Pertronix info please

[1lo620]

So I feel I fried my Pertronix ignition. Not sure how it happened. So I have decided to get a new Ignition and Pertronix coil. So I can by pass the ballist resistor. 

Can anyone tell me what coil I should get to run with Pertronix 1741.. And how to wire it up correct. I added a picture to show how it is hooked up now. 

This set up was working before I swapped out engines just recently. I had the truck running then it just shut off. Now no spark. Need help. Thanks

[datzenmike]

Check for loose wire. Does it fire up while starting but quit when the key is released?

 

Pertronix use the stock coil and a ballast resistor. It only replaces the points nothing more. No need to replace the coil but if you get rid of the ballast you should get a coil with the same resistance as the old coil + ballast. If you use a coil with lower resistance the increased current will blow the Pertronix up sooner.

 

Coil resistance about 1.5 ohms + ballast resistance about 1.5 ohms = about 3 ohms.

Coil without external ballast about 3 ohms.

[banzai510(hainz)]

coils dont go bad all too often. I have never had one go bad

 

Isnt there instructions with the new kit?

[banzai510(hainz)]

1 hour ago, datzenmike said:

Check for loose wire. Does it fire up while starting but quit when the key is released?

 this matters what Mike said

[mojojojo78]

If you are replacing your Pertronix Ignitor I get the Ignitor II. It is far superior to the first generation. My first Datsun I had back in 97 I put an Ignitor I in it. It lasted less than a year then failed. Every car since then I have used the Ignitor II and have never had a failure.

Ignitor II part number would be 91741

With the Ignitor II they recommend removal of the ballast resistor. It is designed to take the full 12V.

https://pertronixbrands.com/products/pertronix-91741-ignitor-ii-adaptive-dwell-control-hitachi-4-cyl-datsun?variant=31797069086756

Check out the installation instructions.

[datzenmike]

Then the coil will have to handle twice the current if the ballast is removed*. It's going to get hot! In that case get an EI coil designed for 12v from a '79 620/S10 200sx/A10 or the '80 720. These all had matchbox EI distributors and matching coils. A coil from any Z series engine will also work.

 

*Says in the instructions: Pair with a Flame Thrower Canister Coil for optimal performance