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Old Jul 25, 2003 | 06:30 PM
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Question Another question.

Where can I go to get my speedometer calibrated? The thing is off by at least 10mph at 45. Any help would be appreciated.
Thanks.

Joe
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Old Jul 25, 2003 | 07:05 PM
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I think one of the restoration companies...year one or the paddock...has a calibration service. I'm going to send the 85mph speedo from the '88 to them to have it calibrated as a 200mph unit... I think it's around $150, but they take it apart and put it back together like new.
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Old Jul 26, 2003 | 11:12 AM
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why is it off? tires? gear? or is it broken?
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Old Jul 26, 2003 | 12:50 PM
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Originally posted by superdave
I think one of the restoration companies...year one or the paddock...has a calibration service. I'm going to send the 85mph speedo from the '88 to them to have it calibrated as a 200mph unit... I think it's around $150, but they take it apart and put it back together like new.

Why not just pick up a 140 mph unit from a 1989 up? Would be WAY cheaper.

Or you could get:
"Police certified calibration 140 and 160 mph speedometers, new and used"
from PPI in Virginia.
http://www.mustangparts.com/int_ext.htm
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Old Jul 26, 2003 | 09:04 PM
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I just got the car from a little dealership that bought it an auction. Nobody knew what was on the car when I bought it. I think it has gears, but how can I find out for sure?

Joe
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Old Jul 26, 2003 | 09:53 PM
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There are some calculators out there but I can't remember where - I thought mustangworks...

Anyways - if you want to find out what gears - the best thing to do is cruise with another car at about 60 or 70mph and post the exact mph and rpm that you run at, tire size, etc. and the gears can be figured out through a caclulator. You need the other car b/c your speedo is off. I remember reading a post about this on the corral somwhere -will see if I can find it.
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Old Jul 27, 2003 | 07:55 PM
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or you can jack up the car and look at how many turns the wheels make in relation to the driveshaft, and that will give you the ratio ..........
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Old Jul 27, 2003 | 08:30 PM
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ya, i think that's the easiest way to do it stangerang. jack the backend of the car up, get a friend to help u with this though, will b way easier. Anyway, once it's in the air make a chalk mark on the driveshaft, spin the wheel one whole rotation and count how many times the driveshaft makes a full rotation. For instance, my driveshaft spins 3 3/4 times with one rotation of the wheel, 3.73. if it turns 4 times, probably a 4.1 gear. Anyway, good luck with it
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