[petrotech]

I have a 104 that has had charging problems for several years. It has a new V/R and the S/G tests OK. I am considering putting a 30 amp alternator on it and using the S/G as a starter only. I am concerned about getting enough RPM to let the alternator charge properly. The front pulley is a large enough diameter but the muffler is in the way of routing the belt on the opposite side of the motor from the S/G (the only place to mount the alternator). The rear pulley diameter is what concerns me. Has anyone had any experiance with this?