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Thread: Anyone ever "retro" their bike after mods?

  1. #11
    Senior Member TeeDoubleUTwoHundred's Avatar
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    I have family in the Lower Mainland, as well as Osooyoos. I want to ride all over B.C., including the Island. By open top jeep, it was amazing. On a TW, it'll be stellar, I'm sure.

    If our schedules meet up, that would be awesome.
    2017 TW200 -> Hand Guards-Chain-Foot Pegs-Skid Plate-Shifter-Grips-Mirrors-Fuel Filter-Fender-Levers

  2. #12
    Senior Member TW_in_BC's Avatar
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    Osoyoos!
    Mt. Kobau on one side...Killpoola lake on the other!
    There's also some nice riding to old mine sites in the Fairview area near Oliver too.

    That was part of our itinerary for Sept 14-21 before my DR bit the big one...
    Last edited by TW_in_BC; 08-29-2019 at 05:05 PM.
    2008 TW200
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  3. #13
    Senior Member Michael Bryce Winnick's Avatar
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    ...or you can just give the pilot a few turns out and get a flex jet and call it done. You lose all the fun of burning your fingers, but you should try it anyway. I can also be a wise guy. I live at 600 feet. I have been tempted to drill and plug the air box lid for a tougher look. Sort of like giving the bike a tattoo.

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  5. #14
    Senior Member TW_in_BC's Avatar
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    I was going to install something like this on the XT225...before someone told me of the trick with drilling holes and using electrical fillers to seal them.

    http://thunderproducts.com/product/total-performance-intake-tpi-valve/
    2008 TW200
    Southwest corner of BC Canada

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  6. #15
    Senior Member FIRE UP's Avatar
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    Ok,
    So, let me get this straight. Yamaha, and all its experience in engine design, testing, racing and a whole lot more, does not or, has not, designed the TW air box to accommodate some altitude change? And you're saying that the opening for air, is not large enough to supply higher altitude air requirements? Believe me, I by far, am not the sharpest tool in the shed for understanding this type of stuff. And, if it needs more air (whatever's available at higher altitudes), what's wrong with just leaving the holes open, when riding at lower altitudes? I mean, there's no such thing as TOO MUCH AIR is there? Just trying to learn here.
    Scott
    Retired SDFD, 30 years,
    2004 Itasca Horizon 36GD CAT C-7 330HP
    2008 Honda GL1800 Goldwing Caliente red
    2007 TW 200 "Blue Noid"
    2115 Jeep JKUR Rubicon
    2011 GMC Sierra 1500 Extended Cab 4x4
    HAM, KI6OND
    Me, the wife and our killer Mini Schnauzer, "Sophie"

  7. #16
    GOF
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    Quote Originally Posted by FIRE UP View Post
    Ok,
    So, let me get this straight. Yamaha, and all its experience in engine design, testing, racing and a whole lot more, does not or, has not, designed the TW air box to accommodate some altitude change? And you're saying that the opening for air, is not large enough to supply higher altitude air requirements? Believe me, I by far, am not the sharpest tool in the shed for understanding this type of stuff. And, if it needs more air (whatever's available at higher altitudes), what's wrong with just leaving the holes open, when riding at lower altitudes? I mean, there's no such thing as TOO MUCH AIR is there? Just trying to learn here.
    Scott
    There is a such thing as too much air for your jetting. The manufacturer, be it Yamaha or any other, has to make compromises. They build to the 'average' user. Then we get to make adjustments for how and where we ride.
    1988 Suzuki Savage
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  8. #17
    Senior Member TW_in_BC's Avatar
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    Quote Originally Posted by FIRE UP View Post
    Ok,
    So, let me get this straight. Yamaha, and all its experience in engine design, testing, racing and a whole lot more, does not or, has not, designed the TW air box to accommodate some altitude change? And you're saying that the opening for air, is not large enough to supply higher altitude air requirements? Believe me, I by far, am not the sharpest tool in the shed for understanding this type of stuff. And, if it needs more air (whatever's available at higher altitudes), what's wrong with just leaving the holes open, when riding at lower altitudes? I mean, there's no such thing as TOO MUCH AIR is there? Just trying to learn here.
    Scott
    I've often wondered about that...the engine will only use as much air as it needs, it's not as if the air is being forced in.
    Can someone with a better understanding of this, please explain?
    2008 TW200
    Southwest corner of BC Canada

    YouTube channel: Hidden Content

  9. #18
    GOF
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    Quote Originally Posted by TW_in_BC View Post
    I've often wondered about that...the engine will only use as much air as it needs, it's not as if the air is being forced in.
    Can someone with a better understanding of this, please explain?
    It has to do with air density. Denser air(sea level) has more oxygen in a given volume than thinner air (mountain tops). It's the same reason mountain climbers carry oxygen bottles to climb Everest.
    1988 Suzuki Savage
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  10. #19
    Senior Member TW_in_BC's Avatar
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    True...but the engine will take as much as it can...ideally to match the volume of the cylinder at BDC.
    The number of holes in an airbox shouldn't matter...in fact, the MORE holes, the better, right? That way the amount of air available to the engine is always at maximum.
    2008 TW200
    Southwest corner of BC Canada

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