Cylinder Head Specifications:
Combustion chamber volume: 75cc / 84cc / 88cc
Intake runner volume: 210cc
Exhaust runner volume: 70cc
Intake valve diameter: 2.140"
Exhaust valve diameter: 1.81"
Valve stem diameter: 11/32"
Valve guides: Manganese bronze
Deck thickness: 5/8"
Valve spring diameter: 1.55"
Valve spring maximum lift: .600"
Rocker stud: N/A
Guideplate: N/A
Pushrod diameter: 3/8"
Valve angle: 15°
Exhaust port location: Stock
Spark plug fitment: 14mm x 3/4 reach, gasket seat |