viza venom keyang ky171 engine replacement. Jul 9, 2017 10:38:51 GMT -5 via mobile Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by bill1968 on Jul 9, 2017 10:38:51 GMT -5 Im looking for a 2 stroke engine that will replace my old keyang ky171 engine. If anyone knows of one that will bolt up and work with the existing transmission i would appriciate the help.