Can we have a chat about rear sway bars please? |
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Can we have a chat about rear sway bars please? |
Tdskip |
Mar 11 2018, 10:03 AM
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#1
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
So I scored a 19mm front bar, wondering now about rear bars. This is for a fast road, touring event, ‘74 with a 3.2 build.
I like cars that are tidy in their handling but would prefer not to leave the road backwards... Also looking to confirm that I can always address the real sway bar later because it’s bolt on that does not require any welding work? Take me to school here please! |
Steve |
Mar 11 2018, 10:25 AM
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#2
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914 Guru Group: Members Posts: 5,548 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
I run a rear for the street, but I disconnect it when I autocross.
Tight autocross turns it will cause one of the front wheels to lift. There are sway bar reinforcement plates that are supposed to be welded in the rear trunk. I don’t know if these plates are required for all years. I did not install them on my 75. Some people say don’t run one unless you have a limited slip trans. I ran mine way before I got a LSD. |
Montreal914 |
Mar 11 2018, 10:26 AM
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#3
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Senior Member Group: Members Posts: 1,532 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California |
Front and rear sway bars were factory installed in the front and rear on 73 2.0. 74 and on were an option. You may or may not have the brackets installed on your car depending if your car originally came equipped with them.
If the car didn't, you will need to weld in brackets in the front and back. A few options are available for the front if you do a search. Once these are installed, then the sway bars are bolt on/off. I have a 19mm SB in the front, stock in the back. Stock front suspension, 140lbs springs in the back. My car is has a 2056-4 and is lowed a little. Direzza tires 195/55-15 on 2.0 Fuchs 5.5". I like it but I'm no expert, others will chime in. (IMG:style_emoticons/default/beerchug.gif) |
Tdskip |
Mar 11 2018, 10:30 AM
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#4
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Thank you for the fast responses and ideas/considerations.
What/where am I looking to see if the car has the factory rear mounts already? |
Tdskip |
Mar 11 2018, 10:31 AM
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#5
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
This?
Attached image(s) |
gereed75 |
Mar 11 2018, 10:37 AM
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#6
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Senior Member Group: Members Posts: 1,233 Joined: 19-March 13 From: Pittsburgh PA Member No.: 15,674 Region Association: North East States |
There are a couple of reinforcement plates that are welded into the trunk floor on the factory rear sway installation. There are a number of threads that show the details
Beyond that, it is generally felt that the rear bar is not necessary and maybe detrimental to a good handling fast street/track car. My personal experience (six with 2.4S, 205 street tires, 19 mm front bar, 140# rear springs) is that on track the car is pretty neutral with dynamics more dependent on tire limits and throttle than front rear roll stiffness. Don’t overthink it. Go with the conventional wisdom (good front bar, no rear, medium weight rear springs) and have fun. Oh yea, don’t lift - rear trailing arm suspension/trailing throttle oversteer dynamics still apply!! |
Steve |
Mar 11 2018, 10:38 AM
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#7
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914 Guru Group: Members Posts: 5,548 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
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SirAndy |
Mar 11 2018, 10:41 AM
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#8
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Resident German Group: Admin Posts: 41,581 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
Can we have a chat about rear sway bars please? I like them, a lot of people don't. I run a stock rear bar on my car. (IMG:style_emoticons/default/bye1.gif) |
Tdskip |
Mar 11 2018, 10:46 AM
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#9
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Thanks gentlemen. I have a reasonable amount of welding to do on this car anyway, and I'm wondering if I should put the mail it's in reinforcements in while the engine is out just to be on the safe side. What do you think?
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Steve |
Mar 11 2018, 10:56 AM
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#10
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914 Guru Group: Members Posts: 5,548 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
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ClayPerrine |
Mar 11 2018, 12:20 PM
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#11
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Life's been good to me so far..... Group: Admin Posts: 15,367 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
On both Betty's 4 and my conversion 6, we run both front and rear bars. Betty's is totally neutral through all corners. Mine has some understeer, but that is because I don't have big enough tires on the front.
I would suggest start with the factory sway bar setup, both front and rear. Then adjust from there. |
EdwardBlume |
Mar 11 2018, 01:08 PM
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#12
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914 Wizard Group: Members Posts: 12,338 Joined: 2-January 03 From: SLO Member No.: 81 Region Association: Central California |
Can we have a chat about rear sway bars please? I like them, a lot of people don't. I run a stock rear bar on my car. (IMG:style_emoticons/default/bye1.gif) (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif) I always ran a rear bar on my /4 AX car. Never had lift on the front. Rear bar boxes the front, front boxes the rear. I also had a weld in bar tying the longs. With a 3.2 ???? who knows, you have other variables. |
Tdskip |
Mar 11 2018, 03:30 PM
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#13
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
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Montreal914 |
Mar 11 2018, 03:54 PM
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#14
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Senior Member Group: Members Posts: 1,532 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California |
Actually here:
Google is your friend (IMG:style_emoticons/default/beerchug.gif) And this would be the right side reinforcement plate in the trunk: |
Larmo63 |
Mar 11 2018, 04:03 PM
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#15
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
You can look at my car next time you see it. I have factory mounts as my car is an early '73 appearance group 914S model. (IMG:style_emoticons/default/beer.gif)
I welded the pickups on the consoles and firewall for adjustable struts too. I like having the rear sway bar, what's not to like? |
Tdskip |
Mar 11 2018, 05:13 PM
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#16
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
You can look at my car next time you see it. I have factory mounts as my car is an early '73 appearance group 914S model. (IMG:style_emoticons/default/beer.gif) I welded the pickups on the consoles and firewall for adjustable struts too. I like having the rear sway bar, what's not to like? Thanks for the offer, will do. And to answer your other question - snap oversteer! |
Tdskip |
Mar 11 2018, 10:24 PM
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#17
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
I checked and I don’t have them...
Does the reinforcement at the top simply weld inplace to strengthen the metal on the top side of the mount or are longer mounting bolts used to tie the top and bottom pieces together? |
bbrock |
Mar 12 2018, 08:41 AM
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#18
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
Any chance you could post the dimensions of this? I need to replace mine after repairing a rusted trunk pan but must have tossed the pattern I cut into the scrap pile by mistake. (IMG:style_emoticons/default/headbang.gif) |
Tdskip |
Mar 12 2018, 09:00 AM
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#19
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
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bbrock |
Mar 12 2018, 09:02 AM
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#20
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
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