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914World.com _ 914World Garage _ Ballast resistor

Posted by: 80cap Jan 29 2017, 11:38 AM

While trying to install my wire mess I found a ballast resistor. Did a 914 use them ?
I am not running breaker points.
Brian

Posted by: cuddyk Jan 29 2017, 11:59 AM

The ballast resistor is usually necessary (depending upon your ignition setup), but often built in to the coil. On my car with an electronic ignition module I needed an external ballast resistor or the coil would get scorching hot and stop firing.

Posted by: Dave_Darling Jan 29 2017, 01:19 PM

What does the ballast resistor look like?

The 914 did not have an external ballast resistor in the coil circuit. The coil has enough resistance that it is not needed.

Some D-jet cars (73 2.0 at least) had a resistor in series with the head temp sensor. That might look like a ballast resistor.

--DD

Posted by: 80cap Jan 29 2017, 04:33 PM

Dave
Here is a picture of the resistor.

Attached thumbnail(s)

Posted by: 80cap Jan 29 2017, 04:35 PM

Another view.

Posted by: Dave_Darling Jan 29 2017, 05:50 PM

Not stock at all. Unless you have a coil that very specifically needs a ballast resistor, I'd leave it out.

--DD

Posted by: Mark Henry Jan 29 2017, 07:09 PM

Many old school FLAPS replacement coils needed it, the OE and bosch replacement (blue) coil doesn't.
Stick with bosch unless you're using a matched coil for something like a pertronix, etc.

Posted by: walterolin Jan 29 2017, 08:10 PM

Identical resistor came with my 70 1.7. Djet.

Posted by: McMark Jan 30 2017, 07:21 AM

Not original, usage depends on coil, use a Bosch Blue coil and toss that.

Posted by: 80cap Jan 30 2017, 08:15 AM

Thanks
It will go in the trash heap that keeps growing!
Brian