Marine Engine Collection of Mystic Seaport

Universal Motor Co. Atomic Four UJ

Engine Builder: Universal Motor Co., Oshkosh, WI
Model: Atomic Four UJ
Make: Universal Motor Co.
Inboard/Outboard: Inboard
Engine Type: Gasoline
Production Date:
Engine Design: Four Stroke
Overall Condition: Good
Rebuilt/Restored: Untouched
Horsepower: 20@2500 RPM
Cylinders: 4
Bore: 2-9/16"
Stoke: 3-1/8"

Remarks: Painted Red. Zenith carburetor. Removed from vessel Dr. Livingston The following Atomic Four engine information was taken from undated pamphlet "Suggestions Covering the Operation and Maintenance of Your Universal Marine Engine, Atomic Four Series",including Model UJ. Engine is of L-Head, 4 cylinder, 4 cycle configuration. Bore and stroke are 2-9/16" x 3-1/8", with total piston displacement of 64.46 cu. inches, and a compression ratio of 6.3 to 1. Model UJ Engine length overall is 27", and weight 310 lbs. HP at 2500 rpm is 20. Engine is equipped with a Zenith 68 Series carburetor and a Paragon reduction gear.


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