729566 5 16 3125 Valve Guide Hone

Kibblewhite Precision Machining offers this silicon carbide composite ball hone as a specialized tool for refining the internal bore of manganese bronze and cast iron valve guides. During Harley-Davidson top-end overhauls, this hone is used after the reaming process to remove surface irregularities and create a consistent finish. This preparation improves the contact area between the valve stem and the guide, significantly lowering the chance of galling during initial start-up and long-term operation. Note that this tool is not compatible with C630 bronze or Ampco-45 guides. It is an indispensable addition to any workshop focusing on precision valve train assembly and engine restoration.