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Registered
Join Date: Mar 2002
Location: New Hartford, NY
Posts: 740
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Lowering, cornerbalancing procedures
Hi, I am planning to rebuild my rear suspension in my 77 911 targa w/ 3 L engine. the front already has been done. The front has stock torsion bars(18.8mm), new stock front a-arms, turbo tie rods. bilstein shocks. The rear will have new stock spring plates, new sway bar bushings, bilstein shocks and I am installing 25 mm torsion bars from an 86 911. The sway bars stock also 20/18. I plan to lower my car to the euro spec as defined by my tech spec book, 108mm difference in front and 12 mm difference in rear from centerline of wheel to centerline of torsion bar cover. I would like to attempt to cornerbalance at home after lowering it and before bringing it to the shop for alignment. I would like to get some imput, ideas on procedures, methods for lowering and cornerbalancing. The car is street driven only. Thanks jerry
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03-25-2009, 06:17 PM
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Registered
Join Date: May 2002
Location: Portland, Oregon
Posts: 12,668
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You lower the rear by reindexing the torsion bars. Simply put, you will remove them and turn them to the new position and reassemble. The devil is inhte details.
There is a calculator on this Web site that some have used with sucess to determine the angle to reassemble. Do a search. For at home corner balancing, there is a method known as the TRIPOD METHOD. Folks here have used it with sucess and described how it is done. A search should turn that up as well. For the basic procedure to lower your car, get Wayne's 101 project book. It is one of the projects listed.
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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03-25-2009, 06:32 PM
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Registered
Join Date: Oct 2006
Location: Colorado, USA
Posts: 8,279
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do a search on this site for corner balancing, also using the word "tripod" corner balance.
It's do-able, but a very tough process, IMO. At least it was for me. There is a lot going on with 4 wheels, height, balance, etc. The rears can also be very tough and unpredictable as far as getting the spring plates on and off. Jacking up and balancing the car, making adjustments, front, rear, etc. etc. It's also tough if you are a perfectionist. I suppose you could get lucky and get it close to right straight out of the box. I probably spent around 10 hours on it, much of it frustrating! |
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03-25-2009, 06:43 PM
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