What Is Porting?
D & A
Performance
Attica, Michigan
(810) 441-6516
NOW THAT YOU HAVE THE BASIC IDEA OF WHAT AN
ENGINE REALLY IS, YOU UNDERSTAND THAT
PORTING HELPS TO MAXIMIZE YOUR AIR FLOW
INTO YOUR ENGINE.  

BY RESHAPING AND CONTOURING YOUR CYLINDER
PORTS AND BOWLS, YOU GAIN AIRFLOW. THIS ALSO
WORKS FOR THE PORTS AND CHAMBERS OF YOUR
INTAKE MANIFOLD.
COME AND SEE THE PRO'S AT D & A PERFORMANCE!
WHAT IS PORTING?

WELL LET'S TAKE A LOOK AT THE BASICS OF YOUR
ENGINE.  WHETHER YOU HAVE A 2-STROKE OR A
4-STROKE, THE BOTTOM LINE IS THAT EITHER IS
JUST AN AIR PUMP, AND THE MORE AIR YOU CAN
GET INTO THE ENGINE AND THE MORE FUEL YOU
CAN GIVE IT, LEADS YOU TO ALL THE MORE
HORSEPOWER AND TORQUE!  
NOTE:  PORTING AND FLOW BENCH TESTING CAN
ONLY BE DONE PROPERLY WITH PRECISION
EQUIPMENT AND THE CORRECT TOOLS.  
THIS IS NOT FOR AMATEURS!
FOR ALL YOU DIYERS OUT THERE THAT THINK THEY
CAN PORT, ANYONE CAN PICK-UP A GRINDER AND
START HOGGING OUT A PORT ON A HEAD OR A
BOWL.  BUT UNTIL YOU HAVE PUT YOUR HEADS ON
A FLOW BENCH, HOW DO YOU KNOW THAT YOU
HELPED YOUR FLOW?  WELL YOU DON'T!  IF YOU
JUST START CUTTING ON YOUR HEADS AND DON'T
KNOW WHAT YOU ARE DOING, CHANCES ARE YOU
WILL DO MORE HARM THAN GOOD.  
HOW DEEP ARE YOUR POCKETS TO FIX THE
PROBLEM YOU JUST CREATED?

SAVE THE MONEY AND DO IT THE RIGHT WAY!