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06-04-2018, 06:44 AM | #1 |
Senior Member
Join Date: Oct 2011
Location: Falmouth, Ma.
Posts: 313
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Speedometer calibration
Hi, I had Pasternick rebuild my speedometer. I believe he did a fine job, however there is something wrong. It is about 7 or 8 miles per hour off. Say when I'm going 40 it will read 32 mph. Could the answer be in the transition? I remember something about the gear or wheals we installed. Please advise, thanks Gino
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06-04-2018, 07:39 AM | #2 |
Senior Member
Join Date: Mar 2012
Location: gouverneur n,y,
Posts: 2,753
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Re: Speedometer calibration
EMAIL ME AT [email protected] and I will help you out. papanick
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06-04-2018, 07:49 AM | #3 |
Member
Join Date: Jun 2017
Location: Bismarck, ND
Posts: 84
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Re: Speedometer calibration
Same with mine until I changed the Speedometer gear. Now it's dead on.
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06-04-2018, 08:54 AM | #4 |
Senior Member
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 7,471
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Re: Speedometer calibration
Before you go replacing the speedo drive gear, you should first see whether the odometer is accurate. If it gives a good figure for a trip over a known distance, then your problem is not the gear. If the figure is not accurate, then change gears. Once the odo is right, the speedo is adjusted internally for accuracy.
I know that because the instrument in one of my cars is good for distance but way off on the speedo and there is no adjustment left. That said, if I travel at the same speed for a while, like on a tour, the speedo eventually gets it right. Could that be simply a sign that it needs lubrication?
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I'm part of the only ever generation with an analogue childhood and a digital adulthood. |
06-04-2018, 09:50 AM | #5 |
Senior Member
Join Date: Dec 2014
Location: Shawnee, Ok
Posts: 3,471
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Re: Speedometer calibration
Same here, mine reads slower
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Keith Shawnee OK '31 SW 160-B |
06-04-2018, 10:01 AM | #6 |
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Join Date: Jun 2015
Posts: 1,414
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Re: Speedometer calibration
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