I put a ninja 600 motor in a go cart many years ago. It was the most dangerous thing I ever drove. I sure did learn a lot about suspension systems, or maybe I learned a lot of ways they should not be built. A buddy of mine gave it too much gas and it flipped up on the rear tires then crashed into another friends truck. I ended up having to rebuild it again, which solved a lot of the original problems I had. I ended up selling it.
The project was a lot of work, but looking back it was the first project where I learned why a high rpm race engine was a terrible idea in a off road buggy despite gearing it very low. The same can be said for putting a tractor engine in a race car.
I believe the 300 engine will be a good all around engine for the type of riding I plan to do with this bike. Tonight I am picking up the 300 frame from my buddies shop and taking it home to start deciding where and how I will mod the z frame. The biggest problem I have that the Honda 300 guys don't run into is the dual throttle bodies. I can lower them slightly by rotating the offset rubber adapters 180degrees, but there is no way to turn them out of the frame like the grom guys do on their swaps. This requires me to remove the center frame tube and possible use the ninja upper frame. Even with that I still have the fuel pump on the bottom of the tank right in the way. I may have to use a remote fuel pump, and build a custom sending unit for a modified fuel tank. My head hurts just thinking about that. I also am going to have to lower the rear swing arm, and I am still not sure I have the space to fit the factory radiator mount in front. I may end up using the ninja rear suspension and pushing it aft an inch or two.
My biggest goal is to keep all the fairing attachments in the same spot, as well as maintain the same angle on the head tube and try not to change the suspension, but no matter what some is going to be changed, and depending on how low the engine sits it may have to be raised a few inches.
Has anyone else seen or heard of a Kawasaki swap being done?