Installing a 900 crank into 1000

I have a 79 KZ1000 LTD. What is the procedure to install a 900 crank? I read the stators mount different? Thanks

Assuming you don't have the MKII style motor I thinks its as easy as swapping cranks and the stator's rotor over.

Later, Doug

In my opinion. if u have a MK11 motor, u have the best crank.It is the strongest crank,it has the strongest altinator(most output.), and it has a stonger bolt to hold on the stator.100 ft lbs as apossed to 18ft. lbs.
The only advantage to a z1 crank is it will rev faster.
If u go z1 u just have to change the cam gears with it.
I have a z1 welded crank and slotted cam gears if u are interested.

I wish it was a MKII. It is an 79 LTD B3. So I have to buy an early stator? What years will work? Will I be losing voltage output?
I have a spare Z1 crank with low miles and figured maybe it was a reasonable route to go to have it balanced and welded ready to drop in when I rebuild in a year or two? I was trying to accumulate the parts for a rebuild to minimize the down time, so I would not have to wait weeks while I sent parts out to the machine shop.

The 1979 and 1980 LTD's both have the same crank according to the Kawasaki USA website. It is part # 13031-1018.The other crank that was used in 79 and 80 is the #13031-1040, in the A3&4, D3, E2, and G1.

just count the teeth on the cranks gear sprocket. if it has 16 it is mk11, 15= kz.
The mk11 stator , rotor,and cover are dif.the output is 20amps. 50volts output A.C.
kz=?

Like I said, it is not the MKII. Just plain old KZ1000. Do I buy an older alternator to make the conversion work?

the taper is dif on the end of the cranks for the mk11 and kz. (z1 ank kz are the same taper but the z1 has the key and small rotor bolt.) so u need the matching rotor stator and cover for a mk11. if u already have a kz crank in it, then u allready have the right rotor and cover. so u are good to go.
By the way ,the electrics are interchangable(reg/rec.)

you will need a stator and cover off a z1
the teeth are the same.
they rev better because a 900 crank is 14lbs lighter.
my advice is to send the cap out and have it milled and buy the support plate from ape.
oh yeah, don't forget to replace the cam chain. cheap insurance.
you will also have to change the ends on the stator. no big deal.
welding the crank is not really a must if your not drag racing.
but it sounds cool when you say you had it done.
we build 1200's and flog them with 900 cranks and have yet to twist one.
we did break a crank in a 1105 motor once but that one didn't have a support plate.
feel free to pm me for questions or pictures.

kawsakiman wrote:

you will need a stator and cover off a z1.
you will also have to change the ends on the stator. no big deal.

why would he have to change the stator and cover. I have been told by guys that have dont this. the kz stator will fit a z1 crank.

Have u found personaly that this is not the case?

the magnet and stator are different.
they are different charging systems.
the magnet is on the crank and the stator is in the case.

Yes i am aware that the z1 and kz magnets are dif. but i was told by another that he has ued a kz magnet on a z1 crank.
Have u ever tried? i only have a z1 and a mk11 ,and they have a dif taper on the cranks end so u cannot interchange them.