikz88
Joined: 29 Mar 2006
Posts: 64
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| Posted: Fri Jun 08, 2007 11:52 am Post subject: |
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That is fantastic. Thanks for posting.
Let me know if you decide to produce anymore of the brackets used to bolt the bar to the crossmember/chassis! The rest looks off the shelf stuff. GREAT idea you got going on there!
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Chris
'88 924S |
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