Valve Guide

Valve Guide

Diameter

Standard (no grooves): 12.0 mm
Oversize No. 1 (one groove): 12.1 mm
Oversize No. 2 (two grooves): 12.2 mm

Clearance (between valve and valve guide).

Max. clearance, new components:
Intake: 0.03-0.06 mm
Exhaust: 0.04-0.07 mm

Max. clearance, used components:
Intake: 0.15 mm
Exhaust: 0.15 mm

Clearance measured with valve approx. 2-3 mm clear of seat.