I have kept the motorcycle engine like the refrence and I have merged them to a concept by me. The sides of motorcycle are diffrent together.You can use turbosmooth for beter details.Next upgrate of this project is Increase details modeling.
OBJ (OBJ, filesize: 27 MB), MAX (Autodesk 3ds Max, filesize: 143 MB), FBX (Autodesk FBX, filesize: 30.3 MB)