Coils and ignition (Post split from Joe's Mongrel thread)

[ekvh]

I hope you let us know if you find more that works as I think in years to come ignition parts will be harder to come by. Can you tell us how you got your bigger spark on the 1000? Was it just using top quality wires, 8mm copper or what? I know these bikes will behave a lot better at lower rpm if the spark is good, big, powerful.

Any suggestions if we try and use the sensors off the crank on a 1200 motor? I am doing what Joe is with 1000 heads on a 1200 block. I have the units on the front of the motor, an 85, but I doubt it will work without the 1200 black box..ecu.

 

[Anonymous]

Me? I run a Dyna III trigger plate to the Dyna amplifier right now. Been running 1100 coils and getting over 20K volts to the plugs at idle. I run 8ga. amplifier power cable for ignition wire. The factory skinny stuff can't handle the voltage. I run no secondary resistance and I run 1.3 ohm ballast on the primary side that is switched in or out. I call it running the ignition "hot". I run D7EA's at .045, and I think that is conservative

I did already. It's up above.

The ignition wires I run (if you want to call them that) are Scosche 8 gauge amplifier power cable meant for the car stereo crowd. Very high strand count. All copper though and not the tinned stuff in the link. I'm not talking about the 8mm suppression wire bling - I use 8ga. cable - much like mini welding cable.
Without becoming too technical on the secondary side of the ignition; I've nearly zero resistance plug wires, boots without the 5K ohm resistors and roughly twice the D7EA plug gap of the service manual. On the primary side of things; I'm running a 1.3 ohm ballast resistor and the Dyna III set-up. That's what I have right now, and that's over 22Kv at idle. I'm using the 1100 coils so that I can use my own wires (which fit like a glove as though they were made for the coils female ht lead socket.)

Some very simple optimization of what's already there.

Not the best picture, but you can see these steel-clad copper pins I made to replace the spring and resistor in a set of NOS NGK caps (can't disassemble the new caps like you could the old ones):

 

[joedrum]

thats the way i had the mongrel set up on the ends ...with dynaS and coila and had the plug gap at the same opening

 

[ekvh]

I have all those pieces except the wires. I'll have to give that a go. I have some 85 Magna coils too, I will see what resistance they have.