Engine - Chung Yang R460 4.2hp racing motor $255

[darwin]

http://www.adaracing.com/scooter/engine-cy46/11-202700 bet you could out run the cops with one of these.

 

[Richard H.]

Do a search from 3 to 4 years ago and you'll find a number of members, most of whom have moved on, who wrote about using this engine. They are zippy, temperamental and headache inducing loud.