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Thread: Rxt prop help

  1. #1
    cfratt's Avatar
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    Rxt prop help

    I want to run a RR wheel and 2mm spacer and was wondering what prop i should be running, right now i am at 8150 Rpm on stock prop with stock supercharger, 68 with XS Intercooler.


  2. #2

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    14/19 w/ an 82 ring and slight pitch added to trailing edge got my GTX to 72 at 8100 w/ no cavitation and RIPPED through the mid range-- I was very impressed. The stocker impellers can be tweeked to give same or very sim peak speed, but the bottom end snap and mid range pull will not be there-- my experience after multiple impeller tweeks and changes. For a stock machine the stock impeller was very good. If you don't run the nozzle ring it is not the end of the world-- it helped with the very minimul cavitation from an idle and helped bring the RPM down slightly.

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    cfratt's Avatar
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    With the rt sc? And what other mods did you have, I would love to have nice holeshot and miss like you takes about.

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    Site Admin Green Hulk's Avatar
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    As Jim said, the 14/19R on the RXT works great with that level of boost you will be running

    Don't forget the greenhulk coupon code saves you 10% off the listed price
    http://www.4-tecperformance.com/inde...products_id=11

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    cfratt's Avatar
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    would a 15/20 prop work with a few mm taken down to inprove rpm? would this give to the same power and pull in midrange as the 14/19?

  6. #6
    monaroman76's Avatar
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    The 15/20 will work fine, but you will need to remove some pitch as you stated. It is probably a better option as it leaves you more room to tweak the prop if you do more mods down the track.

  7. #7

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    Quote Originally Posted by cfratt View Post
    With the rt sc? And what other mods did you have, I would love to have nice holeshot and miss like you takes about.
    My ski is an 03 GTX 185 with an 04 GTX 185 motor, x charger with 17 tooth gear, XS intercooler, RXP ecu w/ harness and RXP FPR w/ the 5/16" line from tank to rail, 42 lb. injectors, 05 RXT drive shaft setup so that I could use the 159 impellers, 160 degree thermo, 82 nozzle ring, STOCK intake grate, CAI, ride plate holes are not filled. I tried a stock 255 impeller which would be close to a 15/20 and my machine turned into a TURD-- it would not pull it-- it felt so poor that I did not even consider repitching.

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