• Air flow is what ultimately limits an engines power.

• The more air you can flow, the more power you can make.

• Porting (and polishing) is the technique used to improve an engines air flow.

• Porting is done by carefully reshaping the intake and exhaust ports 

• Measuring the air flow while porting is crucial to ensuring favourable results.

• Blake Machine Company uses a SuperFlow Bench to verify all port work
  

Blake Machine Company ports and polishes all Datsun S30 
and S130 ZCar heads and offers three different levels of 
porting.

Check out typical Zcar porting flow data