Bee1971
Well-Known Member
Nice Link What Was Running In Sheboygan WI This Past Weekend And Last Year 2023
Hope they continue in 2025
P1 Class
The Excitement of Running a P1 Offshore Race Boat | Boating Mag
The 9.0-liter V-8 engine features Mercury Racing QC4 quad-valve cylinder heads and is boosted by twin turbochargers. Power output is 1,100 hp and 1,100 lb.-ft. of torque per engine on 93-octane pump gasoline. Each big V-8 turns 6,000 to 6,500 rpm. The transmission is the stout model designed for the Mercury Racing 1750 engine with a stronger input shaft and internal components.
“Before the switch to the Merc 1100, we were running engines making 1,850 to 2,000 hp at 7,500 rpm,” Curtis says, “and top speeds pushed 190 mph. Those engines needed a rebuild after each race.”
The point of a specified engine for the class is to reduce cost and ensure power parity among teams with unequal resources. With that in mind, the engines are tightly controlled. Teams are not allowed to make any adjustments or modifications to the engines. With the exception of the valve covers, the engines are sealed with special fasteners. At the beginning of each race weekend, the Mercury Racing support team delivers propulsion control modules (PCM) to each team. The PCM units are painted bright yellow so they are easy to identify. Mercury Racing also installs a data logger on each engine.
Hope they continue in 2025
P1 Class
The Excitement of Running a P1 Offshore Race Boat | Boating Mag
The 9.0-liter V-8 engine features Mercury Racing QC4 quad-valve cylinder heads and is boosted by twin turbochargers. Power output is 1,100 hp and 1,100 lb.-ft. of torque per engine on 93-octane pump gasoline. Each big V-8 turns 6,000 to 6,500 rpm. The transmission is the stout model designed for the Mercury Racing 1750 engine with a stronger input shaft and internal components.
“Before the switch to the Merc 1100, we were running engines making 1,850 to 2,000 hp at 7,500 rpm,” Curtis says, “and top speeds pushed 190 mph. Those engines needed a rebuild after each race.”
The point of a specified engine for the class is to reduce cost and ensure power parity among teams with unequal resources. With that in mind, the engines are tightly controlled. Teams are not allowed to make any adjustments or modifications to the engines. With the exception of the valve covers, the engines are sealed with special fasteners. At the beginning of each race weekend, the Mercury Racing support team delivers propulsion control modules (PCM) to each team. The PCM units are painted bright yellow so they are easy to identify. Mercury Racing also installs a data logger on each engine.
