Will GPZ1100 1982 Gear assemblies fit a KZ1000

My Z1R has just suffered its first major breakdown, after the hard life it had something had to go. The bottom end is still original and has now done over 200K kms, my sprocket shaft feels like one of the internal bearings has lost its roller cage.
I have a brand new GPZ1100 engine (the bike fell off a truck before a race meeting with 50kms on the clock), now to my question, will the gear clusters, bearings and clutch fit my Z1R casings.
I know the GPZ drive shaft has a bigger diameter and the clutch is different in size.
If this has been discussed previously let me know, I couldn't find anything on this topic

I don't think they are interchangeable with your 1015 engine. I think that the parts are interchangeable only from the 1981-1983 KZ1000J motors.

GPzEric wrote: I don't think they are interchangeable with your 1015 engine. I think that the parts are interchangeable only from the 1981-1983 KZ1000J motors.

+1

yes ...drag racers have used a gpz conversion for years to put a gpz trans into z cases :blink: .... different bearings and some machine work on the shift drum and some gears ..... :S go to dragbike.com and check, fitting GPZ gearbox into kz cases

KZ zone
HDB1130528 Transmission conversion bearing. Allows the installation of a GPZ1100 transmission into a Z1/KZ1000 cases without the need for special shafts. 79.95

Thanks guys, it was just a thought, although Turboking has me want to try. First I'll find out what requires changing before I panic, thanks for your input. :sick:

my 2 cents
install a brand new gpz1100 engine into a 78 z1r frame and ride
whille you ride think about rebiulding the 78 then get it done
that way youll have a fresh motor ready after the next 200 000 km

Sounds great BUT....
The sad part is that the Z1r top end is fantastic, the bike goes like hell, is smooth uses bugger all oil, sounds like new (no rattles), basically the GPZ motor would require a fair bit of work on the topend to equal the Z1R. The GPZ motor itself (from what I heard) requires work to fit in the Z1R frame anyway.

I was really hoping to to just install a new gear set (the easiest option) but the more I read, I might as well fix the current setup.

turboking wrote: yes ...drag racers have used a gpz conversion for years to put a gpz trans into z cases :blink: .... different bearings and some machine work on the shift drum and some gears ..... :S go to dragbike.com and check, fitting GPZ gearbox into kz cases

KZ zone
HDB1130528 Transmission conversion bearing. Allows the installation of a GPZ1100 transmission into a Z1/KZ1000 cases without the need for special shafts. 79.95

Thanks...I learn something new every day.

You might be able to pick up a Z650 frame cheap. ??????????

Harvey, sounds good but I'm starting to get too old to piss fart around with odd bikes. My FJ1200 is giving me headaches without making hybrids.

Turboking, I must've been asleep when I read your comment, somehow I missed the kz zone conversation comment, thats brilliant mate, thankyou :woohoo: :woohoo:

Turboking, I'll go on a limb and ask if the clutch basket from the GPZ1100 (1982) will fit onto KZ1000 cases

Good info turboking -