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  #21  
Old 27th November 2021
Iron Mike Iron Mike is offline
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Sportster/Buell Model: xlch
Sportster/Buell Year: 1964
Sportster/Buell Model #2: XLCH IR EFI
Sportster/Buell Year #2: 1971
Other Motorcycle Model: BMW K1200RS
Other Motorcycle Year: 2001
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I’m sure you’ve seen this?

http://www.useasydocs.com/details/dualspark.htm
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  #22  
Old 27th November 2021
gl90hog gl90hog is offline
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Sure did! But I am trying to work with my hardware. I actually can, MS can use dual input from existing twin Tec (working as a sensor only) to provide single spark. Of course the advance curves must be considered, but it can be done via MS software. But the discussion was about precision, and my inputs would be based on the twin notch standard cup. Whether or not this will be good enough for turbo - I don't know!
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  #23  
Old 18th January 2022
t120r t120r is offline
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Quote:
Originally Posted by gl90hog View Post
Sure did! But I am trying to work with my hardware. I actually can, MS can use dual input from existing twin Tec (working as a sensor only) to provide single spark. Of course the advance curves must be considered, but it can be done via MS software. But the discussion was about precision, and my inputs would be based on the twin notch standard cup. Whether or not this will be good enough for turbo - I don't know!
If it helps, I am doing testing on trigger wheels to see what resolution the stock Harley cam wheel will read. With any luck I'll have a 24 tooth wheel tested this weekend. Hammer has told me they can make me their steel replacement trigger wheel with whatever pattern I ask them for.
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  #24  
Old 20th January 2022
gl90hog gl90hog is offline
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It sure helps!
However, I'm totally stuck. I got a Buell XB9-SX throttle body that just won't fit. I don't even know why people imagine it would fit, since on a Buell it sits vertically. On Sportster it could eventually stay horizontally, but it is impossible to fit the right side bolts due to injector housing. How to get around that, does anyone know?? Let aside the fact that throttle cables should run to the left of the body/air filter, which would be weird
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  #25  
Old 20th January 2022
Iron Mike Iron Mike is offline
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Sportster/Buell Model: xlch
Sportster/Buell Year: 1964
Sportster/Buell Model #2: XLCH IR EFI
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I fit two onboard.
When your straying from stock, you have to think outside the box. Your not going to call the dealer and get help from the factory exploded views, you’ll have to be the author on that portion yourself. Perhaps post some pics of where you’ve gotten to this far and maybe we can offer some suggestions.

YOUR ONLY LIMITED TO YOUR IMAGINATION AND YOUR BIllFOLD.
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  #26  
Old 20th January 2022
gl90hog gl90hog is offline
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My bike has about 0.001% original parts on it, and some 80 k miles, so...
Yet those standard Allen bolts can't possibly squeeze in there, are you sure we are talking about the same engine (xl883, 2000) and parts (xb9-sx throttle body)? Maybe different bolts, with VERY slim heads, might fit, and that is my next try, yet it is difficult to get non-standard imperial size fittings over here. I am contemplating the idea of making custom flanges as well
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  #27  
Old 20th January 2022
Iron Mike Iron Mike is offline
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Sportster/Buell Model: xlch
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Sportster/Buell Model #2: XLCH IR EFI
Sportster/Buell Year #2: 1971
Other Motorcycle Model: BMW K1200RS
Other Motorcycle Year: 2001
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Post a pic of your current dilemma with the TB.
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  #28  
Old 21st January 2022
gl90hog gl90hog is offline
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Here's a link to the pics
https://1drv.ms/f/s!Ah8uObZmBzJVhrcMo6ZTncTN0B0FPw
Right side bolts can't fit into that 1 mm clearance, no way, even if I grind them
Also gasoline intake would not allow for hose fitting in there, it needs modifications
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  #29  
Old 22nd January 2022
gl90hog gl90hog is offline
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Could it be because I have the long one piece, for post 2004 models? Pre 2004 models seem to be shorter, and consisting of two parts interconnected with a rubber connector, and that might fit, hopefully?
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  #30  
Old 22nd January 2022
Iron Mike Iron Mike is offline
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Location: Phoenix
Posts: 2,847
Sportster/Buell Model: xlch
Sportster/Buell Year: 1964
Sportster/Buell Model #2: XLCH IR EFI
Sportster/Buell Year #2: 1971
Other Motorcycle Model: BMW K1200RS
Other Motorcycle Year: 2001
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Quote:
Originally Posted by gl90hog View Post
, it needs modifications
You have to make it into what you need it to be.
If it were mine, I would start with a carb intake, cut off the inlet side, machine appropriate mounting surface (use stock Buell TB to man dims). Machine injector bungs to weld into proper position. Modify stock, or manufacture fuel rail with appropriate spread, inj to inj, and mount. Call Barnett, Motion Pro ect. and have them assemble cable with necessary ends and lengths.
See….4 easy steps!

I don’t presume you thought it would be a bolt on?
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