All car injectors operates at 12V, David…?
The difference between our ‘main’ injectors and the CSI is that the former is powered through the injector resistor pack - which reduce injector voltage and current. The injectors coil’s resistance is nominally 2,4 ohms and added some 6(?) ohms - reducing current to around 1,5A - or some 18W load…
The resistor’s purpose is described as ‘protecting the ECU in case of a injector short’. However, it may also ensure that the injector is not overheated by the high current due to the low injector coil resistance? About 5A - or a load of some 60W…
The CSI has no external resistor, so only the resistance in the coil restricts current. Bearing in mind that the CSI is meant to operate continuously for up to 8 seconds - while the other injectors are intermittent…
I quite agree with Dough; the difference between injectors is unlikely to be a hill of beans. Theoretically; the same injector may work well on different setups - an ‘ECU’ may control the amount of fuel delivered from a variety of other parameters…
In the case of ‘our’ CSI; one would need and injector;
- that physically fits - including hose connection and electric connector.
- has an internal resistance that matches the original (which is?)
- works with around the nominal 36 psi
If the replacement resistance is very different - it may be ‘adjusted’ by adding an in-line resistor to prevent burn-out. Which may allow for using an standard xk - and indeed; a V12 CSI may be used if available…?
xj6 85 Sov Europe (UK/NZ)