The last Jaguar V12's didn't have a distributor. They ECM basically triggered 6 coils with 2 leads on each coil. When one cylinder fires the other cylinder dry fires on the exhaust stroke.
Mine is a basic Megasquirt 2357-C
if all I want to do is control the spark can I use this? It's a major pain to adjust timing on a V12. The distributor only allows 3 degrees of timing change. Even that requires taking it 1/2 way apart then adjusting it blind and reassembling then crawling underneath to see the timing marks on the bottom of the engine.
I thought one of the virtues of the V12 that you've extolled is that the distributor was right on top and easy to get at lol
What can't you do with a Megasquirt? 
You can definitely run the V12's ignition in wasted spark mode similar to the factory system. You'll have to set up multiple injectors to be fired by a single injector driver, discussed here:
https://forum.etypeuk.com/viewtopic.php?f=6&t=15380&sid=f0367f3ff9df047a6fb9ec7ca876555d&start=20
GameboyRMH said:
What can't you do with a Megasquirt?
You can definitely run the V12's ignition in wasted spark mode similar to the factory system. You'll have to set up multiple injectors to be fired by a single injector driver, discussed here:
https://forum.etypeuk.com/viewtopic.php?f=6&t=15380&sid=f0367f3ff9df047a6fb9ec7ca876555d&start=20
I won't be using the fuel injection. To run in group 6 I have to use carbs. So all I need to do is control the ignition.
Racingsnake said:
I thought one of the virtues of the V12 that you've extolled is that the distributor was right on top and easy to get at lol
Oh it is easy to get at. Plus I do have my own distributor machine so it's straight forward for me to get it to do what I need it to do.
It's just so much more work over a few key strokes.
I admit I've learned a lot watching video's and attending a few dyno sessions.
You can set up that Megasquit for six spark outputs, but it's either a very involved solder job or swapping to an MS3 processor and MS3X card.
MadScientistMatt said:
You can set up that Megasquit for six spark outputs, but it's either a very involved solder job or swapping to an MS3 processor and MS3X card.
I have definitely done a 6 coil version for a BMW and it wasn't fun. I can be persuaded with money to do another.
MadScientistMatt said:
You can set up that Megasquit for six spark outputs, but it's either a very involved solder job or swapping to an MS3 processor and MS3X card.
That's kinda what I thought. What do you think it would cost me to swap my current new, unused MS2 for the MS3X card and MS3 processor?
I give a $100 credit for MS2 to MS3 upgrade (I keep MS2 processor). $150 for labor and the parts are around $500 for the MS3, 3x and 8' harness.
frenchyd said:
That sounds very fair.
It definitely could be worse, I'd charge 500 just to put 6 BIP coil drivers on a MS2/3.57 it sucks a bit. The only caveat is you need to use coils with amps with the 3x drivers.
Would I be ahead if I bought an upscale MS? Something like a pro?
