(See Franklin and Aircooled Motors)

The new headquarters for the manufacture of Franklin engines in Poland, located in the city of Grudziadz.

-Dedicated to general service of Franklin engines and others, propellers, etc. Certified by EASA.

-It produces currently two engine series from the previous line, the four-cylinder 4A-235 and the 6A-350.

“Franklin 4A-235”

“Franklin 6A-350”

-Reviewing the Franklin engines in the USA made by "Air-cooled Engines", we notice some constructive differences such as, for example, that in the first models both spark plugs went together at the top of the cylinders side by side.

“4AC-199 engine”

“The O-175, with parallel spark plugs”

-On the engines that are made in Poland, one spark plug is situated above the cylinder and the other one below it. Photos from EAHS taken at AFB Robins (USAF Air Base).