Mercury Verado 225hp Serial 1B311855
Ranger Z20 25p tempest plus
Smartcraft version 3.00
I hope this makes sense....what is the correct trim position to use when reading water pressure to determine if I am safe to raise the motor? I did some running around today and narrowed in my " sweet spot" in regards to best top end speed vs trim height. Per Smartcraft and gps readings: Trim position on Smartcraft 4.5 water pressure 25psi, 6000 rpm 68.9mph two full tanks of gas, slight chop, 65degrees air temp, 900 feet elevation.
Here is my confusion... As I trim past my "sweet spot" to max trim allowed by Smartcraft / Verado computer my water pressure falls to 19psi and my rpms increase to 6100 but my top end speed falls due to over trimming. Is my basis for water pressure determined by water pressure at the sweet spot or the water pressure at max trim?