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Lsd install question
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#1
10-25-2008, 11:43 AM
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Lsd install question
Bought a used factory lsd for my 88 Carrera and there seems to be nowhere to hook up the speedometer ? I believe it came out of a 993 . Did 993's have a different Speedometer hookup ? Is there any workaround for this with my older carrera ? Drilling some holes ? thanks for any input.
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Scott Bresnahan Purcellville Va. 2014 GTB1 World Champion 8 Time National DE champion 88 911 Cup 2021 GT4 13 Boxster S 1969 Saab Sonett 2013 Cayenne 2014 F150 Hurricane race trailer with A/C  05 Cup car 02 Koni 996 
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#2
10-25-2008, 05:16 PM
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Attach one of these to the fender, and learn to estimate speed by how fast its spinning....
  ....more seriously... I had a similar problem with our Burg 944. It initially had an LSD tranny from an earlier car, whose speedo was mechanical off the front wheel. The later trannys have an electronic pickup. I eventually bought a later non-LSD tranny with the proper pickup that the car could plug into. The earlier LSD tranny went into the race car, which is using a GPS based speedo. Not sure how the 911's compare speedo-wise. But an option for you might be a GPS based speedo. Is your car using a mechanical or electronic speedo? If electronic, there are some adaptors I've seen online, that can use a bolt or some other spinning reference object, but getting the electronic signal to match the speedo is not necessarily easy.
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- Tony P. Currently - 1984 944 SP2 racer - 1977 911 KM Special vintage racer - 2000 Boxster S (now mine) - 1995 993 (garage queen) - 2007 Cayman S (wife's track beast) - 2017 F350 (tow monster) - 2018 Jeep Wrangler - 1982 911 Targa (resurrection in process) Gone but not forgotten - 1989 944S2 - 1979 RX7 - 1986 944 - 1991 944S2 (in car heaven...) - 2001 Chevy Suburban 2500 (FIL's beast now) - 2012 Cayman R
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#3
10-25-2008, 05:46 PM
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This would be a more appropriate measurement device:
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Hunt 611racing.com OG Racing Team Vimeo https://www.youtube.com/user/Streak986 1999 SPB #611 2004 Wrangler “That’s how people like you work. Your ego is so out of whack that it will do what ever it can to protect itself. And people with a messed up ego can do these mental gymnastics to convince themselves they’re awesome when really they are just douche bags” - Kyle, South Park "If you need to focus maybe you should buy the book and take it home" - MLIN
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#4
10-25-2008, 08:05 PM
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Scott, the 993 speedo ran off an output from the ABS control unit who's input was the R/F speed sensor.
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Chris Prack 89 944S2 89 951 84 944
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#5
10-25-2008, 09:52 PM
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Stick a TomTom on the dash.
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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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#7
10-28-2008, 12:48 AM
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I don't know. Just hanging out and enjoying the show. Pass me a beer when you get a chance.
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Chris Prack 89 944S2 89 951 84 944
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#8
10-28-2008, 07:23 AM
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My mechanic machined the holes for the speedo. says it is working fine. great improvising...
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Scott Bresnahan Purcellville Va. 2014 GTB1 World Champion 8 Time National DE champion 88 911 Cup 2021 GT4 13 Boxster S 1969 Saab Sonett 2013 Cayenne 2014 F150 Hurricane race trailer with A/C 05 Cup car 02 Koni 996
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#9
10-28-2008, 08:32 PM
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I had to do the same thing with a Quaife diff once. Three holes for the aluminum ring.
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Chris Prack 89 944S2 89 951 84 944
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