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| I know a bit about the difference between the 2's and the 4's but why the dramatic SIZE difference? What I know is the exhaust is underwater, they're quieter, the oil is not mixed in with the fuel. What else am I missing?? Thanks. I am looking at buying a Yamaha 25 4 stroke. |
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Posts: 166
Location: Gurnee, Illinois | Although the size of 4 stroke outboards is getting smaller than the first one's to come out, you still need extra space for things like an oil sump (oil in crankcase), cam shaft, oil filter, oil filler, etc. 2 strokes don't have these items. Yamaha and Suzuki have done a great job on decreasing the size and weight of there 4 strokes.
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Posts: 561
Location: Monee, Illinois | I three years you wont be able to get a two stroke |
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Posts: 166
Location: Gurnee, Illinois | I wouldn't count Evinrude out of the 2 stroke game. Their ETEC motors are cleaner than some 4 strokes.
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Posts: 63
| Just bought a 50 honda as a replacement for my 45 Mariner, love it, did a little reserch on them before the buy (four stroke in that hp range) and found the hondas to be the lightest. friend of mine that a guide in the Hayward area has been running them down 7 years and loves them. Also big thing,I'm getting three trips fishing, were I only got one trip before on the same amount of gas. |
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| The Honda 50 tiller model I put on was actually lighter than the Merc 2-stroke it replaced. That is a fine engine indeed and it is smaller than the Merc 60 2-stroke. I had a "problem" with this setup - I thought my gas gauge was broken becasue it indicated full forever (I took a 1 gal reserve tank along). It sips the fuel and with a full 23 gallons of gas that I can put in my inboard tank - it seems to last forever. IMHO the enormous hours of experience, engineering and emissions control is superior to the FICT, ETEC or any 2-stroke. The achilles heel of any 2-stroke is that the gas & oil run down the same track. THe 4-strokes use parallel paths. If a mutiple cylinder 2-stroke has a fuel flow failure to one cylinder it is running metal on metal in that dry cylinder - chances are high that the cylinder and therefore engine is destroyed or repairable with a several thousand dollar price tag. Whereas a fuel flow failure to one cylinder of a muliple cylinder 4-stroke is a non-problem. Other than it doesn't produce full horsepower and possibly run rough. That lesson cost me $5,000. I noticed Honda won an award for customer satisfaction last year.
Weight is the enemy in aircraft design and there is a very sound reason that FAA production licensed aircraft rely on the heavier 4-stroke technology-never 2-strokes(e.g., optimax/Etec) - to keep their pilots and passsengers safe and those pricey aircraft aloft. Honda 4 stroke is a simple design and is superb. (BTW- I have no vested interest in this product or Manufacturer - just a muskie angler who wants to fish w/o mechanical headaches) |
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Posts: 1335
Location: Chicago, Beverly | How much did that 2 stroke you had weigh? That honda is at 220 solid, not sure I've seen a 2 stroke much more then 190-200 in that hp range. except the etec which has fuel injection and a built in oil resevoir.. and the emissions thing? epa certified those results on the etec, it is cleaner then majority of 4 strokes |
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4 stroke question