View Poll Results: How much RPM will we gain with e85 tuning?

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  1. #1
    GasResearch-VT.SE's Avatar
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    I'm not one to normally hype before results... BUT.... (E85)

    We are testing e85 on a Spark with the following mods:

    -Solas 17 prop (Not pitched)
    -Riva SS wear ring
    -e85 pump fuel
    -Ride plate trued
    -Sponsons max raised
    -Ribbon delete

    Everything else is stock.

    Rev up video:



    Using 8900 as base limiter.

    We are hoping for 300 RPM gain, but this is a "wish" rpm gain.
    Our other wish is 100 km/h / 60 mp/h on a stockish spark.

    Current RPM on salt fluctuate between 8040-8080.
    If we get 8200+ just from fuel change, I'll be happy.
    8300+ and I might have to try some of that ethanol in a beverage!


  2. #2
    GasResearch-VT.SE's Avatar
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    We will also test if there is any "heat fade" like on normal pump fuel.

  3. #3
    is thinking. grantuk's Avatar
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    I am very keen to see any evidence of 58+ GPS mph on a non-turbo Spark.

    Has anyone GPS'd a Spark yet with 'all' of the bolt ons available plus a good tune?

  4. #4
    I have every bolt on And my spark is tuned. But I can't get prop right. Either it jumps off the line or it doesn't and top end never any higher than 51

    I have air intake
    Riva water box
    Worx rear exit
    Worx sponsons
    Vtech 402
    Ss wear ring
    Skat prop

  5. #5
    is thinking. grantuk's Avatar
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    Quote Originally Posted by 9198 View Post
    I have every bolt on And my spark is tuned. But I can't get prop right. Either it jumps off the line or it doesn't and top end never any higher than 51

    I have air intake
    Riva water box
    Worx rear exit
    Worx sponsons
    Vtech 402
    Ss wear ring
    Skat prop
    How many RPM's are you turning?

    My bone stock ski averages 51.5mph GPS over 3 runs on a lake.

    Traditionally Skat props are better for bottom/mid and Solas better for top end. But either will need to be pitched for the right RPM's.

    Also, not sure if the rideplate (R&D or Worx) will offer any increase yet?

  6. #6
    GasResearch-VT.SE's Avatar
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    Do the ride plate mod

  7. #7
    is thinking. grantuk's Avatar
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    Quote Originally Posted by GasResearch-VT.SE View Post
    Do the ride plate mod
    Mod the stock one? How?

  8. #8
    GasResearch-VT.SE's Avatar
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    Search. It should be in 2nd page

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  10. #10
    is thinking. grantuk's Avatar
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    Quote Originally Posted by GasResearch-VT.SE View Post
    Thanks, got any pics?

    I am worried how it may affect the handling for racing

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