My Volvo B20 Electronic Ignition conversion.

Well, after about a week converting my teacher’s Pajero from a point dizzy to an electronic one, I decided to do one too on my Volvo.

I used the electronics from a Toyota 5K engine. (Found on older corollas… this dizzy is the same as the 4K except the 4K has a big external Igniter. While the 5K has a smaller one fitted inside its dizzy, but we can’t fit it into the Bosch anyways.)

I doubt this is very useful for some people, since after-market kits are available. As for me living in Thailand, I can order a kit over-seas, but what if something goes wrong… I won’t be able to find replacement parts; so I decided to use parts from a 5K Toyota since these engines are very common here, and spare parts can be obtained in any parts store.

Well… first you take both distributors apart. (Humm… the Bosch cam was pretty hard to take apart. There is a locking ring inside the hole where the rotor sits.)

Then you press the square piece off the Toyota distributor… fairly easy to press out.

Then you take the Bosch cam and turn it round on a latch to about 14.30 mm …( Not the whole cam… leave about 1.5mm of the cam on the bottom side. I used a piece of metal and turned it to 7.6mm and then tapered it to 8.5mm… you want this taper to press into the hole at the bottom of the cam…sorry, no pics- forgot to take the camera with me.) It will look something like the pic below…

(Sorry… the numbers are wrong… it’s supposed to be 14.xx mm, not 13.xx. Sorry…)

A pic of the dizzy before going into the latch…

A pic of the plate with the pick-up on it…

A pic of the Toyota Electronics… Nippon Denso stuff…

(I had to cut the red and white wires since I can’t fit both of ‘em into the dizzy.)

This is where I mounted the Igniter…it may need a heat-sink. Dunno…

(Won’t fit into the Bosch dizzy… the Toyota dizzy is way bigger.)

You connect the black/red wire to the positive terminal on the coil.

And the black on the negative terminal. And you also have to ground the unit…

Top View of the finished product…

Now you won’t have to open the dizzy cap in a long while… (It may miss you not opening it…hehe.)