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Thread: 4 stroke death toll....

  1. #16
    300rman's Avatar
    300rman is offline My other user 3WW ID was Nitebiker07. Teaching quads a lesson
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    Quote Originally Posted by The Goat View Post
    I was thinking chromoly as I typed that actually. But even still...the difference in weight between a 250r and a 450r engine can't be that damned much. can it?
    thats because they have cut down on the sizes of parts to make them lighter, sacrificing reliability for weight loss. and even after all that R&D, the 250R motor is still lighter.

  2. #17
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    well i was thinking of the difference in weight between the 350x and the 300r...honestly it's maybe 10-15 pounds.

    lol...kasey that piston is amusing. I'm sure it could be made to be reliable though, nothing like the old honda aircooled motors...but still.

  3. #18
    WaimakRydah's Avatar
    WaimakRydah is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    This is why my last bikes have all been air cooled low maintanance 4 strokes
    1985 Honda ATC200S
    1994 Kawasaki Eliminator EL250


  4. #19
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    its nto that its the fact that they are pullign every ounce of reliable performance and if the new 4 strokes are maintained properly they will last but they are much higher strung than the older thumpers of yesterday. but its allpersonal preferance but i have started a revolution her elocaly with goign back to the 2 strokers.
    ok here goes, 85 atc70,2 84 atc70's 83 alt50,83 atc110 , 70 us 90 parot green, 85/86 350x garage queen, stock rider 85 350x, project 85 350x 85 250r drag bike, 2 85 250sx's, alt185, , scat tracker?99blaster,85 250r rider,85 250r ice racer project ,93 kx500,99 xr200r, 91 dr250s ,89 lt500 quadzilla,88 lt250quadracer, 88 trx250r race full on race quad,, 01 yamahakodiak400, kawaki kd100,lt50 for my doughters,93 300ex, 230 quadsport, lt185, lt250 quadrunner,84200s, is that enough?

  5. #20
    3leggeddog's Avatar
    3leggeddog is offline The sun shines on a dogs ass every now and then Got the holeshot
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    well type what you will,believe what you want.i've had em both.My 250r's got rebuilt 3-4 times a season.i've rebuilt my 450r once in that time span.never lost a bit of performance,or puffed any smoke.a 4 stroke can be reliable.
    Full Walsh CRF 450 hybrid 250r

  6. #21
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    To even compaire your stock motor to Chad Reeds motor is well . Yeah is isn't the iron horse XR 400 motor of yester year, neither is the power, that you rode till the valves were cooked. I welcome the new 4stroke..my 01' 426 has a ton of miles and other than the valve check it has needed nothing. If the motor needed to be freshened I couldn't tell. I don't ride like a pro and I don't run it down the road wide open at all. I think I've topped it out one time and hit the rev limiter once in a swapping wipeout. I'll rebuild it eventually but I'm biding time. Due to the price I may just go big bore with an Athena or Ice Cube block. Bigger is better right?

  7. #22
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    well i run my 450's liek a 2 stroke wound tight and on the rev limiter constantly and was rebuilfing th3e 450's abotu 3-4 times a season. and i have gernaded my 05 450r on mor ethan one occasion. i ble wup my first 2 stroke in abotu 10 years over the weekend but thats because i grabed the wrong gas can and had the timing adbvanced toofar on the drag bike its a whole diffrent story.
    ok here goes, 85 atc70,2 84 atc70's 83 alt50,83 atc110 , 70 us 90 parot green, 85/86 350x garage queen, stock rider 85 350x, project 85 350x 85 250r drag bike, 2 85 250sx's, alt185, , scat tracker?99blaster,85 250r rider,85 250r ice racer project ,93 kx500,99 xr200r, 91 dr250s ,89 lt500 quadzilla,88 lt250quadracer, 88 trx250r race full on race quad,, 01 yamahakodiak400, kawaki kd100,lt50 for my doughters,93 300ex, 230 quadsport, lt185, lt250 quadrunner,84200s, is that enough?

  8. #23
    300rman's Avatar
    300rman is offline My other user 3WW ID was Nitebiker07. Teaching quads a lesson
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    like i said earlier. i have no doubt these motors will last if you are nice to them.
    but its obvious they simply CANNOT stand up to major abuse and high-rpms like a 2 stroke can.

  9. #24
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    its nto really that its allabotu simlicity your comparign 20 year old 2 stroke tecnolegy to modern 4 stroke tech now if you compare modern 2 stroke tech liek the 03's and newer its pretty damn close pound for pound of relibility.
    ok here goes, 85 atc70,2 84 atc70's 83 alt50,83 atc110 , 70 us 90 parot green, 85/86 350x garage queen, stock rider 85 350x, project 85 350x 85 250r drag bike, 2 85 250sx's, alt185, , scat tracker?99blaster,85 250r rider,85 250r ice racer project ,93 kx500,99 xr200r, 91 dr250s ,89 lt500 quadzilla,88 lt250quadracer, 88 trx250r race full on race quad,, 01 yamahakodiak400, kawaki kd100,lt50 for my doughters,93 300ex, 230 quadsport, lt185, lt250 quadrunner,84200s, is that enough?

  10. #25
    300rman's Avatar
    300rman is offline My other user 3WW ID was Nitebiker07. Teaching quads a lesson
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    Quote Originally Posted by brapp View Post
    its nto really that its allabotu simlicity your comparign 20 year old 2 stroke tecnolegy to modern 4 stroke tech now if you compare modern 2 stroke tech liek the 03's and newer its pretty damn close pound for pound of relibility.
    02 was when honda switched to the new motor design. too bad they didnt stick with it and get the bugs worked out of it, it would have been a formidable motor.

    but i havent heard that they were any more reliable than the previous design.

    too bad they didnt put as much R+D into the 2 stroke motors period. they were pretty much unchanged from the time they went to waterpumpers till 02. Obviously, much more power than a modded 250 dirtbike is useless anywhere but sand/drags or if you are a really big guy. i am talking R+D into getting wider, smoother powerbands without sacrificing that high-end scream. if they did that, the 2 stroke motors would still be "IN"

    my lil ol 250 has WAY more power than my buddies 450. but his is more prone to power-wheelies and is usually faster in a drag.
    BUT, his doesnt mar up the ground, where mine leaves a 2 inch deep trench every time i touch the throttle because the power s down.

    On the road, with street tires, the two fiddy would win every time. but those knobbies dont hold traction even on the road...we tried....shifting second or third hard makes a wheel spinning-slide sideways, scary problem where his holds the road and just goes.

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