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Pete · 01-28-2022, 07:56 PM

Knurling the OD of guides is a poor choice. It will cut the heat transfer by as much as 30% due to the reduced contact area.

01-28-2022, 07:56 PM	#7
Pete BANNED Join Date: May 2010 Location: Wa. Posts: 5,423	Re: New valve guides Knurling the OD of guides is a poor choice. It will cut the heat transfer by as much as 30% due to the reduced contact area.