You may have seen Ian’s Kickboxer which boasts a race-ready Turbocharged 2.5L Subaru WRX engine. I so thought that was the sweetest looking ride. But now, now he’s wrapped awesome around Subaru’s Boxer turbo Diesel engine for the Kickboxer Diesel. The result, as you’ll see, is nothing but spasm-inducing beauty.
The Kickboxer Diesel is built around Subaru’s Boxer turbo Diesel engine. Designed to be a more compact, and cost efficient version of the original Kickboxer. The Kickboxer diesel’s features include: lightweight composite bodywork, under seat radiator, front mounted intercooler, LED lighting, and under engine turbocharger.
Ian forgot to mention one thing… It looks incredible. He also does all of his work in SolidWorks and uses Hypershot for the rendering. We asked him what changed to adapt the new diesel engine and creating the new design.
Aside from a few changes to the front subframe, and some tweaks to the engine mounts, there really wasn’t anything else I had to change. I did change a lot of other parts, to improve it from the original. You can find a great article on the development of Subaru’s diesel engine here: http://www.boxerdiesel.com/
I have always liked the idea of a diesel powered motorcycle. Not just for the power, but the great fuel economy. When I was working on the original Kickboxer I started learning about Subaru’s new diesel engine, and how light weight, and compact it was. I knew then I wanted to do a diesel version of the Kickboxer.
The first thing I did was model the engine. It was very challenging because detailed information about Subaru Diesel is very hard to come by. One of the complaints about the original Kickboxer was the bodywork wasn’t very modern. For the original bike I wanted the body to resemble a WWII fighter plane, but for the Diesel I didn’t give myself that restriction. I focused on making it edgier, with sharper lines and more gentle curves. I completely changed the front and rear swingarms to match the new bodywork. Headlights, taillights, and turn indicators are all LEDs, to minimize their appearance. Because the Diesel engine is 61.3 mm less in length than it’s gasoline counterpart, I was able to mount the intercooler in front of the engine. The original Kickboxer’s turbo was mounted above the engine, while the diesels turbo and muffler are mounted below the engine. This not only lowers the center of gravity, but also allowed the use of less complicated and lighter turbo plumbing, which in turn reduced weight. This change made it necessary to move the radiator from the front to below the seat.
When I built the original Kickboxer I realized that the swingarm front suspension would make It relatively easy to make the bike all wheel drive. At the time I decided to leave the idea for later. When I was building the Diesel I figured I would try and AWD version, just for fun. All told, it only required about thirty new parts. Power is transmitted to the front wheel by way of an intermediate chain from the transmission to a jackshaft, and then onto the front drive sprocket, which turns a drive axle that has a U-joint. The wheel was modified to have a very large offset. The wheel was also strengthened in order to handle the power. The front swingarm had to be changed to allow for the drive chain. The shock and linkage were changed for a pull type air shock, similar to the one used on the Bimota Tesi 3D. The steering system had to be modified to eliminate the bell cranks, and push/pull rods. It now steers with cables alone. Again this was just for fun. There are great challenges to making an awd motorcycle work in the real word, and I’ll leave that to the professionals.
Ready for a ride?
See more of Ian’s creations on his Flickr page.