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Thread: The XB4R build begins...

  1. #1
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    So here is the blast that we will be using the cases from:


    and the XB frame(swingarm not pictured):


    The blast being stripped down:


    Test fitting the swing arm:


    Thanks to Bossanova for the wheels and squidbuellie for many of the other parts, aaron914 for the primary cover and a backup ecm. I will be putting the new primary cover on today, and then srat tearing the motor down when I get all the parts in.

    I will update the further along I get.

  2. #2
    good luck!! cant wait to see what it will look like when its done!! btw, why is it a xb4r? the blast is a 500 so shouldnt it be a xb5r lol? :D

  3. #3
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    A blast is actually 492, it is an xb9 engine with just on cylinder. The bore and stroke are the exact same. And xb9 is 984cc and is called a 9 so I figure xb4 was fitting. Although this blast engine is not being left stock as the only thing that will be used is the engine cases. I can't wait to get it done. Hopefully within a moth it will be done.

  4. #4
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    Definitely keeping an eye on this build.

  5. #5
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    First thought that came to me when I saw the title was inline 4 in a buell. XB4R

  6. #6
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    XB4.5RR :D

  7. #7
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    Cool. Looking forward to seeing the finished product.

  8. #8
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    So far I have the primary cover on, swing arm on, once I have all engine parts that will go on. I ordered new fittings for the oil line so I can hook them up. If I can find an xb9 piston to use, I will be putting a big bore kit in this bad boy. From what I can tell so far, this bike will be lighter than a stock blast and have more power even without the big bore kit. This blast engine is easy to pick up on my own.

  9. #9
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    You gonna give the piston back after your done with it?? :D props for the build

  10. #10
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    Haha, I meant if I can't find a piston I will do a big bore. Lol the only way to buy a new piston is to buy a cylinder and piston together which is about $230 plus the gaskets and rings or a big bore kit with everything for like $350.



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