Our engine builder Abel Ibarra is a big fan of the MSD 8.5mm Super Conductor Spark Plug Wire due to its ultra-low resistance of <50ohms per foot, high EMI suppression from helically wound copper alloy conductor, and high temperature durability. After test fitting and mounting the coils, we cut these wires to length and 3D printed spacers to hold the wires together but spaced.
We made the final prints of the MSD 8232 CDI Coils out of PAHT-CF, a carbon-fiber nylon. We inserted a metal sleeve for the mounting bolts that the coil pack grounding wires will attach to and ground the coils to the rotor housings.
The total CDI ignition system is a little larger than the original IGN-1A setup, but our custom wiring harnesses look very clean and minimal thanks to the help of Cody at Guldstrand Pro Motorsport Wiring. The MSD Power Grid box will not be installed in the car and will only be used temporarily to plug into the CDI box and adjust the power output settings.
Once installed, the coil packs and wiring turned out nice and tidy. The spark plug wires are also significantly shorter than they would have been if we mounted the coil packs in the original location by the firewall and brake booster.
Installed with rubber isolators on a 3D printed mount, the CDI box fit nicely on the front crossmember just behind the intercooler.
Tucked under the charge pipe, the MSD PRO 600 CDI ignition system is complete and ready to send 680mJ of spark energy to our 13B REW engine. While the IGN-1A Smart Inductive Coils are the best option for virtually anyone who does not have a Semi-Peripheral Port rotary engine that revs well above 8,000rpm, the MSD CDI system gives us the spark energy and adjustability to determine the exact needs of a high-revving, high-powered rotary engine for sustained use on a road course. With the ignition electrical system done, we are ready to tackle the engine wiring harness with more help from Cody at Guldstrand Pro Motorsports Wiring.
Stay tuned!
2 comments
Is the msd pro 600 cdi capable of being used for a 4 rotor ?
That’s a great question. Unfortunately no one knows until someone tries it. There was very little information on the ability for the PRO 600 to work on a rotary since the guy who designed it no longer works for the company and there’s not enough information on the circuitry (surprisingly). In theory it should be able to…