Mercury’s QC4v 1750hp race sterndrive is off the scale

Producing an astounding 1750 horsepower, the QC4v 1750 Competition sterndrive is the most powerful engine ever produced by Mercury Racing.

The new 9.0lt V8 is described as a racer’s dream, with massive torque for unmatched acceleration and top-end speed.

Designed, developed and manufactured in house, the 9.0 litre engine features Mercury Racing’s exclusive aluminium four-valve cylinder heads and dual overhead camshaft (QC4v) valve train.

This proven valve train is said to greatly enhance engine performance and durability, producing an astounding 1750 horsepower at 6800rpm.

The proprietary V8 cylinder block is further packed with specialised hardware designed by Mercury Racing.

New turbochargers provide greater airflow for enhanced power and torque, which equates to serious acceleration for powering out of corners in highly competitive race situations.

The Digital Throttle & Shift (DTS) is said to provide car-like drivability, one-touch Smart Start and automatic throttle synchronisation. Zero Effort Digital controls add to the driving refinement.

COOLING MATERS
The 1750 is close-cooled for more uniform temperature distribution with an all-new race-proven heat exchanger.

Engine oil and glycol in the closed cooling system are routed around the engine via a series of tubes encapsulated in a casting filled with sea/river water, which serves as a coolant.

The heat exchanger provides for a higher seawater flow rate for enhanced cooling.  Mercury Racing’s proprietary pulse-separated exhaust tuning keeps turbos “spooled up,” virtually eliminating throttle lag and low-end torque deficit.

ADVANCED ELECTRONICS
Developed by Mercury Racing, the Propulsion Control Module (PCM) adjusts the amount of turbocharger boost needed to provide consistent horsepower and also enables individual cylinder control.

This ability to optimise fuel and spark timing independently for each cylinder enhances engine running quality, performance, fuel economy and durability. The use of eight independent ignition coils, one per cylinder, helps eliminate spark plug fouling.

The PCM also drives Mercury Racing’s exclusive Engine Guardian System, which monitors engine functions to forewarn of possible problems that could lead to engine damage.

This “smart” technology not only detects and alerts the boater of a problem; it also processes the data and reduces power to a maximum, safe level that allows the boater to continue operation with lower risk of engine damage.

TOUGH TRANSMISSION
The drive and hydraulic transmission are designed to handle the 1750’s high torque and power levels. At the same time, the transmission, designed specifically for DTS, delivers smooth and consistent shifts.  

The massive torque and power output of the new 1750 is transferred to the water via Mercury Racing’s Pro Finish 5 and 6-blade CNC sterndrive propellers.

The 1750 comes equipped with a 95A charging system to power for an array of marine electronics.

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