scott.lambert
New member
Scott, having the valves "tight" also decreases the time that a closed valve spends on the valve seat. This reduces the transfer of heat from the valve to the head (more critical on the exhaust side), further increasing temperature.
yes, that makes sense, thank you. I had not thought of that.
So far no issues with the 1100 running .004 and .009 - quieter with less of a sag at a certain spot of the powerband.
Actual horsepower increase ? eh, not much I would say. Just a little more willing roll-on.
I have not been out in the middle of the panhandle area at 104 F with this adjustment yet...