No Mine Shaft for 2025! - CLASS RACER FORUM

02-18-2025, 07:34 PM

#23

jmantle

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Join Date: Feb 2008

Location: Black Creek, BC Canada

Posts: 331

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Re: No Mine Shaft for 2025!

Quote:

Originally Posted by Rick J

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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Jim Mantle U/V/SA 6632

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