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What has folks used for valve guide reamers? Finally got all my valves out and want to ream them clean. They are rusty, but if not over spec I want to reuse them. Only 4000mi on the motor.

I found the right sized ‘valve guide reamer” with spiral flutes for $75 ea! Straight flute chuck reamers are like $20 ea. Do I really need the spiral flute reamer?

reaming changes he size. Rearming enlarges and knurling shrinks the hole. if just cleaning them they make wire brushes for that purpose.