106 stroker kits & 106 big bore kits separate or combined | Victory Motorcycles: Motorcycle Forums

106 stroker kits & 106 big bore kits separate or combined

Discussion in 'Victory General Discussion' started by kingpinbob, Jan 6, 2013.

  1. kingpinbob

    kingpinbob New Member

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    Can anyone fill me on the pros & cons of each, as separate 106 installs or combined to create a 114 monster. Thanks much,Kingpin Bob.
     
  2. vision_nut

    vision_nut Moderator Staff Member Moderator

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  3. Vicbuilder

    Vicbuilder Well-Known Member

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    Bore kits are less expensive because of less parts and labor. You can have 104", 107" from bore on a 2007.
    Stroke kits can get expensive because the crank is expensive, and there is a lot more labor. You can have a 106" with a stroker crank on a 2007, or a 110", or 114" with a stroker crank and bore in a 2007.

    Bore and compression are the low hanging fruit, so generally the bigger the motor, the more power. How much do you want it to make, or how much are you willing to spend? That will help determine your build.
     
  4. Half_Crazy

    Half_Crazy Well-Known Member

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    If I had it to do over again, I would never have stroked this motor. The stroker uses shorter connecting rods and lowers the rod to stroke ratio, The stroker motor is also undersquare (more stroke than bore).

    The bigger bore not only unshouds the valves but gives more piston area for combustion to push on. The engine is oversquare and has a higher rod ratio, which gives the engine a really rev-happy character.

    I bored the 100" by 2mm for a 104" engine. It made 120 HP and 130 ft-lbs... with 106 ft-lbs by 2200 rpm.
    Then I stroked that motor to 110". It now makes 126/134. All that money for 6 horse and 4 ft-lbs?


    Do the 109" all bore motor w/.495 cams, some basic headwork,11:1 compression, Thor pipe, TTI intake, rev extend, PC-III, and a good dyno tune.You'd like to have a Kingpin that'll lay down 11.50s thru the 1/4 mile, wouldn't ya?


    For what it's worth, that's my advice.
     
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  5. kingpinbob

    kingpinbob New Member

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    Thank you Half crazy for the info I was looking for!!! Yes 11.5s would be the ticket!!! 109 it is. Kingpin Bob.
     
  6. Vicbuilder

    Vicbuilder Well-Known Member

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    A 109" is only intended for the 08 and newer. The 2007's go to 107". You can order a 109" but the pistons would have to milled down to make the correct compression on a 2007 motor.
     
  7. Half_Crazy

    Half_Crazy Well-Known Member

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    I saw apair of Weisco 105.5mm 11:1 pistons for my motor at Lloydz. I remember they were very light. It can be done.

    Isn't the only difference in the engines less squish in the heads? Like 11:1 pistons make 10.5:1 in a 2008 and up?When you say "correct compression" what does that mean?
     
  8. Vicbuilder

    Vicbuilder Well-Known Member

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    The timing edge is different from the 107 pistons to the 109 pistons. Like you said you can make a 109 from a 2007, but that is not how they are retailed. So if you called Lloyd and ordered a 109 kit and never told him it was for a 2007 when it went together the piston would hit the head. Mill it down and it'll be fine, but now you've added extra time, money, and complexity to the build. Lastly a 109 piston milled to fit a 2007 motor will be milled down to it's minimum thickness, so no NOS or boost.
     
  9. Half_Crazy

    Half_Crazy Well-Known Member

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    I have to wonder ifWeisco would make us a pair of the 105.5mm, 11:1 pistons for the 2006/2007 motor.
     
  10. Vicbuilder

    Vicbuilder Well-Known Member

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    Wiseco will make whatever you want if you have the time and money!

    A milled piston 109 will come in at 11:1 on a 2007 motor, so again it can be done - but that is not how Lloyd typically retails a kit for a 2007 motor.

    I went throught this whole runaround this summer on a blown-up 107 in a 2006 Hammer. We had to go 109 to avoid resleeving, so it can be done. It is just easier to buy his 107 package - the correct one for a 2007 motor. His 107" for the 2002-2007 motors comes in at about 11:1 right out of the box. Easy and effective.
     
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  11. PrometheusVII

    PrometheusVII Member

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    With the performance encrease from this kind of build, most folks shouldn't need/want NOS or boost. Great advice from both Vicbuilder and Half_Crazy. That's why I love this site.
     
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  12. Vicbuilder

    Vicbuilder Well-Known Member

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    You've never met a majority of my customers apparently!!! LOL!
     
  13. Vicbuilder

    Vicbuilder Well-Known Member

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    Waaaiiiiiit a minute! This coming from a guy with a 116 with Nitrous and getting a supercharger! NICE - see what I mean!
     
  14. PrometheusVII

    PrometheusVII Member

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    Guilty as charged. I did say a most folks. Obviously most of your customers and I do not fall into that demographic...
     
  15. victory_wayne

    victory_wayne Active Member

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    wow
     

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