Hi Acetronics,and thanks for the input.
I hear what your saying on the machining tolerences but the system dosent relly on it.
Fortunatly for me this Boch distributor comes with a reluctor inside of it which sends an AC pulse to the ignition amplifier which in turn switches the coil.So its actualy still runing the factory triggering system.
I am going to conect the wire from the reluctor to four ignition amps and coils instead of just the one.
The system that I have constructed on top with the RC cylinder head is used to decide which ignition amp and coil should recive power.They are all actualy being pulsed by the reluctor at once.Ive posititioned the blades on the head to overlap the reluctor by a healthy margin on both sides also.
I have spun the distributor and tried the program and it does work,should I say it flashes LEDs anyway and all in the right places.
I have to now try applying 12v to the collectors on my transistors and conecting the emitters up to ignition amps and coils and see what a real world bench test goes like.
First before I do that (probably tomorow now) I want to conect the scope up to the factory reluctor output from the distributor and the output from my optical sensor with the four blades and see how central I was in my positioning of the head over the reluctor.

This is my first day at this stuff and Im very aware that my programing skills and understanding are seriously lacking but I thought the only way to learn about somthing is to try.Im an engine guy really and the ability to use this type of thing in that field is fascinating to me,when I think about the applications and possibilities for an engine I can get quite carried away with it.But at the moment my ideas for engine applications with this far outstrip my abbilities with programing.Still,Im having fun learning.

All the very best wishes and many many thanks for your thoughts Acetronics and please let me have any thoughts you have on it.
O.T.