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bpost
Anybody using the new Evinrude E3 two stroke motors. I am looking in the 100 HP class. Four strokes are heavy and expensive to fix. It seems the new two sroke DFI engines are a lot more fuel efficent than in the past and have 4 strokes beat in the power and torque curve.

How does Mercury stack up?
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Comments

7 comments

Date Votes
  • bandit44
    I have one of the new E Tec's if thats what you are talking about? Seems to purr right now as it is new. Only time will tell. What sold me was the cost of maintance of the 4 stroke. Being a 2 stroke I was told no service for 3 years. No break in, just crank it up and haul azz. Well only some things a fool will do, me not 1.

    bandit44
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  • SCorvers
    Bombardier seems to have hit it right with the E-Tec. A whole lot simpler and less maintenance intensive than the 4- joke....I mean 4-strokes.
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  • buddyb
    Whats the maintenance on 4 strokes? I know they would need oil changes but what else that a 2 stroke wouldnt need? I am asking because I am in the market for a new 40 HP outboard and a boat with a Honda was on the lake last week and it was so quite you could hardly hear it run.
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  • Warpig883
    After having a 4 stroke boat motor I will NEVER own another two stroke.

    SUPER fuel milage, ZERO maintenance (other than oil change), quiter, smoother

    The 40 hp Merc two stroke used 6 gallons per hour, the 80 hp Yamaha four stroke usesless than half that and does EVERYTHING faster quieter and smoother.
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  • Cutiegirlracing
    The fuel injected two strokes don't suffer from the poor fuel economy and poor emissions that it's carburated counterparts do. This is due to fact that the fuel injection doesn't inject the fuel until the piston is past the exhaust ports.
    In a carburated engine the fuel comes into the intake ports while the exhaust ports are still open a portion of the fuel mixture escapes out of the exhaust ports before they are close. Fuel is loss, that didn't have a chance to burn to make power and the loss fuel leaves the motor out the exhaust contributing to poor emissions and fuel economy.
    The trade off for fuel injection is a slightly less top end or top speed.

    Two stokes have less parts and are lighter, Every stroke is a power stroke making greater power. It also makes them much faster reving. A two stroke takes to modifications very well. Spend a grand in a two stroke and a grand in a four stroke and the two stroke will have double the power power where as a four stroke may have 10 to 25 percent more. Since the oil is in the fuel in a two stroke you don't have to worry about an oil pick up. A two stroke can run upside down, sideways, etc. without worries of oiling. Two strokes have less moving parts, less to go wrong and maintain.
    A four stroke has to use every other stroke to exhaust it gases, this is a stroke it's not making power. It has more parts so it's heavier. The more parts make it more complicated to rebuild.

    I've races two strokes for years and have come to love the two stroke. Even though the two stroke are dying out. I think they will make a come back. They can make two strokes with about the same emission and fuel economy as four stroke, but alot more power. It's just going to take a company to put the effort into it.
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  • tsr1965
    That new E-Tec has as good or better emmissions than most 4-strokes. I have had a couple 4-strokes, both Merc. Big Foots. They have Yamaha power heads on them. They run smoothe, and quiet, and to my knowledge, the only maintenance needed is the oil change. Yes they are heavier than the 2-stroke, but such is life.
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  • fugawe
    Depends on what you are putting it on. On a go-faster boat the 2 stroke has the best power for the weight. On a pontoon a 4 stroke is the only way to go. It is quieter, more fuel efficient at low rpm's, and will idle all day without complaining. My two Hondas(35hp and 2hp) get crazy fuel mileage. I have never burned an entire tank(6 gal) in one day in the 35. It takes about 45 minutes a year to do all of the maintenance, which is oil change, valve adjustment, carb sync and lower unit oil change. The money I spend on 2 quarts of oil and a filter doesn't even come close to what you'll spend on oil for a 2 stroke.
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