Speedometer Ratio Box

I changed the differential ratio of my E-Type about two years ago. My car was first delivered in the USA, so it came standard with 3.54 ratio. Most of the 4.2 cars were standard with 3.07. When the car was restored in the 90’s, it was converted to 3.07. However, the previous owner converted it back to 3.54. My conversion put it to 3.07 again. The car still has its original speedometer, which means both the speed and odometer were incorrect. This page lists the different Jaguar E-Type differential ratios.

There are generally two ways of accounting for the differential […]

E-Type speedo bezel refitted

A while ago the E-Type speedo bezel and glass that protects the speedometer had fallen off. I had tried to replace it in-situ, but the bezel fell off the next time I drove the car. I later learned the correct way to do this and it is not very hard.

The panel under the dash that protects all the wires is easily removed providing access to the back of the instruments. The speedometer has two thumb screws that hold it secure against the dash board. They are hard to see, but can be felt. They had slowly worked loose, letting […]

Retrosound Model 1 re-installed

after checking all the connections, the Retrosound Model 1 is now back in the E-Type and I also replaced the cigarette lighter while I was at it. The cigarette lighter had rusted internally and was no longer working – and on longer drives the battery in the GPS was not cutting it. Replacing the cigarette lighter was fairly easy, although the replacement had a shorter collar which I needed to extend with a piece of pipe from the hardware store.

It is good to have a working radio in the car. While on the test drive, the glass cover […]