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Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,122
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spedo error
my speedo reads about 10 mph faster then real world time. Is this normal Porsche ticket limiter?
Would like some clues here as to what might cause this. maybe someone put in a diff ring and pinion ?
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D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
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10-12-2005, 01:20 PM
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Registered
Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
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Conventional wisdom is that Porsche speedos will usually read about 5 mph fast. This is affected by your wheel and tire choice of course. The speedo is internally adjustable if you care to take it apart.
ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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10-12-2005, 01:27 PM
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Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,122
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hmmm take it apart???????/will it be sort of obvious??
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D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
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10-12-2005, 03:22 PM
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Registered
Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
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You need to (carefully) pry the back side of the black bezel off the lip of the gauge itself to let you get at the guts of the gauge. once the circuit board inside is exposed, there's an adjustable pot you can tweak to change the speedo reading for a given input from the speedo sensor. If you search here you'll find some more info about it,
ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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10-12-2005, 03:33 PM
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Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,122
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Thankyou
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D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
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10-12-2005, 03:55 PM
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Registered
Join Date: Sep 2002
Location: Central Virginia
Posts: 414
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I compared mine to my GPS while on the interstate (82SC) and above 45mph the error was about 5 mph OVERstated.
Paul
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Paul '87 Carrera cab; '19 Ford Flex for the Dane and Lab; '17 Tacoma for truck stuff. '96 993 cab (gone, oops); '82 SC (gone) |
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10-12-2005, 04:36 PM
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Retired Member
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My 82 SC speedo reads about 10% fast. Trip meter quit this summer. Plan to have the speedo send to
http://www.nhspeedometer.com/index.htm or http://www.paspeedo.com/about.htm during the winter sleep.
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1982 911 SC Targa - Rosie....my Mistress. Rosewood Metallic on Dark Brown and Black. Long distance road warrior and canyon carver. A few mods - a little interior, some brakes, most suspension and all of the engine. |
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10-12-2005, 06:30 PM
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Rosie
