This write-up will work with
virtually all Honda Civics and Acura Integras (Preludes and Accords
already have an external coil).
Obviously, bigger is usually better, but why is this
upgrade important? On a stock engine, this upgrade will
probably not do much. In a boosted, sprayed, or high
compression application, the extra voltage along with the capacity
of the larger coil will yield more consistent power output.
The larger coil will allow for better recovery after
a discharge. After the coil discharges, it has to build it's
electric field back up for the next spark. High rpm
applications will definitely need a bigger coil to ensure that the
spark is steady and consistent. Ideally, having separate coils
for each plug is the most advantageous, but for the sake of a good,
low cost upgrade, the external coil conversion will work very well.
- socket set
- screw drivers
- wire cutters
- wire crimper
- soldering iron
The first part of the process, is to remove the
distributor for easier access to the components. However, you
do not need to remove it. If you can do the work while the
distributor is on the engine, you can avoid having to set the timing
once it's finished.
If you plan to remove the distributor, take
the time to remove the coil first. Start by removing the cap,
the rotor and the cover under the rotor. Remove the two screws
that hold the coil, and you should end up with a distributor that
looks like this:
Here is a shot with the coil back in the
distributor. Please note the wires you have to remove from the
Cut the original connectors to the coil and
strip back the insulation.
The polarity of the wiring is very important.
The Black/Yellow wire is the positive wire. The Yellow/Green
wire is negative. I chose to solder the wiring for a solid
You can use tape or shrink tubing to cover the
joint. I fished the wire through the rubber grommet
on the bottom of the distributor. I used a pair of small side
cutters to carefully cut a section between wires, and pushed the new
Once the wires are solder (or crimped) and
tucked, install the cover.
Install the new supplied rotor
Install the new cap.
If you've removed the distributor, install it
on the engine. Attach the new wiring to the new coil. I
used crimp ring terminals to attach the wires.
Install the coil where it is most convenient
for you and connect the plug wire to the cap and coil.
Make sure to set the timing on the distributor
(if you removed it) and enjoy the new spark!