Anybody here recognize them & can point me towards any informative articles with the specs, history and performance ratings?
Here are several pics of both engines. The first one is a 2-stroke that I located at a yard sale. Purely by accident I was able to locate & obtain another one of these that is a basket case at this time. The Bore & Stroke measure about 63.44mm X 40.15mm. These are not 100% accurate measurements as far as the stroke, but it's real close. The only markings I've been able to find. Is the writing on the flywheel, the casting number on the intake manifold and another number on the block next to a very small "Alcoa" logo. The basket engine looks to have an updated head on it due to it having cooling fins instead of being flat like the engine in the pic. Other than that... They look identical.






This second engine was removed from a 1993 Quarter Midget. Even though at casual glance it almost appears to be a 2-stroke also, it is a 4-stroke. I was told that the gear reduction unit on the out-put is geared at a 6:1 ratio. I'm not sure how I will work around this extra feature. I plan to use these engines to power a couple of classic Minibikes instead of the more traditional Briggs or Tecumseh power-plants usually found on a mini.






Thank you.