Operation CHARM: Car repair manuals for everyone.

Valve Guide

Oversize Rework Dimensions Of Valve Guide Hole
Both intake and exhaust
0.05 mm O.S. 12.050 - 120.68 Millimeter (mm)
0.25 mm O.S. 12.250 - 12.268 Millimeter (mm)
0.50 mm O.S. 12.500 - 12.518 Millimeter (mm)
Length Intake 45.5 Millimeter (mm)
Exhaust 50.5 Millimeter (mm)
Service Size 0.05, 0.25, 0.50 mm Oversize