The Ford Barn - View Single Post

rotorwrench · 05-03-2022, 08:42 AM

Usually the clearance decreases as the valve seats wear since they wear down and not up. With that much extra clearance, I'd be wondering if they were set up too loose at last overhaul. Exhaust are generally set with a bit more clearance than intakes for that reason but .010" more clearance is not natural unless the cam or followers are wearing a lot more than usual.

05-03-2022, 08:42 AM	#17
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 17,410	Re: Valves Usually the clearance decreases as the valve seats wear since they wear down and not up. With that much extra clearance, I'd be wondering if they were set up too loose at last overhaul. Exhaust are generally set with a bit more clearance than intakes for that reason but .010" more clearance is not natural unless the cam or followers are wearing a lot more than usual.