pump or race fuel for nos
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pump or race fuel for nos

  1. #1
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    Default pump or race fuel for nos

    I am putting a sniper tunnel ram with fogger system and 2 gary Williams 800 carbs on my 10.5 comp. 565, getting 200 & 300 hp jets,the 200 now intill I freshen it and clearance rings for nos. I run 93 octane in it, should I run a higher octane through the fogger? I now have a reher-morrison victor intake and 1050 Williams domionator and and pull a A hi-helix stainless imp. 5500 rpm, does anyone think the tunnel ram will help my setup?
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    Senior Member Deweydaddy's Avatar
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    Quote Originally Posted by eric tx20 View Post
    I am putting a sniper tunnel ram with fogger system and 2 gary Williams 800 carbs on my 10.5 comp. 565, getting 200 & 300 hp jets,the 200 now intill I freshen it and clearance rings for nos. I run 93 octane in it, should I run a higher octane through the fogger? I now have a reher-morrison victor intake and 1050 Williams domionator and and pull a A hi-helix stainless imp. 5500 rpm, does anyone think the tunnel ram will help my setup?
    Well, your first question was pump or race fuel with nos.....I ran a dedicated fuel pump when I was on nos.....along with a digital timing retard system ......all on pump gas....200-400 big shot kit used....
    I’d rather live with a good question than a bad answer.
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    Senior Member Lildave's Avatar
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    A lot of guys run a dedicated fuel system for the fuel side of the n2o with a 1-2gal cell holding the race fuel of your choice. Run the boat on 93 and spray race fuel with the n2o.
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    Member BaddBullitt's Avatar
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    You should have no issues running with 93. Mind you some C16 is always nice too...
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    Quote Originally Posted by Deweydaddy View Post
    Well, your first question was pump or race fuel with nos.....I ran a dedicated fuel pump when I was on nos.....along with a digital timing retard system ......all on pump gas....200-400 big shot kit used....
    X2 on the dedicated system the last thing you want is to go lean. If you don't sooner or later you'll wish you had!!!


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    91 octane and a 200 shot would be ok if you are taking 15* out. No timing you are not going to make power that's why you take it out and bring it in slowly. Don't run over 200hp on pump gas you are asking for detonation problems. To fat is not good either. Fuel pressure is very important. Go with a 10 jet spread no2 more gas less. There is not a no2 page here but go to yellow bullet and read up there is a lot of info there on no2.
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    mo balls than $cents$ IMPATIENT 1's Avatar
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    Has anyone ever tried runnin say a 300-400hp shot on pumpgas but use methanol for fuel enrichment thru the nitrous?

    Dare to be different, if it turns out great you can claim you planned it that way.

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    Here is my combo and it works very well!!

    565 chevy
    10.4:1 compression
    merlin 355cc heads
    Mike Miller solid roller
    edelbrock victor tunnelram
    edcelbrock annular fogger
    2 1050 carbs

    I run the engine on regular 92 pump gas and I have a seperate fuel system for the nitrous that has C16 in it, when I arm the nitrous switch that also turns on the fuel pump for the nitrous system. It really is the only way to do it right in my opinion, I have ran up to a 32 nitrous jet this way with zero problems, 6500rpm on the engine and 7200 on the nitrous with a detailed B/C from B1.

    Hope this helps!!
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    "BOATLESS" blender over's Avatar
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    Quote Originally Posted by blownboosted View Post
    Here is my combo and it works very well!!

    565 chevy-Mine 496
    10.4:1 compression-Same comp
    merlin 355cc heads-Mine Edelbrock CNC 355cc Heads
    Mike Miller solid roller-Mine comp solid roller
    edelbrock victor tunnelram-Same intake
    edcelbrock annular fogger-Mine Edelbrock pro race e3 fogger
    2 1050 carbs-Mine 2 850 Demon carbs

    I run the engine on regular 92 pump gas and I have a seperate fuel system for the nitrous that has C16 in it, when I arm the nitrous switch that also turns on the fuel pump for the nitrous system. It really is the only way to do it right in my opinion, I have ran up to a 32 nitrous jet this way with zero problems, 6500rpm on the engine and 7200 on the nitrous with a detailed B/C from B1.-Mine I run the same fuel, pump gas on motor and C16 in enrichment tank, 6100 on motor and not sure on the nitrous yet with this new system, jetted for a 250shot, motor makes peak power @ 6500, with a detailed pump tall "B" impeller from B1 My Old NOS plate system with a 250shot gave me right @ 6500

    Hope this helps!!
    Sound like you have a runner, I have a very close nos system-motor combo to you. Pretty cool.
    Last edited by blender over; 11-25-2013 at 02:32 PM.
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    Quote Originally Posted by blender over View Post
    Sound like you have a runner, I have a very close nos system-motor combo to you. Pretty cool.
    Nice combo!! I run the same E3 Fogger as you, Chris at B1 did the install for me.

    I am very happy with the way she runs, most fun i have ever had with the boat!! We are going to get after the hardwear early spring.

    Thanks!!
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  13. #11
    "BOATLESS" blender over's Avatar
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    Quote Originally Posted by blownboosted View Post
    Nice combo!! I run the same E3 Fogger as you, Chris at B1 did the install for me.

    I am very happy with the way she runs, most fun i have ever had with the boat!! We are going to get after the hardwear early spring.

    Thanks!!
    Way too funny, he plumed mine as well, did he recommend it to you? How do u like it? Hit hard?, Nos system works like expected?
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  14. #12
    Senior Member Double A's Avatar
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    Quote Originally Posted by IMPATIENT 1 View Post
    Has anyone ever tried runnin say a 300-400hp shot on pumpgas but use methanol for fuel enrichment thru the nitrous?
    I do on my snowmobile if that counts. It runs cooler EGT with Methanol vs C-16 and is about 1/3 the cost. 8000 rpm off and 9400 on.

    Boss Noss has a really cool system for powersports and they should expand it to other markets. It works on 300psi and the nitrous pressure fuel injection system eliminates the need for a fuel pump. Fuel is delivered via nitrous pressure. A 9v battery runs the deal. Someone call them and get it going on a boat! It's so much less to worry about!
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    Quote Originally Posted by blender over View Post
    Way too funny, he plumed mine as well, did he recommend it to you? How do u like it? Hit hard?, Nos system works like expected?
    I help pit crew on the Green with envy boat 317(Edelbrock sponcered) and got to know Mark Honswetz from Edelbrock and got hooked up with Chris at B1. Hope you get a chance to meet Mark sometime he is a great guy to do business with!! Chris did my full pump as well as a few others in my home town, I wanted to run the same nitrous set up as they did to keep things simple when asking tuning questions over the phone or if I had any problems.

    Chris did a very nice install on my intake, nothing but impressed with him on anything he has done!! The system seems to work very well so far and yes it hits like a truck!! lol. I have a few tune ups I ran last season and will fine tune them this spring, when you get close to spraying it don't hesitate to hit me up.
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  16. #14
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    Quote Originally Posted by IMPATIENT 1 View Post
    Has anyone ever tried runnin say a 300-400hp shot on pumpgas but use methanol for fuel enrichment thru the nitrous?
    I prefer methanol but it can be a pain in the ass! To make it easier

    Nitrox racing, makes a 3 gal tank meth tank with pump, a three way valve
    to purge the meth from the lines with gas when done.

    Methanol and NOS work very well on 2 strokes
    The cooling of methanol is something like 3 times greater.
    Plus, it reduces the chance of detonation if the motor on pump gas
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