SEABUDDY
ON BOATS

Archive for the ‘Motors and Power’ Category

1,350 Hp Merc Racing engine photo

Mercury Marine offers through its Merc Racing division a 1,350 Hp engine with a one year warranty for recreational boating. This engine uses four cams (or quad cams) with four valves in an engine that is turbocharged (turbo-compressor induction in Mercury Marine speak) with a 6,500 rpm redline to get this top power from the 9 liter engine displacement (552 cu. in.).

This 1,720 lb. engine requires a Merc Racing’s dry-sump M8 stern drive which uses a integral Merc Racing dry-sump Hydraulic transmission. Expensive stuff, these M8 out drive pieces, but they are built to take the torque of this engine.

M8 Merc Racing outdrive

Additional Hp above the 1,350 Hp quoted is available with a proper engine room design by the boat builder that allows for lower engine intake air temperatures. Some say it can go up to shh! Hp with the right spirit of coordination between Merc Racing and your high performance boat builder. But, that is still a secret number for now.

Use 91 octane fuel only in this engine and select your out drive reduction ratios with the boat, load, and use in mind.

Now, if you want to use 89 octane gas and use a cheaper/lighter stern drive (the dry-sump NX1 SSM), get Merc Racing’s sister offering, a 1,100 Hp. engine, although some reduction grear ratios cause even this engine to be matched to the M8 stern drive and transmission, for good durability to handle the torque multiplier in a performance boat . This engine has the same compression ratio, same bore and stroke, and the same four cam design.

This one is a torque monster developing 1,100 lb-ft as low as 2,500 rpm. It does a single throttle body rather than the two that comes with the 1,350. The warranty stays the same at one year for recreational boating.

Mercury Marine offers through its Merc Racing division a 1,350 Hp engine with a one year warranty for recreational boating. This engine uses four cams (or quad cams) with four valves in an engine that is turbocharged (turbo-compressor induction in Mercury Marine speak) with a 6,500 rpm redline to get this top power from the 9 liter engine displacement (552 cu. in.).

This 1,720 lb. engine requires a Merc Racing’s dry-sump M8 stern drive which uses a integral Merc Racing dry-sump Hydraulic transmission. Expensive stuff, these M8 out drive pieces, but they are built to take the torque of this engine.

Additional Hp above the 1,350 Hp quoted is available with a proper engine room design by the boat builder that allows for lower engine intake air temperatures. Some say it can go up to shh! Hp with the right spirit of coordination between Merc Racing and your high performance boat builder. But, that is still a secret number for now.

Use 91 octane fuel only in this engine and select your out drive reduction ratios with the boat, load, and use in mind.

Now, if you want to use 89 octane gas and use a cheaper/lighter stern drive (the dry-sump NX1 SSM), get Merc Racing’s sister offering, a 1,100 Hp. engine, although some reduction grear ratios cause even this engine to be matched to the M8 stern drive and transmission, for good durability to handle the torque multiplier in a performance boat . This engine has the same compression ratio, same bore and stroke, and the same four cam design.

Merc Racing NXT1 SSM stern drive

This 1,100 Hp one is a torque monster developing 1,100 lb-ft as low as 2,500 rpm. It does a single throttle body rather than the two that comes with the 1,350. The warranty stays the same at one year for recreational boating.

Merc Racing 1,100 Hp engine

Boat Show Grady White boat / Yamaha outboard

Grady White invented the walk around cuddy cabin family fishing boat and they teamed up with Yamaha outboards to make this class leader. Note the recess walk way in the deck all the way around the bow and cabin house. That makes this 232 Grady White a Walk Around model boat within the boating industry. Yamaha is a leading boating industry manufacturer of 4 stroke outboard motors. The match up makes a very good marriage.

A boat and motor combination is all about performance on the water. A 300 Hp single  Yamaha outboard on the 232 Grady White power boat gives a best cruising speed between 4,000 rpms (about 24 mph according to the test) and 4,500 rpms (about 31 mph in the test). It is the right outboard match for the boat with these kind of numbers. The top speed at just under 44 mph at 5,900 rpms is far secondary to the best economy (at reasonable engine rpms) cruising speeds.

The boat by its self is 4,500 – 4,600 lbs. With the engine, some fuel, people, and gear the test weight was 6,711 lbs. On a trailer, figure on a tow package weight of 9,000 lbs. or so.

The hull length is 23’ 5” with a beam (that needs a simple wide load road permit) is 9’ 3”. The standard fuel tank capacity is 150 gal.

Grady White has won awards after awards for their good boats and I would be remiss if I did not mention this here.

While at the show, allow time to try your hand at the free power boat docking game where you maneuver a model boat in a test tank using a full scale boat helm into a marina slip. It’s a timed test, with offsets for bumping, that is a challenge for beginner and even if you believe yourself a pro boater.

232 grady white layout at boat show

wood yacht sportfisherman with Volvo IPS

Take four fisherman plus two to four crew at and back some 250 miles offshore in a wood boat in comfort using a custom boat powered by Volvo IPS to get this performance.

The room created by the IPS system allows for two double berths under the salon deck for the crew while two luxurious staterooms accommodate the owner’s party with two large heads. So it’s a three stateroom / two head boat.

She is all about good fuel economy, offshore high performance, quick maneuverability, ease of handling, and big fish fighting ability. “Spencer Yachts has taken the Carolina style and tradition of boat building with a unique look and transformed it into a World Class and high performance Sport Fishing Yacht”

 She has South Carolina flair, outstanding styling, and the world class fit and finish of the highest class custom boat.

 This sportfisher is 57’ long with a beam of 16’ 10”. Her engines are Twin 1200 model 900 Hp Volvo Diesel D 13s. Fuel capacity is 1450 gal. Her draft is 4’ 5”. She weighs 26 tons. It has been said that it’s the most maneuverable boat of its size on the market. It certainly has  outstanding looks.

Spencer yachts are in Wanchese, NC at 252-473-6567, with their hull boat building plant at Manns Harbor.

One final quote…. “Amazing is the only word for (the boat’s) handling, maneuverability, spinning and backing down on a blue marlin.”

wood boat layout photo by Spencer Yachts

wood composite yacht image with Volvo IPS

wood power boat 1959 Lyman 16.5 foot outboard model

This power boat is shown being restored in Maine. The photo is from Androscoggin Wooden Boat Works (207) 685-9805. It shows the nice work that they do, particularly on Lyman Boats. This classic outboard runabout is said to be a boat for sale and at a very attractive price. Give them a telephone call if this is something that you need for this upcoming summer boating adventure season.

This outboard Lyman boat seems to have been updated with a painted finish rather than a varnished, but not stained, boat hull interior. The seats, deck and other parts show, to me, the correct, as built, finishes. Lyman mahogany filler stain with varnish over that would be the proper choice. Lyman was also known for its use of ribbon striped (sometimes called tiger striped) mahogany veneered marine-grade plywood in its decks. Check for that feature on this boat. Most restorers use a different style of mahogany plywood if they replace the deck on a Lyman runabout.

The 16.5 foot boat was a popular boat model and it was in production from 1957-1960. In 1959 they made 366 of these. It is a 16’ 7” long runabout with a beam of 70”. It weighs 560 lbs. and could take up to a 60 Hp outboard. That is Hp that is rated at the power head, not rated at the prop shaft as outboards are rated today. Use an older motor or drop back to a maximum rating of about 54 Hp. She goes real well with a 35 Hp, by the way.

Lymans are clinker built or a lapstrake construction style of planking. Each plank edge overlaps the other and are clinched nailed to the ribs and screwed to the frames such that an edge is shown at each plank its full length along the hull side that helps soften the ride, and they are flexible boats that can twist over the waves somewhat to give a better ride than a classic boat person would expect. Ride a Lyman to experience this for yourself. I know of several prior owners of carvel, hard chine classic wood boats that marvel at the ride that they get in their Lyman compared to what they are used to.

By the way, get a Lyman model a little older than this model year and you will see a dimpled finish in the planking on the outside of the hull. Lyman used a duck billed clinch nail for better holding strength and sometime (in the mid-50s?) began to completely fair over both the screws and the duck billed nails for a smooth exterior finish.

getting ready to be the queen of the boat show

The oldest (since 1905) boat show has traditionally had a “Queen of the Boat Show” cabin cruiser power boat.  This year it’s the 54’ 9” Sea Ray Sundancer express cruiser.

Sundancer is a name that Sea Ray applies to their boat models that have an extra bed under the mid-section of an otherwise express style cabin cruiser. The first boat that came with the name “sundancer” was a 24’ 4” SRV 240 Sea Ray in 1975. That boat had a trailerable beam, not the 15’ 3” beam of this year’s Queen.

If they did not invent the mid-cabin boat design (some say that Skipjack boats is also in contention for that recognition), Sea Ray boats certainly has made it a runaway success story among boaters and also within the boating industry.

C. N. “Connie” Ray started building outboard powered 16’ runabouts in 1959 in Oxford, MI, which is north of Detroit. The 2012 queen of the boat show uses twin Mercury Marine Mercruiser Zeus drives.

Today’s boat has up to 1,430 Hp using diesel fuel, not the 25-35 Hp using gasoline as a fuel that the 1959 runabout was powered with. The Sea Ray Queen’s engines are made by Cummins.

The master stateroom is the one that is amidships and not at the bow. It has a TV as big as the main salon, not the smaller one that the forward bow stateroom has. Both staterooms have a “dry” head; that is a bathroom with a separate shower stall so that the entire bathroom does not get sprayed down when the shower is turned on.

By the way, the generous luxury space of the master bedroom can be ordered configured as two small staterooms so this cabin cruiser has three private staterooms if that is what your family needs. In that layout, the Master Stateroom would then be the forward bow stateroom by default.

Note my boat photo of the thru-bolted bollard style cleat that Sea Ray uses as standard equipment on this yacht. It is one of eight onboard, and they are very impressive!

bollard style cleat on Sea Ray boat show queen

Queen of the Boat Show underway

Visit the Javits Convention Center on 11^th avenue in New York City during the boat show to see Mercruiser’s 8.2 engines that come in 380 Hp, 430 Hp H O, 525 Hp EFI, and 700 Hp SCi variations, among the other engines on display, although not all engines are guaranteed to be at the boat show, in their booth (C-18) and installed in boats on the boat show N Y convention center exhibit floor.

These engines are based on at least two chevy engine blocks with various heads to develop their reliable marine horse power at these levels. The 380 Hp is the one that is popular in a cabin cruiser and bigger family bow riders. Its full throttle rpm range is 4,400 – 4,800 rpm and has a cam and valve train that works best for those kind of rpms. The peak power has been dyno’d at 4,200 rpm before it starts to fall off and the 430 Hp H O verison exchanges some low end power compared to the 380 Hp for more clearly power over 4,000 rpm that then peaks at 4,700 – 4,800 rpm. The full throttle rpm range for the 430 Hp H O is put at 4,600 – 5,200 rpm. A 380 Hp engine will best a 430 Hp power boat up to about 4,000 rpm, where the 430 Hp then really pulls ahead.

Seabuddy has done a sea trial with each of these engines, and in a 7,000 lb type boat it proved hard to tell the difference between them in a pleasure boat application.

2012 Mercruiser 380 Hp 8.2 powerboat engine

Mercury Marine uses its Merc Racing division to sell the 525 Hp EFI bumps up the power and the full throttle rpm to 4,800 – 5,200 rpm. They add even more changes to the engine parts like a different fuel injection system AND a 3.3 liter supercharger to get a rating of 700 Hp at the same full throttle rpm range of 4,800 – 5,200 rpms.

All of these 502 cu. in. (8.2 litre) engines have a bore of 4.47 inches with a 4 inch stroke.

2012 Mercruiser 430 HO 8.2 engine

2012 Mercury Racing 525 Hp EFI engine

2012 Mercury Racing SCi 700 Hp engine

2012 Sea Ray 300 SLX

Sea Ray makes a bow rider that is 32’ 2” in length with its extended swim platform or 29’ 6” with the standard swim step platform. It is a 9’ 8” beam boat that can still be trailered but only with a fairly simple to get permit. The single engine boat typically weighs in at 7,700 without trailer, or anything in the holding tank, water tank, or fuel tank or boat and crew supplies on board. Figure on a ready tow down to the highway weight of around 10,500 to more likely, 11,000 lbs. It takes a good size tow car or truck to tow it. But, what a beautiful runabout!

The single engine choice is a big block 380 Hp 8.2 Mag ECT gas engine with a standard grade Bravo III out drive. The 430 H. O. 8.2 engine or the 525 Hp engine version of the 8.2 is not offered and the 700 SCi (another version of the 8.2 block with a supercharger included as standard) may not fit. These higher Hp engine power choices would require an upgraded stern drive from Mercruiser. Only an inboard outboard drive system is available with the Sea Ray 300 SLX boat model.

The twin engine choices are several. They are small blocks from chevy marinised by Mercruiser in either a 5.0 block size or a 5.7 block. The 5.0 is rated at 260 Hp and the 5.7 makes 300 Hp. That is 300 Hp for each engine for a total of 600 Hp in an about a high mid-twenties length hull.

What further separates these twin engine choices is the separate option of Axius and Axius Premier joy stick control systems. With this, just a single finger joy stick controls the direction and speed of the Sea Ray 300 SLX at lower speeds.

See this Sea Ray boat at the New York Boat Show.

2012 Sea Ray Bow Rider

Sea Ray bow rider Helm Station

This one is a 1954 Chris craft. An ideal mahogany classic two cockpit runabout. With a big flathead Chris Craft she gives a great ride at normal antique and classic boat speeds and a real thrill when the throttle is opened up even more.

Specs on the boat is 18’ 11” in length and she has a beam of 6’ 1”. Her overall weight runs in the 2,100 to 2,400 lbs. area. Chris Craft built 503 of them in a production series from 1948 to 1954.

She is not a bow rider and one must change which cockpit to sit in at dockside, as this power boat is a true runabout and not a utility. She is almost all deck, engine room, two rows of seats and little, if any, walking around room in the cockpit areas.

I got a ride on a Pennsylvania Lake in a similar boat that belongs to a friend that was also lovingly restored and its ride and handling during that fresh water cruise was really a terrific experience. That one had an extremely special Chris Craft engine rebuild by an out of state noted engine builder of classic engines.

Chris Craft offered this wood power boat model in either a natural wood stained and highly varnished hull and deck or as a painted red and white finished powerboat. Most came with the seating areas finished in a Chinese red or red hue, but blue was a choice, as I understand it, but not in all of the model years the Racing Runabout was built post WWII.

The photos are from Moores Marine,  www.woodenboatrepair.com  that did this runabout’s restoration. Great workmanship and attention to detail is shown in the work coming from Moores you can see.

This one is a 1954 model Chris Craft

early on in the restoration work

Let me tell you a story about: John Hacker, the noted race boat and runabout  boat designer; Ernest Wilson, Harold Wilson, and Harold’s finance and later, wife, Lorna, a famous boat racing family; the Gold Cup races and its boat class; Greavette Boats of Gravenhurst, Ontario, Canada; and Harry Miller of the famous Miller car racing engines fame. They were all involved in a Gold Cupper named Miss Canada II a racing boat.

Miss Canada II, the Gold Cup class race boat, was designed by Hacker for the Wilsons, at their request. They also engaged Miller to design and build a 1,000 Hp. engine  that met the rules of the racing class. The boat was built by Greavette and the Miller engine was shipped there for installation. The engine never did run at Greavette and it and the race boat were shipped off to Lake George, NY, which was the race site. On race day, the engine broke before the race started. Thus the boat and the famous Wilsons did not get to race. After repairs, the engine did work for three laps at a later in the season race, before it broke again. Thus, that year’s racing season went  past without Miss Canada II ever finishing any race, let alone winning a race.

The following racing season, the Greavette boat, Miller engine, and the racing Wilsons did get some competition laps in, but did not win a race as pieces of the boat interior broke up, and the boat, while fast, was found to be too lightly built to stay together long enough finish a race. Thus ended the second season of boat racing for Miss Canada II.

After more work over the following winter on both the engine and boat, she started her 3^rd racing season. The next summer, it was found out that the boat strengthening work done by the boat builder had changed the handling balance of Miss Canada II and she was deemed too hard to handle to win races and allow her driver and mechanic to stay alive while doing so.

The Wilsons ordered a new race boat from a different boat designer, for the next year. Miss Canada III, as the new boat was named, was a race winner.

Michael Aronow wrote this book about his Dad, Don Aronow, and Don’s involvement in boating. Don was a boat racer, a boat building businessman, a world champion, a founding leader of deep vee boat building and offshore racing. He started and owned Donzi Marine, Formula, Magnum Marine, Cigarette Racing Team, Squadron XII, and USA Racing Team and almost all of 188^th Street.

This is the book for a Christmas present to a boater.

John Crouse, Dick Genth, Yachting magazine, Jim Wynne, Mike Gordon, the Beatles, Chubby Brown, Walt Walters, the Donzi sweet 16, Bobby Moore, Knocky House, the models, some of the tricks, the Wyn-Mill II, the Banana  boat, outboards, inboards, I/O, Mercury Marine, Magnum Missile, Molinari, Carl Kiekhaefer, Aeromarine, Roger Penske, Betty Cook, and Mark Donohue are all in the book.

It is a who’s who of power boating and power boat racing offshore. A real history of the racing scene.

Don Aronow made the offshore power boat racing scene very early on and made it into the force it is today. He left New Jersey for south Florida while still a young man and built an empire of race wins, trophies, championships, boat building companies, showmanship, and hard work.

It is only really available on the collector book market. The ISBN number is 0945903227.

Get a nice one and have a good look all at the photos and a good read from the material that Michael shares about a rare man in the boating business in this boating book.