AQ170 ignition coil options.

[Ventura]

I have an old AQ170B with points distributor and a Bosch GT40 coil with no ballast resistor in circuit. Is this setup ok to run with or will this eventually cause spark issues??
If not ideal what is the best coil setup for points ignition? Have read conflicting information on these engines should only have a 10v coil with a ballast resistor yet have seen alot of engines with 12v coils only?

 

[Bt Doctur]

spec says its a non-resisted coil, so using points you need a ballast resistor

 

[Ventura]

Thanks Bt Doctor, will put a ballast resistor in series with the positive to coil. Hopefully it hasn't cooked the condenser as I dont know how long the engine has been running like this.