What happens to old snowcross race sleds? Many of the new race-specific machines are set-up for short-course racing, along with requiring high-octane race fuel, so they canâ€™t survive for very long on pump premium. Nor do they meet all of the noise and certifiable criteria for use on the trails. What is one to do?
Fortunately, Ski-Doo provides their dealers with a detailed set of instructions to convert their race sleds to being trail capable. In the case of the latest 2006 MX Z x 440, the conversion consists of installing underhood foam, a modification to the tuned pipe, drive pulley modification, EGT sensor removal, carburetor modification, replacement of the combustion inserts to reduce the compression level, a modification to the tachometer, and removal of the pipe preheat switch. These modifications are considered mandatory for trail use of this particular vehicle, but at least it can be done. Properly.