Note: There is an updated version of this video with bonus features and higher resolution editing available at: https://youtu.be/shTdm6cNzPM...This is my rebuild of the XR650R top engine, including sublet machining by L.A. Sleeve and use of a Stage 1 HotCams camshaft. If you like this kind of coverage, join us at "Motorcycle Tech and Travel". The channel features dirt, dual-sport and ADV riding routes, technology, in depth how-to, tools, gear, readiness for back country travel, safety tips, motorcycle reviews and the latest news. Subscribe and stay up to date at https://youtube.com/@MotorcycleTechandTravel.
This XR650R was preowned, and the project started with a cylinder leak down test that revealed valve and ring damage from poor air filtration. Most details apply to similar 4-stroke thumpers. This video is a step by step view of a Honda 4-stroke, overhead camshaft motorcycle engine build. With a factory workshop manual for your specific motorcycle and the right tools, you can perform work like this properly. Keep your motorcycle prepared for those "100 miles from nowhere" rides!