Engine Tech The Next Generation Of Spec Racing Engines 003
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A look at the rod and piston combination reveals another clue to just how much thought Dorton put into his engine package. A 6-inch rod helps maintain a good rod/stroke ratio with a 3.625-inch stroke crank. The Mahle pistons are custom forgings with coatings throughout for good durability and use a 1.5 mm, 2 mm, 3 mm ring package. But notice the symmetrical valve pockets. Dorton says having the pistons made this way allows him to cut down on cost by reducing the piston inventory needed. View Related Article
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