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Thread: Two and Four Stroke Engines

  1. #46
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    check google for some truly gargantuan marine diesel two strokes, pistons bigger than your kitchen. As for bikes there used to be a 750 that was known as "the widowmaker" awesome power without matching handling. I think it was a Kawasaki.

  2. #47
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    Last edited by Sniper; 25th November 2004 at 06:03. Reason: Deleting
    To every man upon this earth
    Death cometh sooner or late
    And how can a man die better
    Than facing fearful odds
    For the ashes of his fathers
    And the temples of his Gods

  3. #48
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    Quote Originally Posted by speedpro
    CR600, mates got one at home. Stupid machine
    To every man upon this earth
    Death cometh sooner or late
    And how can a man die better
    Than facing fearful odds
    For the ashes of his fathers
    And the temples of his Gods

  4. #49
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    The Kawasaki was the H2 750 air-cooled triple. It was truly ahead of it’s time powerwise, but sadly lacking in chassis advancement.

    Suzuki, Kawasaki & Yamaha raced in F750 class & has the TR, KR & TZ750 respectively. The TZ was later & a watercooled reed valve 4 cylinder & wiped the floor with the triples.

    Suzuki released the GT 750 (water cooled) but decided not to capitalise on its racing successes & launched it as a fat tourer.

    The rotary (Suzuki RE5) is not a 2 stroke, but can sound similar. Yamaha had one but it did not go into production, as did DKW I think.

    A little later both Yam & Suzuki tried to capture the race replica but followed the 500cc path (the F750 class defunct by now as too powerful) & produced the RZ & RG500 respectively. This time it was Yamaha that was more conservative & weighted the bike down with all sorts of gudubins whereas the Suzuki (disc valve induction) was the raver of the two.

    As Jim rightly mentions the reputation for being less ‘torquey’ is mythical. Until recently all trials bikes (well ½ way decent ones) were 2 strokes & produced wide spaced power. The recent change to 4 strokes & both Trials & other Dirt factions is purely legislative. (Will be unable to sell a new 2 stroke in the US soon). Manufacturers are desperately trying to match the weight & power outputs with their new 4 stroke machines & the only way they can compete is by making them bigger capacity, which usually makes them heavier so reliability is now being stretched to achieve weight saving.

    All in all poxy tree hugging legislators have killed the 2 stroke despite the fact that such small engines used occasionally are such a tiny drop in the ocean.
    Don't you look at my accountant.
    He's the only one I've got.

  5. #50
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    and on tother end of the spectrum, the smallest 4 stroke engine.

    >Weighing slightly more than 6 lbs. (clutch included), Robin's EH025 is the >world's lightest 4-stroke engine. Meeting all CARB Tier II regulations, the >EH025 is the smallest single-cylinder, 4-stroke, 1.2-hp. engine in its class. >The air-cooled, OHV, gasoline engine uses only half the fuel of a >conventional 2-stroke engine, and its exhaust gas runs cleaner, emitting >less total hydrocarbons. Like a 2-stroke engine, the EH025 is also capable of >multi-position operation

  6. #51
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    Very useful, wait until those legislators decide 1.2hp is all we realllly need.
    Don't you look at my accountant.
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  7. #52
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    Quote Originally Posted by Dr Bob
    and on tother end of the spectrum, the smallest 4 stroke engine.
    >EH025 is the smallest single-cylinder, 4-stroke, 1.2-hp. engine in its class. Like a 2-stroke engine, the EH025 is also capable of >multi-position operation
    the 025 is 1.1... the 035 is 1.6
    http://www.robinamerica.com/engines/...so?Class=Micro
    need to stroke it!

    I wonder what they sound like????.... better than the old 2 stroke tools!
    might have to put one on a skateboard or something

  8. #53
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    Wouldn't even make a good lawnmower.
    Don't you look at my accountant.
    He's the only one I've got.

  9. #54
    King Kenny said - 'they don't pay me enough to ride this thing.' or words to that effect.Only used the once to clinch his title,took some balls to ride.
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    In and out of jobs, running free
    Waging war with society

  10. #55
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    For those that don’t understand, they put a TZ750 engine in a dirt tracker as the XS650 based bikes weren’t really making a dent in the Harley dirt trackers.

    Apparently they handled real bad but were so fast it didn’t matter.
    Don't you look at my accountant.
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  11. #56
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    Early Saabs were 2 stroke and they cleaned up European rally's for quite a while.
    Although that could have been down to crazies like Carlsen driving them.
    Lou

  12. #57
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    Quote Originally Posted by aff-man
    don't know of any 2-smokes bigger that 500cc does anyone else?????
    Suzuki and Kawasaki both made 750cc two strokes in the 70s. The Suzuki in particular was very good touring machine in its day, while the Kwaka was a straight out blaster.

  13. #58
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    Quote Originally Posted by Jantar
    Suzuki and Kawasaki both made 750cc two strokes in the 70s. The Suzuki in particular was very good touring machine in its day, while the Kwaka was a straight out blaster.
    Damn, I've just seen one of those KR750s, I want one

  14. #59
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    Has anyone mentioned the uniflow diesel yet? Supercharged (some are turbocharged as well), two stroke, 4 valves per cylinder, pressure lubricated crankshaft - eg GM 6V71, in fact every GM diesel, or Nissan UD. Or this: http://home.online.no/~psvhanse/Fram...zer/Sulzer.htm
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  15. #60
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    How about the Conley V8?
    3.5hp from the non-supercharged version!



    They also have a working Viper V10...


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