Goodson Black Diamond Hyper-Finish Valve Guide Sizing System - Engine Builder Magazine
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Goodson Black Diamond Hyper-Finish Valve Guide Sizing System

This Goodson Valve Guide Sizing System is more durable and accurate than its predecessor.

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Back in 2010, Goodson introduced the Hyper-Finish Diamond Valve Guide Sizing System to the world market. Toward the end of 2020, they released the New, Improved Hyper-Finish Valve Guide Sizing System, now known as the Black Diamond Hyper-Finish Valve Guide Honing System. 

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The tool works essentially the same, but it is now made using CNC manufacturing techniques, the Black Diamond Hyper-Finish is more durable and accurate than it’s predecessor. As before, the drive head (HF-100) fits every size mandrel assembly and features a Quick-Change set-up. The diamond abrasive produces a 25 Ra finish in soft guides and an 8 to 10 Ra finish in hardened guides. 

The Complete Kit includes:

  • Drive Head (HF-100)
  • 7.00mm Mandrel Assembly (BHFM-271C)
  • .312″ Mandrel Assembly (BHFM-307C)
  • .343″ Mandrel Assembly (BHFM-344C)
  • .375″ Mandrel Assembly (BHFM-350C)
  • 7.0mm x 1-1/4″ Nylon Bristle Valve Guide Brush (GVP-11N)
  • 5/16″ x 2-1/2″ Nylon Bristle Valve Guide Brush (GVP-1N)
  • 11/32″ x 2-1/2″ Nylon Bristle Valve Guide Brush (GVP-2N)
  • 3/8″ x 2-1/2″ Nylon Bristle Valve Guide Brush (GVP-3N)
  • 8 ounce bottle Diamond Honing Oil (DHO-8)

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