New spark plugs

toffe_old · August 31, 2008 at 1:27 PM

I have just changed to pertronix ignitor and their black coil.

Can anoyone reccomend me a good spark plug for this set up?

zray · August 31, 2008 at 3:29 PM

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I have just changed to pertronix ignitor and their black coil.

Can anoyone reccomend me a good spark plug for this set up?

Autolite 45

Z. Ray

66gtk · August 31, 2008 at 4:01 PM

What about the gap??

jwc66k · August 31, 2008 at 5:58 PM

Read what Pertronix recomends.

Jim

toffe_old · September 1, 2008 at 2:00 PM

Pertronix reccomends to increase gap by .005 compared to stock.

What is stock gap on a normal HiPo?

zray · September 1, 2008 at 9:30 PM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

Pertronix reccomends to increase gap by .005 compared to stock.

What is stock gap on a normal HiPo?

Hi-Po 289 .028 to .032 per Ford Mustang Shop manual

all other 289 .032 to .036 per Ford Mustang Shop manual

Z. Ray

toffe_old · September 2, 2008 at 4:50 AM

Thanks,

Ill try that!

Kman_old · September 2, 2008 at 6:57 AM

I have the original pertronix along with their coil and have run a .035" gap for years and the car runs great.

Jack

BIGERMIKE_old · September 3, 2008 at 9:44 PM

K Man how did you run the + wire to the coil. Did you run a new wire with 12 volts to the coil.

Kman_old · September 4, 2008 at 7:02 AM

Installed the Pertronix exactly per the instructions that they supplied with the unit. I never ran an new 12v wire though I have heard that other people have needed to do this to get it to work properly. It has been in the car for 9 years with no issues of any kind so far.

Jack

toffe_old · September 4, 2008 at 8:23 AM

I also installed it excactly per the instruction from Pertronix.

I talked to Pertronix and they told me that there was only nessecary to run a new wire if the + wire on the existing coil does not read 12V.

BIGERMIKE_old · September 7, 2008 at 4:47 PM

I have used the pertronix for 15 years on my car also. I have never had any trouble. If you use the factory hook up you are not getting 12 volts at the coil. I just wanted to know if anybody did run full 12 volts to the coil then you would get a hoter spark because you do not have the built in resistor wire.

BoS_old · September 7, 2008 at 8:58 PM

Mike,

I believe you will burn the coil if you have a constant

+12V on it. It's only supposed to be +12V when you start the car

and then it's reduced to +9V something. Hope I am correct now

as I take it from memory.

/Bo

toffe_old · September 10, 2008 at 8:46 AM

I don't think this is true because there is a resistor built into the coil from Pertronix

round2K_old · September 10, 2008 at 4:52 PM

The purpose of a ballast resistor is to lower the voltage across the points and reduce the prospect of burned points. I have run retrofit electronic ignition systems (without points) in a variety of cars and removed the ballast resistors as a regular practice. In some cases the system manufacturers even advocate removal of the resistor to improve system performance. Ford uses a resistor wire, as opposed to a fixed ceramic ballast, and it is not as easily bypassed, but still doable. The intent of bypassing the resistor during starting and going directly to the coil is to offset the lower available voltage during cranking.

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