Racing Kit
2-2
Modifying the Cylinder Head Ports
Intake port
• Grind the intake port so that there isno height difference between the insulator and intake port.
• Lightly polish the other surfaces using an emery cloth.
Exhaust port
• Grind the exhaust port so that there is no height difference between the collar and exhaust port.
• Lightly polish the other surfaces using an emery cloth.
Exhaust port collar
Intake port
Exhaust port
Insulator
Make sure the smooth
connection
Make sure the smooth
connection
Make sure the smooth
connection
