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  1. #1
    alex29573's Avatar
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    Anyone running 9.5CR pistons with reflash and pump gas?

    What charger, rpms and boost are you running? 93 octane?


  2. #2
    shrabber's Avatar
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    Oops triburion Is Rxpx6 too doel is around 18 lbs boost on a rude3 I know Frank is a et 140 around the 8800 range last Time we spoke.

  3. #3
    alex29573's Avatar
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    Just straight 93 pump fuel?

    No octane boosters, 50/50 mixes, av gas?

  4. #4
    shrabber's Avatar
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    Straight Pump.

  5. #5
    GPRXP vspec1's Avatar
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    Quote Originally Posted by alex29573 View Post
    Just straight 93 pump fuel?

    No octane boosters, 50/50 mixes, av gas?
    You have to be careful who's reflash it is....Some are very hot (lots of timing) and some are ok for pump gas and high compression. I personally just run straight AV gas, I just dont trust the fuel quality in Florida anymore. Ethanol content is upwards of 18 to 22% now...

    We have been lucky at our local airport....AV gas has been $5.10-$5.50 a gallon.

    I run a old ET 68/140 at 9,000 rpms on CP 9.5's depending on the air it will make 16-18lbs

  6. #6
    Duke's Avatar
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    Risky IMO not knowing what timing your running in the actual map and what kind of fuel your getting at the Fl pump. Some ICs run much better AITs which makes a huge difference as well.

  7. #7
    alex29573's Avatar
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    Wouldnt a higher ethanol content be better for a high compression/racing setup?

    E85 is supposed ti be ~85% ethanol

    I always check my afrs everytime i go out and can adjust fuel pressure if the readings are off for some reason

  8. #8
    Having Fun jp1300r's Avatar
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    Quote Originally Posted by alex29573 View Post
    Wouldnt a higher ethanol content be better for a high compression/racing setup?

    E85 is supposed ti be ~85% ethanol

    I always check my afrs everytime i go out and can adjust fuel pressure if the readings are off for some reason
    E85 is another thing. Will need injectors, E85 map. You need to make sure its really E85. The pump E85 seems to vary a bit.

    The higher the ethanol content the leaner it will be, if you usually run tuned on straight 93 octane(non-ethanol). It only take a split second to damage piston.

  9. #9
    imp0ster's Avatar
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    I shot for very low 11s and high 10s on e85. Energy potential in it is great but good gawd do you burn through a tank FAST. You'll need a high output and reliable pump too.

  10. #10
    rxpdoo's Avatar
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    Quote Originally Posted by jp1300r View Post
    Quote Originally Posted by alex29573 View Post
    wouldnt a higher ethanol content be better for a high compression/racing setup?

    E85 is supposed ti be ~85% ethanol

    i always check my afrs everytime i go out and can adjust fuel pressure if the readings are off for some reason
    e85 is another thing. Will need injectors, e85 map. You need to make sure its really e85. The pump e85 seems to vary a bit.

    The higher the ethanol content the leaner it will be, if you usually run tuned on straight 93 octane(non-ethanol). It only take a split second to damage piston.
    e-85-r will have consistency.

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