<VV> Resistor Question - Update

[BobHelt at aol.com]

Hi Bill, 
I know that I'm coming in here late but your and Mark's comments about  
needing a full 12 volts concerns me. It is generally not necessary and often is 
 excessive voltage depending on the coil you use. See below.
.
The correct connections for a Pertronix depends on several things. If you  
are going to run an Ignitor I you first need to determine the coil you want 
to  use. If it is one of Pertronix's Flame Thrower coils, you MUST determine 
which  coil you got from them or a vendor. Pertronix's literature will 
point you to a 3  ohm primary res coil for six cylinder use. But you really want 
the 1.5 ohm  pri res coil for Corvairs and it is listed as an 8 cyl app. So 
use a good  ohmeter and check the pri res. 
 
If you are using the correct 1.5 ohm coil or a stock Corvair coil, then you 
 WANT the ballast resistor to remain in the circuit. But if it's a 3 ohm 
coil the  ballast restistor needs to be removed from the circuit. Then the 
hookup would be  the black Pertronix wire connected to the coil's minus 
terminal. The plus coil  terminal will have the the stock wire going to it and NOT 
12 volts,  but the voltage from the ballast res. The red Pertronix coil then 
can either be  connected to a switched +12 volt source or the + coil 
terminal. So the only time  you really want the Pertronix connected to +12 volts 
is for a 3 ohm coil or  possibly to the red wire.
 
Running the 1.5 ohm coil on 12 volts (without the ballast res) will  
overheat it and possibly burn out the ignitor or at least shorten its life.  
Besides it won't give you a stronger spark since the spark comes from the  
saturated coil core that saturates on 6-8 volts.
 
For an Ignitor 2, you should use the 0.6 ohm coil and wire it up the same  
as the Ignitor I with the ballast resistor per the Pertronix web  page.
 
Regards,
Bob Helt
 
 
In a message dated 11/8/2011 6:19:37 P.M. US Mountain Standard Time,  
gojoe283 at yahoo.com writes:

Thanks  Eric.  I am aware of the need for a full 12V for Pertronix.  On the 
 69 I apliced a wire from the engine harness, but did a messy  job.