Please select your home edition
Edition
Sea Sure 2020 - LEADERBOARD

New Mercury Racing 360 APX Outboard debuts

by Lee Gordon 16 Sep 2020 05:44 PDT

The new Mercury Racing 360 APX competition outboard is a potent four-stroke V8 designed specifically to power Formula One tunnel boats on the UIM F1H2O World Championship. The 360 APX outboard is the first model in a new Mercury Racing Apex Series of outboards designed for closed-course competition, and will be available in late 2020 only to qualified racing teams.

"The 360 APX will usher in a new era of performance for this premier class of tunnel boat racing," said Stuart Halley, Mercury Racing general manager. "It combines a durable, low-emissions, four-stroke powerhead with amazing performance, and will require much less maintenance than the two-stroke outboard currently in use in the F1H2O World Championship."

The UIM F1H2O World Championship is the flagship international series of single-seater inshore circuit powerboat racing. The series attracts up to 20 of the world's leading drivers competing in tunnel-hull catamarans that hairpin turns at more than 90 mph and top 140 mph on the straights. In 2019 nine teams and 18 drivers from 12 countries competed in the six-race UIM F1H2O World Championship, with American pilot Shaun Torrente, racing for Team Abu Dhabi, winning the championship. The 2020 UIM F1H2O World Championship schedule has been postponed due to the Covid-19 pandemic.

"I am excited about the arrival of a new low-emissions competition outboard engine from Mercury Racing, focused at the top level of powerboat racing," said UIM President Dr. Raffaele Chiulli. "The engine, designed with input from the UIM and H2O Racing, significantly reduces exhaust emissions while at the same time providing the speed and excitement that powerboat racing fans expect from our flagship series in circuit racing. The UIM supports full implementation of this engine, which demonstrates our commitment to lowering carbon levels in our sport."

The 360 APX is based on a modified version of the Mercury Racing 300R 4.6-liter V8 powerhead. The engine is normally aspirated and retains its double overhead cam/four-valve architecture. The compression ratio is increased from 10:1 to 11:1 and peak rpm is boosted from 6400 RPM to 7000 RPM. The powerhead is fitted with a short-runner intake manifold mated to a cold-air induction system vented through the cowl. The engine calibration is modified to take full advantage of the powerhead modifications. The 360 APX uses a 24-volt starter for faster dock-side starting in competition. A digital control offers smooth and precise throttle application. Additionally, this engine offers 90% lower emissions than current two-stroke racing engines.

The 12-inch midsection is all-new and designed specifically for Formula 1 tunnel boat applications, with a structural wet sump driveshaft housing and integrated power trim and lift with remote pumps. An overdrive spur gearset between the crankshaft and the gearcase increases the input shaft speed to the gearcase to match that of the current 9600-RPM two-stroke race engine, and produces the left-hand propeller rotation desired for Formula 1 circuit racing. The overdrive gears are designed to accommodate multiple gear ratios, so the teams can select the ratio that best fits each particular race.

"The primary purpose of the overdrive is to increase the input speed to the gearcase," said Mercury Racing Director of Engineering Jeff Broman. "While the 360 APX produces about 45 percent more torque, it doesn't match the RPM of the 2.5-liter two-stroke. With the new 360 APX we can trade some torque to increase propeller RPM via the overdrive, which will also improve the life span of the gears."

An evolved version of the Mercury Racing Super Speed Master (IV SSM) outboard gearcase is direct-drive with no neutral or reverse shifting. Above-water exhaust offers unrestricted flow and produces an exciting tone for racing fans. The motor is equipped with integrated, light-weight steering arms for tunnel boat cable steering. The top cowl and driveshaft housing covers are lightweight carbon-fiber composite. The cowl features robust latching and sealing systems, while the driveshaft cover has quick-release fasteners to ease access to the midsection.

Mercury Racing 10W-30 MRX engine oil, a new high-performance full-synthetic lubricant, was engineered alongside the Mercury Racing 360 APX outboard and specifically formulated to withstand the extreme heat and stress the engine will encounter during F1 tunnel boat competition.

Mercury Racing 360 APX outboards are available for order now with shipments scheduled to commence in early November 2020.

Related Articles

Mercury Marine announces global leadership team
Multiple job moves and promotions effective immediately Mercury Marine has announced multiple job moves and promotions within its global leadership team with the objective of continuing to strengthen its leadership position in the marketplace and expanding the global experience of key talent. Posted on 6 Aug
Mercury introduces next generation DTS System
Digital Throttle & Shift with integrated, intuitive and intelligent technology Mercury MarineĀ®, a division of Brunswick Corporation (NYSE: BC), have introduced the next generation of its Digital Throttle & Shift (DTS) system with integrated, intuitive and intelligent technology that enhances the boating experience. Posted on 13 Feb
1st Mate System named CES 2021 Honoree
Winning two categories at CES 2021 Innovation Awards Mercury Marine, a division of Brunswick Corporation (NYSE: BC), have announced that its 1st Mate Marine Safety and Security System has been named a CESĀ® 2021 Innovation Awards Best of Innovation Honoree. Posted on 23 Dec 2020
Mercury Marine and Beneteau strengthen partnership
Beneteau customers will be able to take advantage of even more competitive outboard boat-and-engine. Mercury Marine has announced an expanded partnership with Beneteau on a global scale to leverage both companies' leadership position and offer Beneteau customers Mercury power on 2021 models. Posted on 24 Oct 2020
12/24 volt waterproof, wireless charger range
Unique charging technology is housed in a fully encapsulated and sealed unit The days of messing with phone charger cables (and trying to keep them dry) are over, with the release of the ROKK wireless system - the world's first range of certified waterproof, wireless phone chargers. Posted on 30 Sep 2020
Mercury Marine supply agreement with BRP
An incredible opportunity to further grow brand in the marketplace Mercury Marine has entered into a strategic supply agreement with BRP to be the supplier of choice for BRP owned boat brands Alumacraft, Manitou, Quintrex, Stacer, Savage and Yellowfin Plate Boats. Posted on 28 May 2020
Mercury Marine: Official Outboard Supplier of ETNZ
Mercury will provide outboard engines needed for Emirates Team New Zealand's chase and support boats Mercury Marine is proud to support Emirates Team New Zealand as the Official Outboard Supplier, as they prepare to defend the America's Cup in 2021. Posted on 4 Nov 2019
Mercury Marine expands diecast capabilities
Adding another 4,500-ton die-cast machine The addition will be filled with large tonnage die casting equipment containing cutting edge technologies that will drive higher quality and better throughput to keep up with increased engine demand especially with the V8 and V6 product lines. Posted on 6 Jun 2019
Mercury Marine breaks ground on a major expansion
Investing $17 million dollars in the propeller facility Mercury Marine, the world leader in marine propulsion and technology has officially broken ground on a new 30,000 square foot addition to its propeller casting facility. Posted on 5 May 2019
Mercury Marine wins prestigious Forum Design Award
Recognized with an International Forum Design (iF) award Mercury Marine, the world leader in marine propulsion and technology has been recognized with an International Forum Design (iF) award in the Discipline Product category, presented to the company for its V-6 outboard lineup. Posted on 19 Mar 2019
Cyclops 2020 - SmartlinkNano - FOOTER11th Hour Racing 2021 - OCT15 - FOOTERSea Sure 2021 - Blakes Toilets - FOOTER