So, I decided to take the dash out to change to LED bulbs for the instruments (thanks Dave and JD btw).
While I had the dash out I figured I would get the speedo calibrated as it has read too high ever since i have had the car.
Yesterday I went to Otto Instruments here is Brisbane and they put it on the calibration machine and told me it is reading perfect.
The thing is when sitting on 100 kph the speedo reads 70 mph, which is 7.5 mph too high. On every speedo calculator
I use, I have the correct gears on the speedo cable and drive gear in the box.
205/60/13 tyres
3:36 diff
aussie 4 speed
white gearbox drive gear
yellow 24 teeth speedo gear
Don`t know what is going on, any thoughts?
Brian
http://www.centauria...speedocalc.html
Calculator I am using
Edited by dublinxu1, 25 July 2020 - 02:26 PM.