Thanks Sam, I'll get some tomorrow. In the middle of annual inspection, so it's still opened up.A photo of the back of the alternator showing the wiring connectors would be helpful. This is most likely an automotive Nippon Denso.
Thanks Bruce!Looks a lot like my Nippon Denso on my Aerosport IO-360 on my -7
Info from my 'parts log' has this . . . (cant explain difference in numbers in the Notes)
Model # 18504-6220
Part # 6220W/DSP
Notes; Nippo Denso / 100211-1680, aka P/N 12189N.
Hi Sam,A photo of the back of the alternator showing the wiring connectors would be helpful. This is most likely an automotive Nippon Denso.
Hi SamThe alternators suggested above both have different arrangement of the terminals than the one Stephen is showing us........
I thought it might be a 14184 but that is an externally regulated alternator. Does your plane have a voltage regulator? Probably not since I don't see a Field terminal.
If you need a replacement you might consider going to the 14824 or 14684, both are a popular internally regulated unit that is often available over the counter at your local auto parts store. They do not have over voltage protection other than the internal regulator.
Thank you so very much. Great info.OP has a Mitsubishi alternator without internal regulator. You could replace your Zeftronics voltage regulator with a B&C which has overvoltage protection, and keep the existing Mitsu alternator.
The pic below shows the same architecture as OP showed above which proves it's a Mitsubishi, but the one below has a built-in regulator (1984 Honda Civic, which came with Denso or Mitsu).
View attachment 65191