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Registered
Join Date: Jun 2002
Location: Netherlands
Posts: 61
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Spring plate angle
Hi,
I am replacing the rubber bushes of the rear springplates of my car. Before I removed the springplates I measured the angle the springplates are mounted. Left I measured 36.5 degrees and right only 34.5 degrees. Is this normal? Both torsion bars are 24 mm so I expected that the angle would be more or less the same. Any ideas? Peter 1972 911 2.4S |
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11-18-2002, 10:57 PM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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There are three factors that could make the spring plate angles uneven. 1) The rear end is not lifted at exactly the same height, side-to-side. 2) The wear on the torsion bars is not exactly the same. 3) The L/R vehicle ride height was set differently.
I would not worry about this. Use those angles as a reference point to reinstall the bars after you replace the bushings. If the heights are different, you may wish to readjust one corner. Sherwood Lee http://members.rennlist.org/911pcars Early 911s Registry |
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11-18-2002, 11:23 PM
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Irrationally exuberant
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I suppose it is too late now, but prefer marking the position of the spring plate on the inner fender well. I clean the area behind the spring plate and put some wide (2"/50mm) masking tape on the body and scribe a line on that. You must clean the area for the tape to stick. Setting the torsion bars on an early car makes you really appreciate adjustable spring plates.
 -Chris |
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11-19-2002, 04:38 AM
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Registered
Join Date: Nov 2002
Location: gatlinburg tn
Posts: 752
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taking those old bushings off is boatloads of fun. i reinstalled to stock t bars on their stops and came out on the money.
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72 911t grey/black mine 74 914 2.0 black/ tan hers 02 g500 black/black womanproof 01 f250 psd dirty the mule 60 correct craft starflite cool 69 correct craft torino hauls butt 72 correct craft ski nautique fun 66 vw 1500s will finish someday |
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11-19-2002, 07:23 AM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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Peter,
The angles ARE supposed to be the same on each side, with a small tolerance allowance. Your car was probably lowered or adjusted by someone who was a bit careless! The factory spec was 36.5° to 37° for your car. The final check is for side-to-side ride height difference no greater than 5 mm between left and right sides!
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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11-19-2002, 08:54 AM
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Too big to fail
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Go to this page: http://www.vintagebus.com/cgi-bin/spring.cgi If your t-bars are stock, use the default t-bar size. Plug in the car's weight, and there's your angle.
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"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
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11-19-2002, 10:22 AM
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Registered
Join Date: Jun 2002
Location: Netherlands
Posts: 61
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Thanks. I will make the angels the same on both sides and see what happens.
Peter |
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11-19-2002, 11:09 AM
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The Blue Pheonix
