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Hoping the collective wisdom here can help me solve a problem.
My 3000 litre 100/6 developed an annoying misfire. I went through the basics and identified that the rear most set of points in my Mallory twin point dizzy had developed a huge gap and there was lots of evidence of blackening on the base plate presumably from arcing. I had a spare set of points so changed them out and reset gaps at 22 thou where its always been happy. The other original pair of points are not suffering in the least.
Misfire now better but not perfect.
I'd love to know what the underlying problem is. The condenser is a Dennis Welch Supplied apparently unburstable unit that sits remote from the dizzy. Its not electronic ignition. It is still positive earth, the non ballasted coil is wired positive side to the points, there is no other ballast or resistor wire. I noticed the coil does get very hot.
I think I'm on the right rack with this as the car runs like a watch most of the time and is an eager starter I don't perceive any carburation or other issues but have lost confidence in the ignition performance and reliability.
I'm looking for some experienced guidance regarding Correct wiring, Correct Coils, Use of Ballast or not and perhaps a description of how the Mallory twin point system works with the front set of points leading the rear if that makes sense.
Over to you I hope ....
My 3000 litre 100/6 developed an annoying misfire. I went through the basics and identified that the rear most set of points in my Mallory twin point dizzy had developed a huge gap and there was lots of evidence of blackening on the base plate presumably from arcing. I had a spare set of points so changed them out and reset gaps at 22 thou where its always been happy. The other original pair of points are not suffering in the least.
Misfire now better but not perfect.
I'd love to know what the underlying problem is. The condenser is a Dennis Welch Supplied apparently unburstable unit that sits remote from the dizzy. Its not electronic ignition. It is still positive earth, the non ballasted coil is wired positive side to the points, there is no other ballast or resistor wire. I noticed the coil does get very hot.
I think I'm on the right rack with this as the car runs like a watch most of the time and is an eager starter I don't perceive any carburation or other issues but have lost confidence in the ignition performance and reliability.
I'm looking for some experienced guidance regarding Correct wiring, Correct Coils, Use of Ballast or not and perhaps a description of how the Mallory twin point system works with the front set of points leading the rear if that makes sense.
Over to you I hope ....