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  1. #1

    x-charger, xs IC, fuel needs, prop= same hole shot

    If you have a 04-07 RXP and add a X-Charger (or maybe a Riva Pro Series X-Charger), XS Inter Cooler, 42lb inj., RRFPR and a prop (15/20-22) would it have the same hole shot as a X Boat?


  2. #2
    SeaGoat's Avatar
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    All things being equal, the X boat still has a bigger pump tunnel and can process the water faster thus it should have a slight edge on holeshot.

  3. #3
    JFizzleJR's Avatar
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    Quote Originally Posted by SeaGoat View Post
    All things being equal, the X boat still has a bigger pump tunnel and can process the water faster thus it should have a slight edge on holeshot.
    This is true. And on top speed a stock RXP-X vs. an RXP with those mods will be about 10 mph faster

  4. #4
    R88ory RXP's Avatar
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    I have basicaly those mods, (look at my sig) I have raced a rxp-x rs It was a touch quicker out of the hole but mid and top speed it did not stand a chance. This was in the sea which was quite choppy and im prob 50kg heavyer than my pal that was on the X. R88

  5. #5
    R88ory RXP's Avatar
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    Also holeshot is alot in the prop. My pitch is 13/21 from my understanding the front edge of the prop controls hole shot and the rear edge controls WOT rpm as a general rule. As you can see my front edge is quite steep therefore giving me good holeshot but I maybe loseing a little uptop. My Pal has a stock class CC boat that has a 10/21 four blade and he out shots me but not for long as my mid is alot stronger. If you want holeshot tho I would go with a 3 blade with right pitch for your mods. The 3s pull allot harder out of the hole and mid but prob 2-3 mph slower uptop. All depends on what you want and what you riding style is. R88

  6. #6
    can the pump tunnel and 87mm x nozzle be swapped as well?

  7. #7
    mtrager's Avatar
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    Quote Originally Posted by DooSPX View Post
    If you have a 04-07 RXP and add a X-Charger (or maybe a Riva Pro Series X-Charger), XS Inter Cooler, 42lb inj., RRFPR and a prop (15/20-22) would it have the same hole shot as a X Boat?
    While you are instaling X parts, do not forget the X prop. I am running
    the setup you are going to . X- prop has worked great for me.

  8. #8
    mtrager's Avatar
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    Quote Originally Posted by DooSPX View Post
    can the pump tunnel and 87mm x nozzle be swapped as well?
    Keep your 83 nozzel.

    Can not switch pump tunnel.

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