We do experience some power differences between the two engines but not enough to risk damaging the outboard. When I asked various engineers and boat designers to quantify the difference, I got answers varying from five to 15 percent. HELP ME CHOOSE. You can screw with the carbuerator and open up the jets, but the engine may run hot, and you may … Seven Marine (which is now owned by Volvo Penta) takes things to another level with its supercharged, 6.2-liter, small-block V-8 powerhead that makes 527, 577, or 627 horsepower, depending on the model ordered. We have fully boat tested this motor and it runs perfectly. Request a Quote; Find a Dealer; Online Store; … Is 300 hours sign … read more. The hull design, sailing conditions, and your personal preference are all very important. However, even here, it is possible to increase the number of horsepowers. Electronics limiting spark advance or different module. 30 HP & 55 HP. When you move up to 20HP-30 HP, you can expect you motor to weigh roughly 100 to 160 pounds. As there are probably more boaters that would rather take their outboard in for a new water pump impeller, than do the easy job themselves. 15 HP Outboard Motors. Compression is very strong on this motor. Choose compact performance with Evinrude Portables, available in 3.5 HP, 6 HP, 9.8 HP and 15 HP outboard motors to fit boats of all sizes. 8 Answers. Possibly a different exhaust tuning plate. Thanks. $2,575.00 More Info. The gear reduction ratio is the same on both motors, also stroke, bore, and propeller. with just a couple people in it. I was woundering what I could do to the motor to make it have a faster top end speed. What else can I … via YouTube Capture20hp Tohatsu On a 13' Boston WhalerTop speed: 23.7 mphSpeed will vary with weight and hull design.Thanks For Watching!----- Find a Dealer ... 3.5 HP to 15 HP. When it comes to adjusting the idle state on Johnson Outboard motors, the part involved would most definitely have to be the Carburetor. Boating Magazine 15 pitch. As i don't have money at the moment to get a bigger one, is there anyway i can add a few more hp cheaply and without destroying my engine? outboard engine to test it along with the Suzuki 9.9 for an update to this 9.9 outboard … Get mariner 15 hp outboard manual free download PDF file for free from our online library However, 4 stroke motors have become much faster and lighter, making today’s market very competitive. Said outboard engines mark their long-time proven as the most productive units. Special Discount Today. This 15-horse Suzuki outboard is a great powerplant for this youngster’s 14-foot skiff. Generally speaking, the more outboards you purchase to produce a … You could start simply by replacing the … Most 2HP-10HP outboard motors weigh in the neighborhood of 35 to 90 pounds. we could even ski behind it. The motor is quick but not quick enough for my liking. As stated previously, 2 stroke motors used to be the choice among those looking for speed. even though my parents had a 15 foot glass boat with a 35 hp motor on it. We test many 9.9hp and 15 hp outboard motors on our test boat. Sort by: OUT OF STOCK - EMAIL ME WHEN AVAILABLE. If you want one of the coolest 21 outboards around, this is it. If you're serious about getting a … If you concerned about speed you should find a boat with at least a 50 hp. 5,752 satisfied customers. C Marriner. This motivates them to modify their 9.9hp to a 15hp. Honda is in great shape. I was looking at Honda outboards yesterday and noticed that the 9.9 HP model seems identical to the 15 HP model except that the 9.9 has an extra bolt in the throttle linkage which prevents it from opening completely. One is initial cost. We hear it all the time from boaters who are forced to use 9.9hp outboard or less at their local fishing lakes. E-TEC G2 Customizer; BUY. Save this Book to Read mariner 15 hp outboard manual free download PDF eBook at our Online Library. Can I just change the Carburetor to a 15 Hp unit or do I need to make other modifications? We have put six 5hp outboard engines to the test to find out which one offers the best performance, practicality and value for money. Were only talking about a 15-HP difference. Answer Save. But remember that these are all rough estimates: I just try to give you a ballpark figure. That’s why the electric outboard motors under 20hp (3hp/4hp/5hp/10hp motors) are still the mainstream in the consumer market. Contributing to the power of the Honda engine brand the following solutions: timely, systematic maintenance; the contents of the engine air filter in perfect condition; the installation of a reliable device that can provide the most … I have a mirro craft Utility V serris boat or also known as the top of the line lakes and rivers boat at mill fleet farm the one with the live well, floor, and storage rigged up with a 9.9 yamaha, and I'm wondering if it goes 15 mph with a 9.9 how fast wi Talk about an inefficient way to propel one’s self upriver! 2 Stroke vs. 4 Stroke Outboard Top Speed. Manual or Electric Start. Were waiting for Yahama to release its re-designed 9.9 h.p. Nordic uses a narrow pad to keep it stable, yet the narrow beam ensures it can slice through anything. Certified Mercury Tech. I have to make a choice between a 2010 Honda 15 HP outboard with 300 hours on it for 2100.00 and a 2013 Tohatsu 15 HP new for 2400.00. Glide through the water faster with Evinrude's best-in-class acceleration, including high output outboards for top-line speed. Adjust the engine trim for best speed.. the boat will go faster a lot flatter on plane that you might intuitively think. Make sure the bottom is smooth with no dings or growth. REQUEST A QUOTE. 1 decade ago. And if you want to speed up to 15 knots, you will probably need a 100 hp electric outboard, and that requires much more energy and battery than we can imagine and will cost a fortune. If you do decide to do this, which we … It has only burned 4 gallons of fuel in its life so it is nearly new. This engine is very easy to start and runs great. Hi! Explore. Favourite answer. Consider two other factors. There is no one formula to get an exact number. 15 HP: 28' 10,000 lb: 18 HP: 30' 12,000 lb: 22 HP: 32' 15,000 lb: 28 HP: 36' 18,000 lb: 34 HP: 40' That sounds about right to me. 2021 Tohatsu 15 HP MFS15ES . Salty Doug Charles. After some good use, the output goes down even more. I am from Russia, and i have Honda BF20D3 SHU outboard. I know Garry has a picture. It’s the proverbial sweet spot, serving many different types of watercraft involved in a variety of activities. now days a 35 on a 16 foot heavy glass boat will seem under powered . I have a 15 hp outboard motor on my boat, its way too slow as is, let alone having 5 people on board. Hi! Running any of todays performance 250 HP engines would make this a sweet little package, it can handle a 300 if you want to step it up. Relevance. IN STOCK. Suzuki 15 HP DF15AS3 . How To Make Your Boat Faster The horsepower-to-weight ratio of your boat plays a huge role in speed and efficiency. but as long as it will get on a plane it should do about 30 mph. You can't rebuild your hand-laid glass boat out of vacuum-bagged carbon fiber, but if you carry less gear and fewer stores aboard, your boat will be faster and more efficient. My thought is [carburetors] may be different, or just jets. Buying the right 5hp outboard could be one of the most important decisions you make as a boat owner, as you don’t want your tender conking out leaving you struggling with the oars. So a boat powered by a single 300-horsepower outboard will go faster than the same boat powered by two 150-horsepower outboards. While the mainstream outboard manufacturers top out at 400-hp with the Mercury Racing Verado 400R and Yamaha’s new 425-hp outboard, even higher outboard power is available. Photo by Lenny Rudow. How can I increase the output of my 2000 Mercury 2-stroke 9.9 to 15 Hp? Outboard jets are about 30 percent less efficient than their prop-driven cousins…and that’s when the stinking thing is brand spankin’ new. 97.0 lb Weight. This is the easiest construction of a weedwacker outboard I could think of. If you have been trying hard to find an outboard motor that doesn’t force you to break the bank, this one should be right up your alley. 2020 HONDA 8 HP BF8DK3LHA Outboard Motor; 2015 Nissan 8 Hp NSF8A3EF2 Outboard Motor $ 830.00; 2019 Mercury 15 HP EFI 15EH Outboard Motor $ 1,486.00; 2019 Yamaha 25 HP F25LWHC Outboard Motor $ 1,839.00; 2018 Evinrude E-TEC 30 HP E30DRSL Outboard Motor $ 1,774.00 The sound sends chills up my back. MFE. 15" (Short) Shaft Length. What is your thoughts. You can’t compare a 6.5HP engine with a 3.5HP one, … 15hp Horsepower. This is basically what powers up your outboard motor and therefore, … I have already changed my prop to a stan. Experiment with a high pitch propeller - you'll lose low end takeoff, but increase top speed. This is a 2-stroke, 15" Short shaft, manual start, tiller, 75lb outboard. Compared to many others out there, it doesn’t cost a fortune, but you should also know that it comes with limited power. Explore. NOPTEG Hangkai Water Cooled 2 Stroke 3.5 HP Outboard Boat Motor. Depending on your desire for convenience as well as your budget, you can choose an electric-start option to make starting your outboard easier. I have an early 90's 25 hp mercury outboard on a 14' V-hole boat. LEARN. But the same “workhorse” status can be attributed to most any outboard in the 8- to 15-horsepower slot. As with any other engine, this is the part which serves as the " combustion powerhouse" of every engine and works by blending air and fuel by employing the Bernoulli's Principle. Re: how can i make my 1975 2 stroke 15 hp johnson go faster Just thinking, there is a guy in the Florida Chapter of the Antique Outboard Club that has a 15 that just flat-out RUNS. We tested the 15-inch shaft Mercury 9.9, Tohatsu 9.8, and Honda 9.9, each of which could also be used as a sailboat auxiliary engine. Post a question at Ask-A-Member at aomci.org and see if you can raise a response about who that is. How fast will a 30 hp outboard go How fast will a 30 hp outboard go Help Me Choose; Performance Reports ; CUSTOMIZE. This is a great running 15 hp Evinrude outboard boat motor that we completely serviced and restored. I use it on a 12' boat that can handle 15 Hp. EVINRUDE 15 HP outboards are by far the most … With at least a 50 HP nordic uses a narrow pad to keep it stable, yet the beam. Find a Dealer ; Online Store ; … Talk about an inefficient way to propel one ’ s the! Store ; … Talk about an inefficient way to propel one ’ s when the stinking thing is spankin. The difference, I got answers varying from five to 15 percent could... All the time from boaters who are forced to use 9.9hp outboard or at. Efficient than their prop-driven cousins…and that ’ s why the electric outboard motors weigh in consumer! Some good use, the how to make a 15 hp outboard faster goes down even more who are forced to use 9.9hp outboard or less their. 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