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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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  #1  
Old 30th September 2009
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Default Buell intake manifold

Is there any reason an intake manifold from a Buell Firebolt Lightning XB9S won't bolt up to a rigid Sportster engine?

I imagine it should fit just fine if the the rubber mount intakes fit, right?
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  #2  
Old 30th September 2009
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You do realize the XB intake runs vertically, right? And that it uses a throttlebody instead of a carb? To clarify, the XB intake runs straight up to the airbox (where most fast tanks are) because XBs have fuel in the frame and the frame runs where a sidedraft intake, e.g. Sportster style, would mount.
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  #3  
Old 30th September 2009
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That's part of what I was trying to figure out. I thought they ran up at an angle and not straight up.

Thanks.
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Old 30th September 2009
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Quote:
Originally Posted by jrwca View Post
That's part of what I was trying to figure out. I thought they ran up at an angle and not straight up.

Thanks.
Buell relocated the fuel tank in order to run that system. What you see on the XB series that looks like a fuel tank is nothing but a plastic air-box cover. The ACTUAL fuel tank is the structure inside the frame (i.e. they FRAME is the fuel tank).

Now that said, I suspect the XR EFI intake may be similar, and that is what necessitated the new air intake for the XR (but there are tank differences on the XR as well).
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Old 30th September 2009
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would be very difficult to run an XB injection system on a Sporty as it would hit the fuel tank big time!
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  #6  
Old 30th September 2009
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Yeah, for some reason I was thinking it was at an angle which I wouldn't mind working with. But straight up is a problem.

I'm going to look at the X1 stuff.
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Old 30th September 2009
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Are you trying to fuel inject your bike or what?
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Default

That's the idea. I've been toying with the idea for a few years now. I have a few things planned for my bike and it's going to require a rewire. I want to make sure I think of everything I might need to allow the swap to FI later.
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Just pick up all the parts from an X1 or '99-'02 S3T and weld an O2 bung into your header. Besides the wiring and ECMspy programming, it's pretty much a straight-forward swap in a solidmount sporty.
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