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Speedometers were either in kilometers (JDM) or miles (USA). Australia started with mph and then switched to kph. Some speedometers had a trip meter.
Comparo 
1972 USA Owners manual (see page 8,9 for Speedometer):
Instrument and Controls
Contents |
Part Numbers
- ?? 100MPH w/o tripmeter (US standard equipment)
-
- ?? 100MPH with tripmeter
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- 24850-H3400 1200 120MPH SPEEDOMETER Includes tripmeter
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Metric-Imperial Conversion
Sometimes on eBay Australia you can get the vintage conversion stickers.
OR
Take the face plate and scan it on the flatbad scanner, then modify it. Finally, print a new one out with the photo printer. You can modify the font, colors, etc. Bolt it to the speedo using the standard screws.
Speedometer Calibration
There are two basic reasons for speedos reading fast or slow:
- Factory speedometer tolerance is usually 5% fast to 10% slow (this is in general, I don't know what Nissan's specs are)
- 1200 Top Speed discusses this. One magazine test noted the 1200 speedometer in the test car was 7% slow. My 1200s have been between 7.5% - 10% slow (with stock running gear include tire size). Also see speedo off
- Different size tires than original, changed diff ratio or transmission
For the latter, there is a mechanical solution of changing to the appropriate speedo-drive gear at the back of the transmission:
For the former, where you have the "right" size tires, final gear ratio and stock transmission -- the speedometer itself may be calibrated.
Where can you go to get a speedo calibrated? Can it be done at home?
- Scale Adjusted for low gearing, looks good printed on photo paper and bolted to speedometer.
- I modified mine to change the scale since I didn't want to get under the car and change the plastic speedo gears.
Amplifier Speed Switch
USA model from 0772 use an amplifier speed switch.
- 25035-H7000 ASSY-AMPLIFIER SPEED SWITCH
Custom Faces
Photo Index
