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XJS 1975 - 1996 3.6 4.0 5.3 6.0

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  #1  
Old 12-23-2011, 09:39 AM
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Default Distributorless ignition for V12 5.3, does it exist?

Can someone suggest is there are distributor less ignition kit for v12?

Thanks
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Old 12-23-2011, 01:30 PM
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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
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XJS 1989 V12 Marelli & ABS
Calais V6 3800 supercharged
too many to list - now gone
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  #3  
Old 12-23-2011, 02:20 PM
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Ignition on these is weak as hell, can someone suggest good solution for powerful spark?
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Old 12-23-2011, 03:56 PM
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Have a look at this Fords EDIS 6 spark is very good

Dual EDIS-6 distributorless ignition system at work - YouTube
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XJS 1989 V12 Marelli & ABS
Calais V6 3800 supercharged
too many to list - now gone
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Old 12-23-2011, 05:42 PM
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very good warrjon, that ignition along with a fuel managment ECU, should take care of any problems with engine control.

especially with future forced induction cylinder pressures! YUP sounds like a plan.
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Old 12-23-2011, 05:45 PM
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Quote:
Originally Posted by warrjon View Post
Have a look at this Fords EDIS 6 spark is very good

Dual EDIS-6 distributorless ignition system at work - YouTube
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.
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Old 12-23-2011, 09:52 PM
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Quote:
Originally Posted by Mish_Mish View Post
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.

South African
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Warren

My restoration blog
http://warrjon.blogspot.com.au/

XJS 1989 V12 Marelli & ABS
Calais V6 3800 supercharged
too many to list - now gone

Last edited by warrjon; 12-23-2011 at 10:23 PM.
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Old 12-25-2011, 12:26 PM
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I believe EDIS is my plan if/when I find ignition issues.
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Old 12-25-2011, 01:09 PM
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what do the VR sensors actually sense? the cam gear?
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Old 12-25-2011, 03:01 PM
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Steel gear on the crank pulley. 36 teeth, -1 for an indexing mark. Look at about half of the fords from the 90's.
Click the image to open in full size.
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Old 12-25-2011, 03:01 PM
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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.
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XJS 1989 V12 Marelli & ABS
Calais V6 3800 supercharged
too many to list - now gone
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Old 12-25-2011, 03:35 PM
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my pontiac has a CPS. not sure what its reading exactly
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Old 12-25-2011, 03:57 PM
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CPS not sure what you mean? My L67 has VR sensor.
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XJS 1989 V12 Marelli & ABS
Calais V6 3800 supercharged
too many to list - now gone
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Old 12-25-2011, 03:59 PM
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Der Cam position sensor.........

Ok my L67 does not have CPS - the VR sensor will be near the harmonic balancer and the reluctor wheel will be attached to the front of the crank
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XJS 1989 V12 Marelli & ABS
Calais V6 3800 supercharged
too many to list - now gone
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  #15  
Old 12-25-2011, 04:02 PM
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what year is your L67?
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Old 12-25-2011, 04:15 PM
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2002 one of these but in silver I haven't got any pics of it

They came with L36 L67 or LS1 and rear wheel drive
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Distributorless ignition for V12 5.3, does it exist?-cal1gp7.jpg  
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My restoration blog
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XJS 1989 V12 Marelli & ABS
Calais V6 3800 supercharged
too many to list - now gone
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  #17  
Old 12-25-2011, 04:18 PM
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thats weird that yours isnt CPS equiped.
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Old 12-25-2011, 04:21 PM
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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?
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  #19  
Old 12-25-2011, 04:46 PM
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Quote:
Originally Posted by M90power View Post
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.

A few build links here: http://derherr65mustang65.blogspot.c.../12/spark.html
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Last edited by derherr65; 12-25-2011 at 04:50 PM.
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Old 12-25-2011, 04:49 PM
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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.
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Warren

My restoration blog
http://warrjon.blogspot.com.au/

XJS 1989 V12 Marelli & ABS
Calais V6 3800 supercharged
too many to list - now gone

Last edited by warrjon; 12-25-2011 at 04:51 PM.
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Old 12-25-2011, 04:49 PM
 
 
 
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Tags
36, 361, 40, 53, cei, distributorless, edis, ignition, jaguar, kit, megasquirt, relutor, tooth, v12, wheel, xj6



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