Does anyone know where I can get an original style XK120 coil (black with mounting flange)? I got one from Bill Tracy a year ago but he doesn’t have any more, and the one I got from him tends to stop working when the car gets hot. When I cool off the coil with water it works again. I need to replace it with something that looks original (and also works)!
they were only intended for carshows and display work!
My original Lucas B12L does the same thing, when hot it makes a dribbly little spark that isn’t enough to start the engine.
Maybe you could find one on ebay, but it might be just as bad.
I got a generic coil from Rock Auto that’s painted black and reliable.
Try Holden Electrical in UK.
They supply some 20 different types of coil, you may have to wait a few days if they are out of stock.
From experience I would guess you need one with a more than 3 / 3.5 ohms primary resistance, otherwise it will get very hot.
Holden has a Q12 coil that looks somewhat similar with 3.6 ohm primary. No flange but I could probably fit one on.