Re: Breaking up over 5500rpm
Posted: Tue Aug 25, 2009 6:18 pm
Dan,
The 23D4 is the stock Dizzy the car came with and has the HT leads going into holes on the side of the cap. As I recall the aftermaket ones have extended collars that the leads enter/exit.
Re; wear.
I was refering to HT breakdown (insulation breakdown). This can not always be seen inside a cap or on an arm. It can show as a thin carbon black track mark. It can be helped form by too much oil put in the dizzy for the counterweights (gets thrown upwards). It manifests itself as a misfire at higher revs and get worse with heat. After cool down it can clear. This gets quite violent in my experinece and the car hunts as the spark goes to ground.
I also had the sh*ts with standard plugs. My Stromberg only ran right with the BP6ES. I know they are hotter and for track use you are meant to use 7's (or even higher) but No 1 plug kept fouling even if I kept reving through. The engine was in good condition!
Mike
The 23D4 is the stock Dizzy the car came with and has the HT leads going into holes on the side of the cap. As I recall the aftermaket ones have extended collars that the leads enter/exit.
Re; wear.
I was refering to HT breakdown (insulation breakdown). This can not always be seen inside a cap or on an arm. It can show as a thin carbon black track mark. It can be helped form by too much oil put in the dizzy for the counterweights (gets thrown upwards). It manifests itself as a misfire at higher revs and get worse with heat. After cool down it can clear. This gets quite violent in my experinece and the car hunts as the spark goes to ground.
I also had the sh*ts with standard plugs. My Stromberg only ran right with the BP6ES. I know they are hotter and for track use you are meant to use 7's (or even higher) but No 1 plug kept fouling even if I kept reving through. The engine was in good condition!
Mike