Mercury Racing elevates outboard engine power and technology with
the introduction of the Mercury Racing V8 500R model. This
supercharged 500hp V8 outboard was created for no-compromise owners
of the fastest luxury sport boats. The 500R introduces a host of
new components engineered to complement the raw power produced by
this engine and the challenging demands of extreme-performance
boating.
“Capable of delivering more than 500 horsepower in a wide range
of conditions, and weighing as little as 720 pounds, the 500R
establishes a new benchmark for outboard power density,” said
Stuart Halley, Mercury Racing general manager. “This motor offers
incredible mid-range punch and pulls with unrelenting authority all
the way to wide-open throttle. This is the most exciting production
outboard to ever emerge from the Mercury Racing shop.”
The 500R delivers more than 500 eager horsepower, 50 more
horsepower plus 10 percent higher torque than the 450R model. Its
4.6-liter 64-degree V8 FourStroke powerhead is boosted by an
exclusive Mercury Racing supercharger. The engine is designed to
perform on pump fuel with a minimum 89-octane (95 RON) rating.
To handle this new level of power and to satisfy the most
demanding performance boat owners, the 500R features upgraded
component designs in the powerhead, cooling system, midsection and
steering system. An all-new, 5.9" diameter gearcase, available in
R-Drive and R-Drive Sport configurations, efficiently transfers the
power to the water while delivering outstanding durability,
handling characteristics, and cooling. The 500R is available in
four lengths – 20", 25", 30" and 35" – to accommodate any single or
multi-engine performance application. The 26-inch center-to-center
mounting distance on multi-engine transoms enables seamless
installations on new boats and repower applications.
Stout PowerheadWhile the 500R model is based on
the same 4.6-liter V8 powerhead as the 450R model, the engine has
been upgraded with a number of new components intended to support
the scaled-up power output. A stout new crankshaft specific to the
500R model rides in 230-degree groove main bearings for improved
oiling and features larger, more robust 1-inch driveshaft splines.
Connecting rods, rod bearings and pistons are strengthened to
handle increased combustion pressure and a higher 6600 RPM redline.
A new low-inertia flywheel allows the engine RPM to climb faster
for improved acceleration.
Supercharger boost pressure is increased by 26 percent compared
to the 450R model. To accommodate increased airflow demand, the
500R features a new attenuator with a larger intake. Throttle body
diameter is increased by 15 percent from 80mm to 92mm, and the
shape of the supercharger inlet is redesigned to improve flow. The
charge air cooler fin density and flow pattern are optimized to
improve efficiency.
Humidity Compensation TechnologyTo promote
consistent performance in a broad range of atmospheric conditions,
the 500R outboard is equipped with a new sensor located in the
intake attenuator to measure the humidity level of the incoming
air. This allows the engine ECM to combine reported humidity with
air pressure and air temperature data to determine the ideal spark
timing for prevailing conditions. This is the first time humidity
compensation technology has been applied to a marine engine, making
it possible to maintain the most aggressive calibration to optimize
performance under virtually all conditions. Boaters will notice a
significant gain in power in challenging, very humid conditions –
up to 30 additional horsepower than would be available without
humidity compensation, and a 15-second reduction in 0-to-70 mph
acceleration in testing conducted by Mercury Racing using a
Tidewater 2700 boat powered by a single Mercury Racing 500R
outboard.
New Midsection: Advanced Racing Core The 500R
is the first Mercury Racing product to feature the exclusive
Advanced Racing Core (ARC), a new midsection that upgrades
durability and performance. A stronger, redesigned transom plate
can accommodate three inches of vertical adjustment via seven
transom mounting holes, twice the adjustment range available with
the six-hole 450R transom plate. An enhanced trim system features
two main hydraulic rams plus two new booster rams for
added trim authority under full load, and the speed of the trim
adjustment, like the 450R, is reduced to permit very fine
resolution for more-precise trim adjustment at high speeds.
Precision-fitted heavy-duty guide plates and stiffened engine
mounts are tuned to stabilize the engine for enhanced high-speed
handling.
The Mercury hydraulic power steering system has been upgraded to
deliver more steering authority, now producing 18 percent more
torque than the 450R power steering system. To support this added
steering torque, a newly designed steering arm, steering tube and
steering cylinder are 20 percent stronger, with an upgraded tube
material changed from aluminum to stainless steel. An
optional rear tie-bar bracket integral to the ARC provides a
strong, ultra-light mounting point for rock-solid precision
steering on catamaran and other ultra-high-speed applications.
Introducing R-DriveMercury Racing has designed
an all-new gearcase specifically for the 500R outboard. R-Drive is
available in two versions to accommodate a variety of applications,
and both versions feature a crescent leading edge and long aspect
torpedo hydrodynamically tuned for high speeds. The new 5.9-inch
gearcase can accommodate propellers up to 17 inches in diameter,
one inch larger than the 450R gearcase.
The R-Drive gearcase, both base and sport variants, have been
engineered with low water pick-ups, a torpedo shape designed to
thrive in submerged, transition (semi-surfacing), and full
surfacing applications, and a 1.60:1 gear ratio. A new
intermediate spray plate reduces drag in submerged and transition
applications. An application-based adjustable nose cap pick-up
system allows for optimizing cooling water flow for specific boat
applications. The nose cones are available in two basic shapes –
one for submerged and transition applications which have several
water inlet hole variations, and another that is shaped to run
fully surfaced on ultra-high-speed vessels. An all-new water
pump increases cooling capacity by 57 percent by ensuring optimal
water flow to the 500R. Both R-Drive versions benefit from larger,
more robust shafts. The driveshaft diameter is increased to 1 inch
from 7/8 inch and the propshaft diameter is increased to 1.5 inches
from 1.25 inches compared to the 450R model.
The base R-Drive is designed to perform well in
submerged and transition applications on boats capable of speeds
between 85 and 100 mph, beyond the speed range of the Mercury
Racing 5.44 HD gearcase. Many high-speed center console boats
fall into this category and will benefit from this design. The
R-Drive gearcase features a standard skeg length with a very
efficient parabolic cross-section shape and is offered with left-
or right-hand camber to balance steering force with standard and
counter rotation props.
The R-Drive Sport version is optimized for
ultra-high-speed surfacing applications, primarily high-performance
catamarans and center consoles capable of regularly reaching speeds
beyond 100 mph. It features a longer skeg than the base R-Drive
version, which allows it to maintain steering control while
operating fully surfaced at the high mounting positions desirable
for many of the fastest hulls. The R-Drive Sport skeg has a wedge
shape from leading edge to trailing edge and is available with no
camber or with a right-hand camber for single engine boats. The
R-Drive Sport variant is equipped with a propshaft made from an
ultra-high-strength aerospace stainless steel alloy similar to the
material used for the Mercury Racing M6 and M8 sterndrive
propshafts. This alloy was selected specifically to better endure
the vibratory stress caused with the loading and unloading of a
surfacing propeller.
Tech SolutionsThe 500R model features Mercury
Racing technology solutions designed to enhance the boating
experience, including the precision of Digital Throttle and Shift
(DTS) with available Mercury Racing Digital Zero Effort controls.
Adaptive Speed Control maintains engine RPM as load changes due to
sea conditions or turning maneuvers to maintain boat authority with
less control input. The 500R model supports all Mercury SmartCraft
technologies, including the Engine Guardian monitor system and
VesselView multi-function displays. The Top Cowl Service Door eases
routine maintenance by providing easy access to the oil dipstick
and fill without removing the cowl.
Color OptionsThree color options are offered
for the Mercury Racing 500R model: Phantom Black or Cold Fusion
White are finished with Mercury Racing graphics and Devil Eye Red
trim. For boaters planning a custom paint application, the 500R is
also available in “ready for paint” in Phantom Black with no
applied graphics or trim panel. Graphics and an application mask
are included for installation after custom painting.
The 500R is covered by a three-year limited factory warranty
with up to five additional years of Mercury Product Protection
extended factory warranty available. Learn more about Mercury
Racing high-performance products at mercuryracing.com.
For product information and images, please visit
mercuryracing.com/newsroom.
About Mercury Racing Based in Fond du Lac,
Wis., Mercury Racing, a division of Mercury Marine, is a leading
provider of high-performance marine propulsion systems for
discriminating boaters worldwide, offering an exciting and
fulfilling power boating experience on the water. Using
leading-edge technology, Mercury Racing produces high-performance
outboards, sterndrives, propellers, parts and accessories. Mercury
Marine is a division of Brunswick Corp. (NYSE: BC), the world’s
largest manufacturer of pleasure boats, marine engines, and
accessories.
Lee
Gordon —
Vice President – Corporate Communications, Public Relations & Public Affairs
M: (904) 860-8848 | O: (847) 735-4003
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