Hardened Valve Seats in Old Tractor Heads: A JD 630 Guide
This guide helps John Deere 630 owners decide whether to install hardened valve seats during an engine rebuild. It's a crucial decision impacting engine longevity and performance. We'll examine the factors influencing this choice, offering a step-by-step inspection process and a clear evaluation framework. For parts for other tractors, check out this helpful resource. Assessing Your Tractor's Workload: Weekend Warrior or Workhorse? Before diving into valve seats, consider your John Deere 630's typical workload....