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Hi been on hear reading and learning A lot I'm trying to use a 83 kz550ltd complete harness coil pickup coil and rotor exchange to my 77 kz650 b1 can it work only cpl things look like they wont swap like reg/reflector can anybody give me some ideas on how to do this successfully if it all possible thank you look forward to hearing from your comments

The ignition parts will swap with very little trouble.


The charging system parts will not swap easily if at all.

The charging system on the 1977 Kz650 is totally different. You will have to swap the flywheel and stator which will require some fabrication work. If you can swap parts from a much later Kz650, like 1981, or swap parts from a Kz750-four, then you can use the electrical parts from the 550 including the regulator/rectifier.

What type of fabrication will it take I'm pretty crafty and ive got determination all I want to do is ride before good weather goes away and I love this kz650 I bought another kz was told it was 650 turns out it's 550 when I saw it I couldn't let it go bike has only 50miles on it and it killed me to strip the harness and all that off her but one of the carbs is shot I don't want too prodjects it's been a tight year for us any ways any extra advice would be helpful I'm a car mechanic so bikes just lol out my comfort zone but I'm learning fast thank you

Wow. Instead of spending forever trying to make something work that won't why not simply replace the faulty part in the 1977 KZ650 with the correct part and go riding? Ed

650ed wrote: Wow. Instead of spending forever trying to make something work that won't why not simply replace the faulty part in the 1977 KZ650 with the correct part and go riding? Ed

Like Ed said, it's a lot easier to just fix what you have than to machine all new adapter parts from raw material. It's a hell of a lot cheaper too. The 550 and 650 are totally different sized rotors and stators, and the cranks they bolt to are different too.

You can get a regulator for around $50 assuming yours is bad, and a rectifier can be had for $5. A few wires is all you need after that.

Do you have photos of what you have?