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carb measurement

Discussion in 'XJ Technical Chat' started by XJJeff, Jan 31, 2007.

  1. XJJeff

    XJJeff Member

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    Can anyone tell me for sure what the measurement is for the carb (filter side)hole? Is it 52mm (2")?
     
  2. bosozoku

    bosozoku Member

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    What bike?.

    The carb mouth OD of the Hitachis used on the 650 and 750 XJ engines is 50 mm.

    Buying pod filters?.
     
  3. XJJeff

    XJJeff Member

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    1980 XJ650 Maxim. Thinking about it. I know I would have to rejet just not sure I want to go that route.
     
  4. BlueMaxim

    BlueMaxim Active Member

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    Just measured a set I have sitting on my table for a rebuild. 49.97mm as measured with my new electronic caliper! 8)
     
  5. XJJeff

    XJJeff Member

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    thanks BlueMaxim.
     
  6. Leee

    Leee New Member

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    a question for the group, i have heard keeping these bikes stock is advisable.repost your replys, i would like to here some of your opinions on this.
     
  7. RickCoMatic

    RickCoMatic Well-Known Member

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    Stock requires much less "Tweaking and adjusting carb mixtures" to accommodate "Performance parts"
     
  8. Hvnbnd

    Hvnbnd Active Member

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    I kind of feel that when you buy a bike that was engineered and built by a company they endorse the build for safery and performance.

    If you dont like the performance then buy a different bike.

    If you dont feel safe on your stock bike then you should have never bought it in the 1st place.


    I for one feel like if a guy with a slide rule put all this work into building a bike or car or truck that I should not be modifying it to suit my likes unless it's cosmetic.

    I watch kids put that loud exhaust on their cars.... which I happen to like too...but they do it wrong so many times. they cut corners due to cost and lack of resources.

    There is nothing sweeter than the sound of a nice pair of Flowmasters on a 3" dual exhaust, run out the back of a vehicle. But when they turn those pipes out right in front of their tires....... well it looses something. To say nothing about what it does to those back tires the ears of the people in the cabin.

    A sweet machine is something to be proud of and taken care of!

    Just my preference, please dont get upset with me here.

    What if you built the trickest machine, everyone loved it and thought it was all that. Then someone bought it and decided to "improve it"

    Reminds me of the song "Look what they've done to my song ma"
     
  9. BlueMaxim

    BlueMaxim Active Member

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    I don't recommend pod filters. They kill gas mileage and can be quite difficult to get set right. It takes weeks of tuning, pulling the carbs, changing jets and shimming the needles. Most end up with a dead or flat spot somewhere in the power band.
     
  10. BlueMaxim

    BlueMaxim Active Member

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    I don't recommend pod filters. They kill gas mileage and can be quite difficult to get set right. It takes weeks of tuning, pulling the carbs, changing jets and shimming the needles. Most end up with a dead or flat spot somewhere in the power band.
     
  11. RickCoMatic

    RickCoMatic Well-Known Member

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    It's an "Apples and Oranges" affair. Let's not mix-up the early-80's bike with the early 2-thousands four-wheeler.

    The bikes were designed to go the way they arrived in the crate.

    The cars are designed to allow for an endless assortment of aftermarket goodies to be added later. A good deal of the aftermarket is "Bolt-on" speed equipment; but Audio-visual related is huge.

    The performance related products for our bikes are nice but they alter the design and require "compensating-for tuning." Pods, pipes and Jet Kits
    usually require a good measure of experimentation-type tuning.

    As anyone who has been there will tell you ... there's really no easy way to re-jet up-'n-down.

    You'll become very familiar with the screws and clamps holding the rack of carbs on the bike!
     

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