This entire blog is in Japanese but Ive been copying and pasting to translate. This guy posts in great detail with lots of pictures so I wanted to share with you guys. I confirmed a couple things, he did press out the stock cb1100 stem and welded in the cb750 to make the swap happen, he also cut the horn portion of the unicorn mount and welded it to the stock cb1100 top triple to mount the K0 gauges. The bike is wearing the super build maximum titanium 4-4 exhaust and super build maximum swing arm. The tank is the titanium cb750 replica repainted. This might be the best graph Ive seen being able to graph honda with honda and stay modern as hell....the cb1100 is lucky enough to have a custom kit floating out there from a company called whitehouse so the cb1100 front end already has a kit to make it look like the 70s CB...it just all works.
http://moriyasubuildandengineeringpart2.blog.jp/archives/cat_227622.htmlall the way at the bottom you'll see a small arrow, thats the next button.
the first page is basically him saying how a customer called the shop who rides a z1 and asked him to build him an insane honda, and then he documents it. towards the bottom you'll see the orange k0 they choose for donor.
cb750 K0 donor
white house front fender, fork ears, maybe boots?
cb1100EX front end, triple, forks, front wheel
cb100EX rear wheel
Yoshimura MIKUNI TMR-MJN32 carburetor
super build maximum swing arm, titanium 4-4 exhaust, and fuel tank
wiesco piston kit/rebuild kit
Öhlins twin shocks
This build took 1.5 years to complete due to the pandemic, they sourced the K0, then the two builders went back and forth about wheel choice, the customer assumed the NSR250 wheels used on the goo bike were going to be on his bike. The builder mentioned many times going the easy route isnt really his cup of tea, advised away from the easiest route, which was slapping on some mag wheels, other front ends and wheels were suggested like cb400f, the builder continued to decline swaps that included parts from smaller cc platforms, the builder also really felt strongly about not mixing manufactures...he wanted to use modern honda with this K0 for what he thought would be the best results.
The rear hub took major modifications, I wasn't able to translate all of it but what i saw was that they eliminated the passenger peg because it needed a wider rim/tire set up, or something? they didn't include the exact measurements or specs on material taken off the hub...they may have used an offset sprocket as well because they were talking about measuring, taking material away, installing again and measuring, basically describing painstaking repetition to get it right...something along those lines. After some progress the customer suggests a used 900cc kit online, then the builders advised against going so large having thin barrels, longevity would essentially be non existent, and using a used kit isn't the best use of money for a build such as this....the customer didnt like that very much, some time goes on and the customer sends a link for a brand new 900cc kit, somehow they convince him to go for the wiesco kit and thats what they used.
The frame was reinforced at the front and rear of the cradle, and at the bottom and top left of the triangles. The tank fork ears and side covers were sent off to paint, and the bike was slapped together. The Öhlins shocks took the longest to show up which was almost the entire 1.5 years, the pistons took about 9 months to show up and during that time he had to defend against the customers onslaught advising him to just use the 900cc kit because it was available and not subject to the pandemic. The aluminum rims were chromed, i think the engine covers were chromed, running dunlop sportmax, 18" front and rear.
