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  1. #1

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    What Octane Should I Run

    going to be taking out the 785 i bought over the winter for the first time .i checked the compression and it shows 160lb across the board . i can defianitly smell the racing fuel thats left in the tank . boat pretty much has everything you can get in one sidedraft 46 novi's ,reed tippers ,hotseat head , hotseat pipes ,some case porting ,randy 4 cdi ,gas exhaust valves, ported cylinders and more . what do you guys think . i could change the domes but i don't want to lose any performance .


  2. #2

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    I'm not going to guarantee it, but I've run VP c-12 in some seriously worked sled engines (9500-10,000rpms), and never really needed more. I think C-12 is good to up around 14:1 CR, anything above that you might wanna try C-14, but it takes one hell of an engine to burn it.

    Did ya get any info as far as what brand and fuel was run in it before? I'm assuming no.

  3. #3

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    anybody else ???

    Redline ,
    where did you buy it from .
    thanks

  4. #4
    Polarisracer166's Avatar
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    Fuel

    Bob, That boat was setup to run on VP MotorSport 103 or VP MotorSport109.

    I would see if you can find some VP C12. You will have a better chance to find a Leaded fuel... Call me if you have any questions. Currently I'm running ProFuel Mark 5

  5. #5

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    yeah i remember something about the 103 , i wasn't listening to much i was still in shock of the deal i was getting .i just wanted to get it out of there before he changed his mind . thanks

  6. #6
    Water Bum Rodneyae's Avatar
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    turbo blue!!!! Great stuff, not sure how it dose in two stroke skis, but it dose wonders on a turbo car running 30 psi of boost!!!!

  7. #7
    Polarisracer166's Avatar
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    Fuel

    I just looked at my notes... Bobby ran VP MS103 at the TN nationals. He cut it with VP HTG fuel... I looked at the VP website and it looks like they don't offer it anymore... If you can find some VP Fuel go with C12 or MS103..

    Turbo Blue WILL run like shit in that boat. My SS boat that ran 850 rpms less and 1.5mph slower that a ProFuel or VP fuel... The boat was a complete turd...
    My supercharged camaro did run better on Turbo Blue then 94 fuel from the pump. When I tried some C12 it was a totally new car.. Car ran 12.9 @ 112 with Turbo Blue and with C12 it ran 12.4 @ 116 both done on the same day 15 min apart..

  8. #8

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    Another option would be Rocketbrand 111 if ya wanna give it a try. I think i'm gonna get a barrel and see how I like it.

    Supposedly the guys that make Rocketbrand used to do all of Phillips race fuels....and I used to run and like Phillips B-33

    I can get a barrel of VP c-12 for $460 and a barrel of RB 111 for $299

  9. #9
    Connecticut CrazyA's Avatar
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    I remember Jay from Atlantic talking very highly of the Rocketbrand as well.


    .

  10. #10

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    i'm gonna try the Rocketbrand this weekend, i can go get it at the local gas station .Redline how many gallons is that for the 460.00 .
    thanks
    Last edited by 785 lugs; 05-24-2007 at 06:44 PM.

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