Valve Guide

Valve Guide Inside Diameter 6.0 mm (0.236 inch)
Oversize Rework Dimensions Of Valve Guide Hole (Both Intake and Exhaust):
0.05 Oversize 11.05 - 11.07 mm (0.4350 - 0.4358 inch)
0.25 Oversize 11.25 - 11.27 mm (0.4429 - 0.4437 inch)
0.50 Oversize 11.50 - 11.52 mm (0.4528 - 0.4535 inch)