The Popp is a 90 cubic inch 4-cylinder midget engine built in Texas. It features a scratch built sheetmetal block and head. The camshaft is shaft driven and features full pressure lubrication. Magneto, oil and water pumps are driven off the crank.

Block Manufacturer : Popp
Block Material : iron
Cylinders : 4
Block Year : Head Manufacturer : Unknown
Head Material : Iron
Cam : SOHC
Cam Drive : Shaft Driven
Carbs : Winfield “S”
Era : PostWar