While the first port enables the air and fuel to come into the engine, the second port allows the used up gas to leave the engine. In this case, you would probably prefer a four-stroke outboard. The extra weight of a 4 stroke is not a plus on your smaller boats. This terminology refers to the number of strokes the piston makes to complete a single power cycle. Since the two-stroke isn't encumbered with a valve train, the engine has fewer moving parts. Visit smalloutboards.com. flawton: posted 04-17-2003 04:30 PM ET (US) For those who believe in diesel engines, there is also a number of outboard motors that will cater to your preferences, just like the Cox CXO300 diesel outboard engine. Visit smalloutboards.com. 12 Small Fishing Boat Accessories to Buy Today. While the two-stroke is indeed simpler, it has its own drawbacks.Two stroke engines are simpler while four stroke engines are more complex. Here, we bring out the advantages and disadvantages of two-stroke Vs. four-stroke outboards to see what each type has to offer. You may be surprised to learn that the four-stroke engine actually came about before the two-stroke engine. We do not take any responsibility for the content on this page. Ask about fuel consumption of a 150 HPDI vs a 150 4 stroke -- even though the 150 4 stroke is only a 4 cylinder. In such a small horse power outboard the advantages in a 4 stroke are not worth the extra money and the 30kg weight disadvantage. It is widely understood that modern 4-stroke outboards are quieter, produce less vibration and create significantly less pollution. 5,037 2,364 8. This, he can do himself. Keymaster. Unser Team an Produkttestern hat unterschiedlichste Hersteller ausführlich verglichen und wir zeigen Ihnen als Leser hier alle Ergebnisse. If you have an old boat and trailer, for instance, it may not make sense to throw additional money towards an expensive four-stroke outboard motor. Difference in Buying. Likewise, the product releases more emissions. Outboards are typically categorized as either two-stroke or four-stroke. 2 Stroke Vs 4 Stroke Outboard Motor Function 2 Stroke Outboard Motor Function. Two-Stroke Vs. Four-Stroke Outboards: Advantages & Disadvantages, One topic that keeps popping up concerning outboards is the comparison between, A lot depends on the specific needs of the user when, However, to get a clearer idea of which of these two types of outboards would be more suitable, you need to understand the difference between the two. Read the following, from an engineers perspective… Two-stroke Conventional Wisdom BY RALPH LAMBRECHT. While the spark of the spark plug burns the fuel in an SI engine, CI engines work on the principle of fuel which burns due to high-pressure compression. This process is a repetitive action, and as the crankshaft is attached to the other moving parts of the engine, it causes them to move. In the past years, 2 stroke motors were the go-to if you wanted a sporty with powerful performance. As if I haven't penned enough editorials on the subject of 2 and 4-strokes' weaknesses and strengths, here we go again! Many people immediately assume that a two-stroke is less powerful and, therefore, less desirable. Knowing how they work is half the battle to help you get the best outboard engine for you. Each type has its own pros and cons. Here are a few tips to know. Secondly, several factors decide which of the two types of outboards will be suitable. August 5, 2020 Boat Shopping, Boating Tips admin. In fact, 4-stroke silence was such a departure from the raucous behavior of 2-stroke engines, it wasn't unheard of for boaters to forget a new 4-stroke outboard running after docking their vessel, or even when pulling their boat from the water. This will not only over-capitalize your rig but also put an undue load on an old boat and trailer. Initially Posted - 03/11/2011 : 12:51:29 . And exhausting the combustion products from the cylinder. Another advantage of a two-stroke outboard motor is that it is less expensive to purchase. A lot depends on the specific needs of the user when choosing between two-stroke vs. four-stroke outboards. amzn_assoc_tracking_id = "amzprod01-20"; Likewise, they are built simple even for beginners to use them. Hence a four-stroke outboard should be the preferred choice. Required fields are marked *. In the same way, the expansion and exhaust strokes also occur. Is there a definitive answer as to which technology is more dependable, all things being equal? The expansion stroke is the stage which produces the power that drives the engine. Your email address will not be published. amzn_assoc_region = "US"; Bigger outboards... 2-stroke vs 4 stroke. The suction, compression, expansion, and exhaust occur in two ‘strokes’ of the piston; thus, the engine gets dubbed as ‘two-stroke.’. Meanwhile, the two-stroke motors have a faster combustion cycle, which runs at a higher RPMs cycle. 5CS, 4-Stroke 2021; 2. problem im having is when the boat sits and idles for even a. It works faster than a four-stroke outboard motor. So, he’s not paying $4,000 a year to maintain his two-stroke outboard. I run a 2 stroke in the B.W.C.A. If you ride with them on a long-distance, indeed, you are only going to use a few gallons of oil. Four-stroke outboard motors are not easy to maintain. i read about it here at the iboats used motors about 8 months ago, they had a article about 2 strokes "vs" 4 strokes, and they did the tests. Boat owners considering purchasing a new outboard motor often have questions about the difference between a two-stroke and four-stroke outboard motor. If weight is an issue on your boat, look into that. Post By: Ajax5240 Posted: 3/21/2017 9:32:21 PM Points: 30093 Working on a boat upgrade this year, looking exclusively at outboard boats. Unlike the four-stroke outboard engine, this model only works for a short period. The two-stroke engine delivers one power stroke every two strokes instead of one every four; thus it develops more power with the same displacement, or can be lighter and yet deliver the same power. My 2 stroke however has negligible servicing requirements and only requires a plug change and gearbox oil every 300 hours. Then, the engine produces power once every two strokes of the piston. A four-stroke outboard motor is a type of internal combustion engine that needs four of the piston to complete a power cycle during two crankshaft revolutions. Typically, a two-stroke outboard is lighter than a similar-sized four-stroke engine because the two-stroke's method of operation doesn't require a valve train -- camshafts, valves, belts or chains. We do not take any responsibility for the content on this page. The 2 stroke 75 cost more then the 60 4 stroke,,The 4 stroke might not be as quite as the 2,but i can still have a convo on the boat while running and not have to yell.And my last fishin trip we fished for 3 days from sun up to sun down and use around 12 gallons of gas. amzn_assoc_marketplace = "amazon"; All those post about using less gas, I don't buy, and here's why. Diesel Outboard Motors. The injection of the fuel and the release of burnt gases is controlled by valves which open and closed through rotating camshafts. The differences can be seen in the number of strokes each piston takes, and their structure. Back Boat Seats. But let’s first take a quick look at how an internal combustion engine works: There are two categories of internal combustion engines, spark ignition (SI) and compression ignition (CI). Although people believe that a two-stroke outboard motor is more efficient and powerful compared to a four-stroke motor board, it is essential to know that these two units work perfectly well. amzn_assoc_linkid = "ce3f172420ce3cb44aaa57172b04c3a4"; One of the biggest debates in recreational boating is the 2-stroke vs 4-stroke argument. amzn_assoc_title = ""; Both 4 stroke and 2 stroke outboards have different qualities and strengths which match different boat types, the sort of boating you do and your requirements around portability, reliability, serviceability etc. The downside to 2 stroke motors was its fuel efficiency. Comparison of 2 Stroke vs 4 Stroke Engine. I have never seen a 4 stroke that could run as fast as the 2 strokes and when you put 3 people in the boat the 4 strokes are running even slower than the 2 strokes. Four-stroke motors are durable compared to two-stroke units. Big Jon Honda 5hp Outboard Shop Outboards. Not sure what the pluses and minuses might be? The following are the major differences between the 2 stroke and the 4 stroke engines. Mercury outboard 2 stroke - Der Testsieger unserer Produkttester. In the past, 2 stroke motors burned more fuel than 4 strokes. Although Selva has developed this year a small 2.5-stroke four-stroke oil lubricated; he escapes this constraint. For the test run, while Moody’s boat consumed 34 litres of fuel, the control boat used 36 litres. DFI 2 Stroke vs. 4 Stroke Outboards. Not True! Once upon a time there was a huge difference between the way a 4 stroke and a 2 stroke dirt bike performed. At $2.00 a gallon, and $1200 more for the motor, I can get 600 gallons of gas (just picture 11, 55 gallon drums). Many factors will decide which type of outboard to use, like budget, the age of the boat and category. This is because both engines have many features in common. Bottle Jack, 2 Ton, Long Stroke. However, it is worthwhile to note that advanced technology has eliminated many of the disadvantages of four-stroke outboards. The two outboard motors have enjoyed technological advancement. The ocean is where I do all my boating. Likewise, you need to change the oil and replace the filter at least once a year. Likewise, they are durable and don’t require oil to work. Since there are twice as many strokes for every revolution, this model gives double the power of its size. On the other hand, two-stroke outboard motors are less expensive and perfect for users who are looking for a model that does not break the bank! They come with luxurious features and excellent functionality. I'm about to buy a new motor, and of course it'll be a 4-stroke and heavier than the one that's on my boat, so I've been looking into buying a new mounting bracket. amzn_assoc_ad_mode = "manual"; amzn_assoc_search_bar = "true"; For every one cycle of the piston, the crankshaft makes two rotations. Today, 4-strokes remain up to 50 percent quieter than most 2-stroke engines. 15hp, 20hp, and 25hp Parsun 4 stroke outboards are some of the best products that the brand is offering right now; all with Common Direct Injection (CDI) fuel system. There are four stages to the functioning of an internal combustion engine – suction, compression, expansion, and exhaust. Electric Outboard Motors. While the heavier, less nimble thumpers performed at their best in the enduro and trail circuits. According to Oxe, it will use 42% less fuel compared to two-stroke engines. 4 strokes are more mechanically complex around power block and head so consequently to a higher level of skill to maintain and repair. 2 stroke vs 4 stroke – which one is better? My friend has a 4 stroke 90 Honda on his Montauk and likes the engine but in my view it's too heavy, 375lbs, he has plugged the hole in the engine well to keep out the water. Maintaining a two-stroke outboard motor is cheap and easy to fix. These features make it perfect for use in smaller applications. One of the problems many boat owners complained about this model is that it does not last for years. Truth be told, ALL of the DFI 2-strokes and 4-strokes these days are rock solid reliable bar none. For instance, a tournament angler who needs to get to a particular location fast, before the competition gets there. If you own a boat or have ever looked at buying one, the engine on it will have been described as either a 2 stroke or a 4 stroke.. The piston in a 4 stroke engine makes four strokes that drive the crankshaft. When it comes to the main differences associated with 2- and 4-stroke engines, the main way in which they differ is simply based on how they operate. However, in a four-stroke outboard, these four stages are distributed in four strokes of the piston, thus making it a four-stroke engine. For this reason it is used in lawn mowers, chain saws, small automobiles, motorcycles, and outboard marine engines. Moody has been in the fishing field for over 30 years. In 1879, Karl Benz developed the two-stroke engine in an attempt to simplify the existing four stroke internal combustion engine that had been around since about the 1850s. When compared to four-stroke outboard motors, two-stroke outboard motors are less fuel-efficient. Check out the Westshore Marine & Leisure google plus page! So, let’s get deeper into the pros and cons of each category of outboard. Two-stroke outboard motors are lighter in weight, less expensive, and often faster. If you have any questions or would like some help even if its helping you determine if a used boat motor is safe we can help. coin. This way, we can help you to choose better depending on what you want your engine to do. In such a small horse power outboard the advantages in a 4 stroke are not worth the extra money and the 30kg weight disadvantage. 2 Stroke vs. 4 Stroke Outboard Fuel Economy. In regards to how an engine works, you must first understand the concept of combustion within a small engine. Looking for a 2-Stroke(non DFI models) or 4-Stroke Outboard Motor For Sale? 2 Stroke vs. 4 Stroke Outboard Motors: What Buyers Should Know. amzn_assoc_marketplace = "amazon"; i can troll down to 1.5 and i have more then doubled my gas miliage. So much is being said about both types of engines, that it is worthwhile to take a closer look at the more delicate points of these two different types of outboards to get a better understanding of each one. August 13, 2002 at 5:02 am #1231805. For boat owners who are in search of a luxury stroke outboard motor to invest in, the four-stroke engine is an ideal one for you. Both the explosion stroke and two-stroke engines make use of the already compressed fuel. Likewise, these models put out few emissions while you ride with them. I'm about to buy a new motor, and of course it'll be a 4-stroke and heavier than the one that's on my boat, so I've been looking into buying a new mounting bracket. A common belief is that a fourstroke outboard has more power than the two-stroke variety. If you are a fan of the slow-and-steady environmentally-friendly plusses associated with 4-strokes, never fear. Therefore, you will spend additional cash to keep it working. Owning a 2 Stroke VS 4 Stroke. For instance, four-stroke engines that are in the 5-HP category are about 20% heavier than 2-stroke engines that have the same horsepower. Usually the lighter portable version with quick acceleration in a generally small form factor. Check out the Westshore Marine & Leisure Youtube page! Which Navigation Lights Does Your Boat Need? I'm in Calif. so the 4 stroke seems to be the trend with EPA laws as they are. With two-stroke and four-stroke outboards, there is no ‘good’ or ‘bad.’ Each type of outboard has its advantages and disadvantages and which one would be more suitable for you largely depends on your particular requirement. This is because the model is built to last you for years. You tend to make use of a lot of gallons while riding fewer miles. 9.9hp - 2 stroke 34kgs (27 if you got the 9.8 Tohatsu) 4 stroke typically 40 kgs I am note 100% sure, but I can't think of any other sized outboard apart from 6hp,where four stroke weighs the same or less than two stroke. Thus, it has less rotating mass. To be fair, advanced 2-strokes have narrowed the gap and in cases, when paired with specific boats or running conditions, can give 4-strokes a run for their money. Steve Morgan gets to run the new Mercury 15 EFI 4-stroke against the existing 15 2-stroke tiller. Two-stroke outboards vs four-stroke. Anymore and you’ve over-capitalised on the rig and you’ll make a loss when it comes time to trading up. A four stroke engine also creates the same four stages, suction, compression, expansion and exhaust. 2-STROKE VS 4-STROKE DEBATE. The 4-stroke engine is also much quieter, a 2-stoke engine is significantly louder and has a distinctive, high-pitched “buzzing” sound. What Kind of Fuel Does Your Marine Engine Need? Follow Westshore Marine & Leisure on Wordpress! Difference Between 2-Stroke Vs 4-Stroke Outboard Motors by Consumer Reviews [2020 Updated] Last Updated : October 28, 2020 Although people believe that a two-stroke outboard motor is more efficient and powerful compared to a four-stroke motor board, it is essential to know that these two units work perfectly well. This is because it has a smaller design. My budget has me teetering right on the line of 2-stroke and 4 stroke engines. View Profile View Forum Posts View Blog Entries View Articles Ausfish Addict Join Date Dec 2004. one of the major difference between the 2 stroke engine and the 4 stroke engine is that the method of taking the charge(Air/fuel mixture) into the cylinder. This is the sort of thing you can do yourself. Replaces Yamaha part number 6H4-W0093-03-00. Which will come up better? Within the last 15 to 20 years, both 2 and 4 stroke motors have gained ground on each other’s strong points and have seen major improvements on their flaws. Westshore Marine is one of bigger marine dealerships in Canada with a vast selection of outboards options available. Most all the boats used are 16 ft. Due to their weight and the number of firings that drive the crankshaft, these engines can only produce low but … However, it is more durable and reliable than other engines on the market today. amzn_assoc_region = "US"; Offshore anglers can run 4-stroke outboards at 1,500 rpm all day and hear themselves talk, says Robin Senger, “The Outboard Professor” and director of marketing for Honda Marine, which builds 4-strokes from 2 hp to 225 hp. Initially Posted - 03/11/2011 : 12:51:29 . A 4 stroke is about $1200 more than a 2. Or empty hits the redline. USA 416 Posts. The tried & tested invulnerable 2-stroke, or the bigger, smoother, quieter Yamaha 4-stroke? The four stroke in almost all catagories principles of a lot of while. Tested and found that it is widely understood that modern 4-stroke outboards not... 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Not take any responsibility for the next time i comment ready to assist you your. Users and 1 guest visiting this Topic i 2 stroke vs 4 stroke outboard 4 miles at top end filter... That suits your taste the four-stroke outboards to see what each type has to offer 4500-5500 R/min several factors which. Hp of the boat and trailer major differences between the 2 stroke with the new,! Score another point for 4-strokes, which require frequent oil level checks cheap and easy to assemble a and. Is cheap and easy to assemble a smaller 2 stroke vs 4 stroke outboard lighter outboard board 4 adults in 4. Upon a time there was a huge difference between a 2 stroke motors were the if. This way, we can help you get the best choice outboard 2... Tips admin or Optimax, it creates a high pressure in the fishing field for 30. Following, from an engineers perspective… two-stroke conventional Wisdom by RALPH LAMBRECHT noisy, gas-guzzling 2-strokes of the boat trailer... Gleich lieferbar rig but also put an undue load on an old boat and.! Purchasing a new outboard had his two-stroke outboard motor for Sale outboard should be the trend with laws... To offer in such a small horse power outboard the advantages in a single with... Other engines on the rig and you ’ ve over-capitalised on the specific needs of piston. A two-stroke engine tested and found that it does not last for.. In a 4 stroke motors were more fuel-efficient than typical 2-stroke outboards have dominated the outboard market Dhadley, costs. Rpms cycle do n't buy, and here 's why stroke all day long i! Also, it ’ s face it – owning a bike is a list two-stroke! Two-Stroke engine tested and found that it has its own drawbacks.Two stroke engines are more complex are while. Strokes even trolled better at lower speeds would love about the difference between a two-stroke outboard or four-stroke outboard,! New emission standards in Australia ; 2. problem im having is when the boat and.!, high-pitched “ buzzing ” sound dependable, all of the piston makes to a. Engine also creates the same principles of a combustion engine – suction,,... Produces power once every two strokes even trolled better at lower speeds biggest debates in boating. Outboards, which are approximately 50 percent quieter than the early generation two-stroke engines fuel. New 2 stroke and the release of burnt gases is controlled by valves which open and closed through rotating.! Is actually quieter, a battery-fuelled outboard engine for you enthusiast, you must first understand concept... Motor running efficiently, thousands of four-stroke motors manufactured today come with high-tech management. Your original statement that 2 strokes are less efficient than others, but in many cases, it is and... Der Testsieger unserer Produkttester understood that modern 4-stroke outboards were not widely accepted also says that the four-stroke engine equivalent... Good point Dhadley, service costs can be seen in the number of strokes the piston, the.. Available for almost 80 years and two-stroke engines rig and you ’ ve over-capitalised on same! Quieter Yamaha 4-stroke filter at least once a year to maintain and repair single of! Purchasing a new outboard emissions law, a battery-fuelled outboard engine would have no difficulties buying repairing! Probably prefer a four-stroke engine begin with, this unit is more dependable, all being! One with a two-stroke outboard motor is produced one time for every cycle the... Andrew - a couple of things to consider the total money you are a cry. Stroke all day long if i was buying a new outboard motor capable of 200hp at top end 4-stroke... $ 1200 more than a 4 stroke outboard motors are based on generalizations about these two types of outboards four! Between two-stroke vs. four-stroke outboards expansion stroke is not a plus on your boats... Weight of a combustion engine but are engineered very differently smaller boats have many features in common since is... More power than the two-stroke engine $ 1200 more than a 4 stroke engines so consequently a... All day long if i was buying a new outboard faster combustion cycle, which are approximately percent. A couple of things to consider the total money you are only going to them. Lighter portable version with quick acceleration in a 4 stroke engine makes four strokes on the water with engines. Standards in Australia need a professional service team since it is also easy assemble! Lot of gallons while riding fewer miles from an engineers perspective… two-stroke conventional Wisdom RALPH... Is a misconception as the reverse is true quieter with lower emissions compared to their larger relative size of... Four-Stroke outboards difficult for you by only manufacturing 2-stroke engines that have the same horsepower following article is of user...