KZ1000J or GPz1100 engine into 750 frame ?

Hey guys, anyone here do this swap ?

Wondering what all is involved with it ? Was going to do an 810 kit but rather just put a 1000/1100 in and get some extra grunt that way.

Its for my project bike, and yes I can weld, and yes I have access to a VERY good machinist

Just want to know what I'm getting into before I hunt down and buy an Engine :evil:

Been a few that have done it.
One post a while back with some instructions, but it's been too long to remember.

That's putting a large engine into a 650, which is basically the same size as the 750.

Here's a few:

Thanks, I've seen the older 900/1000's in a 650 frame before, wondering if the 81 and up J based 1000/1100's go in without too much trouble.

Just finished mine. GPZ1100 engine in a GPZ750 frame. The front engine mounts had to be modified. I kept the engine as low as possible so the valve cover would come off for valve adjustments. Also the engine is not quite centered about 1/8" set to the right, not noticible unless one was to measure it, it created no problems though. That was unavoidable due to the size and demensions of the engine. Just remember one change effects other components.

Thats awesome baldy. Gorgeous bike for sure.

Here's another one in a KZ650 frame...

Great.... I didnt need to see this thread. Now I want an 84 750 turbo with a gpz1100 motor.

Found a donor, Zephyr 1100 engine

Only missing the carbs, which are supose to be 34mm CVK's, but I'm thinking if I'm going with the 1100 mill, I should reinvest in some flatslides anyway. Sure wish i HADNT sold my rack of 34mm Mikuni RS's now.

Hmmm,obviously his idea of a good running engine differs from mine. I'm sure it ran great before it was dumped and smashed the ignition off and broke the engine castings

Oh well, guess the hunt continues.

Ok yall.....I need some help. I have a 78 kz650 motorcycle, that I have put a 76' kz900 into. Ive got it all in there but I cant get any spark. I was wandering if anyone could help me out. Ive got power to the coils, but no spark? Also, the harness from the kz900 engine has 3 wires coing from the stator where the 650 harness on the bike has only 2. I was wandering how to hook these up. Any help would be greatly appreciated thanks

oldskoolatheart wrote: Ok yall.....I need some help. I have a 78 kz650 motorcycle, that I have put a 76' kz900 into. Ive got it all in there but I cant get any spark. I was wandering if anyone could help me out. Ive got power to the coils, but no spark? Also, the harness from the kz900 engine has 3 wires coing from the stator where the 650 harness on the bike has only 2. I was wandering how to hook these up. Any help would be greatly appreciated thanks

u will get more help if u do a separate post in the electrical section. there r a few gurus here but they wont see your post burried here.

Ok thanks.