1. Holley setup question, transition slots | NastyZ.
2. Stumped on getting carb to idle good. | Hot Rod Forum.
3. Holley idle/transfer slot adj question | Hot Rod Forum.
4. Carburetor Transfer Slots - Most Common Questions.
5. Quick Fuel carb issues | NastyZ.
6. Quick Fuel Carb Problem | Chevy Nova Forum.
7. Quick Fuel - Holley Motor Life.
8. The Ultimate Guide to Holley Carburetors - MotorTrend.
9. Quick fuel carb running too rich at idle | Hot Rod Forum.
10. Tuning Your Holley Carburetor Made Easy - MotorTrend.
11. Quick Tips On Quick Fuel Carburetors - Street Rodder Magazine - Motor....
12. Proform 750 CFM DP carburetor tuning? - DodgeC Forum.
13. E85 Tuning Help Needed - read-only - Tapatalk.
14. Carburetor Tuning: Cure Big Cam Sag - MotorTrend.

Holley setup question, transition slots | NastyZ.

Mar 29, 2014 The correct fuel level float adjustment is midway up the site glass. Different from Holley which has it at the bottom of the site hole. Nick ; if you have too much of the transfer slot exposed it will richen up the idle circuit. There should be a secondary throttle adjustment screw that will allow more air into secondary venturi at idle.

Stumped on getting carb to idle good. | Hot Rod Forum.

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Holley idle/transfer slot adj question | Hot Rod Forum.

5 56toy Discussion Starter Sep 9, 2021 I have a Holley 1460 carb on a stock 1978sbc. I have no history on this carb ,came with car The idle air screw adjustments have no effect. rebuilt carb, every thing cleaned and all passages checked. Cant get it anymore. So now it#x27;s one extreme or the other. I feel 680 is too small and 780 is too big. I like the features of Quick Fuel, so I would prefer to go with them unless it#x27;s custom. anyway, here is my vehicle info... The car is a 1972 Nova weighing in at about 3300 LBS. 28 inch drag radials..

Carburetor Transfer Slots - Most Common Questions.

May 2, 2016 To avoid this, use the following secondary throttle adjustment on the Holley carbs: After adjusting and setting up the primary throttle blade angle as described above .020 transition slot exposure, hold the carb.

Quick Fuel carb issues | NastyZ.

#3 Mar 28, 2016 Ive always adjusted primary t-slots and let secondary slots end up where they may adjusting idle by secondaries only. I dont touch primary adjustment after slots have been set. Dare to be different, if it turns out great you can claim you planned it that way. J Reply Save Like ol guy #4 Mar 28, 2016.

Quick Fuel Carb Problem | Chevy Nova Forum.

Mar 11, 2012 Start by taking the carb back off and flip it updise down amp; post some pics of the throttle blade position. Sound like the front amp; rear are not even and you have too much transfer slot exposed. Sep 27, 2016 I would expect.070quot; to be lean..078quot; to.086quot; is usual for 4150 carbs. You may or may not need to jet the T-slot. The reason to use a restriction there is if it is too rich at the upper end of the slot and OK everywhere else. This is situation arises when the slot is longer, or longer and wider, than ideal for the particular engine. Aug 25, 2019 Engine Quickfuel carb hesitates/surges/dies at part throttle 8027 Views 12 Replies 5 Participants Last post by eric32 , Aug 27, 2019 J jimsmonte80 Discussion Starter Aug 25, 2019 Before anyone starts suggesting timing checks, jets sizing replacements, or even idle mixture adjustments.

Quick Fuel - Holley Motor Life.

Jul 1, 2008 All carburetors mix air with fuel in the venturi just before it enters the engine. But carburetors also mix air with fuel farther upstream inside the carburetor in the main well to make the liquid. Jul 27, 2015 Your first move is to attach a good vacuum gauge to a manifold vacuum source that is, one originating from beneath the throttle butterflies. Check the fuel levels in the fuel bowls and adjust as necessary. If the original settings are still in place, the idle mixture screws should be two turns out from the seated position.

The Ultimate Guide to Holley Carburetors - MotorTrend.

Nov 16, 2019 What controls the calibration of your idle circuit and off idle circuit which is also known as the transition circuit if your idle air bleeds which should be around the.070 size and are the bigger outer air bleeds and also the biggest thing that controls how rich or lean your idle circuit is the idle feed restrictors in the metering blocks and.

Quick fuel carb running too rich at idle | Hot Rod Forum.

Jun 5, 2009 1. Where to start with the 4 mixture screws ? Is there a ground-setup, from where to start, like #39;#39; turning the screws clockwise in until the end and then 2 full turns counterclockwise back#39;#39; ? -gt; All screws the same adjustment ? 2. The 408W has 2 breathers. PCV is not connected to a valvecover. Must this port become closed ? 3.

Tuning Your Holley Carburetor Made Easy - MotorTrend.

Cause the float level to be too high. Conversely, if the fuel pressure is significantly below 6.5 P.S.I., the float level will be too low. For the carburetor to operate correctly, the float levels must be in the middle of the sight glass. The most accurate way to establish the correct float level is to check it while the engine is running.

Quick Tips On Quick Fuel Carburetors - Street Rodder Magazine - Motor....

If the carburetor is new or has been rebuilt, you should set it to quot;factoryquot; adjustment. You can do so by adjusting the idle mixture screws to 1.5-2 turns out, and the idle speed screw to 1-1.5. Mar 13, 2015 Intake Valve Lift:.545 Duration Intake: 294 Exhaust Valve Lift:.565 Duration Exhaust: 300 Lobe Center: 110 Intake Center Line: 106 Carb: Primary Main Jet: Used to be 72, now 70 Secondary Jet: Uset to be 75, now 74..

Proform 750 CFM DP carburetor tuning? - DodgeC Forum.

The Transfer Slot 7 is a large air bleed when the throttle is closed, but as the throttle is opened the slot is exposed to manifold vacuum and becomes a discharge port for Idle System fuel. The Idle Screw Port is a variable discharge restriction that is adjusted by the engine tuner to achieve the desired A/F Ratio at engine idle.

E85 Tuning Help Needed - read-only - Tapatalk.

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Carburetor Tuning: Cure Big Cam Sag - MotorTrend.

Oct 1, 2008 SOLUTION: The obvious place to start is by checking to make sure that the float bowl level is set properly. Most carb manufacturers and tuners suggest setting the float level at roughly 25. Exposure of the transfer slots Figure A at the idle condition. When increasing the idle speed of a four-barrel modular carburetor, adjust both the primary and the secondary throttle blades. If you adjust the idle speed with the primary throttle blades only, you could upset their position relative to the transfer slots.