From the first period of this American engine builder at least two water-cooled, 8-cylinder, V engines are known.

From appendix 9: This veteran brand of stationary, marine, and land vehicles is not commonly known for its aircraft engines, at least in proportion to those built in total. In the main text we mention a V8 without more data.

“Brennan ”

-However now we have an inline 4-cylinder from this factory and it has been found by chance on the web. The engine is air cooled.

“Small Brennan aero engine” (PiP)

-It is the Brennan Motor Manufacturing Co.

“The same Brennan engine from the other side” (PiP)

“Engine plate” (PiP)