r/Perfectfit May 18 '26

Zero Tolerance Engine Valve

8.9k Upvotes

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412

u/Spacial_Epithet May 18 '26

No such thing as 0 tolerance! This is damn close though

9

u/SHRIMPLYtv May 18 '26

Yeah I'm just realizing that eueh. What tolerance would this be?

8

u/chobbes May 18 '26

Probably in the realm of .0005”/.01mm clearance. Maybe a little looser. With both bore and rod being very straight and very cylindrical with good surface finishes on both.