Great Cylinder Head Porting Info:

I would like to share some great information I use when porting my cylinder heads. Some time ago I came across a great package of nine great cylinder head porters and have shared their knowledge on a 10 CD package. This is a must have for the serious enthusiast and more for the professional head porter.

The name of the product is AirFlow Experts and is available in here.

Racing Secrets - Click Here

Some of the subjects covered:

• What are your core beliefs on air flow?
  
• How do you get the most out of a head?


• How do you shape the all important short turn?


• How would you design a port from scratch?


• How do you calculate the following?




• Valve size needed


• Port size needed


• Window size needed


• Bowl size needed


• Seat ring ID needed


• Where are the biggest airflow restrictions?


• Differences in porting the intake port and exhaust port?


• Take us through the steps you take when porting a head.


• What are your favorite airflow formulas?


• How does porting a four valve head differ from a two valve?


• Air Flow Testing Tools:




• Flowbench - Best? Cheapest? Building your own?


• Diagnostic tools (flow balls, pressure probe, velocity probe, etc)


• Getting accurate results


• Duplicating your work (Templates, gauges, et)


• Modifications - Area Specific:




• Gasket - Area? Shape? Height?


• Pushrod - Area? Width?


• Roof - Width? Tip? Angle?


• Floor - Width? Tip? Shape?


• Walls - Shape?


• Window - Area? Shape?


• Short turn - Height? Width? Corners? Radius?


• Bowl - Width side to side? Width front to back? Depth? Shape?


• Guide - Shape? Height?


• Seat - Shape? Transition to bowl?


• Combustion chamber - Squish side? spark plug side? valve shrouding? Shape?


• Valves:




• Diameter - How do you decide?


• Face - Angle? (45', 55', etc) Width?


• Back cut - Angle(s)? Width?


• Shape? (Nail, Tulip, etc)


• Fixing flow problems:




• Poor low lift - What areas to focus?


• Poor mid lift - What areas to focus?


• Poor high lift - What areas to focus?


• CFM backs up at upper lifts - What areas to focus?


• Turbulent (noisy) - What areas to focus?


• Reverse flow - How to test? What to do?


• Swirl - What is it and how do we use it to improve power. You might be surprised by his answer


• Epoxy - When to use?


• Welding - When to use?


• How to get the most out of engine simulation software


• I hear Winston Cup teams are using Extrude Hone in a different way, what are they doing? This was a real eye opener.


• The biggest head porting mistakes you've seen?


• Current trends in porting?


• Biggest discoveries you’ve made working on cylinder heads?

Racing Secrets - Click Here