Lifters for higher spring pressure and moderate RPM
09-01-2010, 11:41 AM
#21
I think you were more right than he is in the way you were thinking. You are measuring area in 3 dimensions not just looking for the area of a flat circle. If you were trying to give the assumption of the cyl pressure on the face of the exhaust valve, then he would be right.
Valve stem = ~.314 ish. That is the diameter of it. Use your math accordingly then.
Valve stem = ~.314 ish. That is the diameter of it. Use your math accordingly then.
09-01-2010, 12:59 PM
#22
09-01-2010, 01:02 PM
#23
The bush is 3 dimensional. Do I need to say more? You have 2 dimensions in your math. Is the back of a valve flat? The face is somewhat, so that would be more correct for 2d math, but the back transitions 90* from parallel to perpendicular. That is the area at the back of the valve.
08-10-2012, 05:49 AM
#24
TECH Fanatic
The bush is 3 dimensional. Do I need to say more? You have 2 dimensions in your math. Is the back of a valve flat? The face is somewhat, so that would be more correct for 2d math, but the back transitions 90* from parallel to perpendicular. That is the area at the back of the valve.
