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  1. #1
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    Default Best way to order holley pump nozzles and jets ??

    hi
    Wanting to tune 400sbc with QFT -SS- 780vs
    Whats the best way to buy a good selection of accel pump nozzles ??

    There is a kit available but with a lotta stuff I dont need

    Locally its 270$ by the time u buy 6 squirters u may have well bought the kit . The kit includes pump cams as well .
    Figure I will need to try 2-3 squirters up and down of size Tot=5-6 nozzles

    So whats the best way to do buy the nozzles and cams

    The jets are not to bad as i notice i can by lots of 20 in a small rack .
    Air bleeds I will drill out etc till I find the best and install new correct sizes

  2. #2
    Part of the furniture BasicQ's Avatar
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    Quote Originally Posted by swampy View Post
    hi
    Wanting to tune 400sbc with QFT -SS- 780vs
    Whats the best way to buy a good selection of accel pump nozzles ??

    There is a kit available but with a lotta stuff I dont need

    Locally its 270$ by the time u buy 6 squirters u may have well bought the kit . The kit includes pump cams as well .
    Figure I will need to try 2-3 squirters up and down of size Tot=5-6 nozzles

    So whats the best way to do buy the nozzles and cams

    The jets are not to bad as i notice i can by lots of 20 in a small rack .
    Air bleeds I will drill out etc till I find the best and install new correct sizes
    According to the specs that carby already has 33 squirters, is that right? Almost all carbs come with pink cams so that’s probably what it has too. The most expensive things you buy are those you don’t use. I’d be surprised if you need more than a 31 and 35 squirter to trial and an orange and blue cam along with the pink already there. That’s x9 combinations to trial. After that if it’s not quite right you would more than likely know what one part will make it right. If your going to dabble with the idle circuit and main air bleeds and jetting acc pump tuning comes last.

    Those jet sets are a cost effective way to buy jets and keep them organized at the same time.

    By the specs main air bleeds are .033” so to trial smaller you’ll need to buy or make them. For air bleeds if you have an index drill set then blank 10-32 x I think 1/8” set screws are the go but hard to find in Aus. I think GTOGeoff had a contact? Otherwise get .025” air bleeds and drill to finished size.

  3. #3
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    hi
    thanks
    Looked online
    comes with a red pump cam which is fatter vs the pink
    correct on the pump nozzle size
    Basically get the motor running and take it for test and tune ,load in programable dizzy basic timing curve [10-15 at idle and 34deg at 2500rpm ] and measure the A/F ratios first and see if the curve is to my liking

    set idle mixture and see if more or less than 1.5 turn out . Gives an idea about transition port mixtures rich /lean
    measure and set cruise mixtures about 80kmh try 14--15;1
    set PV upto open at 80-90kmh ,,,vacuum at that speed
    Set mixtures at 3200rpm = max 100% primaries tune PVR to that 13-14;1
    Set secondary mixture as fast kmh as i want to dare about 12.5;1 A/F

    Thats all in a perfect world LOL and thats for starters . !!

  4. #4
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    I have some Holley squirters, never used. 0.025" orifice I believe. I have about 8-10 would have to check; bought them in a moment of weakness. Not going to split them, $5 each.

  5. #5
    254RWHP boat anchor EVL253's Avatar
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    sometimes kits come up for right price on gumtree etc
    11 second E85 bottle fed boat anchor

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