Adaptation of four-stroke motorcycle engine to continuously variable transmission for snowmobile application

Document Type

Conference Proceeding

Publication Date



Department of Mechanical Engineering-Engineering Mechanics; Department of Materials Science and Engineering


The successful implementation of a clean, quiet, highperformance four-stroke motorcycle engine into an existing snowmobile chassis has been achieved. The snowmobile is easy to start, easy to drive, and environmentally friendly. The following paper describes the conversion process in detail with actual dynamometer and field test data. The vehicle meets the proposed 2010 EPA snowmobile emissions regulations and is quieter than a stock snowmobile. The snowmobile not only addresses environmental concerns, it is economical as well, with an approximate cost of $5874.

Publisher's Statement

Copyright © 2003 SAE International and Copyright © 2003 Society of Automotive Engineers of Japan, Inc. Publisher’s version of record:

Publication Title

SAE Technical Papers