Running two front heads on a 100ci Victory 2009 engine | Victory Motorcycles: Motorcycle Forums

Running two front heads on a 100ci Victory 2009 engine

Discussion in 'Tech Q&A' started by agusta74, Jun 7, 2021.

  1. agusta74

    agusta74 Member

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    Odd question... has anyone ever looked into the possibility of running two front heads on a 2009 100ci engine? Looking at them I can't see many issues... The rear exhaust header would clear but might need a custom made fabricated aluminium bend made to fit on the rear head to make fitting the pipe easier and better looking angle. The internal oil feeds look to be in the same place (if they are the round hole). Is the oil return to the sump that curved slot? If so I could use two front barrels also... I would need to make custom throttle bodies and have a computer that could cope with two separate throttle bodies... but those small issues can all be overcome.... frame clearance is not an issue as I am planning on building my own frame for the engine... thoughts? What have I missed??? Are the valve cutaways on the pistons "handed" for inlet and exhaust valves? Then I would need a front piston also?
     

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  2. wvrider1

    wvrider1 Well-Known Member

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    I would call Rylan @ The Vic Shop. 515-319-4313. He knows these engines. Everyone says he is a good guy to talk to.
     
  3. Chattanooga_Mark

    Chattanooga_Mark Well-Known Member

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    What would be the reason to use two front heads instead of one front and one rear head? What are you wanting to achieve and why?

    Can it be done? Sure, with enough time, money and effort a lot of things can be done. But why? Just so it looks different? Have at it. It could be a fun project.
     
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  4. jmstang302

    jmstang302 Well-Known Member

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    165929723-no-yelling-gettyimages.jpg
     
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  5. agusta74

    agusta74 Member

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    Well from helpful responses on a couple of facebook Victory pages it seem it "can" be done. I have not found anyone who has tried it so I might be the first. One interesting thing is that apparently I can use a front head on the rear cylinder AND keep the rear cam... but turn the rockers 180 around to the correct set of valves and hence keep the engines original cam timing and as a bonus I can change to hotter cams without having to buy two sets to get two fronts. I will use separate throttle bodies (which Victory does anyone, they are just in a common housing) One TPS and of course the injectors stay the same so it real will be a relativity simple conversion. Engine mounts being at the front of the heads does not bother me as I am planning on fitting the engine in a Egli backbone frame that I will build to suit. One question that is still outstanding is if the piston valve cutaways are symmetrical or "handed" which is am easy fix if they are... just use a front barrel with it's piston on the rear also.
     
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  6. agusta74

    agusta74 Member

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    lol if you guys freaked out that the heads idea... imagine what you will say when I tell you what I am going to do with the oil cooler.... :)
     
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  7. Chattanooga_Mark

    Chattanooga_Mark Well-Known Member

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    Love your tag line!
     
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  8. lou8700

    lou8700 Well-Known Member

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    Not freaked out but don't see the point of reinventing a perfectly balanced wheel. What is your goal, HP gain or unique look? Looking forward to seeing your progress, goodluck!
     
  9. agusta74

    agusta74 Member

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    I am planing to building a special with Egli backbone frame and I wanted to have both exhaust pipes to the front for the style of exhaust I want.
     
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  10. agusta74

    agusta74 Member

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    plus I like a challenge! :)
     
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  11. md2420

    md2420 Well-Known Member

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    Had to look up what an Egli frame was. Interesting! 8E2E4A61-08FA-488C-8855-87C81DCD6619.jpeg
     
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  12. BP6666VR

    BP6666VR Well-Known Member

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    Build threads are always welcome here and we can help with solutions

    There was 1 guy who striped the whole wiring to a few essential functions, also he had a 200 tire up front, beautiful build , paint, bike .... From UK
     
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  13. normthenomad

    normthenomad Well-Known Member

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    Glad too see ingenuity and inventiveness thrive.
    I'm guessing that you took into account that a Vic engine/trans package weighs about 250#.
    Surprises me so few people haven't tried some serious combinations with these bikes.
    Personally I'd like to trim about 2/3s of the wiring out .
    Don't need a fuel light, neutral light, self cancelling turn signals, (or turn signals) or oil pressure light, might run a gauge for the oil, don't need kick stand safety switch or an indicator for what gear I'm in. Damn sure don't need or want a stereo.
    Many a mile with kickstart only, no idiot lights and a toggle for high beams.
    Really looking forward to seeing how you progress.
     
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  14. BP6666VR

    BP6666VR Well-Known Member

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  15. jmstang302

    jmstang302 Well-Known Member

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    I'll take this when you take it off
     
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