Coil Pictures

[Laldog]

Not to get too far into the details, I'm trying to get my coupe up and running after 7 years of stripping, welding and painting.

What I would really appreciate is some pictures of your ignition coil and wiring connections, basically so I can try to discern the correct wiring hook ups. (The wiring diagrams don't seem to come close to the wires in my coupe).

I have Weber carbs, Pertronix ignition unit and a new Bosch Blue coil with the internal ballast resistor.

I guess the 2 modifications (Pertronix and Blue coil) have made it difficult for me to determine exactly which wires still get connected and which are not connected.

Thanks in advance for the help.

 

[sfdon]

I did a pertronix today with the later coil. Use the early coil for the spade connectors that fit on the 1 and 15 posts, keep in mind that the #4 or tower will be a few mm's bigger so use a little dielectric grease to make the coil plug slip on
You can pm me for more info ... or pics.

 

[sfdon]

FYI-

Bosch lists four types of coils for induction type ignition systems

Type E(Black)6V-12V systems for 4 cylinder engines. No resistor needed. Output 13.5 KV. This was the type commonly found on small 4 cylinder engines i.e. Volkswagen, etc.

Type K(Blue)6V-12V systems for up to 6 cylinder engines. No resistor needed. Output 17.5KV. This was the type commonly found on 6 cyl VW and as a performance upgrade for 6V systems and lower power 12V systems. Should never be used on BMWs.

Type KW(Black) 12V-24V systems for up to 6 cylinder engines. Output 22.5KV. For 12V operation use ballast resistor 0.6-1.0 ohms, for 24V operation use ballast resistor 4.5 ohms. This is the coil that came standard on all BMW engines. As you can see going to a Blue coil would be a significant step backwards.

Type KW(Red) 12V systems for up to 8 cylinder engines. Output 26.5KV. Use with 1.4-1.8 ohm ballast resistor. If the ballast resistor is omitted, the points will burn up very quickly. If a transistor trigger is used, then a ballast resistor is not required.

 

[Stevehose]

Here are some pics of my coil/pertronix setup before I switched to a red coil. The wires with the red and blue connectors are from the pertronix, the single black coming off the coil in the first pic is a radio supressor. Pertronix recommends keeping the ballast resistor.