As you say interesting, And well done.
I popped into my local motor spares shop this morning to see if they had any information on ignition coils. Their catalogues don’t give any spec but list the coil ref numbers for different manufacturers.
Lucas DLB 198
Bosch 0- 221 122 360/390
0-221 122 334/364
127 020 015
0-221 118 307/327
Intermotor 11410
GCL143
I suspect the different numbers are for the different connections on the coil, blade, male, female, round push on etc the actual coil properties are the same.
I did find a reference on the net that stated the 65dm4 needs a 1 ohm coil to work properly
So the GCL 143 DLB198 seem to hit the spot.
I don’t have the original distributor fitted by ERA I have the Metro dizzy. I think the only difference was the advance curve. That won’t matter if I have the Aldon system
I did find the Intermotor site and with a little cross referencing you can get a lot of information. It looks like a dry coil and not a wet one.(
you learn somthing new every day)
http://www.intermotor.co.uk/
Now I need confirmation of what connects to what