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Thread: Prop question

  1. #1

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    Prop question

    I am going to purchase the "green" SC impeller and was looking for some opinion's on a few things.
    My current mods are below, and right about now my RPM's are at 8050-8100 consistantly. So when I install the new SC impeller I imagine I'll be all over the rev limiter. I know I can tweak my 14/19r to accomodate the new impeller and bring my RPM's down a little, however would it not be best to upgrade to a different prop? If so which one? I am not sure with my current mods that I'll have the power to turn a better prop. I imagine I would need to go to 42lb injectors as well?
    I do not plan on adding a ECU or aftermarket IC (I say that now ) so I am just trying to determine what options would make the most sense.


  2. #2

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    I don' know, but I am waiting to see answers. GH just put a RR SC impeller in mine and I have the same mods as you (except for the water box mod) and I am on the limiter fairly hard. But it is still cool water and cool air when I have tested. I want to test on a warmer day before repitching or going to a 15/20 and having to depitch it. I managed to see a best of 73 MPH so far though.

  3. #3

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    same here. Water is still damn cold - 49F as of this past monday. Air temp is mid seventies so I'll give it a few weeks and see if I am still at the same RPM's. I could not really do an accurate speed reading as it was fairly choppy. It has been the only time I have been out this year.

  4. #4
    JFizzleJR's Avatar
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    42# injectors are not necessary with the stock intercooler.
    You should re-pitch your 14/19 after adding the SC wheel IMO unless you add an external IC.

  5. #5

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    I guess the question is would a depitched 15/20 perform better than an up pitched 14/19?

  6. #6
    Moderator The Bandit's Avatar
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    Quote Originally Posted by Ultra/RXP View Post
    I guess the question is would a depitched 15/20 perform better than an up pitched 14/19?
    IF by perform, you mean faster....yes

  7. #7
    ou812's Avatar
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    Quote Originally Posted by Ultra/RXP View Post
    I guess the question is would a depitched 15/20 perform better than an up pitched 14/19?
    get a 13/18 3 blade & don't look back!

  8. #8
    Quote Originally Posted by ou812 View Post
    get a 13/18 3 blade & don't look back!
    can he turn a 3 blade with his mods?

  9. #9
    ou812's Avatar
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    Quote Originally Posted by Dark_viper42 View Post
    can he turn a 3 blade with his mods?
    a 13/18...yes, it's a stock/stg 1 prop. I got 8140 rpm with the basic stage 1 mods @ mid 71's. 8020rpm with the stock grate & 8140rpm with the riva grate.

    The 15/19r is a different story.

  10. #10

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    thanks guys for the input. helpful as always. So basically until I add an external IC the stock injectors are fine. Plan to do both initially, but will go with the SC impeller first and go from there, meaning probably go with the prop recommended here. Only thing that sucks is the 14/19r was literally just installed. Has only 2-3 hrs on it.

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