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  1. #1
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    Exclamation New Mercury Racing 450R Delivers Unrelenting Outboard Performance

    Supercharged 4.6-Liter V8 Offers Unmatched Power Density and Technology
    FOND DU LAC, Wis. (June 18, 2019) – The new Mercury Racing 450R outboard is purpose designed for the high-performance disciple craving unrelenting power. Steeped in Mercury Racing DNA, the 450R features a 4.6-liter V8 FourStroke powerhead boosted by an exclusive Mercury Racing supercharger to produce 450 peak propshaft horsepower and 40 percent higher torque than the powerful 400R. At over 300 pounds lighter than the nearest competitor, the new 450R delivers industry leading power-to-weight in a compact, efficient package. The 450R writes a power prescription that combines unprecedented acceleration and top speed potential with rugged reliability and the latest technology from Mercury Racing. Multiple gearcase, control system, tie bar, and styling options are available to create the ultimate customized outboard performance package, ready to run Wide Open all day long. Best of all, the Mercury Racing 450R delivers all of its performance on readily available 89-octane (95 RON) pump fuel.

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    Supercharged Performance

    Designed and developed in-house and manufactured in Wisconsin on a dedicated Mercury Racing production line, the 450R is based on the same 4.6-liter V8 powerhead used for the normally aspirated Mercury Racing 300R outboard models. The proprietary 64-degree aluminum block is topped with aluminum cylinder heads with a Mercury Racing Quad Cam Four Valve (QC4) design and double overhead camshafts (DOHC). The valve train features a high-performance intake cam profile and race-spec Inconel exhaust valves. The camshafts are chain-driven and run in an oil bath so there is no timing belt to maintain.

    Mercury Racing applies its supercharging expertise to extract incredible power from the 4.6-liter V8. A 2.4-liter belt-driven twin-screw supercharger delivers pressure charging with zero lag for instant throttle response. The supercharger is water-cooled to reduce the temperature of the intake charge and increase power. Twin charge-air coolers engineered by Mercury Racing reduce the temperature of the compressed intake charge to further increase air density and power output. A custom designed intake attenuator is tuned to cancel the harshest high-frequency supercharger noise while retaining a throaty high-performance sound.

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    To maintain peak performance, a boost bypass valve automatically adjusts maximum boost pressure in response to changing ambient conditions. To better manage engine heat, the Mercury Racing 450R is fitted with a special high-capacity oil cooler and an exclusive poppet valve in the midsection to provide a higher volume of cooling-water flow on-demand. Electronics and other engine components are designed and positioned to create the tightest package possible while maintaining good service access. The carefully considered design and placement of the new supercharger and charge-air coolers allow the 450R to use the same slim-line cowl as the 300R model while incorporating higher flow intake vents. Like all Mercury Racing outboards, the 450R accommodates 26-inch center-to-center mounting on multi-engine transoms, perfect for maximizing transom space on brand new boats or re-power installations.

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    Mercury Racing engineers addressed every aspect of performance in designing the 450R outboard, and the weight and design of each component was scrutinized to achieve maximum power with minimal weight. The result is outstanding power density; 450 horsepower from an outboard that weighs as little as 689 pounds (313 Kg), the best power-to-weight ratio for outboards rated 400 horsepower and above.

    The wide-open throttle (WOT) operating range extends from 5800-6400 rpm, allowing for a full complement of Mercury Racing propellers to optimize acceleration, efficiency, and top speed.

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    Inspired Engineering
    The exclusive Mercury Racing Advanced MidSection (AMS) features heavy-duty stainless steel guide plates and stiffened engine mounts that stabilize the outboard and enhance high-speed handling. An optional rear tie-bar bracket integral to the AMS provides a strong, ultra-light mounting point and uncluttered installation for catamaran and other high-speed applications.

    The AMS also isolates the powerhead from the transom to insure run quality is smooth and quiet. Standard electro-hydraulic power steering offers confident and precise control at all speeds.

    The 450R also has high-performance charging capacity. The 115-amp alternator is a match for extreme audio systems and power-hungry electronics. When the Idle Charge battery-management system senses low battery voltage it automatically increases engine idle rpm to boost alternator output until batteries are charged to the proper level.

    Pop open the industry-exclusive Top Cowl Service Door for routine engine oil checks and top-offs without removing the cowl. An integrated latch and carry handle eases cowl removal for service.

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    Gearcase Options

    The surface-piercing Sport Master gearcase, designed for boats capable of speeds in excess of 85 mph, features low water pick-ups and a crescent leading-edge for maximized efficiency, and for the 450R application, a stout new one-piece 1.25-inch diameter stainless steel propshaft. From single-engine performance runabouts to multi-engine catamaran sport boats the Sport Master – in the correct application – will enhance boat handling, speed and efficiency. The available cambered skeg counteracts prop torque for improved performance and handling in single-engine applications. The 450R is also available with the 5.44 HD gearcase for lower-speed and traditional submerged applications. All 450R gearcases have a 1.60:1 gear ratio for enhanced acceleration and speed.

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    Mercury Racing Propellers

    Mercury Racing propellers are designed to maximize boat performance and handling in any application. Our artisans handcraft each propeller to precision-tuned works of art, customized for specific boat types and performance goals. Each individual propeller is then zero balanced and measured to ensure consistent performance every single time. On the new 450R models, the popular MAX5 and Outboard CNC Cleaver props are required for use with the surface piercing Sport Master gearcase. For 5.44 HP gearcase applications, Mercury Racing’s Bravo I FS, Bravo I LT, Enertia ECO XP, and Rev 4 XP are excellent options.

    Intelligent Technology

    Mercury Transient Spark Technology applies pre-programmed timing advance to optimize torque output for stronger hole-shot performance. Adaptive Speed Control with a custom Mercury Racing calibration automatically holds engine rpm regardless of load or condition changes – such as rough water, tight turns, tow sports and lower speeds on plane – to maintain boat momentum with less-frequent throttle control adjustment.

    The 450R is compatible with Mercury Racing Zero Effort Digital controls or any Mercury Marine digital control system, which can throttle up to six outboards with a single lever in some applications. Digital throttle and shift technology enhances the high-performance boating experience by providing smooth shifting and instant response while eliminating cable rigging and maintenance. Optional Joystick Piloting for Outboards (JPO) is available for boats rigged with two to six outboards and provides intuitive, fingertip 360-degree boat control for docking and maneuvering in tight quarters, plus the convenience of Skyhook® sea-holding features and integrated auto piloting.

    An available Mercury VesselView offers more systems information and engine data than with any other display system in the boating industry. VesselView can simultaneously monitor the RPM, speed, fuel flow and efficiency, temperature, trim and more on up to six outboards on an intuitive seven or nine-inch touchscreen display. VesselView also enables Advanced Sound Control, a dual muffler system that can be toggled between an ultra-quiet mode and a deep sport tone with a stirring growl on start-up.

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    Unmatched Reliability

    Designed to thrive in the abusive environment of high-performance boating, the 450R was tested, tested and tested again – in the lab and on the water – in a never-ending quest to exceed the highest expectations of the most-demanding customers. Run Wide Open with confidence. The Mercury Racing 450R outboard is backed by a three-year limited factory warranty and a three-year limited corrosion warranty. Extend that coverage for up to five additional years with a Mercury Product Protection factory-backed extended service plan.

    Color Options

    The Mercury Racing 450R is available in Cold Fusion white and the legendary Mercury Phantom Black. Cold Fusion White models are finished with Devil Red Eye cowl accent panels with a white Advanced MidSection (AMS) and gearcase. Black models are finished with Graphite Grey cowl accent panels and matching Graphite Grey AMS and gearcase. Devil Red Eye, Graphite Grey and Carbon Fiber accent panel kits are available to custom-match a 450R outboard to a boat color scheme.

    Production of the all-new 450R is underway and customer shipments have begun.


    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 Wide Open power boating experience on the water. Using leading-edge technology, Mercury Racing produces high-performance outboards, sterndrives, propellers, parts and accessories. Mercury Racing also produces high performance crate engines for the automotive aftermarket industry. Mercury Marine is a division of Brunswick Corp. (NYSE: BC), the world’s largest manufacturer of recreational products, including pleasure boats, marine engines, fitness equipment, billiard tables, accessories and game room furniture.




    Facebook | YouTube | Vintage Outboard Catalogs
    Photo prints available of your boat - click here


  2. #2
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    This was going great in my out of touch from reality world. All day i have been working out the plan in my head and it was going well. "sell my 2 300XS motors with the Latham steering for 25k. Rerig my boat to a 450R single motor. Have DTS smooth shifting along with power steering. Even was thinking who would be good to fill gauge holes in dash and go to the flat screen dash. My numbers were 35k for motor and 5k to 10k for rigging. Look below for the arrow the busted my bubble.


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  3. #3
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    If it's that expensive twin 300Rs seem like the way to go.

  4. Likes mjw930 liked this post
  5. #4
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    “Production of the all-new 450R is underway and customer shipments have begun.”

    yet 300R orders are 6 months out. I guess money does talk.
    Mark

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  7. #5
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    Welp.....yeah.... Hey whatever...

  8. #6
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    If you aren't an O.E.M., don't plan on seeing one until Feb. or so. I was just with the sales manager of Merc. Racing and confirmed it. There are several that are being shipped this week and several that are on the boats here in Nashville.

    Retail for a sport master wing plate motor will be just over 60k.

    The motors are all that we were told (civilized torque monsters). When Z06 man gets one on his twister it should break some hearts.

    Joe

  9. Likes JBS, TwzteD liked this post
  10. #7
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    Quote Originally Posted by JLanier571 View Post
    If it's that expensive twin 300Rs seem like the way to go.
    My boat was built with a single 300XS. 4,000 lb hull weight made it a 78 mph boat on its best day. 74 most days. I converted it to twins in 2014. Fixed the speed issue 109 best. 103 to 105 most days. The negative is low speed steering. The extra 520 lb motor plus 80 lbs of steering, another 50 lb jack plate. The front sponsons are out of the water at idle speed. When i turn right it seems instead of front steering right, the whole boat eases to the left from the prop pushing the rear and the front follows. A single 450 HP should push my boat to the low 90's. At my age i think i would be ok with that speed. Not sure how a 26k motor jumps to 54k from adding a supercharger. But i do not think i like my 2007 boat that much.


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  11. Likes NAVISPEED1, Robby321 liked this post
  12. #8
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    I think that will fit my 13' tunnel PERFECTLY! But I may have the same steering problem Davemvegas has haha.

    Interesting - It has a balance shaft in the center, like the old GM V6 vortec motors. That's odd, seems like extra weight to me.
    But for the price tag their asking, these motors should come in any color you want, custom painted. WOW is that expensive. Nearly the 7 marine pricetag. Just a few hundred ponies short lol.
    Last edited by home made tunnel; 06-19-2019 at 03:48 PM.

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  14. #9
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    Friend mine here had 27 Eliminator Speedster made last year, delivered with the 400R's. Getting 114 MPH out of it, but he will kick himself in the azz for NOT WAITING! Got money, so no problem.

    New new 450R is a simple beast! Saw all the stuff (vids) Instagram this morning...

  15. #10
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    Has anyone put the 15" 400ROS on a STV yet? Are they any louder than a 260?

  16. #11
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    The 400ROS is a unicorn. Plus, it still has the same weight as the standard length 400R. I guess the lower CG would help handling though.
    EVERY MAN HAS TWO LIVES...THE SECOND ONE BEGINS WHEN HE REALIZES THAT HE HAS JUST ONE

  17. #12
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    i want mine on a Tuff 24

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  19. #13
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    how good was Merc's investment in the Verado now that it has no market?
    Shortest run ever for a engine design from Merc?
    Or just a sign of the times, they will all get replaced after several years?

  20. #14
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    They’re still making the verado 350 and two versions of the 400, so we’re looking at 14 years and counting. Is that short?

  21. #15
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    Quote Originally Posted by engineermike View Post
    They’re still making the verado 350 and two versions of the 400, so we’re looking at 14 years and counting. Is that short?
    how do you sell Verado over a v8?

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