Thread: Head tools
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they show a cross-section of a seat, with the different angles and seat widths, and the guide replacement procedure, but not how to grind the seat or what tools to use. the 45 part of the seat needs to be fitted to the valve face, so the face just overlaps the top edge of the 45. if the 45 is wider than the valve face, the seat is narrowed from the top with a 15 stone. then the width of the seat is adjusted by grinding or cutting a 60 angle from the bottom. this is just the bare basics in a perfect scenario. there is a lot more that experience will teach you. search the web for how to do a valve grind for some more info. not all of it will relate to a 911 head, but you will get the idea.
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Old 02-08-2005, 09:48 AM
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