97 Disco has blown 6 Ignition Modules, Help

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Originally Posted by bee utey

Just try the GM module on the OEM Rover coil. One forumite here recently reported his OEM coil running well on the #024 module for at least the last month.

Your wiring looks about right. On the Bosch 024 module the original pick-up wire is blue to #3, red to #7. Then there is the earth shield (black) that goes to a mounting screw on the module, as per pics in my post below. The simplest method I think is just to install the GM module to the heatsink that the original Lucas amp sat on. You will need a short 2 core patch cable from the GM amp to the coil, insulated female spade connectors at one end and 5mm ring terminals at the other end for the coil. You will need 4mm bolts and nuts long enough to secure the new module to the heatsink, and a drill bit for the heatsink. And two crimp terminals for the #G and #W connections.

I recently purchased a GM module off ebay which I might test on an OEM coil for something to do. Something to do in my spare time, I guess.:cool:

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Thanks,

Let me see if we are talking about the same thing. When you say a short 2 core patch cable, do you mean 2 wires, 1 each for terminal B/ 15 & C/16. each with a ring terminal on the coil side and a female spade on the other?

I've looked at this picture a dozen times and finally see the module, duhh. It looks like there are 3 wires in the Disco harness, red, blue and black. The black wires is the earth and runs to the earth mountin screw, correct? 97/98 is 2 wire?

Do you know the size of the terminals in the 97/98 Dissy wiring? Do I need to get corresponding male or female terminals to attach?

I may luck out and find a matching connector, does it have a name or other application?
https://www.aulro.com/afvb/


I may purchase a spare Coil anyway and I will ask about the MEC type. BTW Does HEC refer to Hall Effect Coil? And what does MEC stand for?

I do belive that I have 90+% now. Thanks Bee utey!

As I look at the various picture, I begin to see other things that I want to clear up.

DO I need a capacitor? What spec or are they all the same?
I am not sure if our coils is round or not, but I suppose a holder would be in order too.

Besides wiring, what else do you think I might need to get before we leave?
Thanks!

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Let me see if we are talking about the same thing. When you say a short 2 core patch cable, do you mean 2 wires, 1 each for terminal B/ 15 & C/16. each with a ring terminal on the coil side and a female spade on the other?

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Yes

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I've looked at this picture a dozen times and finally see the module, duhh. It looks like there are 3 wires in the Disco harness, red, blue and black. The black wires is the earth and runs to the earth mounting screw, correct?

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Yes

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97/98 is 2 wire?

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Same as picture, 3 wire

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Do you know the size of the terminals in the 97/98 Dissy wiring? Do I need to get corresponding male or female terminals to attach?

I may luck out and find a matching connector, does it have a name or other application?

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Look I don't do complicated. Just cut the **** plug off the Lucas amp short connector cable and crimp 2 lugs on the blue and red ends. Like in the picture. Or find a wrecker and buy the short bits and crimp them up yourself.

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I may purchase a spare Coil anyway and I will ask about the MEC type. BTW Does HEC refer to Hall Effect Coil? And what does MEC stand for?

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Bosch-speak for high energy, medium energy, coil. It's part of their part numbers. e.g. MEC723. Coils can't see what type of sensor your dissy has, the module sees the sensor. I can't tell you what to buy, find a shop keeper who knows about coils for 80's cars with electronic ignition. Bosch list a cylinder coil BIC290 that some people have used on Discos. Not me.

Oh and the capacitor is a radio noise suppressor, the one already attatched to the disco coil will suffice.

This afternoon I picked up a module and an Accel Universal Coil, tube of dialectric grease for Heat sinking.

Thks is the coil SUPER STOCK COIL-POINTS - ACCEL Coils & Accessories - ACCEL

Yes it says points, but my parts guy says it's a universal:

• Rated at 42,000 volts
• Great for points ignition systems

ACCEL's Super Stock coils are high-performance replacements for OE canister style coils. Improves starting, idle, throttle response and top RPM power. Works with OE ignitions and computers. Alkyd tower prevents flash over.


Accel makes a model 8145 that says for breakerless, (not in stock, but can order).

Thanks

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Originally Posted by Halsie

This afternoon I picked up a module and an Accel Universal Coil, tube of dialectric grease for Heat sinking.

Thks is the coil SUPER STOCK COIL-POINTS - ACCEL Coils & Accessories - ACCEL

Yes it says points, but my parts guy says it's a universal:

• Rated at 42,000 volts
• Great for points ignition systems

ACCEL's Super Stock coils are high-performance replacements for OE canister style coils. Improves starting, idle, throttle response and top RPM power. Works with OE ignitions and computers. Alkyd tower prevents flash over.


Accel makes a model 8145 that says for breakerless, (not in stock, but can order).

Thanks

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You do not use a points coil on electronic systems. This coil is only universal for all points cars. Buy the one for breakerless systems if you have to.

This is turning into bigger than Ben Hur :(

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Originally Posted by Halsie

[*]Rated at 42,000 volts[*]Great for points ignition systems
ACCEL's Super Stock coils are high-performance replacements

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Using super duper coils will take out and burn the original LR spark leads :twisted:






Given the location and the quality of the local Trades and Services of where this vehicle is located ......


I would stick with the ignition amp that Bee utey has pointed you to, Replace and use the original LR coil + use a good set of spark leads

Bee utey uses Bosch gas leads, I use Champion SS gas leads ... In the USA, you have a brand called Magnacore.
Use either the NGK or Bosch standard spark plugs



..... Always try to stick to the KISS method ....
If you keep it simple, then it is much easier to service these parts at future dates ....
If you make it complicated with aftermarket parts, then your future mechanic will be "lost" :confused:


Cheers
Mike
:)

Thanks guys, especially for the patience with a newbie to LR's.
I will trade coils for a breakerless ignition. The guy that helped me today doesn't know what you guys know about what we are doing, but he went right to the bin and pulled the module I wanted. All the other fellows couldn't do that because that module wasn't for a LR.

THe coil was WAG, not a SWAG, so we will trade it for a closer to stock coil as it's really a spare.

I will get pretty familiar with the Disco for about 6 weeks and if things go as planned, I will make an additional 3 conversions for our 2, the hosts and one for a spare.

Cheers and GBU

Hi Mates,
I am back in the USA after being in Africa 6 weeks and wanted to give you an update on the conversion. It went well, no more blown modules and at a cost of under US$40 per conversion using a GM Early HEI Module due to the unavailability of the Bosch.
Thanks bee utey and the rest of you.
I have pics, just don't know had to insert.

Halsie

Excellent!

I haven't yet tried the Chev module I got, I've been too busy. Good to know its working.

As for pics, use the "manage attatchments" button to download pics from your computer. The button is about 2" below the "submit reply " button, in the "additional options" field.

Ok here's my attempt at uploading the pics.
Attachment 37410
The Mission Team and the Disco (Landy in Zim) with the new ignition.
Attachment 37414
Your's truly
Team; Module mounted on additional heat sink made in US prior to departure; Complete setup monted on original heat sink (heat sink grease between module and pre-fab additional sink and again between the original.

SInce I won't be going to Africa on each trip, I have attempted to simplify the installation and ease of replacement with the harnesses.

Again heartfelt thanks from the 28 people that relied on our 2 Discos for transport in May - July and the 25 scheduled to go in Sept-Nov.

Cheers and GBU