57-65 WCFB 1 x 4 carb - Cover only no spring or spring plate CUD3741 $ 4.99 Gasket - Base WCFB 4GC G402 $ 4.95 Flange Gasket G1164 $ 4.95 WCFB Air Cleaner Gasket . WCFB Carburetor Cutting Out on Left Hand Turn. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Carter WCFB, 4 barrel metering rod adjustment instructions. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. All late model WCFB carburetors have three different length bowl cover screws. Also make sure one isnt rubbing on the side. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. With carburetor installed and engine warmed up. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. Watch on. The accelerator pump circuit resides on the primary side of this carburetor. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Seat the discharge check by tapping lightly in the hole to form a good seal. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Back out throttle lever set screw until throttle valves seat in bores of carburetor. Some have a coating to give it a better shelf life. Carter WCFB Metering Rods 4,292 views Jul 15, 2018 28 Dislike Share Save Mikes Carburetor 18.7K subscribers https://www.carburetor-part.com is providing this video about the Carter WCFB 4. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Test the needle by holding it down gently with a brass drift punch. Fig. Must be made after fast idle adjustment. Both valves should be closed. Ultra-Sonic Cleaning3. Carter WCFB 4 Barrel Adjust Float. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Float drop not set, or fuel pump pressure too low. Everyone Has Started an Engine in the . You are flooding (getting too much gas in the float bowl), caused by these types of problems. Could the float bowl actually be the problem? BBS) and were basically an on/off condition similar to the function of a power valve. The well should fill with fluid. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. This box did not have a part number. Rotate screw C, or bend tang, until throttle valves are open the distance listed in, With throttle valves held wide open, there should be a clearance between upper edge of choke valve and the inner wall of air horn (. Then close throttle. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Once engine speed gets high enough, the carburetor vacuum is strong enough to pull fuel through the main jet and the accelerator pump circuit is no longer used. Adjust by bending throttle connector rod at upper angle (B). Can fill the accelerator chamber with a syringe (through top open passages of forward barrels where choke butterfly is) and the jets will spray gas into forward chambers (and will idle and accelerate for about 15 seconds)but when that gas is depleted, the spraying stops. It needs about 4 lbs of pressure. The file is in PDF format, you can download and save/print a copy. Most of the single step rods were steel. Coat threads of screw with sealing compound and install it. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Air Bled has the venturi tube pointing down into the bore. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Sometimes scraping around the edges with an awl will remove the staking. When the piston is frozen you may have to drill a small hole in the bottom of the float bowl, just under the piston and hammer it out. With engine running, check for an air leak at front left corner of carburetor between throttle body and bowl by squirting carb cleaner at this point. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Carter WCFB 4 Barrel Carburetor Float System. Fuel is puffing out nozzles on primary circuit at idle on primary carb of a dual carb set carbs were just rebuilt what is the cause. Fuel enters the primary side of the carburetor through a strainer screen at the fuel inlet and is directed to the primary needle valve and . Rotate throttle stop screw E until engine idle at approx 500 RPM. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. The distance from the dust cover boss to the top of the plunger shaft should be 1/2 inch (distance from base to tip of finger on gauge) (C). Can you help me out? A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Change the choke setting to index. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. The discharge check is seated at this time to prevent air being drawn into the pump well. Probably not since only one butterfly is open. Carter WCFB Carburetor E-Manual Download eWCFB, The file is in PDF format, you can download and save/print a copy, FREE to our customers that buy a rebuild kit. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Be sure these ports are clear. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Take the top off and put the pump in the well all the way to the bottom. With throttle valves seated in bores, dust cover and gasket in place. This eliminates any bog or hesitation when acceleration. The main body is partitioned into two compartments (primary and secondary), each containing a double pontoon float and lever assembly and a needle valve and seat. You can also check the adjustment by measuring (F) which should be 18/64. Check any vents to make sure they are open. Back out throttle stop screw until throttle valves seat in bores. *New Airhorn Gasket7. Adjust by bending unloader lip on throttle shaft lever. Make sure manifold heat control valve is free. Adjust by bending float arms, making sure both pontoons on each float are the same height. Carter WCFB 4 Barrel Carburetor Float System. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Measure from center top surface of pontoons to air horn. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. The adjustment of the pump is important in order to get the required fuel. Install the pump connector rod (D) in the outer hole, long stroke. 2: Carter AFB idle mixture and speed adjustment screws. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. As the accelerator is released and the primary throttle plates are closed to the idle position, the upward movement of the pump plunger and attached spring bracket exerts tension on the spring and tends to stabilize the float in a level position. 1: Carter WCFB idle mixture and speed adustment screw location. Piston force is too much for linkage. Quick test to see if the accelerator pump is working. Can't find the answer you're looking for? Adjust by bending throttle connector rod at deepest angle as shown. Any pressure put on the needle will damage it. Please complete the fields below to send your friend a link to this product. Ultra-Sonic Cleaning3. With bowl cover assembly inverted and float resting on pin in seated needle, and with gasket removed, the distance from the bowl cover to the top of float should be 7/64. Back off the idle screw so that the throttle plates close completely. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. See figure 9F-2.A float lifter spring, which is connected to the lever arm of the primary float and to a bracket on the accelerator pump plunger, is incorporated to stabilize primary bowl fuel level and prevent float bounce upon sudden stops, or on rough roads (these springs are nowhere to be found). Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. Procedure is as follows: with the throttle lever set screw backed out and throttle valves seated in bores of carburetor, press down on vacumeter link (D) until metering rods bottom at (E). Clogged idle tube, or passages in the idle circuit. They know their stuff and provide technical assistance and guides in both paper and video formats. The ends of the connector rod should point to the throttle arm side. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Make sure the ball rattles. With mineral spirits in the float bowl, Raise the pump. Correct by removing any burrs or nicks. They are not meant to fill the hole, only to restrict it. This spring is a bit complicated so this video will be very helpful when you change your spring.Find this WCFB spring here: https://www.carburetor-parts.com/wcfb-66d400.htmlFind WCFB parts here:https://www.carburetor-parts.com/wcfb-partscontents:00:0000:42 removing fast idle cam assembly00:56 taking the assembly apart piece by piece01:07 removing the old spring01:22 installing spring02:15 which direction does the pieces go?02:38 assembling the pieces03:16 installing the cam assembly onto the carburetor Metering rods for the WCFB have been out of production for several years now. Do not depress float lip against spring in needle, but let float rest of its own weight. Pulloffs : CUFWCFB2 $ 0 . Your friend will receive an email from you with a link to our site. It needs to go up and down easily.Is there aspringunder the power piston?Are the venturi cluster gaskets sitting flat and not curled over? 1955 Pontiac - Loading or Carburetor Flooding Can't find the answer you're looking for? Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. When removing valves they should be marked so that they get put back the same way. The main body is partitioned into two compartments (primary and secondary), each containing a double pontoon float and lever assembly and a needle valve and seat. Outside top of early Carter tool box with correct decal. Notice holes from which linkage rods are removed so they can Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Two ports act as calibrated air bleeds. What Has Been Done to This Carburetor?1. Make sure there is a check needle below the main discharge. Do not depress float lip against spring in needle, but let float rest of its own weight. As the engine gains in RPM, the vacuum drops and the metering rods are pulled out of the main jet allowing more fuel to flow. Other than that, great company to deal with. Carter WCFB 4 Barrel Carburetor Float System. Carter WGD Adjustments Float Level With bowl cover assembly inverted and float resting on pin in seated needle, and with gasket removed, the distance from the bowl cover to the top of float should be 7/64. They sometimes need trimming. 1963-64 Studebaker Carter AFB 1962-1965 Chevrolet 327 and 409 engine carburetor manual 1958-1968 Lincoln carburetor manual AVS 1966 Chevrolet 327 and Marine Carter AVS carburetors BB Ball and Ball Single Barrel downdraft manual: 1939-60 Chrysler, Dodge, Plymouth Carter BB, BB1, BB1A and BB1D updraft Carter BB for IHC BBD 1st check to make sure the fast idle linkage isnt holding the valves open. Enter Carb Number. The fuel is also conducted through a passage in the air horn to the secondary needle seat. While holding the parts as indicated above, rotate the metering rod arm B until the finger on the arm at D contacts the lug on the vacuum piston link C. Primary & secondary float will probably have different measurements. This restricts the flow of fuel. In this video I show you how to replace the fast idle spring on the WCFB carburetor. Carter WCFB, 4 barrel carburetor manual. Carter WCFB Build Sheets They work fine when I push hard down on the piston. The adjustment of the pump is important in order to get the required fuel. Tyler's Forgotten Car Rescue 22,933 views. *New Float6. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. The metering rod adjustment should be done after the pump adjustment. Fast, secure e-book download. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. This allows air instead of fuel to be drawn off the pump jets. Both Carter and Rochester engineers determined that, on some applications, the float level in the primary side of the carburetor should be different than in the secondary side of the carburetor. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Low fuel pump pressure always check you motors manual for the correct pressure. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. The balance passage also tends to prevent flooding in the event one of the needles should temporarily become stuck open by maintaining equal fuel level between the two float chambers. In my repeated attempts to get the accelerator valve to pump, the car has run for several minutes combinedplenty of time to get the float bowl full. One of the butterflies is open about 1/8 with the carburetor dis assembled. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Carter WCFB 4 Barrel Adjust Float Mikes Carburetor 21.4K subscribers 5.5K views 4 years ago https://www.carburetor-parts.com is providing this video about adjusting the float level and. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Technical Details. Can't find the answer you're looking for? Fig. Good quality print. If not, then find the check ball and make sure it is loose. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Founded by William Carter in 1909, the Carter Carburetor Company produced units such as the AVS, AFB and 385-CFM WCFB for dozens of years. Make sure the pump relief check is clean. Hold a straight edge across top of dust cover housing, next to the pump arm. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Recheck float adjustments. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. No metering rod gauges are necessary. If a loss of rpm is noted, or if the engine dies, and air leak exists. Back out throttle screw so that the throttle valve close completly. Carter WCFB Carburetor Catalog Free WCFB Carburetor Manuals These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. Blowing out passages will not get them clean enough. Master Technician Tool Set (early, circa 1935, for 1923~1935 Carter carburetors all makes - most tools then current) Carter Master Technician Tool Set about 1951. Measure float height as illustrated above. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). cm448. The Solid fuel is the later models BBDContents:00:00 intro00:34 air bled adjustments00:37 air bled float setting01:03 air bled fast idle type I01:25 air bled fast idle type II01:42 air bled fast idle type III01:58 air bled unloader02:24 air bled choke vacuum kick03:01 air bled automatic choke03:16 air bled pump04:08 air bled dashpot04:27 air bled idle speed \u0026 mixture04:58 air bled emission carburetors idle mixture06:00 air bled limiter cap06:36 solid fuel adjustments06:40 solid fuel float setting07:03 solid fuel metering rod07:27 solid fuel accelerator pump07:55 solid fuel bowl vent08:18 solid fuel fast idle cam08:43 solid fuel choke pull-off09:12 solid fuel automatic choke09:24 solid fuel egr dump valve09:46 solid fuel unloader10:08 solid fuel high altitude10:28 solid fuel idle speed \u0026 mixture12:11 solid fuel Limiter cap12:37 solid fuel fst idle12:51 solid fuel throttle positioner13:56 solid fuel vacuum throttle positioner14:31 solid fuel sol-vac15:04 solid fuel dashpot15:28 solid fuel transducer The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Examine the viton tip for any marks.Fuel pump pressure could be too high. What more could you ask for? When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Be careful removing the intake check retainer. Each size must be used in its own location. Use a brass drift punch. 3: Holley 4150 idle mixture and speed adjustment screws. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. Carter WCFB Rebuild kits: Rebuild Kits. Fuel enters the primary side of the carburetor through a strainer screen at the fuel inlet and is directed to the primary needle valve and seat. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). The most complete document I have found. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. This is percolation. The WCFB carburetor which came on some of the earliest 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. A stand pipe is provided at both needle seats as an additional trap for foreign material that might prevent the needle valves from seating properly. Can't find the answer you're looking for. parts. Is there a pointed check weight in the main discharge hole. They are staked in the hole. See figure 9F-2. Test the floats in hot water and if you get any bubbles then they are leaking. When adjusting the screws doesn't change the RPM then it means there is a problem with either the air, or the amount of fuel. Adjust by bending the choke connector rod at lower angle (H). Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. The manual says to back out the throttle stop screw and hold the fast idle cam in the "choke open" position, then screw in the throttle stop screw until it just contacts the throttle lever arm, then give it another full turn. The piston is brass and can be damaged very easily. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. *New Main Body Gasket8. When done you should see very little daylight around the valve. In this video we are going to show you how to do the various adjustments on both the Air Bled and the Solid Fuel type of BBD carburetors. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. The flat surface of the pump arm should be parallel to the straight edge. Check your auto manual for the spec, but somewhere around 4-5 lbs would be good.Be sure the power piston is not frozen in one position. Press down on vacuum piston link C until metering rods bottom in the carburetor body. DO NOT apply any pressure on the needle. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. Carter 2 Barrel BBD Adjustments Mikes Carburetor 21.5K subscribers Subscribe 7.9K views 1 year ago In this video we are going to show you how to do the various adjustments on both the Air. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. This restricts the flow of fuel. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Share. Test the fuel pump to be sure it isnt putting out too much pressure. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. Adjusting the WCFB float level & float drop: The main body is partitioned into two compartments (primary and secondary), each containing a double pontoon float and lever assembly and a needle valve and seat. The accelerator pump circuit resides on the primary side of. . Carter WCFB 4 Barrel Accelerator Pump Circuit Carter BB Carburetor Assembly Part 1 of 2 Rochester Quadrajet Idle Tube Removal Tunning Rochestor Quadrajet 4 barrel Carburetor Mark Osborne. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! Ethanol leaves deposits behind that acts like corrosion. One caveatits my impression that the float bowl is full because when I disconnect the fuel supply line from fuel pump (to card), it has pressure on the line. Hold in place and carefully tighten metering rod arm set screw (G). How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. The Carter AFB uses weights, and therefore never goes out of adjustment. I have repeated multiple times with same results. Probably around 4- 4.5lbs. *New Accelerator Pump5. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. With choke valve tightly closed, tighten fast idle adjusting screw (K) (on high step of cam) until there is the clearance as listed on carburetor specification page between throttle valve and bore of carburetor, side opposite idle port. Can't find the answer you're looking for? It should not be opened up. As for the pump not squirting.I suspect the pump well isnt filling up. The mixture screw may be bent, or damaged. A WGD usually has a pump arm like that of a WCFB (IIRC). However, it is very similar and I found it very useful. Gasket between bowl and base is installed backwards (easy to do). Rotate throttle stop screw E until engine idle at approx 500 RPM. This can be done by looking at the impression on bowl cover gasket. a. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Carter WCFB 4 Barrel Carburetor Float System. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Install the pump connector rod (D) in the outer hole, long stroke. This check prevents excessive pressure in the discharge passage during acceleration. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. This is an electronic rebuild manual, no physical copy will be provided. As the accelerator is released and the primary throttle plates are closed to the idle position, the upward movement of the pump plunger and attached spring bracket exerts tension on the spring and tends to stabilize the float in a level position. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Refer to the Adjustment Data Table for adjustment dimensions. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Someone has installed it improperly. Hold air horn upright with floats hanging. Put a straight edge across the dust cover as illustrated. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Run a blunt object around the inside of the leather cup to make sure any coating is broken. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. William C. Carter was born in Union City Tennessee in 1884. The best-selling product Click now to browse 1957 LINCOLN ACCELERATOR PUMP CARTER WCFB FLUORELASTOMER CUP ETHANOL RESITANTIS we ship worldwide cch-rc.com, C $45.04 Free shipping for many products Find many great new & used options and get the best deals for 1957 LINCOLN ACCELERATOR PUMP CARTER WCFB FLUORELASTOMER CUP ETHANOL RESITANTIS at the . The correct way is to use a fuel pump pressure gauge. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. The setups data is the same. Hold air horn upside down with floats in place and gasket removed. The main body is partitioned into two compartments (primary and secondary), each containing a double pontoon float and lever assembly and a needle valve and seat. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev.
Flay Vs Voltaggio Who Won,
Appleton East Freshman Football,
Articles C
