77 650 B ignition system swap ?

working on a complete rebuild for a guy and he wants an electronic ignition system but doesn't want to pay for a dynatec . he wants somthing similar to what is in my bike 1982 750 ltd. anyone know what is compatible ? or should i just go with new points and condensers . the wiring was totally melted ,got new harness ,but worried about little black box ,igniter i think. any advice greatly appreciated.

.

thanx martin csr. i think he should bite the bullet and get the dyna or the original type points and condensers .

Both the 650 and 750 electronic ignitions are bolt on, you can even bolt on a 83-85 GPz750 ignition if so inclined. All are better than the Dyna.

And no need to change the charging system. Charging and ignition are separate systems - points, Dyna-S and factory electronic ignition will all work with the 77 excited field alternator.

steell thats good to know , cus i did notice 3 yellows coming from field coil . whats the procedure to connect these to new electronic ignition ? steell, what your saying is the 650 and 750s are compatible ? if so , could you tell me which would be cheapest , and what parts do i need exactly ? you guys rock. this type of thing isn't my specialty . i can make existing things run good and look new but this is new to me . thanx for the help!!!

OnkelB wrote: And no need to change the charging system. Charging and ignition are separate systems - points, Dyna-S and factory electronic ignition will all work with the 77 excited field alternator.

As OnkelB already mentioned, charging and ignition are two different systems. You are working on the charging system if you have 3 yellow wires on the left side. Those 3 wires come from the stator, not the field coil. The field coil has a green wire coming out of the left side engine cover.

The ignition system has a black wire and green wire on the right side of the engine, under the smaller cover.

You will need the 750 pickup plate, advancer rotor, igniter box, and coils, to convert to a factory system.

Electronic ignition makes the spark plugs spark.

Charging system (alternator) puts the juice back in the battery and provides electrical power to everything else.

And you really don't want to use the 83-85 GPz750 electronic ignition. Loudhvx wouldn't have a problem doing it, but I've used it one time on a 650 and won't do it again. Real PITA

The yellow wires can put out at least 50 Volts Alternating Current, far more than the ignition system could stand as it needs about 12 volts Direct Current to produce a spark.

As mentioned, these are two different systems and should not be mixed.

Oh yeah, like Steell mentioned, some of the Kawasaki electronic ignitions don't use the mechanical advancer, most notably on the GPZ 750 series. I've never done it, but heard it's slightly different in the mechanical fit, which makes it more difficult to install on a non-gpz motor. Stick with the mechanical-advancer type ignitions.

thanx for the info everybody . so the coils have to be changed ? just thought they were standard . and the igniter , wiill it just plug in to harness? there is some kinda little box about the size of a pack of matches that dont have any markings , is this the igniter?

This is what the igniter looks like, that you want to use.



This is what the pickups look like.



This is what the rotor/advancer looks like (but without the hardware store bolt).





The factory electronic ignition coils look basically the same as the points coils, but are different inside.