Strangely, my dual point mallory dizzy caused me problems. (or did it?)
When I first bought Sparky, he ran very lumpy, and it seemed that to get any sort of power, I had to floor it. So I had a good tickover and a good WOT but not too much in the middle. I took it down to RPI and he told me that the mallory was not the right dizzy to have with the spec of my engine and I would be better off with the contactless SD1 dizzy. Funnily enough he just happened to have a new batch of the SD1 dizzy in stock :roll:
Not bein an idiot, I was resistant to this but he said he would change it and if i didn't make a big difference, he would change it back, no charge. I drove it up the road and it did make a huge difference, not perfect but a whole lot better. Replacing the feed wire to the coil sorted the problem completely. I do still wonder if I had changed the wire first, whether the mallory would have performed better.
So, if I was looking to upgrade my igniton system I would fit the SD1 contactless dizzy and magnecor leads.
If I was looking for a misfire, I would check all of the existing connections for tightness and cleanliness (including wire from fuse box or tacho to coil), voltage at the coil, rotor arm and inside of dizzzy for any sign of tracking, timing, action of vacuum advance unit, vacuum pipe, point gap and condition, plug gap, tightness of condenser, etc. Then run her up in the dark with the bonnet open, and see if you can see any tracking under there.
Richard
