We try to carry everything that is available and some carburetor parts that …. I am at stage 17 on 1411 chart. Classic Industries offers a wide selection of 1952 Chevrolet Truck parts, including 1952 Chevrolet Truck interior parts and soft trim, 1952 Chevrolet Truck exterior sheet metal, 1952 Chevrolet Truck moldings, 1952 Chevrolet Truck emblems, 1952 Chevrolet Truck weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. TYPICAL SETTINGS QUADRAJET – 3 to 5 TURNS FROM. In this tech article CAR CRAFT demonstrates how to rebuild an aging electric Quadrajet carburetor from a 1985 Chevrolet Monte Carlo and we install throttle shaft bushings and performance mods for. Assuming you are starting with a freshly rebuilt carburetor, LG's Quadrajet tuning procedure has the following steps: Verify that that the float level is correct. While hard to see, the old rod should have a number stamped on the rod. Bolt on, adjust throttle cable and other connections, and go! Thanks for looking and let me know if you have any questions. 0 / 305 and 5. The primary circuit metering rods are adjustable and replaceable without disassembly of the carb. I know the basics about them but you know how fragile they are. I had my car at 2000 feet altitude, and my mixture screws needed a MAJOR adjustment. I will be the first to admit and try to sell that. The metering rods are metering the main circuit. The Charger feels like a different car now! It seems much faster and probably gets better fuel economy too. APT Adjustment. I had a guy rebuild my quadrajet and i got it back all out of whack. The Q-jet has small primaries and huge secondaries, with air doors on top. I just don't want to run too lean and blow the. Metering rods have three steps for metering, economy, midrange, power. When interchanging rods, unless one is deliberately changing the step length, one should. The Quadrajet's primary circuit had a small solenoid installed to control the depth of the primary metering rods. Find block head gear available for buying now. Hide thumbs Auxiliary Power Piston Metering Rod Removal. Depending on the year, there are two ways to control rod depth. QuadraJet carbs have three basic tuning variables, and these get people all confused: Primary Metering Jet, Primary Metering Rod, and Secondary Metering Rod. Chrome Carburetor Throttle Return Spring Bracket Street Hot Rat Rod. For the divorced choke, the same setting applies, but bend the operating rod to set the choke plate. October 26 2019, Current turnaround for carb builds and restorations is about 8 weeks. Quadrajet Exploded View: Exploded view of the Rochester 4bbl Quadrajet with labels. hi nice tech tip ,. The Q-Jet meters fuel through the main jets. The AVS metering rods are lifted with low vacuum, whereas the Quad meter rods are connected to the secondary air valves and are lifted with high air flow. I have a Quadrajet on a 1975 Pontiac 400cid engine. A lighter gauge spring = q uicker fuel delivery. Locate Carb Adjustment Tool in stock and ready for shipping right now on the internet!. This is also the place to go for carburetor kits & parts. The secondary fuel metering rods are lifted by a cam-actuated hangar connected to the air valve shaft. Browse a bunch of Carb Adjustment Tool and comparable listings available on sale this week. I have a Rochester Quadrajet Marine Carburetor #17059286. The Quadrajet was used on such a wide variety of engine sizes from each respective automobile manufacturer, that separate fuel-metering circuits and a variety of vacuum sources were also required and each carburetor was given a specific casting number. My car continues to idle as expected through these procedures, and that goes for my freinds and customers as well. Search Search. I just had a 2013 mercruiser 357 mag bravo one 4v engine (SN 1G403579) installed in my boat. If anyone needs more info on rods and hangers, as to what all this means, or what size are the metering rods they have, I have all this info if you need it. I'm running a similar engine minus the heads you have, and I run a 72 main jet with a 48 metering rod at 6500 feet. The price you pay for this is when you open the secondaries it is like flushing a toilet, and it can take time to get the jets and metering rods set correctly. 1360" and non-removable from carburetor. #1437 #1438 #1439 #1440 #1441 #1442 #1443 #1444 #1416 #1445 #1460 #1461 #1462 #1463 #1446 #1447 #1448 #1436 #1449 #1450 #1451 #1452 #1418 #1453 #1454 #1455 #1456. Be careful to properly position metering rods in metering jets. All Q—JET carbs have primary metering jets that were designed only for the Q—JET carb. QuadraJet carbs have three basic tuning variables, and these get people all confused: Primary Metering Jet, Primary Metering Rod, and Secondary Metering Rod. When turning a Quadrajet, you also can alter the hanger ratio and the cam profile that lifts the rods for faster response. Most will have 1 inch 20 Fuel inlet. Rochester Quadrajet, 4 barrel carburetor primary metering rods. Quadrajet primary and secondary metering rods and hangers Page. Cliff's High Performance Quadrajets - Quadrajet rebuild kits, tuning & Carburetor restoration services for Rochester Quadrajet repair, kits and parts. Compatible with all Chevy/GMC trucks and cars 1974 thru 1978 Available for 350, 400, and 454 Engines Bolts on to any Quadrajet/Spread bore GM style intake manifold. QuadraJet Secondary Metering Rods Degrees of Secondary Air Valve Opening vs. 1906r Remanufactured Rochester Quadrajet Carburetor 4mv 80-89 Big Block 454. These rods control part throttle mixture,just keep raising them a little at a time till 6our problem is gone. A single metering rod and step-up spring is located underneath each cover plate. The part throttle cruise section of the metering rod comes in a variety of diameters and tapers (transition between between lean and rich). Please try again later. There are two needle adjustments screws in front of the carburetor, but I'm not sure which it is and which one does what. Some late-model Q-jets are set up to allow you to adjust the position or depth of the primary metering rods in the jets. It will tell you exactly what metering rod,Spring, and jet to use. The Edelbrock 1406 Performer Series 600 CFM electric choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. The 78 Carb calibration should be close if it is in good shape. Oldsmobile Carb numbers. 825 length 66-83 66-51 66-16 66-54. 10 7033830 7033830 7033830 7033830 Metering Rod — Secondary 11 7029087 7029087 7029087 7029087 Gaaket — Air Horn 13 7034522 7034522 7034522 7034522 Secondary Metering Rod Holder Kit — 7035344 7035344 7035344 7035344 Air Valve Spring and Cam Kit 12 7031393 7031393 GROUP 3. Each core is handpicked from our climate controller warehouse, we do not use Junk Yard cores. Have a 1973 Quadrajet 7043202 that had its' power piston robbed somewhere along the way. FLOAT ADJUSTMENT To properly adjust the floats in the EPS carburetor, two procedures must be followed. Edelbrock carburetors are carefully tuned at the factory to work with the vast majority of applications. 99; rochester quadrajet b series metering rods 1966-1974 cars trucks and all marine quadrajets. One thing that you CANNOT get from the carb number is the jet and metering rod sizes. Adjust as required. Cliff’s HP Quadrajet Carburetor Rebuild Kits include pretty much everything except for jets, metering rods, and the choke pull-off, which are available separately. Metering Blocks; Rebuild kits; Rochester 2G Parts. Some later models retained this feature, but starting in 1980 may have the adjustment locked via a collar. There is no other discount Car Body Parts store in Heiskell, Shippensburg, Defiance, East Greenwich or others that you can buy from that offers the same quality Opel parts for the same price. The B rods were introduced in 1968, probably to have finer control of the mixture during light accelerations in autos. Holley 4BBL Carburetors. Adjustment instructions are included and it is shipped out with insured shipping for your protection. com/3fbtm/ltwab. Rochester M4MC / M4ME Carburetor Manual. minus larger step in the metering rod) and power circuit (jet area minus smaller step in the metering rod). Q jet carb parts keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. - Air Horn to Float Bowl: 47- Screw - Air Horn to Float Bowl(countersink). CM25B 1957-67 Buick. This Carburetor will replace your original equipment 4 barrel Quadrajet M4MED type with the "GRAY" plug on top, the fuel inlet faces to the side and has electric choke. Lifts the Rochester secondary metering rods out of the secondary jets when the rear 2 bbls open. You can do this procedure easily. Power piston and metering rod installation. For us, it was 3½ half-turns. The quadrajet was a excellent card, simply unhealthy mouthed by using all of the Holley fans. This adjustment is done incrementally to avoid binding the rods in their hanger and to avoid damaging the hanger itself. com is providing this video about adjusting the metering rod on the YF & YFA carburetor. QUADRAJET CARBURETOR PRIMARY METERING RODS GRZ 07 APR 95 11/17/09 12:08 PM http://home. The primary (fuel inlet) side has two small bores each with a triple venturi which are equipped with a discharge nozzle. Files and videos of information. Re: Quadrajet have to change metering rods I still have the 42 metering rods, the one I attempted to bend back straight is a little crooked but not too bad. Is the plastic cam on the secondary air door shaft intact, not melted or broken, and lifting the metering rod hanger like it should? Can you measure the diameter of the inlet valve seat. On the topside, the secondary metering rod hanger should be adjusted to ideally achieve equal metering rod height and to allow both metering rods to touch the bottoms of their respective wells. Now if you have a later carb the rods use a different number and lettering on them, just use a micrometer to check them against the old rods. If you find the carburetor is too rich or too lean, a metering rod change is in order. Note: We've added a new easier to use version of the text of the service manual here. condition flow via a screw adjustment. Some later models retained this feature, but starting in 1980 may have the adjustment locked via a collar. Turn each needle in to seat lightly and then back out 3-4 turns. Until throttle body fuel injection started taking over in the 1980s, if you had a General Motors product with a V-8 engine, you could just about guarantee a Quadrajet racing carburetor. Quadrajet adjustment for accelerator pump. there is a rich limit that should be set 4/32 above the downward max in feedback quadrajets. Compatible with all Chevy/GMC trucks and cars 1974 thru 1978 Available for 350, 400, and 454 Engines Bolts on to any Quadrajet/Spread bore GM style intake manifold. Attempting to cure problems by tuning the wrong variable results in lots of frustrations for tuners and car owners. If you want good mileage the power piston or primary metering rod spring is where to play. If you look at the metering rods, they're marked with the sizes (. spring returns the metering rods to a raised position with the engine off. We have the best deals on Quadrajet Jets so stop by and check us out first! Jet Performance 201751 Quadrajet Primary Rod Carburetor Metering Rod. Until throttle body fuel injection started taking over in the 1980s, if you had a General Motors product with a V-8 engine, you could just about guarantee a Quadrajet racing carburetor. My car continues to idle as expected through these procedures, and that goes for my freinds and customers as well. Attempting to cure problems by tuning the wrong variable results in lots of frustrations for tuners and car owners. How many turns. The hanger, which holds the metering rods, can also be changed to alter the fuel curve. The Quadrajet's primary circuit had a small solenoid installed to control the depth of the primary metering rods. I learned this the hard way when as a young buck I rebuilt a quad and had them adjusted way to low the thing idled OK but was. Re: Quadrajet have to change metering rods I still have the 42 metering rods, the one I attempted to bend back straight is a little crooked but not too bad. Lift upward on metering rod hanger until the secondary metering rods are completely out of the air horn. A carburetor (North American spelling), or carburettor (Commonwealth spelling), is a device that blends air and fuel (usually gasoline) for an internal combustion engine. Im in bad need of a quad genius. Next remove the accelerator pump connecting rod and the choke connecting rod. 725 CARBURETOR CHART 3 7031393 7031393 Lockout Lever — Air Valve. Quadrajet Tuning Steps. 7 / 350 GM engine applications. Quadrajet 4MV only. 6-Secondary metering rods and hanger selected and high speed air bleeds resized for maxium full throttle horsepower and torque. Determine main metering rod size. the main jets and metering rods A brass cap in the air horn was located directly above an adjustment screw and was used to fine-tune part-throttle air/fuel mixture ratios. That makes it 21% smaller than the Edelbrock which is interesting I think. If you provide your carb number I can give you the baseline specs for the secondary linkage and air valve setup, then you can adjust from. The carburetor is extensively reworked by increasing main well size and is balanced to assure top end high RPM fuel flow. Secondary air valve control - torsion spring valve control/adjustment permits seamless primary to secondary throttle response regardless of the throttle opening rate (unique contoured profile developed for better cylinder to cylinder fuel distribution) 2 Stage metering rods control easily accessible without carburetor disassembly or removal. After porting heads and a high volume intake it's sometimes common to experience minor problems with keeping a consistent fuel mixture to make the engine perform properly. Metering Rod Adjustment Remove metering rod by holding throttle valve wide open. Rochester Quadrajet Carburetor – Getting To Know The Rochester Quadrajet and since then I have been a champion for this often maligned fuel metering device. Part# 1921. Some late-model Q-jets are set up to allow you to adjust the position or depth of the primary metering rods in the jets. Which jets and metering rods will work best in a 600 cfm edelbrock carb on a Chevy 305 with hei headers Also make sure to adjust your trans. Been building Q-jets for a long time. I know the basics about them but you know how fragile they are. After adjusting, readjust the secondary throttle tang and the slow idle screw. A single metering rod and step-up spring is located underneath each cover plate. An update has been made in the procedure for adjusting the lean mixture screw and the idle air bleed valve on Computer Command Control quadrajet carburetors. APT Adjustment. See Photo 7. I still have the factory weights needed to set the specific model secondary springs. I have a Rochester Quadrajet Marine Carburetor #17059286. See our vacuum ports. Adjust the secondary air-door tension loose so the carburetor bogs. The carb in the picture should have a metal pin on the front of the power piston. By setting the position of the power piston up or down using the adjustable part throttle adjustment, the primary metering rods can be made to sit higher or lower in the jets at max vacuum. They are simple and basically fool proof. 4 deg and the tip diameter can't exceed. In some cases, there will be four (4): 2 – primary and 2 – secondary. Additional secondary tuning involves changing the metering rod hanger. If you have a carb with jets, you have to take them apartits been a while since I have had a carburetor to mess with. Order your parts online or pick them up in-store at your local Advance Auto Parts. Quadrajet adjustment for accelerator pump. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created. 99 rochester quadrajet b series metering rods 1966-1974 cars trucks and all marine quadrajets. 0001") Secondary Jets are all. If you look at the metering rods, they're marked with the sizes (. It determined how far into the main jets the metering rods traveled when the magnetic field was energized. To adjust, bend choke connecLOJ' rod. I am at stage 17 on 1411 chart. Pickup Replacement and Air Gap Adjustment. I was going to have mine rebuilt and Bowen was highly recommended to me too. There are two needle adjustments screws in front of the carburetor, but I'm not sure which it is and which one does what. QUADRAJET CARBURETOR PRIMARY METERING RODS GRZ 07 APR 95 11/17/09 12:08 PM http://home. Once warm it seems fine. With the camera sitting on the oil filler cap a few more things to show how a metering rod system works on a carburetor. Files and videos of information. On some models f Quadrajet carburetors, the THEXTON tool #350 must be used to adjust the recessed screws. It appeared to be flooding at idle and the fuel was leaking excessively from the throttle body linkages (on both left & right side). You can force the system to go lean by grounding the green MC dwell lead that breaks out of the electrical harness underhood, assuming that you have 12 volts -to- the MC solenoid, and the solenoid is functional, grounding the green dwell lead will hold the metering rods in the full lean position. The most important part of the rod is the power tip. I know the basics about them but you know how fragile they are. Meaning the larger jet will have the full flow and the APT adjustment is not controlling anything at all. Quadrajet jetting for cold air. A 1935 metering rod may not work with a 1936 main jet; even though, unless one checks each item against the specs, they "look" the same. Quadrajetparts. ROCHESTER QUADRAJET CARBURETOR 4MV REPLACEMENT "mechanical / divorced choke" also known as "remote choke" 4 Barrel Quadrajet with "SIDE FUEL INLET". I still have the factory weights needed to set the specific model secondary springs. The screw that held the M/C solenoid into the float bowl casting was also the lean stop. DO NOT screw with the secondary air valve control spring - that air valve also lifts the secondary metering rods and if you mess that up you'll have a hell of a time regaining a crisp air valve opening and proper secondary fuel flow. Unit disassemble and check for cracks and The primary and secondary metering rods have all been calibrated and matched. 28" long, and one that is 1. The hanger determines how far the tapered metering rods are pulled out of the fixed jets. The Carter AFB lacked the bulky weight of the WCFB and offered more airflow capacity, dramatically increasing performance parameters. On the 2100 you will not have the metering rods in the venturi cluster assembly. It appeared to be flooding at idle and the fuel was leaking excessively from the throttle body linkages (on both left & right side). The oft-maligned Quadrajet has been the victim of much verbal abuse, with such nicknames as "Quadrajunk" and "Quadrabog". For example; I currently have 3 quadrajets with matching numbers (except date codes) and they all have different size primary AND secondary rods. Rochester Quadrajet, 4 barrel carburetor primary metering rods. QuadraJet Rods & Hangers: Primary Rods Single taper For 1974 and earlier Quadrajets (can be used on. To adjust, bend the pump lever while supporting it with a screwdriver. carter afb power pistons $ 8. One thing about metering rod carbs is that a tiny air leak can throw you WTH off. When interchanging rods, unless one is deliberately changing the step length, one should. The AFB became popular on Ford, General Motors and Chrysler cars. The QJet is a large 4 barrel carburetor that has a small primary side for fuel economy and good emissions and a large secondary side for good performance. 1975 and up quadrajets use a different metering rod. Idle adjusting needles (41). TUNING CHALLENGE 2. Parts List. Choose top quality brands Edelbrock, Holley, Uremco. 015 wire dia. A wide array of sizes was available through Delco for years, but most are no longer available. The Quadrajet was used on such a wide variety of engine sizes from each respective automobile manufacturer, that separate fuel-metering circuits and a variety of vacuum sources were also required and each carburetor was given a specific casting number. More Edelbrock Hot Hard Starting Problems I'll keep it as short as I can. This is the area of the rod still in the fixed jet when the air valve door is 100 percent open. All that I have ever had to do with my CCC Carb on the 180 hp 305, the 400 hp 359, and the 340 hp 383 was to open up the secondary air door adjustment and change the secondary metering rods and hanger. Opening the air valves by hand raises the metering rod hanger. I went out this morning and changed the metering rod and spring in the Edelbrock and it becamwe worse. Place the small gasket shield back on the air horn top. Attempting to cure problems by tuning the wrong variable results in lots of frustrations for tuners and car owners. Description: MR GASKET SHADOW SERIES SWIVEL SEAL HOSE FITTING, BLACK AND SILVER 90°, -4 AN Size, Cutter Type, Made From Aluminum Material, Can Withstand Up To 1000 Psi, Resistant To Virtually All Automotive Chemicals, For Use With Stainless Steel Braided Hose, With Manufacturer's Limited 90-Day Warranty. Because only a few of these carburetors are on the road today, suffice it to say that a few special tools available from aftermarket tool suppliers are required to adjust the primary metering rod height and travel during a rebuild. Rochester quadrajet carb adjustment? how many turns to get the right fuel mixture on a 1978 rochester quadrajet 4mv carbs is the fuel mixture has to be lean or rich setting on a carb or between. The first number is the higher part of the rod and the next number is the power tip of the rod. Holley 4BBL Carburetors. It might not work any better than the Edelbrock but I'd like to give it a try. com/3fbtm/ltwab. I have it down to 2 possibilities, one that is 2. Example 3445S. A good book that everyone who has a Q-jet should have is Doug Roe's Rochester Carburetors. They were identical to Rochester's units except the Carter name was stamped into the body. The CS and 71 TQs have. Engine died when put in reverse and I re-installed the original metering rods and springs. Which jets and metering rods will work best in a 600 cfm edelbrock carb on a Chevy 305 with hei headers Also make sure to adjust your trans. CM25B 1957-67 Buick. The float chamber is internally vented though a vertical vent cavity in the air horn. With years of Qjet experience and hundreds of satisfied customers, our carbs are track proven and dyno tested. Grasp the top of the metering rod with needle-nose pliers, then lift the rod out of the carburetor. A thinner metering rod=more fuel. In fact, the one 43 rod I received isn't perfectly straight either. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created. Still trying to set my carb up right. The solenoid rod is adjusted until it touches the blocks. See Photo 7. From1965-1979 Most will have 7/8 inch 20 fuel inlet till 1971 and 1 inch 20 after. The rods have a tapered end that fits in the primary main jet. Rochester Quadrajet Carburetor Secondary Metering Rods - Carburetor Parts & Kits for Rochester, Carter, Holley, Edelbrock, Ford Motorcraft QJet, 4G, 2G, Mercarb Marine, AFB, AVS Thermo-Quad Carburetors. APT Adjustment. Yeah I get that, but I think the metering rods affect the transfer port mixture as well, every part of the primary system has to draw its fuel past the metering rods. The QJet is a large 4 barrel carburetor that has a small primary side for fuel economy and good emissions and a large secondary side for good performance. All I have ever changed in mine is rods and springs. Quadrajet Carburetors. A good book that everyone who has a Q-jet should have is Doug Roe's Rochester Carburetors. 0 / 305 and 5. At Mikes Carburetor Parts we carry new universal 1 barrel carburetors. When the step-up rod is raised out of the jet, more fuel can flow through it. One cool thing about the Quadrajet is these main metering jets and rods, which advance fuel flow as the throttle is opened. Stock and Super Stock drag racing. 3 pairs of primary rods, 39B, 42B, 45B. An update has been made in the procedure for adjusting the lean mixture screw and the idle air bleed valve on Computer Command Control quadrajet carburetors. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 30 over, 6x-8 heads w/o porting, Comp XE274, 1. Genuine Su. Quadrajet Secondary Lockout. Manually plunging and letting the return spring push them back up, may show you what is happening. Few people realize that the Q-Jet has a strong racing heritage, particularly in N. 036" along with Edelbrock's. QUADRAJET CARBURETOR PRIMARY METERING RODS GRZ 07 APR 95 11/17/09 12:08 PM http://home. A good book that everyone who has a Q-jet should have is Doug Roe's Rochester Carburetors. October 26 2019, Current turnaround for carb builds and restorations is about 8 weeks. forsmeas(jÑement) rod proper table) outer 2 to stipport lever on pump and lever on rod side. If anyone needs more info on rods and hangers, as to what all this means, or what size are the metering rods they have, I have all this info if you need it. Push downward on metering rod against spring tension, then slide metering rod out of slot in holder and remove from main metering jet. Ask questions, Answer Questions, View cars and trucks, ChevyXtreme Link Directory. Find aftermarket and OEM parts online or at a local store near you. From 1975 through 1979, the M4MC was used in GM four-barrel applications, and utilized the standard carburetor-mounted choke and dual choke pull-offs. Rods used with 70xxxxx carbs are longer than rods used with 170xxxxx carbs, hence, they are not interchangeable. 4-Main jet and metering rods selected for clean cruise mixture and strong part throttle response and acceleration. SECONDARY METERING ROD RODS PR FOR QUADRAJET CARBURETOR 7033549 AX Studebaker NOS. You will also face the challenge of "tuning" the carb for idle mixture, part throttle cruise, and WOT mixture. The carb has an APT metering rod, with filler spool [like in the picture below]. In addition to the casting revisions that result in a physically larger carburetor, the primary metering rod length is different from ’74 and older Q-Jets. And better not drop the power piston spring, metering rod spring, or the tiny hairpins that hold the linkage arms while doing so. QuadraJet Rods & Hangers: Primary Rods Single taper For 1974 and earlier Quadrajets (can be used on. When turning a Quadrajet, you also can alter the hanger ratio and the cam profile that lifts the rods for faster response. com and affiliated sites. An important note: Primary metering rods are different lengths for the two units, both rods are available from GM, and the new-part part numbers correspond with the carb. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created. I still have the factory weights needed to set the specific model secondary springs. Rod, Babbitt-Poured Knocking Rod, Connecting Interchange Torque Wrench Readings, Eight-Cylinder In-Line Torque Wrench Readings, Straight-Eight Valve Cover Gasket Preparation Valve Gear, Noisy Straight-Eight Valve Guide Installation Valve Lifter Types Valve Tappet Adjusting V-8 Engine Rebuilding "V" Engine Induction Firing Caution 1919 Drip Pan. I guess I was looking at how the system works together. Find aftermarket and OEM parts online or at a local store near you. Most primary rods have a power tip diameter of 0. com and affiliated sites. We supply Quadrajets for Cars, Trucks and Boats, order online or toll free at (800) 526-9952 or (int'l): 714 981 3773 If you don't find your carburetor listed here feel free to call or email and we will find it for you. The most important part of the rod is the power tip. Shop Edelbrock Carburetion parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. The primary and secondary both run fixed jets with metering rods. Determine main jet size. edelbrock afb metering rods $ 8. Rebuilding Qjet, what size jets and metering rods for 308? After a few problems with Qjet that was fresh 3 years ago but troublesome nun the less This morning I ordered a rebuild kit with new plunger (as this seems to be not correct) and electric choke. Quadrajet Kit Installation Instructions. The quadrajet was a good card, just bad mouthed by all the Holley fans. Few people realize that the Q-Jet has a strong racing heritage, particularly in N. The carburetor must provide the proper fuel/air mixture for a wide range of engine-operating conditions, temperatures, atmospheric pressures, and centrifugal forces, while maintaining low rates of exhaust emissions. 825 length 66-83 66-51 66-16 66-54. The best part is, our Chevrolet C20 Pickup Carburetor products start from as little as $179. Once warm it seems fine. 10 7033830 7033830 7033830 7033830 Metering Rod — Secondary 11 7029087 7029087 7029087 7029087 Gaaket — Air Horn 13 7034522 7034522 7034522 7034522 Secondary Metering Rod Holder Kit — 7035344 7035344 7035344 7035344 Air Valve Spring and Cam Kit 12 7031393 7031393 GROUP 3. I'm running a similar engine minus the heads you have, and I run a 72 main jet with a 48 metering rod at 6500 feet. At idle the metering rods, each of which is attached to a small piston, are drawn downward by vacuum into the primary jets and the idle fuel is metered accordingly. Choose top quality brands Edelbrock, Holley, Uremco. They were identical to Rochester's units except the Carter name was stamped into the body. Screw the stud (photo B, 1) into the carb's air cleaner stud mounting hole, then drop the modified AN washer (6) into place over the stud so it seats atop the secondary metering rod hanger (7). Been building Q-jets for a long time. See Photo 5. Most carbs can be enriched one rod with no problem. The biggest thing I found was the secondary flap tension was usually incorrect. Order your parts online or pick them up in-store at your local Advance Auto Parts. Replacement rod part numbers correspond with carb numbers, rods whose part numbers start with 7 fit 70xxxxx carbs. Have a 1973 Quadrajet 7043202 that had its' power piston robbed somewhere along the way. Manually plunging and letting the return spring push them back up, may show you what is happening. If it is an original hanger, chances are the little holes that the rods are suspended from are worn egg shaped. The new procedure involves making a setting to a dimension, rather than by making a specific number of adjustment screw turns. Check prices & reviews on aftermarket & stock parts for your 1988 Caprice Performance Carburetor. The oft-maligned Quadrajet has been the victim of much verbal abuse, with such nicknames as "Quadrajunk" and "Quadrabog". Attempting to cure problems by tuning the wrong variable results in lots of frustrations for tuners and car owners. Quadrajet metering rod chart keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. edelbrock afb metering rods $ 8. 1975 and up quadrajets use a different metering rod. There was a mod we did in installing a nylon sleeve on the secondary spring bar to allow it to travel more easily and of course we set the metering rod heigths. Carter AFB. Remove the tape covering the bleed hole of the diaphragm and connect the vacuum hose. 9L / 300 - Metering Rod Adjustment on Carter Carb - I need help adjusting the metering rod on the Carter YFA 1-V carburetor on my 1984 full-size Bronco (300 cu in. 032 wire dia. Simply identify the part number of the product you have purchased or plan to purchase and enter it in the search field below. edelbrock afb metering rods $ 8. pullor push choke coil rod to end of travel roo should be positioned as shown note: on models. Is the plastic cam on the secondary air door shaft intact, not melted or broken, and lifting the metering rod hanger like it should? Can you measure the diameter of the inlet valve seat. 1906r Remanufactured Rochester Quadrajet Carburetor 4mv 80-89 Big Block 454. The upper step has a larger diameter that functions at idle. I had my car at 2000 feet altitude, and my mixture screws needed a MAJOR adjustment. Notice: Undefined index: HTTP_REFERER in /home/yq2sw6g6/loja. The secondary fuel metering rods are lifted by a cam-actuated hangar connected to the air valve shaft.