Engines

A.J.'s Photos


Bronze flywheel for Triumph racing engine (See progress on this engine)


Workshop with Triumph and Ariel Square Four Engines being re-built


Rare 600 c.c. Square Four Push Rod Engine


Square Four Push Rod Engine


Square Four 600 c.c. Push Rod Engine and Case


1930 500 c.c. OHC Square Four Engine


Square Four Mark II Engine


750 c.c. Stroker Engine built by A. J. Lewis


Porting and Polishing

Porting and Polishing a BSA head


Cutaway picture of Square Four Engine - Below same engine from the article in the October 1951 issue of Cycle magazine.


Engines Part II - Triumph Racing Engine


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