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Z1300 Sub-Alternator Kit
This info was supplied by Don Carver, one of our members. Thanks Don! There are a few members that have one of these kits installed on their bikes. They were typically used on sidecar conversions and overseas models. This is all the information we have available on this conversion and these parts are not available anywhere that I'm aware of.
The best way to prevent problems with your existing alternator on any year 1300 is to cut the plug out where your stator wires connect to the voltage regulator & solder the wires back together for a better connection. The plug either gets a bad connection over time or won't carry enough current. Either way it burns up. I find that plug melted on most the bikes I come across, even on the ZN1300 Voyager models that come stock with a sub-alternator. Better to solder the wires & prevent the problem than to get stranded with charging problems or have to replace the stators often because of a bad connection.
The Voyager right side alternator covers won't fit a 79' - 81' model bike because they're shaped slightly different, so you can't use the right side Voyager alternators or covers on these year bikes. However, all 82' - 83' models have dual alternators and though the right side cover is shaped differently and wouldn't bolt to an older 79' - 81' engine, the left side sub-alternator cover will fit. It wouldn't work on an 81' because that year has the ignition pickups mounted on the left, but it will work on the left side of the 79' - 80' models. I know of at least one member who has mounted a left side Voyager alternator, cover and regulator on an 80' KZ1300 to give it dual alternators.
To do this conversion you'll need the whole left side assembly with the starter clutch and gear because the starter ring gear and idler gear are different from a KZ and must be swapped together. So you just need to swap everything from the left side of an 82' or newer KZ or ZN motor. It would even be better to get the Voyager starter too if you're using parts from a Voyager motor because the Voyager starters are 4-pole versus the 2-pole KZ starters and they have more starting torque.
The only issue in this conversion is the rotor bolt or crankshaft bolt that holds everything on to the end of the crankshaft. The 79' - 80' KZ bolt is a different diameter than the ZN bolt and most likely the 82' and up KZ bolt is also the larger diameter and they're also longer bolts. So you need a small diameter 79' - 80' KZ bolt that's longer and this is not a common bolt. As I recall this is a left hand thread so you'll end up having a custom fastener manufacturer make this. I'm sure this is a high strength heat treated bolt so it won't be a piece of cake to have one made.
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