Distributerless ignition conversion? - Defender Source
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  #1  
Old December 11th, 2006, 11:31 PM
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Distributerless ignition conversion?

Is it possible to convert a 94 to Distributerless ignition like a 97? If so has anyone done one?

What parts?
I am assuming an ECU, engine wire harness, coil packs, speed senser, harmonic balancer and pickup. Anything else?

I think I have a bad ECU now and the distributer is questionable so it got me thinking.

Thanks in advance.
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  #2  
Old December 11th, 2006, 11:48 PM
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Robert Dassler
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No, it is not practical. You would need a 4.0 engine block to get the crank, cam, & knock sensors, all of the wiring, intake plenum, and sensors. You would also have to swap out both axles and install all the wiring & sensors for the rough road detection ECU as well as change the exhaust to accomodate the post cat O2 sensors. Fix your 14CUX and be happy with it. It is a much more trail friendly EFI system than the GEMS as it can be field diagnosed with a DVOM and a book and does not require any scan tools or exotic equipment.
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  #3  
Old December 12th, 2006, 01:01 AM
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Hey, whats a DVOM? The book is where you look for codes right?


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  #4  
Old December 12th, 2006, 02:32 AM
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Thanks for the info Rob. I guess I'll be hunting up a ECU. The funny thing is this will be the second ECU for this D (only 45k miles on it total).
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  #5  
Old December 12th, 2006, 09:01 AM
artm
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Arthur Maravelis
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There are several people who have installed Megasquirt on this motor. Not a big deal really and good support from that community.

Start searching on Google and be prepared for quite a bit of information. Below are some links I've dug up in the past few months:

http://www.sdsefi.com/
http://www.megasquirt.info/
http://www.glensgarage.com/catalog/index.php
http://www.juracid.co.uk/lr/index.php?do=ms
http://www.yorkshireoffroadclub.net/.../bgs/index.php
http://www.ep90.com/index.php?id=13
http://megasquirt.sourceforge.net/extra/index.html
http://www.bgsoflex.com/mjl/mjl_edis.html
http://www.dainst.com/info/edis/edis.html
http://www.wrenchead.ca/HTML%20Prese...der/sld069.htm
http://picasso.org/mjlj/
http://www.getmuddy.co.uk/bertha/megasquirt.html
http://mjlj.mysite.wanadoo-members.co.uk/index.html
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  #6  
Old December 12th, 2006, 09:09 AM
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Just curious, why do you think you have a bad ECU?
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  #7  
Old December 12th, 2006, 09:33 AM
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http://www.defendersource.com/faq/En...gn.html#Module maybe thats your issue. I dont know mch about electronics and things but I know I wouldnt want an ignition without a distributor. What are your symptoms?
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  #8  
Old December 12th, 2006, 09:48 AM
artm
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Quote:
Originally Posted by rover4x4
... I know I wouldnt want an ignition without a distributor.

Why not??? I will say that I have NEVER had an ignition related problem with my 97. Plenty of you 94-95 folks have. I don't know if that is pure luck on my part or not but I have found the coil packs to be nothing but troublefree.

So, you prefer an all mechanical distributor even over an electronic one? No thanks, too may headaches.

The Ford FDIS system, often used in Megasquirt systems, is rock solid and DIRT CHEAP. The only mechanical connection is the crank sensor. Compare that to a distributor with all its mechanical gremlins.

Do a little reading and you'll be wondering why you're not on Megasquirt. Of course, the answer is the time involved in setting it up correctly. The answer to that is to find someone who has done all the fuel/spark mapping and is satisfied. That is where you start on yours.
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  #9  
Old December 12th, 2006, 09:53 AM
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Mark M
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Two of the reasons I went with the 97 was the auto-box and electronic ignition. No issues in regards to reliability thus far. My only issue was the inability to chip the GEMS for my engine mods and altitude. Then Mike Smith mentioned Mark Adams - no issues across the board now. HTH. Mark
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  #10  
Old December 12th, 2006, 09:55 AM
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I just dont understand how it works so maybe i am being ignorant. Computers and electrical things scare me.
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  #11  
Old December 12th, 2006, 10:20 AM
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DVOM=Digital Volt Ohm Meter
The Mega Squirt intrigues me but I've got too many current projects as it is. I know a bunch of people are running it successfully. My concern would be emissions legality & check engine light functionality when it came time to emission test the vehicle and if you wanted to sell the truck in the future.
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  #12  
Old December 12th, 2006, 12:58 PM
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Arthur Maravelis
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A 94 is not OBD2 so no problem with Megasquirt. Get your mapping right and emissions will be right.

MS has no plans to support OBD2.
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  #13  
Old December 12th, 2006, 08:36 PM
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btate,

My smyptoms are exactly the as:

Quote:
Originally Posted by Doug
There is a Part Deux - an important discovery! I drove the truck with the original '93 ecu today, first time. ALL THE SYMPTOMS that I thought were caused by a bad valve train in the old 3.9 were present suddenly with the new engine!! 1. Fall off in power curve at 3400 rpm, 2. misfire at higher rpms under throttle. Also, since I now have an air/fuel monitor, I could see the mixture. Incredibly lean at high rpm, and lean misfire at idle!! ALL SOURCED from the ECU alone. I was stunned.

Can't wait to get a replacement ecu installed....

Anyone have a 95 Disco/Defender/RR 14CUX they want to sell?


DW
I also have had several vehicles with DIS and they are hands down more reliable and water tolerant. I am looking into the Megasquirt as well (thank you atm I had never heard of it before). This D is already on its second ECU (which I found was never screwed back down). The stepper motor has been replaced, new cap and rotor, new plugs, all electrical conections cleaned, and the fuel pressure regulator replaced. The symptoms are much more pronounced when it is cold (which sucks for Wyoming as it is usually cold). I love the D but I am not at all impressed with its engine management system. The complete lack of a reputable dealer in my area makes things even more difficult.
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  #14  
Old December 12th, 2006, 11:47 PM
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I have a chipped 95 Disco 14CU in my '93 110 now, can't complain -- although she does run very rich under full throttle above 4800 rpm (red line is re-chipped to 6000).

DW
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  #15  
Old December 13th, 2006, 12:17 AM
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Anyone in Colorado running the Megasquirt?
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  #16  
Old September 17th, 2007, 01:04 PM
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Anyone at all running Megasquirt?
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  #17  
Old September 17th, 2007, 01:26 PM
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I read a book that I got from Barnes and Nobel on Fuel Injection that has a lot of info on Megasquirt being used for many exotic applications.

http://www.amazon.com/Fuel-Injection...0049760&sr=8-6

Twin turbo, nitrous, supercharged, the lot. I am not that ambitious to do the megasquirt thing but it was a very good read for just understanding your EFI system.

I did find a system in the UK that allowed you to program your EFI on the fly with a laptop using rover components but it was hideously expensive. Cant' recall the name.

In the end I decided that I didn't need that kind of godlike power under the hood and I should worry about articulation instead.
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  #18  
Old September 17th, 2007, 02:28 PM
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I think Hans is running it on an older jeep of his.
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  #19  
Old September 17th, 2007, 02:46 PM
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Quote:
Originally Posted by landrovered
I read a book that I got from Barnes and Nobel on Fuel Injection that has a lot of info on Megasquirt being used for many exotic applications.

http://www.amazon.com/Fuel-Injection...0049760&sr=8-6

Twin turbo, nitrous, supercharged, the lot. I am not that ambitious to do the megasquirt thing but it was a very good read for just understanding your EFI system.

I did find a system in the UK that allowed you to program your EFI on the fly with a laptop using rover components but it was hideously expensive. Cant' recall the name.

In the end I decided that I didn't need that kind of godlike power under the hood and I should worry about articulation instead.
I'll have to see if I can find it the next time I'm at Borders. Wouldn't mind leafing through it.

Quote:
Originally Posted by flippedrover
I think Hans is running it on an older jeep of his.
Yeah, I read another post where he mentioned that. I was hoping it was tried out on a Defender.
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  #20  
Old September 18th, 2007, 07:02 AM
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Dave Haynes
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Quote:
Originally Posted by themaxx
Anyone at all running Megasquirt?
Err, Me... but not on a RV8. I have it on the Ford V6 in my 88" Hybrid. Looking back, artm linked to my site (ep90) way back. Others listed are friends of mine, particularly juracid and getmuddy. I believe my truck was the first MS'ed Land Rover.

I've been involved in a few MS conversions, none has been particularly troublesome. The last one was a 109 on volvo portal axles with a 4.6 RV8 with EDIS.

http://www.flyingspanners.net/index....on=com_content

That truck was put together with a newly rebuilt engine which had never run. Due to various build problems with other vehicles, we tried to start it one Tuesday night and found a hosed injector that hydrauliced the engine. That was replaced on Wednesday and the engine run up for the first time. On Thursday it got an MoT (gov't inspection), and on Saturday it left southern England bound for Russia to act as support truck on Ladoga 2007 for two weeks, with no problems whatsoever.

(If you've not heard of Ladoga, it's a mad competition. I suggest you go to the House Of Flying Spanners http://www.flyingspanners.net and check out the photo gallery.)

Megasquirt has also competed in the Outback Challenge, on Dave Whites 100" Defender, also with EDIS. There are several comp safari racers running MS as well, including a 4.6 Tomcat I had some involvement with.

Dunno what else I can tell you off the bat, Megasquirt is cheap, relatively simple, reliable, and open source - which means if you want something to work differently, you can. You can modify the hardware, or the software, if you have the skills. The current software versions are so comprehensive however, I doub't you'll find you want anything it doesn't already do.

The only downsides I can think of are :-

1) If you need cat. converters for your smog check, you *could* have problems. It requires a high standard of tune, and you could damage the cats while tuning. Also no OBD readout for the inspection guys.

2) You may never stop fiddling with it!

3) There are now so many options for build and for software setup, that it can be a bit overwhelming. Stick with it, it's not as tough as it first appears!

It is possible to stick the megasquirt into a rover ecu case and make it plug and play swappable. Not once you go the EDIS route though ;-) I've got a dead rover ECU here at the moment which will receive an MS, for another 4.6 offroad racer

I don't drop by this forum too often, so if you have any Qs and don't get a response from me here, email me daveatep90dotcom

Dave
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