6 clock Dash speedometer

[Vista Estate]

Hi everyone,

I have a 1600GT engine mated to  mk2 escort 1600 sport gearbox. I changed the diff to a 3.54 last November to give me a more relaxed drive. I've just started to get out in it and noticed the speedometer is well off.

Now in theory and according to the Haynes manual all should be OK as can be seen from the extract attached.

I do have 205/60 13's on the back but that shouldn't make a huge difference.

My only thought is that the speedometer is out of a 1300gt and so could be miss calibrated.

Any thoughts? Would a mk2 speedometer fit as a replacement? I know mk1 speedometer to 140mph are not easy to find.

Edited April 8, 2022 by Vista Estate