How to Port & Flow Test Cylinder Heads (SA Design). S-A Design; Illustrated edition 15 Oct. 21.59 x 0.95 x 27.94 cm. 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. Few other engine builders have the same level of knowledge and skill porting engine heads as David Vizard. All the aspects of porting stock as well as aftermarket heads in aluminum and cast-iron constructions are covered. Vizard goes into great depth and detail on porting aftermarket heads. Starting with the basic techniques up to more advanced. In addition, you are also shown how to build a high-quality flow bench at home so you can test your work and obtain professional results. Vizard shows how to optimize flow paths through the heads, past the valves, and into the combustion chamber. 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 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. Terms & Conditions? Please be advised that we can only post to the address you enter at the checkout phase. Also, please note that orders can be processed within minutes, and if our courier picked up parcels, they could not be cancelled. However, you are welcome to return it once you receive the item. Please be aware that multiple orders can be posted individually. This is to ensure that you receive each item as soon as possible. Communication is crucial to us; please let us know immediately if at any time you have any issues or problems. Before leaving unsatisfactory feedback, please allow us to put things right. Please be informed that our stock is also held in Wholesale Fulfilment centres around the country; therefore, the order may come in the suppliers/fulfilment centre branded packaging. Our commitment with You. As professional sellers, we offer a 30 day guarantee to all our customers. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. Please message us for the labels, don’t use any other labels. We try over very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help and do our best to make you satisfied. We usually respond within 24 hours on weekdays.