Thread: No Mine Shaft for 2025!
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Old 02-18-2025, 07:34 PM   #9
jmantle
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Location: Black Creek, BC Canada
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Default Re: No Mine Shaft for 2025!
Quote:
Originally Posted by Rick J View Post
What's the piston ding problem?
As you are not allowed to notch pistons for valve clearance, NHRA saw fit to make it illegal to allow your valves to do the job.
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