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  1. #1
    JT jpt7779's Avatar
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    Intercooler water pressure TEST: with and with-out Groco strainer


    Weather awesome: 68-72 degrees, Baro Press 30.00, Humidity 14%, Dew Point 21 degrees, RAD 1285, HP 102%

    From another Intercooler thread there were comments about water pressure with and with out a Groco strainer. So I set out to find the results for myself with a stock IC configuration.

    The picture shows the T-fitting and gauge used right before and inline with the lower IC intake.

    I went through an entire tank of fuel and another ¼ tank testing this and a new V-Tech tune.

    Ski: 2010 RXT-X 260 with stock pump, 87mm venturi, 8800 rpm, 81.5 mph.

    Results

    Groco strainer installed in-line to T-fitting and IC, NO 90 degree bends, freshly cleaned

    RPM 5000 – 5 psi
    RPM 7000 – 10 psi
    RPM 8000 – 15 psi
    RPM 8800 – 18 psi

    NO strainer – straight from iBR connection to T-fitting and IC

    RPM 5000 – 5 psi
    RPM 7000 – 10 psi
    RPM 8000 – 15 psi
    RPM 8800 – 18 psi

    The bottom line is I saw NO difference that I could read on the gauge while running at speed! I will try and get a 50 psi gauge that may help reading more detail. I also will see if there is any difference at all with a 83mm venturi vice the 87mm used today.

    With a stock IC configuration and a Groco strainer there appears to be no issue at all with pressure loss. Maybe with the really high pressure, high efficiency IC’s being used and tested, there may a drop in pressure from a clean Groco strainer. Clearly at this level of mods, I just didn’t see any difference!


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  2. #2
    TDR's Avatar
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    Good write up!

  3. #3
    Banned User
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    Very informative, thank you.

  4. #4
    Moderator beerdart's Avatar
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    Thanks for the testing.
    Maybe the differences your are seeing is I think the FL boys testing is using a Yamaha pump. The Doo pump is more of a high volume low PSI compared to the Yamaha low volume high PSI pump for the cooling loop.

  5. #5
    Moderator beerdart's Avatar
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    Thanks for the testing.
    Maybe the differences your seeing is I think the FL boys testing is using a Yamaha pump. The Doo pump is more of a high volume low PSI compared to the Yamaha low volume high PSI pump for the cooling loop.

  6. #6
    stuckmoto's Avatar
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    Thanks! I was wondering what the PSI was off the pump.
    Last edited by stuckmoto; 10-18-2012 at 05:31 PM. Reason: dbl post

  7. #7
    stuckmoto's Avatar
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    Any more issues with oil leaks? <--- side topic

  8. #8
    shrabber's Avatar
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    Very Nice thanbks for the Info

  9. #9
    Duke's Avatar
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    Thats strange due to the fact Vsec1 and I just tested the groco strainers on his ski and saw close to a 50% drop with strainer installed verses removed.

    Not questioning yor data but simply don't understand what we are doing so differently.

  10. #10
    Fast & Loud meeper's Avatar
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    Quote Originally Posted by Duke View Post
    Not questioning yor data but simply don't understand what we are doing so differently.
    something right....

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