12 replies to this topic

[Fozz]

hello,

 

i bought recently a brand new elec.distributor( ADU3825MS) and new coil (GCL143).

 

yesterday i tried to install them both on my daily, but nothing worked.

 

as far as i know, its plug and play ( red is pos, black is neg).

 

i tried then a coil from my other mini (also elec.distributor), but also....nothing, no spark.......

 

i took the "module" out this afternoon, and should i diagnostic something between + and - ? cause my voltmeter didnt changed.

 

 

thx, F.

Attached Files

•  IMG_20190331_181830-min.jpg   30.98K   17 downloads

[Spider]

Ah, sorry,,,, Black is not Negative on these. The Negative is done via the Body of the Distributor, through the engine block. Check that the Plate in the distributor body has a small earth wire between the plate and the distributor body as well.

 

The Black wire connects to the -ve Terminal of the Coil.

 

They really should be supplied with a different colour wire.

 

The Module also needs a reluctor / magnetic ring to make a spark, which I don't see in your pic. It fits on the Distributor Shaft under the Rotor Button.

[Fozz]

Moke, i connected the red one to plus on coil, and black one to neg.on coil...it has a earth wire.
I just took it out of the package and installed it on my mini.

But what i dont understood...gcl143 is a non ballast coil for elec.distributor. they should give 3ohm if im right...but i measured 1.5 ohm...

[Spider]

Off hand, I'm not sure what that coil should be, but always best to check them.

 

What's the spec on the module say in regards to the minimum coil resistance ?

[cal844]

A GCL143 Coil is needed for an electronic ignition setup.

If you have a pink and white wire at the coil +, you.want to at least remove this and tape the connection up. Ideally you want to disconnect it and remake the connection in the loom for the 12 volt wire which will supply 12 volts to the GCL143 coil.

I apologise if this doesn't make sense, lack of sleep and a long day

Edited for speeling

Edited by cal844, 31 March 2019 - 09:51 PM.

[Ethel]

GCL143 is for factory fitted Lucas electronic ignition (65DM4 dizzy) it should measure around 1 Ohm across the + & - spade terminals. I would imagine yours is intended to work with a standard 3 Ohm coil as it's an aftermarket upgrade of a points dizzy - I'm sure Minispares can confirm.

 

The red wire powers the transistor circuitry. The black wire functions the same as the original black/white wire that was  earthed in the dizzy via the points. Breaking the contact with earth is what generates a spark when the magnetic field collapses in coil and creates a voltage spike in the secondary windings that's strong enough to jump the plug gap. There's no continuity between the red and black, they both earth via the mounting. 

 

I can see a reluctor on the shaft, Moke must be too far away to see clearly 

[Spider]

I can see a reluctor on the shaft, Moke must be too far away to see clearly 

 

Mate, if you can see one, I'm happy to take your word for it !!

It does come up a bit small on my screen.

 

From the rest of what you've said here, unless there's some protection circuitry, the Module may now be toast if it's been tried with that coil.

[Ethel]

Could be, but you'd hope it was designed well enough. It's not as if it seeing full alternator voltage is unlikely.

 

 

It is purpose built as electronic, so the reluctor "peaks" are in place of the points cams rather than an adaptor fitting over them. Easy to miss if the piccy is small.

[nicklouse]

Yep the lobes are not lobes but pointy things. nothing like the old Lucas triggers or the aftermarket triggers that pressed onto the dizzy lobes.

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[Fozz]

Hello everyone, problem solved. The aftermarket distributor needs to work with a 3 ohm coil, ( like ethel said) DLB111 should be the correct one ( i mailed to minispares). It seems like my module is indeed toasted

[Spider]

Hello everyone, problem solved. The aftermarket distributor needs to work with a 3 ohm coil, ( like ethel said) DLB111 should be the correct one ( i mailed to minispares). It seems like my module is indeed toasted

 

Good news but bummer.

[Ethel]

If you can, adjust (reduce) the gap between the reluctor and pickup, ensure there's a good earth (white wire in Nick's piccy) and try again with the correct coil. You'd hope it uses modern, robust, electronics like a mosfet and isn't that fragile - if you didn't get it started it will only have seen battery voltage and that will have been dragged down further by the starter motor.

 

It's disappointing if Minispares didn't make the coil requirements clear, in the online description or in the fitting instructions.

[divxmaster]

@Fozz,

I just bought the same distributor as you ADU3825MS, and I am very glad I found this post, re the 3 ohm coil. Luckily tested ours and it is already 3 ohm.

I didn't receive any fitting instructions at all (as mentioned in the by Ethel just above), did you recieved any with yours?

 

Cheers