Suspension and Chassis Questions about your suspension? Need chassis advice?

Two quick sway bar questions

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Old Aug 9, 2002 | 10:07 PM
  #1  
Mikes86SC's Avatar
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From: Long Island, NY
Car: 1986 IROC-Z
Engine: 5.0 TPI
Transmission: 700R4
Two quick sway bar questions

Two simple questions about installing sway bars.

First, should the front brackets be a perfect "U" shape, or slightly curved towards the front of the car?

Second, when installing new end links with polyurethane bushings, how much torque? Correct me if I'm wrong, but polyurethane bushings don't compress like rubber bushings.
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Old Aug 10, 2002 | 10:15 AM
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Mikes86SC's Avatar
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From: Long Island, NY
Car: 1986 IROC-Z
Engine: 5.0 TPI
Transmission: 700R4
Please guys, I'd like to get this finished.
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Old Aug 10, 2002 | 02:30 PM
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camaroguy99's Avatar
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The brackets should be pretty much U shaped, does the U bolt fit into the top part of the bracket? If so I guess put the slightly curved part toward the front. As for the torque it's not much. About 15 lbs. Mine came with nylock nuts, so I just tighened them down snug then about another turn or so. Remember when your're doing the endlinks. Make sure the suspension is loaded when tighening. This is very important.
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Old Aug 11, 2002 | 09:13 PM
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From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
U-shaped. 13 ft-lbs (18 N-m). Since you have to replace one, this is something to consider...

https://www.thirdgen.org/techbb2/sho...hreadid=122861

Lon
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Old Aug 12, 2002 | 11:20 AM
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
Tighten the end links down until the bushing is almost flush with the side of the washer. I don't kow how much torque this will equal, though. Just don't tighten them down to where the bushing is squishing out the sides.

Ed
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Old Aug 13, 2002 | 02:46 PM
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WS6 Berlinetta's Avatar
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what happens if the endlinks are too tight?

R
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Old Aug 14, 2002 | 08:15 AM
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
My guess would be premature failure of the bushings from undue stress placed on them by excessive compression...My best Haynes manual explaination.

Ed
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Old Aug 16, 2002 | 08:14 AM
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From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Originally posted by ebmiller88
Tighten the end links down until the bushing is almost flush with the side of the washer. I don't kow how much torque this will equal, though. Just don't tighten them down to where the bushing is squishing out the sides.

Ed
I see you aren't using GM 1LE bushings Ed. The 10221779 1LE link assembly (aka end link kit) includes nylon bushings with a molded lip that the washer sets in. Just follow the torque recommendations. Yes you'll deform them badly if they are too tight. I don't know if that will cause a problem, such as binding.

Lon
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Old Aug 16, 2002 | 10:45 AM
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
Nope, ES polyurethane.

Ed
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