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Distributorless ignition for V12 5.3, does it exist?
No kit, google dual EDIS 6 and Megasquirt this has been done a few times and is what I will do with mine. The Ford coil packs look the same a s the later Jag V12 coil packs. Jag went to distributorless in the last few years of production after the XJS ceased.
I have also seen these run with dual GM Delco 888's
This guy talks funny, like a Scotsman
Brilliant solution, but a bit too much too bite for me. I'd prefer a pre-made kit, with instruction manual.
Thanks for the link, this was fun to watch.
The only thing I know of that is plug and play is AJ6 super enhanced ECU but I have heard it is very pricy - you would have to contact AJ6 for pricing and is only fuel I don't know of any kit for distributorless ignition.
VR sensor is a hall effect device that senses teeth on a wheel - very simply it is a magnetic device for counting pulses. My XJS has a 3 tooth reluctor wheel with a VR sensor so the ignition ECU knows when 1A is TDC.
Your Pontiac will most likely have a 36 tooth (actually 35 teeth 1 is missing for timing) reluctor wheel on the crank pulley. The Ford EDIS uses the 36 tooth as each tooth represents 10° of crank rotation.
how would you adjust timing on a VR equiped vehicle? would it be a simple matter of adjusting your trigger wheel in respect to the crank. also, how many teeth would a V12 wheel require?
or vr sensor relative to trigger wheel, that is for the base timing. You need a ECU for the timing curve.
Same tooth count as 4, 6, or 8... 36-1. Megasquirt has guys running V12s and EDIS. Read some of their site.
Marelli equipped V12s have a 3 tooth wheel with tooth 1 being TDC for cylinder 1A then the ignition ECU calculates TDC for the other 11 cylinders - typical Jaguar complexity.
A 36 tooth wheel will run any number of cylinders and has 1 tooth for every 10° of crank rotation (minus 1 tooth for the index pulse) so a firing pulse for a V12 would be every 6 teeth or 60°. Timing has to be adjusted via software in the ECU. Static timing is set via the relationship of the sensor, reluctor wheel and TDC of 1A.