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Jim B · 06-26-2011, 06:59 AM

I don't know your application but you may want to invest a couple of minutes and leak the engine before a trip back to the track. In a minimum valve clearance built engine running the cam 6º retarded from the checking centerline will reduce exhaust piston to valve clearance beyond the safety margin and the piston may wind up closing the valve. It may not apply to you but it's just a thought.

06-26-2011, 06:59 AM	#9
Jim B Member Join Date: Dec 2008 Posts: 100 Likes: 0 Liked 1 Time in 1 Post	Re: Intake Center Line I don't know your application but you may want to invest a couple of minutes and leak the engine before a trip back to the track. In a minimum valve clearance built engine running the cam 6º retarded from the checking centerline will reduce exhaust piston to valve clearance beyond the safety margin and the piston may wind up closing the valve. It may not apply to you but it's just a thought. Last edited by Jim B; 06-26-2011 at 07:09 AM.