Kokasun and Nippon Denso
Suzuki used two suppliers for their alternators, regulators, starter motors and points ignitions on the GT550. The alternators had quite different outputs:
- Nippon Denso producing 28A @ 6000 RPM
- and Kokusan producing 15.5A @ 6000 RPM
Alternator/regulator and points components are not interchangeable, although the assemblies as a whole may be interchanged (a complete points assembly for example - but not the points and condensors by themselves) so restorers do need to ensure they know what they have. They were installed as follows:
|J (1)||K (1)||L (2)||M (2)||A (2)||B (2)|
|J (1)||K (1)||L (3)||M (3)||A (3)||B (3)(4)|
Note 1 - so far at least, no data is available on which countries these were used in.
Note 2 - fitted as standard equipment on the E1 General Export machines.
Note 3 - listed as also being installed on E3/E28 North American machines, but so far at least only Nippon Denso units have been observed in Canada (E28).
Note 4 - fitted as standard on B models sold into some European countries. Refer to the Country Specific section for additional details.
Additional information is still being collected and combinations of ND/Kokusan electrics have been found in the field - as more verified data becomes available, this page will be updated.