Gents Forgive my ignorance but what is the difference between jolt and squirt? Im building a mk1 abf on carbs and just seem to be st a loss for what I need for the best...... Jolt or squirt......individual coil packs or wasted spark (what ever that is)
Megajolt just does the ignition side of things. Megasquirt does both fuelling and ignition. So with your carb setup the Megajolt system will be all you need.
Ford edis? Thats what started my confusion. Searched internet etc, and saw loads of ford stuff......! Although the explanation of wasted spark makes total sense..... The comment above about running wasted spark with individual coil packs makes me ask, are there any benefits to running a wasted spark config?
The Ford EDIS system is really well thought out! The EDIS wasted spark module arranges the ignition timing on is own, with a default of 10 degrees of advance. So if megajolt, or other system, fails, that's your "limp home mode". All the megajolt, etc does is send the SAW (Spark Advance Word ...or something like that...) to the EDIS to arrange more advance, depending on engine LOAD, normally measured with a MAP sensor.
Not sure that is entirely true. The Megajolt system uses the Ford EDIS ignition module, which defaults to the 10deg limp home mode. I understand any coil pack with compatible ratings can be used. http://www.autosportlabs.net/MegaJolt_Lite_Jr.
You may be right, from that diagram. But i seem to remember the one i had had the EDIS module integrated into the coil pack, although it's a while back....
It is just a heads up for folk thinking of getting Megajolt. As they still need to source the EDIS module from an early EDIS equipped vehicle. Later Fords just had the coil pack, and the work the EDIS module did was integrated into the Ford ECU. Just grabbing the coil pack from a later vehicle will leave them short of the module. TBH I am not 100% up to speed on current Megajolt specs, it could be the Megajolt masif have been working on an integrated system. A bit like the development of installing the coil drivers into the Megasquirt ECU.
Escort or Orions mk5s from the 90s are candidates. I think it was mk6 versions that dropped the module and had the workings in the ECU. I am sure mk4s still used dizzys. A bit hazy on that. If you checkout the link I posted above you can see the components you are looking to source. Basically the coil pack and module, but get the plugs and connectors to these components as you need these to make the loom. This is the main site. http://www.autosportlabs.org/ If you have a good read the info is all in there.
If your only running carbs why not use h n h ignition solutions you get rid of all the ecu tci and most if not all of the wiring needed for them then and all you need is ignition live to there coil and 2 wires from there dizzy to the coil. Think it's 4 wires in all I was well happy with mine and for the price you can't go wrong (205) posted everyone is custom to your engine you just tell them what your running and it comes within a week I bolted it on connected the wires and set dizzy at TDC and the car fired first time Hope this helps I plan on doing a write up for it after new year once I've had it running for 20 mins
From what I have read on H&H ignition solutions, the dizzys are supplied with an altered advance curve. Even with they full conversion kit. So you do you verify that this curve matches all engines including the one in this thread by bigbenbird? Unfortunately you cannot. With Megajolt - you map the ignition curve for your specific engine. This would be the main benefit towards best performance if the OP is running carbs.
Read what I wrote everyone is custom made u tell them the mods they do the dizzy to suit don't appreciate having a go I was offering what I'm using on my kr running r1 carbs why are people so abrupt on this forum
As far as I'm aware if you tell them what stage port and polish what manifold set up your using and things like that they tailor it to suit. I'm not saying it's as good or as technical for fine tuning but if you haven't got a good understanding or the cash or experience of doing stuff it's a straight forward set up for people wanting to run twin carbs and get running that's why I picked it I would love a mj and itbs or ms but it's just a little easier to understand than mj and it got mine up and running and will have to see how it runs once I've got it running to a rolling road end of jan but at the min it's got no brakes and will be out of mot at the end of feb
