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Rear torsion bar question
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#1
05-11-2010, 01:22 PM
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Rear torsion bar question
I am about to replace my rear torsion bars going from stock 24.1MM to 28MM. The angle for the torsion plate inclination is 40 degrees. What is recommended for the upgrade? More? say 44 degrees? Less (don't think so) say 36 degrees?
I suspect a lot of trial and error, but a starting place would be helpful. ARF
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OldTee Sold 79 911SC 1/2 87 Carrera (I fix daughter drives) 1991 Corvette Need locks don't use H & H Lock Company Capital One is the pits! 
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#2
05-11-2010, 01:29 PM
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78 SC, the 'Red Car'
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#3
05-11-2010, 01:31 PM
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John,
I installed hollow 28mm t-bars last year. I used 23-24 degrees measured on the top of the unladen spring plate. Slightly lower than euro ride height.
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Tim 05 Cayenne TT 03 M3 (sold) 82 911 SC (sold missed  )90 C2 (sold missed) 87 928 S4 (sold) 85.5 9 fofo (sold  )
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#4
05-11-2010, 01:52 PM
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Tim's right final figure is really based on ride height. If you a real happy with what you gotz, just look at the table. See where you need to go to have same ride height with new bars.
22mm front and 28mm rear is what I had with stock sways. IMO very sweet combo for street and track.
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David I hope to arrive to my death, late, in love, and a little drunk! Just because I don't care doesn't mean I don't understand... Homer Simpson "That's what's keeping me out of F1.... Too much mental maturity...." N0tt0n Some cause happiness wherever they go; others whenever they go. CHAOS, PANIC, AND DISORDER my work here is done... Live without pretending, Love without depending, Listen without defending, Speak without offending
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#5
05-11-2010, 03:01 PM
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http://www.rennlight.com/cgi-bin/spring.cgi
VaSteve gave me this link and Vicegrip used it to help me.
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Bob 04 GT3 86 Carrera 97 318ti "Guys, I'm coming in, I have too much grip."
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#6
05-11-2010, 04:51 PM
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Quote:
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Peter (not "Pete") K. 2026 Lucid Gravity Grand Touring (EV Tow Vehicle) 1997 Spec Boxster #671 2016 Cayman S 2016 Toyota Highlander--wife's DD 2017 VW GTI SE (DD) Gone and missed: 2003 Miata ("SM") race car 1992 Miata ("SSM") race car 2009 911 C2S Coupe 2004 Toyota Prius - sold to son's girlfriend 2006 Dodge Durango 2003 Acura MDX 86 Black 911 Coupe race car 86 Gold 911 Targa 82 WineRedMetallic 911 Targa
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#7
05-11-2010, 04:54 PM
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Quote:
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David I hope to arrive to my death, late, in love, and a little drunk! Just because I don't care doesn't mean I don't understand... Homer Simpson "That's what's keeping me out of F1.... Too much mental maturity...." N0tt0n Some cause happiness wherever they go; others whenever they go. CHAOS, PANIC, AND DISORDER my work here is done... Live without pretending, Love without depending, Listen without defending, Speak without offending
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#8
05-11-2010, 06:22 PM
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There is a link somewhere around that has a great angle calculator. Handy little bit O code and landed Roundel's rear ride hight close to spot on.
__________________
http://vimeo.com/29896988 “Those that can make you believe in absurdities can make you commit atrocities.” Voltaire. "There is grandeur in this view of life...." Darwin. The mountains are calling and I must go. “The earth has music for those who listen” Shakespeare. You Matter. (Until you multiply yourself times the speed of light squared. Then you Energy) “We’ve got lots of theories, we just don’t have the evidence’.
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#9
05-11-2010, 06:22 PM
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__________________
http://vimeo.com/29896988 “Those that can make you believe in absurdities can make you commit atrocities.” Voltaire. "There is grandeur in this view of life...." Darwin. The mountains are calling and I must go. “The earth has music for those who listen” Shakespeare. You Matter. (Until you multiply yourself times the speed of light squared. Then you Energy) “We’ve got lots of theories, we just don’t have the evidence’.
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#10
05-11-2010, 07:39 PM
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Thanks all. Spot on responses.
 PS: to Dr. K It is OK to leave your dirty laundry in my shed. I found two dead mice and the squirrels won't come within 50 feet. A full week and it will probably drive out the termites! ARF
__________________
OldTee Sold 79 911SC 1/2 87 Carrera (I fix daughter drives) 1991 Corvette Need locks don't use H & H Lock Company Capital One is the pits!
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