Injection distributor.

[jdw66]

I've read several times on this forum that switching a distributor from a fuel injected car to a non fuel injected car gives a slight increase in performance. So could someone explain in simple terms why this is the case.

[james butler]

Injection timing is different to carbed so all the internals will be slightly different in terms of timing advance curves,
The improved performance by putting injection dizzy in a carbed engine is a side effect.
I have a injection dizzy in my carbed rocko. My performance was increased dramatically but I think that was down to the fact my old dizzy didn't work and the injection dizzy was the only one I had to hand. Lol

[jdw66]

Thanks for info. Finally i think i understand. As for the swap over is it straightforward. Am i right in assuming as both distributors use the same block the distributor can only go in one position due the dog, therefore you don't have to adjust anything.

[Chris6969]

Thats interesting....Anyone know where to get one?

[james butler]

Yeah fitting the dizzy is straight forward enough. Everything is the same. Make sure before you take the old one off that you align the timing belt marks up first and take note which way the rotor is pointing, then when you put the new one in make the rotor point the same way, then twist the dizzy until the little notch in the dizzy housing lines up with the rotor tip.
You will the. Need someone with a timing gun to set it up perfect.
Or you can set it up by ear, this method takes time as every time you set it up you will need to drive it to see if it works.
I bought a timing gun to time it up properly but did have to tweak it after driving it.
My old dizzy died because the hall sensor inside the distributor was rubbing on the trigger wheel making it malfunction so I replaced the whole thing.
Word of warning though if your distributor is the origenal it may be seized in the block so soak the mounting with wd40 before you try and pull it out.