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Join Date: Nov 2011
Location: Portland OR
Posts: 127
Questions on setting spring plate angle on a 1989 3.2 Cabriolet

Hi All,

I have a 1989 3.2 Carrera Cabriolet. I just finished installing Elephant Racing rubber replacement bushings on my spring plates.

I have accessed the 911 Spring Plate Angle Calculator on rennlight.com so I can calculate the correct spring plate angle for re-assembly.

A few questions: What is the correct weight to plug into the calculator? The curb weight? Or the curb weight adjusted upward by a full tank of fuel and driver's weight?

The Bentley manual says to set the angle at 32 degrees. Should I just go with that?

Does anyone have the curb weight for a 1989 Cabriolet handy? My owner's manual only shows one curb weight for non-turbo body styles and that is 2756 lbs/1250 kgs. I imagine, however, that true curb weights vary a bit among Coupes, Targas and Cabriolets.

I have not decided where to set the height yet, but will probably go between US and Euro height.

Thanks,
Jonathan

Old 03-02-2013, 04:55 PM
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Old 03-03-2013, 06:38 AM
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Join Date: Jan 2008
Location: Gastonia, NC
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Mine weighed 2956 with 7/8 full gas tank. Also has a roll bar estimated at 40 lbs.

Fyi- mine is pretty low. Very little space between the top of the tire and bottom of the fender. They are around 22 degrees.
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1989 911 Carrera Cab
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Last edited by cashman; 03-03-2013 at 07:14 AM..
Old 03-03-2013, 07:10 AM
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Join Date: Jul 2009
Location: Kennesaw, GA, USA
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I set my mine for 30 degrees trying to achieve the so-called Euro height.
I too just installed the ER rubber bushings.
The car is still on stands wit the engine out for the moment so I can't tell you what it will look like once on the ground though...

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86 Porsche 911 Cabriolet, 2011 BMW 1200RT, 03 Saab 93 Cabriolet, 06 MB E350 Estate
Old 03-03-2013, 07:22 AM
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