[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]
On 6 Mar 2001, at 9:35, Fuhriman, Mark wrote: > o Will I use same Bosch W8AC plugs? Any advantage to using the platinum > plugs with CDI? Will I need to change the gap? You should stick to the same plugs as well as the same everything else. > o Will I use the same Bosch 7mm ignition wires? Yes. > o Will the rotor need to be changed out to one without a resistor? John Connelly says yes, I have never needed to. But he's working with new parts/new CDI, I've got old parts/old CDI. I think Universal is the decendant of Delta who did the first CDIs. When you get yours, I'd be interested in a schematic for comparison. It's possible that they have switched to a larger capacitor for energy storage and that this extra energy pushes the modern suppressed rotors over the edge. Mine uses a 1uF capacitor. Or it could just be that modern rotors are junk.... > o I guess I will need to drill holes in the cap to allow for the extra > wiring, right? It's not for the wiring. The only change to the wiring occurs on the coil. It's claimed to be for venting the ozone which is generated by the spark. Having 35 years experience with these without venting, I remain skeptical. Keep in mind that the only thing that a CDI will give you is the possibility that it might fire occasionally when the standard Kettering ignition won't. I find that on occasion my car will start more easily in cold weather (-20F) with the CDI. As long as all the other parts of your ignition are in good condition there will be NO increase in power or gas mileage. A CDI may fire worn plugs that a standard ignition will not, but replacing the worn plugs would produce the same effect. The primary benefits of a CDI are virtually infinite points life (due to low point current), greatly increased plug life (due to much shorter spark duration), and more stable timing and less maintenance since the points don't wear. Another advantage of the CDI is that they usually come with a switch that converts back to standard ignition, so changing back for whatever reason is trivial. BTW, watch out for the 400V on the wrong coil terminal. If you connect a timing light there it's history! - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Pitch in! Send your pledge of support! mailto:support@vwtype3.org