HOW TO PORT AND FLOW TEST CYLINDER HEADS - D.VIZARD - SA268

HOW TO PORT AND FLOW TEST CYLINDER HEADS - D.VIZARD in PDF FORMAT (339 PAGES) . 

MORE FOR R-BOYS ! Porting heads is an art and science. It takes a craftsman's touch to shape the surfaces of the head for the optimal flow characteristics and the best performance. 

Porting demands the right tools, skills, and application of knowledge. All the aspects of porting stock as well as aftermarket heads in aluminum and cast-iron constructions are covered. You are also shown how to build a high-quality flow bench at home so you can test your work and obtain professional results.. 

The book covers blending the bowls, a basic porting procedure, and also covers pocket porting, porting the intake runners, and many advanced procedures. These advanced procedures include unshrouding valves, porting a shortside turn from the floor of the port down toward the valve seat, and developing the ideal port area and angle. All of these changes combine to produce optimal flow velocity through the engine for maximum power.