Coil question

[KAC]

I want to replace the ignition coil on our 95 D1. Is the original Lucas brand ($50) OK or is it better to spend the additional $ for a Bosch coil ($100). Both AB and Lucky 8 also offer a generic coil.
As always, I appreciate everyone's thoughts. Thank you.

 

[robertf]

Ive blown out the sides of bosch branded coils. id go with the generic

 

[KAC]

Ive blown out the sides of bosch branded coils. id go with the generic

Thank you!

 

[discostew]

I want to replace the ignition coil on our 95 D1. Is the original Lucas brand ($50) OK or is it better to spend the additional $ for a Bosch coil ($100). Both AB and Lucky 8 also offer a generic coil.
As always, I appreciate everyone's thoughts. Thank you.

Go to Napa and ask for one for a ford Pickup truck. It’s gonna be cheaper and better.

 

[Greg_M]

Go to Napa and ask for one for a ford Pickup truck. It’s gonna be cheaper and better.

Only do this if you have time for:
4 door?
long box?
A/C?
4x4?
automatic?
sunroof?
Sorry, we don't stock that one.

 

[discostew]

Only do this if you have time for:
4 door?
long box?
A/C?
4x4?
automatic?
sunroof?
Sorry, we don't stock that one.

Those coils are all the same. Take the thing into a Napa and ask them to sell you a coil. If you show him the coil and he asks all that stupid shit then you just need another parts guy.

 

[robertf]

theres no way a napa has a pre 73 ford coil on the shelf
and a post 73 will need a different coil wire

 

[Greg_M]

The coil from my '76 Gravely mower would work. Wait.. I put that on there. I think it's from a ford pickup.

 

[discostew]

theres no way a napa has a pre 73 ford coil on the shelf
and a post 73 will need a different coil wire

I suppose. But it’s so damn common I think you might be surprised. It’s usually two threaded studs sticking up and the electrical spade terminals just switch over.

 

[KAC]

I picked up a coil from NAPA today, told them I wanted a coil for an early 70s vehicle. Coil is marked (external resistor requested). Do I need to add a capacitor for it to function properly?
Thanks again.

 

[discostew]

No I think that means that a resistor is needed to drop the battery voltage at the coil down to about 9 volts. Pretty sure the CUX wire harness has that covered.
The capacitor will trap any spike of AC voltage and take it to ground. Kind of a different function.

 

[KAC]

I did a Google search on difference between coils requiring a resistor, does this seam accurate? "Quite simply, if your distributor has breaker points the answer is yes; if not, the answer is no".

 

[Greg_M]

It's function is to preserve the contacts on a points type ignition. As Stew said it lowers the voltage once the ignition key is in the 'run' position usually. When the ignition is in the 'start/crank' position full battery voltage is applied (resistor is bypassed) to the contact points to help with starting. This is really old school stuff that hasn't been relevant for most of y'all's life.

 

[discostew]

I did a Google search on difference between coils requiring a resistor, does this seam accurate? "Quite simply, if your distributor has breaker points the answer is yes; if not, the answer is no".

You have electronic ignition. No points. Just bolt that thing in there. Just trust that the CUX system has a resistor in there someplace.

 

[robertf]

those resistors in the harness are current limiters for the tachometer input for the ecu and for the cruise control module. no resistor on the power side

 

[Greg_M]

no resistor on the power side

Exactly. None needed. There are no contact points to burn up in an electronic ignition. OP next time ask Napa for a newer coil and avoid this confusion. The coil will be the same but the box won't have this annoying verbage " Coil is marked (external resistor required".

 

[discostew]

It's function is to preserve the contacts on a points type ignition. As Stew said it lowers the voltage once the ignition key is in the 'run' position usually. When the ignition is in the 'start/crank' position full battery voltage is applied (resistor is bypassed) to the contact points to help with starting. This is really old school stuff that hasn't been relevant for most of y'all's life.

Yes that’s right. But you also find capacitors hooked into some electronic ignition systems and described as radio noise reduction.

 

[best4x4]

My local Oreilly's & even Auto Zone always have an MSD or Accel coil in stock in the "High Performance" area.