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jalexquijano

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About jalexquijano

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    Advanced Member

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    Panama
  1. jalexquijano

    Setting Correct Float Level On 3 Screws Su Carbs For 1972 240Z

    Took the car for a ride yesterday and had to dial both fuel mixture knobs to 4 turns clockwise. 3 or 3.5 turns simply dont work. Could this be attributable to the fact that my engine is not stock and has been modified to 2.6Liters with a Schneider 274F camshaft and pertronix ignitor module and coil? I would really like to set it to 2.5 or 2.75 turns clockwise but it becomes to lean and lacks power. I will test the car today without the airbox fastened to the carbs to ease the adjustments if necessary. Airtex 8012SX pump is only pushing 3.2 psi.
  2. jalexquijano

    Setting Correct Float Level On 3 Screws Su Carbs For 1972 240Z

    Well i tried using the sight glass method to set the gap between the float and float lid in the best possible way. I have posted pictures for your opinion on the levels. The first one is the rear carb and the last one is the front carb.
  3. jalexquijano

    Sudden Loss Of Psi On Airtex E8012 Sx Pump

    Im just asking for a recommendation on a good fuel pump.
  4. jalexquijano

    Sudden Loss Of Psi On Airtex E8012 Sx Pump

    well maybe the pump is crap!
  5. jalexquijano

    Sudden Loss Of Psi On Airtex E8012 Sx Pump

    Recently purchased a couple of Airtex 8012SX which advertise as 5.5 to 9 psi. Once plumbed into the fuel lines when measuring the PSI before the carbs, the fuel pressure gauge reads 3.2 psi. I guess this company must be going through quality control issues: https://www.summitracing.com/int/parts/atx-e8012s/overview/ I was recommended a Carter 4070LP fuel pump: https://www.summitracing.com/int/parts/crt-p4070/overview/ Will this pump provide a steady 4 to 4.3 psi??? I just dont want to be wasting money and effort on cheap non feasible electric pumps.
  6. jalexquijano

    Sudden Loss Of Psi On Airtex E8012 Sx Pump

    I really need a steady 4 psi electric fuel pump. Is this carter 4070 any good? I read its noisy but will it give me the required 4 psi?
  7. jalexquijano

    Setting Correct Float Level On 3 Screws Su Carbs For 1972 240Z

    i already set it to 9/16 (.55 inch gap) from the bottom of the float to the edge of the float lid and i still have to turn the mixture knobs 4 turns clockwise when it was supposed to be 2.5 - 3 turns clockwise. Does the tang needs to be pushed a little bit more thus closing the gap less than .55 inches? Still dont understand the 1/16 inch below nozzle method at 2.5 turns.
  8. jalexquijano

    Setting Correct Float Level On 3 Screws Su Carbs For 1972 240Z

    Okay. So it doesnt matter if the gap is measured with the weight of the float closing the needle stem when the gap is .55 or 9/16 inch? Its really hard to accomplish this measurement blowing through the gas hole to keep the needle pin from depressing. I am using a wooden stick that measures .55 inches.
  9. jalexquijano

    Setting Correct Float Level On 3 Screws Su Carbs For 1972 240Z

    2 Questions: 1. Does the float needs to be parallel to the float lid when measuring the .55 inch gap or can it be bent or incline downward? 2. Is the measurement taken from the base of the lid to the bottom of the float or from the edge or rim or the float?
  10. jalexquijano

    Sudden Loss Of Psi On Airtex E8012 Sx Pump

    At the rear of the car. Besides the gas tank.
  11. jalexquijano

    Sudden Loss Of Psi On Airtex E8012 Sx Pump

    Front and rear carbs? Should i bend the tangs more??
  12. Installed long needle valve and seat in front bowl and short in rear carb bowl, set the gap to .55 inches and tuned it to 2.5 turns clockwise. Engine stumble and falls. Increased to 3.5 turns clockwise and it backfires through intake. Could one of the neddle and seat fastened at the bowls be damaged?? This is not normal. My electric pump is brand new and is measuring 3 psi.
  13. jalexquijano

    Sudden Loss Of Psi On Airtex E8012 Sx Pump

    i thought 3 psi was still low. How can i verify that both the front and rear needle and seat are in working order? I ordered a new set from amazon.
  14. jalexquijano

    Sudden Loss Of Psi On Airtex E8012 Sx Pump

    How do you know if the needle and seat is damaged or not? I took one of them out of the float lid and blew some air and the stem was indeed working! Please advise.
  15. jalexquijano

    240Z Su Carb Installation Of Hoses Help

    What a beautiful engine!!!
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