| Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation | |
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+40Johnny5 69GSColorado al_roethlisberger highwaywarrior charlieRobinson RidzRiv Natesriv pbrktrt J. Chris Davis flyineagle96 brutusk1 Jamax 97 park ave ghpcnm Karma LARRY70GS Ash albertj Abaddon robotennis61 TonySmooth89 sdconcepts Mr.Riviera DEMonte1997 EatDirtFartDust turtleman napalmpt Rickw Buapo deekster_caddy Face ewolfe0050 jax95riv Jack the R oldsman105 racinfan 1998 Riv 98riv Jason AA 44 posters |
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charlieRobinson Expert
Name : Charlie Age : 39 Location : Knoxville, TN Joined : 2011-05-17 Post Count : 3924 Merit : 31
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Oct 22, 2013 10:24 pm | |
| - Jason wrote:
The largest front bar gm offered for the G-body was 30mm (FE2/FE3). T I believe it is safe to assume a wall thickness between .125" and .25" for the stock STS rear FE3 bar. ==== edit: stiffness figures edited to account for stock bars being hollow =======
for reference: assuming all OEM rear bars have a 3mm wall thickness; and assuming all OEM front bars have a 5mm wall thickness
30mm front is 27.5% stiffer than the 28mm stock front 20mm rear (FE2) is 76.5% stiffer than the stock 17mm rear 22mm rear bar (FE3) is 144.9% stiffer than the stock 17mm and 23.1% stiffer than the FE2 20mm rear
02018 1.25" (31.75") front ADDCO: 99.4% stiffer than the stock 28mm bar or 56.3% stiffer than the 30mm bar. This is considering they have the same overall and lever length. The addco had a very slightly different bend to them, but it should not affect stiffness dramatically. 02015 7/8" (22.2mm) rear ADDCO: 254.2% stiffer than the stock 17mm bar, 62.7% stiffer than the 20mm bar or 44.6% over the FE3 rear bar
Sorry if I missed it somewhere, but how does the F41 front bar differ from the FE2/FE3 front bars? Is is stiffer or not? Thank you! | |
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AA Administrator
Name : Aaron Age : 47 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18452 Merit : 252
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Oct 22, 2013 10:28 pm | |
| _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
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charlieRobinson Expert
Name : Charlie Age : 39 Location : Knoxville, TN Joined : 2011-05-17 Post Count : 3924 Merit : 31
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Oct 22, 2013 10:44 pm | |
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charlieRobinson Expert
Name : Charlie Age : 39 Location : Knoxville, TN Joined : 2011-05-17 Post Count : 3924 Merit : 31
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Wed Oct 23, 2013 10:51 pm | |
| Has anyone had any issues with the bigger bars in terms of ripping bolts out or anything?
Has anyone actually welded them in on the Riv?
Can we be sure that the addcos are completely safe bolted up? | |
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deekster_caddy Master
Name : Derek Age : 52 Location : Reading, MA Joined : 2007-01-31 Post Count : 7717 Merit : 109
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Thu Oct 24, 2013 10:43 am | |
| - charlieRobinson wrote:
- Has anyone had any issues with the bigger bars in terms of ripping bolts out or anything?
Has anyone actually welded them in on the Riv?
Can we be sure that the addcos are completely safe bolted up? My Addco front bar tore the metal off the subframe around the sway bar bushing bolts. As far as I know I'm the only one who had that problem. I also had 8" wide rims and 255s and cornered hard, often. (had a favorite offramp on my daily commute...) | |
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al_roethlisberger Junkie
Name : Al Roethlisberger Age : 55 Location : Sanford, NC Joined : 2013-03-12 Post Count : 960 Merit : 24
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Thu Oct 24, 2013 6:08 pm | |
| Aaron had some issues, along with someone else, with the supplied bushing bracket deforming which some speculated might contribute over time to damaging the frame if left undetected.
But Aaron solved that with high performance UMI bushings brackets that appear to have held up.
If I were installing the Addco front bar, that $100 set of UMI bushings would be part of the package as insurance.
Al
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AA Administrator
Name : Aaron Age : 47 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18452 Merit : 252
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Thu Oct 24, 2013 8:56 pm | |
| You don't want to weld brackets or fasteners to the subframe - the bushings can't be removed when they wear out. If you did weld, the bushings would melt anyway.
If you push the car hard in corners, the way to be completely safe is to use UMI brackets, or something similar (fender washers might work). The stamped steel rackets supplied by ES and Addco can deform under extreme cornering. If you just want more solid cornering feel and don't intend to push the car that hard, the supplied brackets will probably hold up just fine, at least for a while. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
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deekster_caddy Master
Name : Derek Age : 52 Location : Reading, MA Joined : 2007-01-31 Post Count : 7717 Merit : 109
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Thu Oct 24, 2013 11:29 pm | |
| FWIW the brackets were not deformed on mine. They had the steel plate underneath to hold everything in place, and looked fine. It wasn't until we got under the car while bouncing up and down on it that we figured out the subframe itself was moving! Tore the threading and surrounding metal right out of the subframe. I'm not sure the UMI brackets AA used would have made any difference, I think the subframe was getting thin from New England salty winter roads. | |
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AA Administrator
Name : Aaron Age : 47 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18452 Merit : 252
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Oct 25, 2013 7:08 am | |
| If any issue with the bolts/frame, I think it would be fine to drill through the bottom of the cradle and use longer bolts + nuts/washers to mount the brackets more securely. Mine are holding fine, but that's what I'd do if needed. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
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charlieRobinson Expert
Name : Charlie Age : 39 Location : Knoxville, TN Joined : 2011-05-17 Post Count : 3924 Merit : 31
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Oct 29, 2013 8:53 pm | |
| ok ok.
Got to go test out the new suspension set up.
I couldnt help my fits of uncontrollable laughter! THIS IS AWESOME!
I knew the rear addco bar would make a difference but I didnt expect it to be so perfect! The car 'feels' lighter when turning. You know what I mean? It just snakes around turns. It's incredible. I'm doing everything I can to stay inside tonight and not go for drive.
I really want to experiment with this set up for a bit and then try to lower the rear and see what effect that has on the set up. I am just a wuss and afraid of bottoming out with these dumb max air shocks and messing something up.
Robo, dont even say coil overs. I know, man. I know. | |
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Johnny5 Fanatic
Name : Going Nowhere Fast Age : 38 Location : Louisiana Joined : 2013-09-11 Post Count : 459 Merit : 1
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Oct 29, 2013 10:51 pm | |
| I don't get much of a choice when it comes to 96 suspension robo and these coil over conversions are pretty damn expensive but they seem like an ultimate choice im performance | |
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98riv Moderator
Location : USA Joined : 2007-01-14 Post Count : 995 Merit : 30
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Feb 11, 2014 4:10 pm | |
| I installed the front addco bar today while changing the sub frame bushings. Don't think it would fit if you don't drop the rear of the subframe. I just need to buy the rear one. From the short drive, the car does seem to handle better. I think the car rides a little rougher, but it might be in my head. I haven't driven the Riv in a while so I don't know how much the bar will change the ride. I ended up using the supplied bushing with the addco bar. I might change it for the UMI brackets and bushing sometime. I was able to reuse my Moog endlinks (they are only about a year old or so). _________________ 1998 Supercharged Riviera - Custom CAI, Alpine spx-13ref, Infinity 6x9's, Alpine 4 Channel Amp, Kicker KX3, Silverstars, STB, Hawk Brake Pads, Monroe Air Shocks, KYB GR2
Last edited by 98riv on Fri Feb 28, 2014 4:54 pm; edited 1 time in total | |
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matt270avian Expert
Name : Matt Age : 28 Location : Frederick, MD Joined : 2012-01-15 Post Count : 2681 Merit : 54
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Feb 11, 2014 4:29 pm | |
| Wait until you do the rear bar. Makes things really fun, but like all the other mods it just becomes normal after awhile. | |
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robotennis61 Guru
Name : robotennis Age : 63 Location : las vegas Joined : 2007-12-17 Post Count : 5562 Merit : 143
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Feb 11, 2014 5:07 pm | |
| - matt270avian wrote:
- Wait until you do the rear bar. Makes things really fun, but like all the other mods it just becomes normal after awhile.
Yup.So true. | |
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AA Administrator
Name : Aaron Age : 47 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18452 Merit : 252
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Tue Feb 11, 2014 6:31 pm | |
| - Quote :
- I ended up using the supplied bushing with the addco bar. I might change it for the UMI brackets and bushing sometime. I was able to reuse my Moog endlinks (they are only about a year old or so).
If you stay with the Moog links, your Addco bushings and brackets should be adequate. I never had an issue until I upgraded to ES poly end links. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
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98riv Moderator
Location : USA Joined : 2007-01-14 Post Count : 995 Merit : 30
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 9:09 am | |
| I noticed that my car wants to follow the ruts in the road now that I have changed the front sway bar. It seems like I have to fight with the steering wheel more now. It is fine on the interstates, but not in town. Is this common with a new sway bar or is something else going on? I also recently got my alignment changed. _________________ 1998 Supercharged Riviera - Custom CAI, Alpine spx-13ref, Infinity 6x9's, Alpine 4 Channel Amp, Kicker KX3, Silverstars, STB, Hawk Brake Pads, Monroe Air Shocks, KYB GR2
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J. Chris Davis Aficionado
Name : Chris Davis Age : 43 Location : Dixon, IL Joined : 2010-04-14 Post Count : 1008 Merit : 19
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 9:24 am | |
| Mine does that too. I don't remember if it was after the sway bar install or after I got new tires. I haven't done it yet, but thought maybe a wheel alignment might help. Planning on it this spring. | |
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robotennis61 Guru
Name : robotennis Age : 63 Location : las vegas Joined : 2007-12-17 Post Count : 5562 Merit : 143
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 9:28 am | |
| A stiffer sway bar will allow the car to track more.Less compliance = more response imo | |
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Abaddon Expert
Name : Scott Location : Macomb, Michigan Joined : 2010-02-24 Post Count : 4316 Merit : 185
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 9:36 am | |
| My Riv does the same thing since the sway bars were installed. Throw some 245 wide tires on there too...makes it way worse. The fatter bar is trying to keep the car flat instead of allowing it to flex from side-to-side. | |
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AA Administrator
Name : Aaron Age : 47 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18452 Merit : 252
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 9:42 am | |
| This is normal with stiffer sway bars. You'll notice it pulls with the crown of the road more, too. It's just a function of the bar transferring the spring rate from one side to the other. If you roll over a road imperfection that's even across the road, the bar has no effect, but an imperfection only on the left side will be felt on the right side as well. The result is a heightened sense of steering response, to the point where the wheel can actually move on its own, because the stiffer bar is now applying force to the opposite wheel instead of only one. Definitely keep your hands on the wheel when going over bumps or rough roads, but I've got used to it. On the plus side, when you are on smooth roads there is a heightened sensitivity for feeling the road, and better turn-in/steering response. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
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deekster_caddy Master
Name : Derek Age : 52 Location : Reading, MA Joined : 2007-01-31 Post Count : 7717 Merit : 109
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 1:55 pm | |
| I noticed it on mine too. I also had 255s on it which made it worse. | |
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matt270avian Expert
Name : Matt Age : 28 Location : Frederick, MD Joined : 2012-01-15 Post Count : 2681 Merit : 54
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 6:15 pm | |
| I did notice the symptoms you are describing with my rear bar. Not that big of a deal, but it is there. | |
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98riv Moderator
Location : USA Joined : 2007-01-14 Post Count : 995 Merit : 30
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 6:24 pm | |
| Thanks everyone! It is kind of annoying with the roads we have in town and this winter hasn't helped any. I guess I am used to the softer suspension. I might go back to stock and sell the bar. I need new tires and rims, so the extra money would help in that area. _________________ 1998 Supercharged Riviera - Custom CAI, Alpine spx-13ref, Infinity 6x9's, Alpine 4 Channel Amp, Kicker KX3, Silverstars, STB, Hawk Brake Pads, Monroe Air Shocks, KYB GR2
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charlieRobinson Expert
Name : Charlie Age : 39 Location : Knoxville, TN Joined : 2011-05-17 Post Count : 3924 Merit : 31
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 6:42 pm | |
| I've noticed that turning the steering wheel seems a little stiffer after I put in the front sway bar.
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robotennis61 Guru
Name : robotennis Age : 63 Location : las vegas Joined : 2007-12-17 Post Count : 5562 Merit : 143
| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation Fri Feb 28, 2014 7:29 pm | |
| - 98riv wrote:
- Thanks everyone! It is kind of annoying with the roads we have in town and this winter hasn't helped any. I guess I am used to the softer suspension. I might go back to stock and sell the bar. I need new tires and rims, so the extra money would help in that area.
Well,all things considered,It's preferable to swap out the rear bar instead of the front.Where front drive cars are concerned. | |
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| Subject: Re: Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation | |
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| Write-Up: Front/Rear (Addco) Stabilizer/Sway Bar Installation | |
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