The RAI-1 and RAI-6 were designed around the Lycoming IO-360 and IO-540 engines. Initial installations included 180 & 200 hp and 260 &300 hp versions. Since then builder’s have successfully used 160 & 210 hp in the RAI-1 and 350 hp in the RAI-6. Today, other manufacturers build copies, or clones if you choose, of the basic four and six cylinder engines.
The list includes:
Aero Sport Power www.aerosportpower.com
Continental Aerospace Technologies www.continentalmotors.aero/titan/experimental-kit-engines.aspx
Superior Air Parts www.superiorairparts.com
The February 2020 issue of KITPLANES magazine presents their annual engine review including these and many more manufacturers. It includes basic pricing ranging from as low as $26,775 for an IO-320 to $51,300 for an IO-540.
There is a lot to be said for buying a new engine. However, if you know a good guilder, you can get a better engine for less money with a rebuilt or overhauled engine. We can assist you if you are interested.
Depending on the source, your engine may or may not come with a starter. The alternator is normally your responsibility. Other accessories you will need are exhaust pipes, oil cooler, hoses, and engine monitor. You may choose tried and true magnetos or electronic ignition, carbureted or fuel injected. Electronic fuel injection is also available.
The KITPLANES article also discusses several alternative engine choices, including automotive conversions, diesel engines, and turbines. We have some experience with these. You may contact us if you are interested.