2 Stroke Vs 4 Stroke Outboard Power Comparison

We offer the most-complete line of outboard power, for fishing boats and speed boats, for pontoons and tenders, for work and for play. I think snowmobile buyers value the inbred traits of both 2-strokes and 4-strokes using solid knowledge to make their purchase decisions. de • - mercury outboard wiring diagrams mastertech marin rh maxrules com 70 HP Mercury Outboard Schematic 70 HP Mercury Outboard Schematic. The combination of light weight and twice the power gives two-stroke engines a great power-to-weight ratio compared to many four-stroke engine designs. With an innovative power-to-weight ratio it has revolutionized the portable motor category. Any bigger I would get a 2 stroke. Author: Topic: OptiMax vs E-TEC. The carbed 8hp was a little louder than the 25hp believe it or not, and the 25hp is incredibly smooth at all power outputs. your boat will be fine with a 4 stroke. Yamaha F130A outboard motor. Equipped with a 4-stroke engine; Weighs around 215 pounds, and is less heavier than its counterpart; Generates a power of 37 hp; Easier to handle in comparison to Yamaha, but loses out on the speed factor; Fuel tank capacity is 1. In the last 4 years, fiberglass outboard registrations have increased +29. Whilst 4-strokes make a power stroke every other revolution of the crankshaft, Evinrude E-TEC makes a power stroke every revolution. I had a 30 hp 2 stroke Tohatsu main engine and it never missed a beat in 7 years heavy use. 2 strokes are awesome. In the following years as emission mandates became more aggressive, especially in California and Europe, outboard manufacturers seemed to scramble for solutions. That's with 4 to 8 people and stuff on board. I miss the days of 2 strokes vs 4 strokes. These are much higher performance engines than an outboard motor, but still it highlights the very rapid wear 2 stroke piston rings are exposed to. 2-STROKE VS 4-STROKE. There was a time that 2 stroke outboards were banned on lake Tahoe, don't know if they still are. Brake Specific Fuel Consumption of 2-stroke vs 4-stroke. A two stroke outboard at 5750 rpm rating typically has a very nice flat horsepower curve- it has a lot of horsepower available even at low rpm compared to the 4 stroke with it's higher rpm rating. I like the added torque and lower weight of the ETEC, the timing chain vs. 2 strokes do generally generate more power with less weight. This is important from a power to weight ratio perspective. The Yamaha 25 HP Four Stroke has been completely redesigned to become the water’s lightest 25 HP outboard motor. The 4 strokes have made leaks and bounds in recent years. Boat owners considering purchasing a new outboard motor often have questions about the difference between a two-stroke and four-stroke outboard motor. Continuing the lineup is Suzuki’s 9. Looks - if it was up to me, every outboard would have the "alien" Pro Max cowling with the wicked air scoops on the sides. Later on, the marine company upgraded the engine to displace 4. The simpler and more compact engine structure of two strokes make maintenance exceedingly easy. 2-Stroke vs 4-stroke Engine Preference Survey. A 2-stroke engine will compress with 1 stroke upwards and exhaust with 1 stroke downwards but this requires lubricating oil mixed into the fuel. What is engine stroke? Most newer cars, trucks and SUVs have engines that are very fuel efficient. lower polution, quieter, and more efficient. There is also the debate of whether you should be using brand name 2 stroke outboard oil sold by the engine manufacturer or opt for a less expensive aftermarket oil. What is the difference between a 2 Stroke Engine and a 4 Stroke Engine? The differences can be seen in the number of strokes each piston takes, and their structure. 2 Stroke Vs 4 Stroke Outboard Motor Function 2 Stroke Outboard Motor Function. Armed with a 2-stroke engine which performs better than that of the Honda's; Weighs around. 5 hp 4-Stroke,Tiller, Light weight - only 30 lbs. During the past decade outboard engines have grown dramatically in size, popularity, and reliability, with technological advancements so important that the once-settled two-stroke versus four-stroke debate has been re-opened, alternative fuel outboards have become a viable option, and significant benefits like joystick steering are now a consideration. The greater power-to-weight ratio of a two-cycle trimmer means it can easily cut through dense growth without significant engine power decrease. 5hp 4-stroke outboard engine is light, compact and powerful boasting the largest displacement in its class (85. I know there are some Sabre's out there that have the Mercury 4 Stroke (Billy M did a overview of the 2014 Sabre with a 4 stroke on it) but it seems everyone is tight lipped about what kind of performance lost there is versus the Opti Pro XS. The old salts in the marinforget the four stroke and get a used 2 stroke. Whether you are looking at a new boat and motor or you are looking to freshen your old boat up for the Spring fishing season with a new motor, choosing the right design is important. Shop, read reviews, or ask questions about 4-Stroke Outboards at the official West Marine online store. The pros of a 2 stroke vs a 4 stroke, according to some riders, include: quicker acceleration, weighs less than a 4 stroke, lower cost of maintenance and repair, power to get the job down and overall confidence in the bike's performance. This makes four stroke engines a good choice for recreational boaters. When it runs it delivers all the power and torque that its rated for. The lightest DOHC outboard in its class, this I-4 is the perfect, lightweight 200-hp solution for small- to medium-size boats. A complete two-stroke pipe has properly tuned header, convergent, belly, divergent and stinger sections--a difficult process. the pinion gear rides up and makes the noise only in fwd. The consumption of gasoline is much lower. Weight is not THAT big of an issue. A four stroke has: an intake stroke with the piston moving downward drawing in the fuel mixture (stroke 1), compression stroke with piston moving upward (stroke 2), combustion stroke with piston pushed downward from the explosion (stroke 3) and exhaust stroke with the piston moving upwards and pushing spent gasses out (stroke 4). The 4 stroke fires once every 4th revolution and the 2 stroke is firing twice as often, so the power is quicker and stronger in a 2 stroke. Direct comparison between different types of exhausts for the two-stroke engine, on the left you can see the engine and its exhaust, in the center the progression curves of the pressures (effective pressure in atmospheres) to the exhaust port (detection area highlighted in red), on the right the power curves of the various drains. It runs just as strong as my Merc 8 hp 2 stroke. Of course I will save money on controls and gauges by staying with Evinrude, but many people have recommended that I go to a four stroke because of fuel economy, savings on oil, smooth, quiet, etc What are your thoughtsYamaha four-stroke 225 vs Evinrude E-TEC 225?. New Suzuki Outboards for sale at Laguna Boating Centre in Noosa on the Sunshine coast. Evinrude ETEC over 4 stroke for me. 28kw) Competitor Products. You probably already know the difference between 2-stroke and 4-stroke oils, but just in case you don’t, 2-stroke oil is mixed with the fuel and lubricates the engine while being burned, and 4-stroke oil stays in the crankcase. He gives some great insight into the benefits of the Evinrude E-TEC’s version of the 2 stroke engine. Keep all of your lawn equipment, motorcycles, watercraft or ATVs running smoothly with one of these 2-stroke engine oils. If a piston moves 2 times in the cylinder, that means, engine is known as two stroke engine and if it moves 4 times in a four stroke engine. Having already purchased a 3. People tend to make generalizations about these two types of outboards. Which is Better, a 2 Stroke or 4 Stroke Engine. This isn't necessarily true. BRAKE POWER It is the actual power which is coming on crankshaft after friction power losses. Yamaha’s F25 has gone through a redesign so transformative, it’s now the lightest 25-horsepower outboard on the water—two stroke or four stroke. Comparison between 2 and 4-Stroke Engines for a 30 kW Range Extender theoretical comparison with the well assessed 4-Stroke unit. 4 Stroke Outboard Motors: What Buyers Should Know. 411MarineCom Eco Friendly Marine ReCycling 2-5 Day Delivery Will Ship Priority Mail, Unless We Deem A More Efficient / Secure Service. It's a 2018 Honda 40 hp tiller. We have other parts coming in daily. Mercury,60 HP EFI 4 Stroke command thrust,60 HP EFI 4 stroke command thrust,Mercury 60 HP EFI 4 stroke command thrust outboard motor. This is an older motor, but it appears to have Low Hours. Excellent in snowmobiles, motorcycles, PWC, ATVs and jet boats. These compact outboard motors take you to the fun, the fish, or whatever floats your boat – quickly and reliably. Continuing the lineup is Suzuki’s 9. By the 1940’s, there were dozens of outboard motor companies manufacturing mainly 2-stroke outboard motors. 5 The Suzuki DF2. Mercury Racing since 1999. Compatible with mechanical controls or digital Command Link Plus ® or Helm Master. 2 strokes are awesome. Cruise around town at 35mph while maintaining 150mpg average. 4-Cycle Leaf Blowers November 5, 2015 November 5, 2015 by Tom Mueller If you've been doing any sort of research on leaf blowers, you've probably come across some with 2-cycle engines and some with 4-cycle engines, also called 2-stroke and 4 stroke engines. This is because in Australia, the 2-stroke option is no longer available. Two-stroke engines have certain advantages. Output far beyond its size Put amazing power in the palm of your hand. Hence a four-stroke outboard should be the preferred choice. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. It follows the recent trend of many next-gen four-strokes to shed some pounds and get lighter on the transom. Opinions please. Best Answer: Easy. You mix gas in a 2-stroke. torque, Evinrude E-TEC leaves 4-stroke rivals dead in the water. All contents of this website apply to the continental U. They are quiet but the 2 stroke is a work horse and a proven design. A few years ago, we did a lot of two-stroke versus 4-stroke theme stories. The 4 strokes have made leaks and bounds in recent years. 5hp single cylinder 4 stroke, the compact Suzuki 4hp, the easy to transport 6hp Suzuki outboard. I just have one query. The four stroke motors are generally better on fuel, aren't as noisy and you don't have the exhaust fumes and of course no mixing of oil in the fuel. In this post I am going to tell you about the difference between two stroke and four stroke engines. , can last for a lifetime. As time has gone by the simplicity of these motors has diminished as the technology advanced. Merc/tohatsu 25hp needs a weight loss program at around 160lbs. Just as we covered in the 125 2-stroke vs. Analysis of the Underwater Emissions from Outboard Engines i Abstract The development of Environmentally Adapted Lubricants (EALs) and their use has been gaining momentum over the last decade. correspond to the same values of brake power. 4 stoke power comparison. As with that guide, we talked with those who ride at MotoSport to get their thoughts and opinions on the 250 2-stroke vs. Best thing about 2 stroke is storing for long periods is no problem and heaps less moving parts than 4 stroke. Discussions like this go all the way back to when the 4 stroke outboard was introduced to compete with the two stroke outboards, it's nothing new. Amazing that the weight is very close to the 2006 Yamaha 50HP 2 stroke on my current RIB. First the torque can be calculated by dynamometer and it is given by. If the outboard motor’s serial number plate contains the CE mark in the lower left-hand corner, the 75/90/115 EFI 4-Stroke 2 4. No idea about the drive train setup you referred to. Both 2-stroke and 4-stroke gas models are available. 2 strokes are on a quick decline in sales world wide. Looks - if it was up to me, every outboard would have the "alien" Pro Max cowling with the wicked air scoops on the sides. Also with a class-leading power-to-weight ratio, it is considerably larger in displacement than Yamaha's previous generation 3. Evinrude E-TEC G2 150 H. A 4-stroke engine will compress the fuel air mixture prior to the gas explosion in the first 2 strokes with the following 2 strokes pushing out the burnt gases out of the exhaust. Here is a video of a Evinrude 150 G2 HO outperforming a Yamaha 200. For this reason it is used in lawn mowers, chain saws, small automobiles, motorcycles, and outboard marine engines. I think the 4 stroke would be more efficient with less maintenance but while talking with a salesmen yesterday, he said the Merc was just as efficient and more reliable. In reality, 2-strokes make about 50% more power than a 4-stroke of the same engine size because they are less efficient and because the design requires less stress on the motor (ie. The 4-S Diesel and the 2-S GDI engine are compared. however, i still don't like the 'ringing' noise at 1500rpm, something to do with shims, or lack of them apparently. [13] Note that a given crankshaft configuration begets a different firing order for a two-stroke application from that which it dictates in the four-stroke case, and vice versa. A naturally aspirated 4-stroke cannot be tuned to provide the same performance at as broad an rpm band as the 2-stroke. Feel the Extreme. The third instalment of our ground-breaking outboard engine testing program sees Mercury's Optimax 200 go head to head with E-TEC, Yamaha* and Suzuki. California has too much crap in the gas eg: ethanol and who knows what else that four strokes crap out if the gas is not fresh. 000000000000000000000002 sense CR. They produce more power and more compact than the four-stroke engine and they are lightweight and less costly. In the following report, the other edge that the 4 stroke had was on noise. To that end, we have employed outside-the box thinking, cutting edge technology, and refined designs to develop a line of four-stroke outboard motors unmatched by the competition. Four-stroke vs DFI two-stroke engines The Tohatsu M50D2 fuel-injected two-stroke outboard motor is my choice as a successor to the old Johnson 50 and 55 engines. These engines also do not require pre-mixing of fuel and oil, as. 0HP 4-stroke outboard, and the Mercury 3. NASA Astrophysics Data System (ADS) Williams, Gabriel J. Attempts were made to build non-diesel 4-stroke engines, but as there is no cylinder head, the bad location of the valves and the spark plug makes them inefficient. Earlier in the Engines section we saw how 4 stroke & 2 stroke engines work ! We might like to give a thought on which is better one OR which has more advantages. 2015-03-01. Keep all of your lawn equipment, motorcycles, watercraft or ATVs running smoothly with one of these 2-stroke engine oils. 4 stroke advantages--smooth, long lasting, quiet at low-mid speeds, resale 2 stroke advantages--faster acceleration and top end (usually), slightly lower cost, very little maintenance Fuel mileage advantages: I'm not so sure either has an advantage on the other, as 4 stroke oil changes offset the cost of outboard motor oil. Page 1 of 2 - 70-90 hp four stroke outboard - posted in General Discussion: I am looking to upgrade my outboard on my 17 center console fishing boat. Not only are they enviromentally unfriendly they wear out long before a 4 stroke even begins to lose enough power to be noticed. High-performance 2-stroke oil with an emphasis on exhaust power valves. Yamaha Boat Engine New Models Available in 20HP 25 HP and 30 Horse Power Outboard Motors List. CFD Analysis of 2-Stroke Engines calibration and for a comparison with the 2-Stroke engine. A common belief is that a fourstroke outboard has more power than the two-stroke variety. Evinrude always appreciate connecting with our customers and want to help answer questions and take feedbackn. One power stroke for every two revolutions of the crankshaft. It is incredibly economical on gas. Some recent tests run comparing 2002 model two-cycle DFI outboards with four-cycle outboards of equal power rating, mounted on the same boat, would seem to indicate such things are really possible. Evinrude E-TEC G2 150 H. Find outboard engine specs, special financing, accessories, and Honda Outboard Motor dealers near you. It follows the recent trend of many next-gen four-strokes to shed some pounds and get lighter on the transom. Keep all of your lawn equipment, motorcycles, watercraft or ATVs running smoothly with one of these 2-stroke engine oils. Of the topics that keep popping up on the Montgomery Listserver, the choice of outboard motors for Montgomery boats may be the most frequently discussed. 2-strokes are easier for new nitro modelers to operate. A single overhead cam configuration and long-stroke design increase torque for. Serial # 6E5 L 36250. Power Buying. 2 stroke vs 4 stroke comparison. According to Wikipedia, A two-stroke (or two-cycle) engine is a type of internal combustion engine which completes a power cycle with two strokes (up and down movements) of the piston during only one crankshaft revolution. High-performance 2-stroke oil with an emphasis on exhaust power valves. Available in tiller steer only from 3. The piston in a 4 stroke engine makes four strokes that drive the crankshaft. Cruise around town at 35mph while maintaining 150mpg average. 5-350hp brand new and genuine Yamaha F90,Suzuki DF90 and Honda BF90 90 boat engines. After you narrow down a selection of what you feel will work best for you, we need to look at each brand and compare models. The new 150 Four-Stroke is designed, built, and tested to be the most reliable and durable 150 on the planet. COMPARISON BETWEEN TWO STROKE AND FOUR STROKE ENGINES Four stroke engine Two stroke engine 1. So the only additional maintenance I do is once a year to my current 4 stroke is to change the. The basic and main difference between two stroke and four stroke engine is that the crankshaft complete one revolution in one power stroke in 2 stroke engine and complete two revolution in one power stroke in four stroke engine. They have near iden. Welcome to our shop online to choose the engine you want. And 4-stroke motors do not release oil directly into the water. Evinrude Outboards are available in two distinct ranges. You mix gas in a 2-stroke. In this market, if the dealer won't accomodate requests for engine options, find another dealer. help in driving out the exhaust gases. Although there were some 4-stroke outboards being manufactured, it was not until 1962 that Homelite introduced a commercially successful 55 horsepower 4-stroke outboard motor. Another benefit of a 4-stroke engine is the extra torque it provides. Here’s an easy way to learn the difference between the two major types of outboard – 2-stroke and 4-stroke – and understand how they generate power to turn the propeller. 2 strokes are just too noisy as compared to a 4 stoke. Truth is, in my opinion it is something you'd want to evaluate on a case-by-case basis. The new 150 Four-Stroke is designed, built, and tested to be the most reliable and durable 150 on the planet. Full useful life testing was conducted on the large outboards and. They produce more power and more compact than the four-stroke engine and they are lightweight and less costly. No matter whether you end up with a two-stroke or four-stroke outboard motor, or an electric or propane outboard motor, the fact is you will have a motor that is vastly improved over those of years past. Find helpful customer reviews and review ratings for Mercury 2. Which 2 stroke vs 4 stroke) is better for resale,performance and reliability. The spark plugs fire only once every other revolution, and power is produced every 4-strokes of the piston. Hi, I am a student in college and I am conducting a research assignment for a technical reporting class about 2-stroke and 4-stroke engines. If someone's into water sports, going with the next smaller size 2 stroke ETEC HO or XS Pro is a good value option because 2 strokes are so strong in acceleration. the 2 cylinder, carburated, magneto ignition, 50:1 tank mixed, bullet proof outboard that set the standard for reliability and endurance is gone. The ONLY correct comparison of 2 strokes with 4 strokes is that a 2 stroke can (in theory) produce twice the power of a 4 stroke for the same sized engine and the same revs. The added maintenance claims of 4-strokes, by Evinrude is overstated, in my opinion. Myth 6 " 4-stroke outboards are quieter than new DI 2-stroke engines. One way manufacturers are reducing 4-stroke weight is on the cranks and midsections, Senger says. 2 Stroke vs 4 Stroke Outboard Motors With all of the New Orleans fishing and fishing out of Venice LA , just about everyone in Louisiana has a boat. 8-liter F200 weighs 119 pounds less than a 3. Best Answer: Easy. If the outboard motor’s serial number plate contains the CE mark in the lower left-hand corner, the 75/90/115 EFI 4-Stroke 2 4. TOHATSU 50 HP 2-STROKE 50 HP vs HONDA 60 HP 4-STROKE 60 HP. Outboard motors tend to evolve at the pace of the Nile crocodile, which dates to the early Pleistocene and has minimal updates for the 2019 model year. That's with 4 to 8 people and stuff on board. Outboard engines typically come in two varieties: two-stroke and four-stroke. A 4 stroke engine has valves, belts, and for a couple of yeas now, lots of electronics. The new Evinrude portable 4 strokes have a lot to offer anyone looking for the best small engine. On the other hand, some fuel goes wasted in a two-stroke engine, decreasing its efficiency. 3-litre V8 F350, but it remains a more complete power option for most outboard buyers. While this article was originally authored with a specific view towards two-stroke personal watercraft oils, we consider the info to be very current and well written … it is “highly recommended reading” for any vintage two-stroke owner. Otherwise the 2 stroke beat it in Fuel Economy, Acceleartion, Mid Range Power, and Top Speed. Evinrude outboard engines were ranked "Highest in Customer Satisfaction with Two-Stroke Outboard Engines in the U. One power stroke for each revolution of the crankshaft. 2-STROKE VS 4-STROKE. A two-stroke engine fires every time the piston moves up and down once, while a four-stroke engine fires once very two strokes. 5-350hp brand new and genuine Yamaha F90,Suzuki DF90 and Honda BF90 90 boat engines. But the 115 is very taming and keeps us from going bazerks on the water. Since a 2 stroke has twice as many firing strokes per 1000 revs than a 4 stroke but each power stroke is less efficient, the two have quite different power characteristics. More pleasant operating experience. In the following report, the other edge that the 4 stroke had was on noise. More Power: Evinrude outboard engines produce up to 25% more torque than four-stroke engines. The exhaust manifolds, for example, reside in the valley of the engine instead of outboard, while the intake is outboard of the engine. Two-stroke engines deliver more power for their size than weed eaters with 4-stroke engines; they are also more difficult to start than 4-stroke engines. It looks to have all Original Parts and to have never been taken apart. What is the difference between a 2 Stroke Engine and a 4 Stroke Engine? The differences can be seen in the number of strokes each piston takes, and their structure. I started using these motors on one of my boats back in 2004. Comparison of 2 Stroke vs 4 Stroke Engine. FISHOS have more choice than ever before when it comes to outboards. Which means that in dual-motor installations it can be mounted on the same 26-inch centers, using the same bolt holes, as older Yamaha two-stroke motors. Here are some similar current listings you might be interested in. In simple words, stroke is the distance of cylinder between piston moves. To replace an inboard/outboard motor would be much more costly. Feel the Extreme. In 1985, Outboard Marine Corporation (OMC), parent company of Evinrude and Johnson, released a new carbureted 3. Hi all, I'm about to buy my first new boat package and have to choose an outboard (150HP). Small portable 4 stroke outboards and a full range of direct fuel injected ETEC outboards. During the past decade outboard engines have grown dramatically in size, popularity, and reliability, with technological advancements so important that the once-settled two-stroke versus four-stroke debate has been re-opened, alternative fuel outboards have become a viable option, and significant benefits like joystick steering are now a consideration. Everytime the piston goes down on a 2 stroke, it is a power stroke. 2 stroke oil would also be an easy target for high taxation in the future to force them off the market. They detail the comparison of Weight, Acceleration, Top Speed, Fuel consumption at idle and at various speeds including WOT. The new Yamaha F25 four stroke is the modernday answer to the demise of the traditional two-stroke carby outboard. They are not the same. A 2 stroke engine IN THEORY is more powerful than a 4 stroke engine, but (again, IN THEORY) creates more pollution (it burns oil with the gas). Whether or not the addition of 50-80lbs translates into more power will ultimately depend on actual field tests. Whilst 4-strokes make a power stroke every other revolution of the crankshaft, Evinrude E-TEC makes a power stroke every revolution. Comparison between 2 and 4-Stroke Engines for a 30 kW Range Extender theoretical comparison with the well assessed 4-Stroke unit. And 4-stroke motors do not release oil directly into the water. Two-stroke engines often have a high power-to-weight ratio, power being available in a narrow range of rotational speeds called the "power band". Merc maintenance is super easy. It will barely plane one person in a dinghy, something the 5HP did with ease. The third instalment of our ground-breaking outboard engine testing program sees Mercury's Optimax 200 go head to head with E-TEC, Yamaha* and Suzuki. Honda Marine Outboard Motors. Lately though I have been thinking back to the old days where we had 150 hp motors pushing 24 ft boats that were much heavier than they are now, so my interest in the new Mercury 150 4 stroke was peaked. the comparison between 2 stroke vs 4 stroke today should be about performance, cost , weight, noise, polution and which technology will meet future evironmental restrictions better. A few years ago, Yamaha's flagship 350-hp outboard and the 300-hp version of it were based on eight-cylinder blocks. I have decided to definately get a yammy as the more reputable boat shop in town sells them. 4 strokes are ok. 2 stroke vs. Compatible with mechanical controls or digital Command Link Plus ® or Helm Master. Clean Used 1987 Yamaha 115 HP V4 2 Stroke 20" Outboard Motor. Yamaha's F300 might appear less glamorous than the engineering tour-de-force that is the 5. In fact, the 4 stroke has more torque off the line than the Merc and will go about 2 mi/hr faster top end. Because Yamaha wants to answer the needs of as many users as possible with reliable outboard motors capable of meeting the demands of the harshest use conditions and environments, we continue to provide a full lineup of 2-stroke models in Enduro and kerosene-fuel specs alongside our 4-stroke lineup. Keep all of your lawn equipment, motorcycles, watercraft or ATVs running smoothly with one of these 2-stroke engine oils. The new 150 Four-Stroke is designed, built, and tested to be the most reliable and durable 150 on the planet. When Thomas Ansorg went looking for a second-hand boat he could use as a 'workhorse' out on Great Barrier Island, he knew he needed something tough and rugged. 2 stroke outboard rpm. The new Evinrude portable 4 strokes have a lot to offer anyone looking for the best small engine. To replace an inboard/outboard motor would be much more costly. Yamaha 115 4 stroke i've got a 90hp Opti as well, built around the same 1. With many news in technology, performance and look. haven't you been able to read that 4 strokes are the one with the great lubrication system?. I'm really not sure what all goes into the maintenance on a four stroke. A two stroke has way more bottom end than a 4 stroke. 5 hp 4-Stroke,Tiller, Light weight - only 30 lbs. One power stroke for every two revolutions of the crankshaft. The following are the major differences between the 2 stroke and the 4 stroke engines. Offers Outboard Tech Prop & Rigging information across the Outboard range Portable Two Stroke 2 - 15HP. 2 strokes do generally generate more power with less weight. Re: 2 stroke thread (with occasional F1 relevance!) Post by J. 2-Stroke vs 4-stroke Engine Preference Survey. Mid Range Two Stroke 25 - 90HP. Choose your boat. correspond to the same values of brake power. Offers Outboard Tech Prop & Rigging information across the Outboard range Portable Two Stroke 2 - 15HP. Lately though I have been thinking back to the old days where we had 150 hp motors pushing 24 ft boats that were much heavier than they are now, so my interest in the new Mercury 150 4 stroke was peaked. a new 4 stroke will not need fuel mixing and will outlast most 2 strokes. Otherwise it starts reasonably easily and for a 4-stroke, it's reasonably light weight. Very smooth and relatively quiet w the FG cover. In a 2-stroke engine, it takes one full revolution (2 stages) to complete 1 power stroke. A little better gearing than you mentioned. MID-RANGE 25-100HP. I have been running Yamaha 4 stroke oil 10w-30 but I want to switch to a fully synthetic. Following is a summary of my digging. 4 inches narrower than the V6. Noise may not be such an issue on a smaller 2 stroke. Outboard by itself the Verado definitely weighs more than current motors. and best-in-class power-to-weight ratio of the E-TEC Jet Series provides excellent shallow-water performance, unprecedented maneuverability and quiet operation. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. The newer generation of two-stroke outboard engines are equipped with direct fuel injection technology which reduces the engines’ emission level to meet the requirement of the Outboard Emissions Law. 6 liters and was rated at 275 horsepower. Welcome to our shop online to choose the engine you want. 25hp 4 stroke efi suzuki 136lbs/25hp 2 stroke suzuki is around 115-120lbs so it's within 15 to 20lbs compared to yrs ago. I've had the 2. 2-litre V6 more than 100kg lighter in weight, but it also costs a massive £7,000 less to buy - and if you need a multiple rig, that will make an. I am in the market for a 90 HP Mercury outboard motor. Single cylinder four-stroke 6hp portable outboard motors are unique in the recreational boating world. Evinrude How 2-Stroke and 4-Stroke Outboards Work 2018 Many boaters do not know exactly how an outboard engine works. Information about PARSUN outboards and engines. Both engines use significantly less fuel than a traditional two-stroke 200hp outboard. The following are the major differences between the 2 stroke and the 4 stroke engines. I'm not sold on Yami 4 strokes over 4 hp. Mercury 150 4 Stroke Outboard. The lightest DOHC outboard in its class, this I-4 is the perfect, lightweight 200-hp solution for small- to medium-size boats. I have been running Yamaha 4 stroke oil 10w-30 but I want to switch to a fully synthetic. Both engines use significantly less fuel than a traditional two-stroke 200hp outboard. 2 L V-6 Powerhead. Boat Engine Comparison. packaged with a 25 HP Mercury 4-Stroke outboard. 4-stroke outboards are approximately 90% cleaner than typical 2-strokes. Now, this proven 2-stroke lineup has a new look. *4 stroke engines cost around 20 to 50% more than a same HP 2 stroke *4 strokes are more expensive to maintain *4 strokes are not ideal for pulling a skier up, better power to weight ratio is needed in comparison to a 2 stroke * 4 strokes also pollute the water to a certain extent but a *great* deal less than 2 strokes. It is (GENERALLY) easier/cheaper to maintain/service a 2-stroke, but a 4-stroke is (GENERALLY) more reliable and requires less maintenance. California has too much crap in the gas eg: ethanol and who knows what else that four strokes crap out if the gas is not fresh. , can last for a lifetime. Yamaha Boat Engine New Models Available in 20HP 25 HP and 30 Horse Power Outboard Motors List. A few years ago, Yamaha's flagship 350-hp outboard and the 300-hp version of it were based on eight-cylinder blocks.