Racing in the 450R class

[Jim Speros]

In case you haven't noticed the classes with the most boats are spec classes. The extreme do what you want classes have few boats and its usually a display of limping boats and the guy who doesn't break wins. Wonderful idea.

[CUDA]

Stock keeps racing tight, better for fans, simpler all the way around

To quote Zman

'As for ECU MERC needs to hand them out before the race"

In drag racing one guy was caught pumping water into a Cavity in the boat to make his spec weight for after race weigh In.

[Chaz]

Its amazing how willing people are to tear their boats up. We are going to see just how rugged the 450's are.

They are like the 300r motors that snapped off @ the mounts ....... only heavier

[CUDA]

https://community.brunswick.com/area...on/article/193
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300R Now Available with Advanced MidSection








MercuryRacingTeam Racing

Options




‎03-08-2022 08:45 AM

MERCURY RACING ADDS ADVANCED MIDSECTION TO POTENT 300R OUTBOARD
Standard with Power Steering and DTS with Available Integrated Rear Tie-Bar Bracket
It’s good to have options in life, and Mercury Racing just handed performance boat enthusiasts a new way to scratch the go-fast itch. The potent Mercury Racing 300R outboard is now available with the Mercury Racing Advanced MidSection (Racing AMS), a third midsection option that improves handling, simplifies rigging and adds additional setback to this high-performance outboard. The 300R outboard with the Racing AMS midsection will be available with a 5.44-inch HD or Sport Master gearcase, in Phantom Black or Cold Fusion White colors. All models with the Racing AMS feature standard Mercury Digital Throttle and Shift (DTS) control and standard Mercury electro-hydraulic power steering.
“With the addition of Racing AMS, more powerboat enthusiasts can experience maximum performance in the 300hp outboard class that is only available from the Mercury Racing 300R,” said Stuart Halley, Mercury Racing general manager. “This package should be especially appealing for use on high-performance, stepped-bottom center console boats, many of which have transoms already optimized for the for the added set-back of the AMS as offered on other Mercury Marine and Mercury Racing outboard products. It’s a better fit on many of these transoms and permits more tilt range within narrow motorwells. With the new 300R Racing AMS models, more performance enthusiasts may now experience the awesome punch of a Mercury Racing V8 outboard.”
The Mercury Racing AMS is designed expressly for high-performance Mercury Racing outboards, and is also featured on the Mercury Racing 450R model. The Racing AMS features heavy-duty guide plates and stiffened engine mounts to stabilize the engine for enhanced high-speed handling. An optional rear tie-bar bracket integral to the Racing AMS provides a strong, ultra-light mounting point for rock-solid, precision steering on catamaran and other ultra-high-speed applications. The Racing AMS also isolates the powerhead from the transom to ensure run quality is smooth and quiet at all speeds. Available Joystick Piloting for Outboards (JPO) for boats rigged with two to six outboards provides intuitive, fingertip 360-degree boat control for docking and maneuvering in tight quarters plus the convenience of Skyhook® position-holding features and integrated auto piloting.
Two gearcase options are available for the 300R outboard with the Racing AMS: the surface-piercing Sport Master for boats capable of speeds over 85 mph, and the 5.44-inch HD gearcase for use on bay boats and multi-engine performance stepped-bottom center consoles where the application requires a broader, more submerged gearcase to generate lift.
Designed, developed and manufactured in-house, the naturally aspirated Mercury Racing 300R is based on a 4.6L V-8 four-stroke powerhead, with four-valve cylinder heads and a double overhead camshaft valve train. To extract maximum performance, the Racing 300R is equipped with a Mercury Racing-designed short-runner intake, high-performance intake camshafts, an oil cooler and a performance-optimized ECU calibration that increases the WOT range to 6400 RPM. The Racing 300R is designed to make full power on 87-octane (R+M/2 or 90 RON) fuel, and is covered by a three-year limited warranty with the option to purchase up to five years of additional MPP (Mercury Product Protection) coverage.
The 64-degree V8 powerhead is covered by a slim-line cowl shaped to accommodate 26-inch center-to-center mounting on multi-engine transoms for seamless original-equipment and repower-ready installations. The industry-exclusive Top Cowl Service Door makes routine maintenance more efficient – just pop it open for regular engine oil checks and top-offs without removing the cowl. A 115 amp belt-driven alternator is designed to maintain peak charging performance in the most-demanding conditions. Exclusive Idle Charge battery management helps prevent battery drain on boats loaded with power-hungry electronics and audio systems by automatically increasing idle rpm to boost alternator output until batteries are recharged. Adaptive Speed Control (ASC) automatically maintains engine rpm as load or conditions change due to sea conditions, tight turns, tow sports or a lower planing speed, and boat momentum is maintained with less-frequent throttle-control adjustments. 
Advanced Range Optimization (ARO), a closed loop fuel-control system, utilizes electronic sensors to precisely adjust the fuel mixture for the best-possible efficiency at all speeds. An available Mercury VesselView display 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. VesselView rigged with a 300R with Racing AMS 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.
The Mercury Racing 300R outboard will continue to be offered with both the CMS and HD CMS alongside the new Racing AMS models. The CMS features solid lower mounts, stiffer upper mounts and an integral Tri-Ram trim system, and is available exclusively in a 20-inch shaft length with the Torque Master gearcase for tournament loaded bass boats, or the Sport Master gearcase for ultra-high speed bass or performance flats boats. The HD CMS features solid upper and lower mounts, heavy duty forged transom brackets, and a robust single-ram trim system with a remote mounted trim pump. In addition, rear tie-bar mounting plates and side steering brackets are available for high speed catamaran or vee bottom applications when using the Sport Master gearcase. Both the CMS and HD CMS available with DTS or mechanical controls and Mercury electro-hydraulic power steering.
The Mercury Racing 300R with the Racing AMS will be produced in limited quantities for 2022 Program Year, and orders may be placed immediately.
For complete details on all configurations of the Mercury Racing 300R, including gearcase and gear ratio options, colors, shaft lengths and rigging choices, go to MercuryRacing.com.

[JPEROG]

In case you haven't noticed the classes with the most boats are spec classes. The extreme do what you want classes have few boats and its usually a display of limping boats and the guy who doesn't break wins. Wonderful idea.

You might want to take a look at all of the changes that were allowed, (needed is a better term), on Super Stock boats. The midsections were anything but stock and this along with cowls will be the biggest failure with 450s as well. The AMS midsection was never designed for racing. They were designed for independent steering applications, reduced vibration, and additional setback. I have two new boats being built right now and we have made sever updates for the additional weight and set back that they will have bolted to them. Right now the motors are going to break, when they improve, the load will be going to the boat and you will see them breaking next. "Somethings got to give" until both are made strong enough to withstand the forces. I have had to make changes on all of my current 450 mids and can't imagine running them in a race without the upgrades that we have made.

Joe

[JPEROG]

Nice Spin Joe

Not sure where the spin came in? This thread is about the 450 race class and I was standing there when Rich told Troy and Michelle that they could go ahead and make the changes to match the MTI entrys. I would think that if it was out of the guidelines, MTI would have been told to change back to stock- Again, "racers with resources" win. A spec or stock class can't remain spec or stock until there are spec or stock parts that will live to be raced. If there was more demand, Mercury would design and build a "race motor", but when there is not, it has come from the private sector and aftermarket world--This can't be done with a "break and repeat process"-that is the definition of insanity.

I am also not knocking Randy, his knowledge, his achievements, or his success. He is a boat enthusiast that chased his passion, made it his career, sacrificed living in the U.S. for a portion of time to do it, then had the balls to start his own company upon his return. There is nobody who understands and relates to his customer as well as he does. Their success speaks for itself.

Joe

[JPEROG]

They are like the 300r motors that snapped off @ the mounts ....... only heavier

The 300R has three midsection options. CMS, HD CMS, and AMS. The 450 is only available in a AMS configuration. The HD CMS would most likely be a better race option but the consumer sales side doesn't have the demand for it.

Joe

[Chaz]

Spin Doctor,

Since I couldn't even get an answer for how much a first service cost's for a 450 porky ..
I'll take the last three or four answers as a ...

yes, they broke off at the mounts ..

[JPEROG]

Spin Doctor,

Since I couldn't even get an answer for how much a first service cost's for a 450 porky ..
I'll take the last three or four answers as a ...

yes, they broke off at the mounts ..

I change my oil every 25 hours or so and gear case oil every 10 hours on average. Not sure of the cost but its less then feeding oil into my X motors. How much is the service on your jet? (its of the same relevance because I will never own jet, and you have stated you will never own a new 4 stroke)...not sure why it would ever come up for discussion?

You know more then I do because I have never seen a 300R AMS midsection on any race boat. The 450s break bolts from the AMS mount movement and things go even further South from there with the cradle. This would be something that you could $olve and $ell a kit for if you had interest. The guys at PBC have made some changes on mine and they have held up well for the last 120 hours of easy LOTO use.

Joe

[Z06man]

1st service for a 450R is 100 hours oil and filter change Gear lube and 1 belt. Very close to my 1st service at 100 hours on my 280 2.5 Replating bores and rebuild power head . But i will say on the little boats they hold up a lot longer and nothing sounds as good.

[Chaz]

I change my oil every 25 hours or so and gear case oil every 10 hours on average. Not sure of the cost but its less then feeding oil into my X motors. How much is the service on your jet? (its of the same relevance because I will never own jet, and you have stated you will never own a new 4 stroke)...not sure why it would ever come up for discussion?

Actually, gator asked in the other thread. Then I asked .. twice more, then here once.
It was a simple question that required a dollar and cent .. err sense, answer.
I had dinner with our TAMS and his wife last night. If I really wanted to know, I would have asked him then.
But if you must know .. out of curiosity, it would have told me whether the rotor drive in the blower snout used its own sump or if it is lubricated / cooled with engine oil.
I think pre C-8 .. answered .. without knowing it ..

You know more then I do because I have never seen a 300R AMS midsection on any race boat. The 450s break bolts from the AMS mount movement and things go even further South from there with the cradle. This would be something that you could $olve and $ell a kit for if you had interest. The guys at PBC have made some changes on mine and they have held up well for the last 120 hours of easy LOTO use.

Joe

My best guy had a stroke about a year ago. I still go to Pop-Eyes and get a big bucket of chicken about once a month. Hurts to see him stuck in a wheel chair.
My next best, had C-5,6,7 fused in his neck like I did. He came back to work, within 10 minutes .. a grinder with a cut off wheel got away from him and I taped him up and ran him to the hospital .. for 17 stitch's in his thigh. He said .. I'm too old to do this any more. He's three years younger than me.
I've never had to go "look for work" .. it comes and finds me. With just me and at times, a neighborhood kid that thinks having a cell phone in his hand at all times is a job requirement. I cant keep up with what I have now ...
I don't follow it like you, but either last year or the year before, you made the bold statement that the porkchops would rule Key West. If you remember correct .. a 300xs was world champion yet again. And a porkey or two .. took time out of their busy day to go snorkeling over the beautiful Florida Keys reefs ...

Pre C-8 .. I've re-sleeved a 280 or three for Joe / Professor Scott, in the past. So yep, I'm aware of the cost ..

[Dave S]

Getting old and watchin the world change............

[noli]

.


it appears the disqualification was justified...I have nothing against the Maldonados, I think they're great racers. They actually talk to me at the races But if you watch the video, The red DW was in the 6th lane at the start of the race, but on turn-1, it seems the red DW is in lane #4, which is clearly a violation (I think)

Disclaimer: I am not a racer, I do not know the rules of racing

Please watch the video and tell us what you think ..





Start of Race , red DW is in lane #6

1st Buoy , at 1st turn, red DW is in lane #4

.

[GaryConn]

Looks like a violation to me.

[TooStroked]

Unless a lane is 3 feet wide, they clearly changed lanes.