 Indexing A arms |
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| bajafreaks |
 Sep 26 2026, 02:14 PM
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#1
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Member  Group: Members Posts: 165 Joined: 7-February 14 From: Gardnerville, Nevada Member No.: 16,969 Region Association: Northern California  |
I'm in the process of installing new a arm bushings and curious about the angle degree requirement. Ian Karr says 21 degrees, I did mark my brackets before taking the old bushings out (a arm assembly out of the car) and the original angle of the brackets are greater than 21 degrees, closer to 40+/- which is a pretty big difference. So when installing new bushings etc. should I go with the 21 or the original number?
I'm also installing new torsion bars stock size, anything I need to know besides just sliding them in, keeping left and right as needed? Thanks |
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| mepstein |
Sep 26 2026, 02:41 PM
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#2
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914-6 GT in waiting Group: Members Posts: 20,920 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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QUOTE(bajafreaks @ Sep 26 2026, 04:14 PM)  I'm in the process of installing new a arm bushings and curious about the angle degree requirement. Ian Karr says 21 degrees, I did mark my brackets before taking the old bushings out (a arm assembly out of the car) and the original angle of the brackets are greater than 21 degrees, closer to 40+/- which is a pretty big difference. So when installing new bushings etc. should I go with the 21 or the original number? I'm also installing new torsion bars stock size, anything I need to know besides just sliding them in, keeping left and right as needed? Thanks Grease the splines and light grease over the entire bar. |
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| Superhawk996 |
Sep 26 2026, 03:55 PM
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#3
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914 Guru Group: Members Posts: 8,088 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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Set at 21 degrees. Originals are worn and slipping.
The angle is established to be near curb height. If you set at original 40 or so you’ll have a ton of preload in the bushing at curb height. Not good for bushing durability and will cause a harsh ride. |
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