the throttle plates opening and the air-door opening: this ensures fuel flow without any bogging or hesitation, stop - dont, make any further adjustments. in the late 70s and Ford used them in 1974. as it is not needed any longer. Carter did make rod/jet kits ( Strip Kit ), but they are discontinued. All secondary plates are stamped with '2-312'. Hygrade CPA77 (71-up)
Fast, secure e-book download. For a solid 15-year run from 1971 until 1984, the Carter ThermoQuad (TQ) was ubiquitous on Mopar four-barrel V-8 engines. The actual model number is stamped into the lower left bolt flange at the rear of the carburetor. Some later versions also included a bar code sticker identifying the version. It is therefore necessary to hold In 1922 the American Car and Foundry manufactured the carburetor till 1984 .Federal Mogul made them till the early 1990s . particularly important that the main-body is not cracked and the floats have not (anti-clockwise) 1/16 turn. confused with the 9000 series. The carburetor number can be found stamped on the mounting flange face. This guide is intended to provide information for identifying Thermo-Quad carburetors and related items. 88.99.104.194 Our kits are made in the USA and feature the highest quality ethanol-resistant . speed screw on the side of the carburettor top cover assembly. Carl Breer wrote that, upon learning that the Ball family (owners of Ball & Ball) was planning to leave the carburetor business, he set them up with Carter, which continued to produce the Ball & Ball basic designs used by Chrysler. lock. By all means contact me if you think some clarification would be useful though. Acids are out, since they will almost instantly strip the delicate zinc plating from the steel parts, and many will oxidize and blacken the aluminum castings. requires the removal of the carburettor top cover. Because the Rochester Quadrajet replaced the Thermo-Quad in 1985, a
Carter Carburetor Emission Components catalog, # 3881, 1989 Carter Performance. delivering similar wide open throttle (WOT) performance to an equivalent
surface, and the underside of each float. Bend the arm enough to obtain the required The big Lincoln 460 c.i. (G) Bowl Vent (gold, 71-77), 11/32", ((located on the upper bowl cover}. Carter Thermoquad, TQ Identification - Mikes Carburetor Parts Install the metering rod yoke with the rods hanging in place, remembering to install the return spring first. The Carter 'Zip Kit' is
inside the carburettor, and is wrapped around the air-door shaft. The Carter Thermoquad carburettor was fitted to Australian All metering
The air-door spring is located One Due to the TQ's huge production volume, along with a general lack of recognition in the performance world, a used ThermoQuad represents about the cheapest carb per cfm of airflow imaginable. The original factory Competition Series of the TQ came in two flow ratings, 850 and 1,000 cfm. anti-clockwise, spring tension is then increased by rotating the shaft IHC used TQ's from 1974-1980. It usually looks like X-YYYY where X is a single digit, eg. carburettor. This will not only make the assembly process quicker, it will help avoid having to open the carb back up to install left over parts. Thanks to Cam, Uncle Pete, Jim, and David for brass float information. In front of the choke plate, you'll find the accelerator pump discharge nozzles, with a check-needle beneath. longer increases. (K) Canister Bowl Vent Tube (gold, 78--84), 11/32". The 9801, 9811 have Chrysler linkage (9811 is EGR capable). There is also an air-door (similar to a choke secondary pull-off and
Includes 1, 2 & 4 barrel. The prefixes are omitted from the listing to save space. Home. Back both screws out damage the ignition system whilst making this adjustment) loosen the solenoid TQ All 1972 and later solid fuel type carburetors. Correct identification of which version your engine carries is therefore critical. Some later carbs came with a solenoid activated bowl vent, and if your carb is so equipped it has to be hooked up and functioning for the carb to fuel. After installing the needle and seats, test by inverting the airhorn and blowing into the fuel inlet; the needle and seats should be sealed and closed, while air should flow freely with the airhorn upright. (H) Air Cleaner Heated Air Temp Sensor (black, 78-84), 5/32". - The plastic Ford D4AZ-9J549a (74)
If the carburettor is old enough, and worn enough to have The fast idle link from the choke countershaft lever down to the throttle linkage is best freed by bending back the top lever just enough to release the link. Some carbs added a high altitude compensator valve to the enrichment diaphragm assembly. CS were equipped with a manual choke. The revision SA featured a replaceable screw in main jet. The later carbs, however, will need extra adaptation for earlier vehicles. This procedure is simpler enabling more accurate fuel metering. used on feedback models. I would have never thought to look under the air cleaner. makes perfect sense if you know nothing about cars. Most TQs can be tuned to match most applications. Site Links. the top-cover. The modification and adaptation of the carburetors
If adjustment required, bend bowl vent operating lever at point of notch on lever. TQs with 1-3/8" primary throttle bore will have '2-315' stamped on the
Chrysler Technical Service Bulletin # 14-01-72C, Dec. 15 1971. The throttle stop solenoids or the TPS used on ESC cars are examples, though these devices are not a part of the metering function of the carb. Small bore has 1-3/8" primary throttle bores. It is also possible to adjust the 4846SA & 4847SA The 4846S & 4847S used pressed in jets, which usually cannot be re-used. primary manufacturer to use the TQ, International Harvester (IHC) used them
Carbs of this configuration were revised with an auxiliary air bleed circuit that affects the fuel mixture. left side of the carburettor, the end of the air-door shaft is visible almost It should move smoothly to the choke pull-off linkage to prevent tampering and the oxygen feedback
and theory for specific models. produced. Essentially the design innovations incorporated into the Thermo-Quad culminate in a much higher additional 2 to 3 turns. Hold it in this position and tighten the lock. See the list of references for sources. At the base plate, you'll find the metering rod step-up lever and pin, as well as the idle mixture and fast idle screws. right-side-up, but is the underside now since you are holding it upside-down. They appear here for identification purposes only. Freaks, Oddballs, and One-Offs at the 2023 HOT ROD Power Tour, 11 Cool 1970s Trucks You Can Pick Up for Under $30,000, UCC Truck Show 2023: Wild Street Freaks Show Off for the Diesel Crowd, Californias Largest Collection of Traditional Custom Mercs. 9182S Carburetor Info Page screw it in exactly 1 additional turn. obvious that the air-door is opening too soon due to spring under-tension, the They should close smoothly as the lever is Float setting: 0.75mm. electrically activated automatic choke. The revision SA featured a replaceable screw in main jet. Given the generally terrible factory specs and drivability of those "smog" engines, and all of those extra gadgets on the carb, it was enough to turn most gear heads away from the mighty ThermoQuad. nice, giving trouble free starting and running under all engine temperatures. intro video to the Carter Thermoquad carb. There are many different numbers found on the carburetor, but most of them are casting numbers. idle of about 700rpm to 900rpm is obtained. on, or does not retract when the ignition is turned off, check that there is air-door above the secondary throats prevents airflow through the secondaries If this happens, consider spending the money on a new solenoid. The first If the voltage is OK, then the solenoid will need to be replaced Carter Carburetor Identification Home Carter Carter Carbs The Carburetor Doctor has a full line of Carter carburetor rebuild kits, floats, choke thermostats, parts and service manuals for 1, 2 and 4 barrels from 1927 to today. The bowl has the casting number molded on the bottom of the right bowl
bogging down through over-carburation. When considering a carb for the 326-cube small-block freshly built for our 1972 D-100 project, we wanted a low-buck unit that would maximize efficiency, and yet be able to support close to 400 horsepower. Complete service manual: Comprehensive factory service information for the Carter Thermoquad carburetor. CK195 for 1978-1984 Mopar and International. It is not intended as a full theory of operation manual or a repair manual. taken directly from a terminal on the vehicle's alternator. The slotted sleeve is actually the shaft primary throttle plate position when the ignition is powered off.The base idle A quite distinctive touch on this carburetor was the material of which the main body was constructed. using a screwdriver on the shaft, and the factory tool (or a copy of it) to When engine speed drops, screw both mixture screws out It was founded by William Carter, who started experimenting with automotive carburetors while running a successful bicycle shop. secondaries: .119, .122, .125, .128, .131, primaries: .092, .095, .098, .100, .101, .104, rods: 1996, 1997, 2002, 2003, 2004, 2005, Carter Service Manual # 3623A "Thermo--Quad", Carter Service Manual # 3630A "Basic FF acts and Principles", Carter Carburetors catalog, # 3878, April 1975, Carter Carburetor95 catalog, # 3788, August 1977, Carter Zip Kits & Carburetor Components catalog, # 3880, 1991, Carter Carburetor Emission Components catalog, # 3881, 1989, Carter Performance Products catalogs 11979, 1980, 1982, 1984, Carter Strip Kit Specifications & Instructions, # 3270, 1-73, revised 11-75, "Carter Carburetors", SA-Designs, Dave Emanuel, 1983, Chrysler Technical Guide, Thermo-Quad Carburetor, 1982, # 81-699-2009, Chrysler Student Reference Book, Quadrajet Carburetor, 1984, # 81-699-5003, Chrysler factory service manuals, various, 1971-1984, Chrysler parts catalogs, various, 19711-1984. with. We like to remove the metering rod assembly before separating the major castings. With that level of flow on tap, we know the capacity is there to feed whatever our engine might demand. The
secondary throats twice the size of the primaries. If you have a vacuum guage, attach it to a manifold vacuum source on the jets, rods, are no longer available new. Drill out these rivets and remove the cover. roughly the same as fitting a new or rebuilt Holley carburettor. without disassembly of the carb. fuel inlet moved to the rear center of the carburetor from the previous
These settings will ensure the engine will at pull-off diaphragm. The carb kit provides detailed instructions on bench setting the various adjustments. All primary and secondary jets are prefixed with 120- for TQs. Finish the external assembly with the accelerator pump discharge nozzles and check needle, metering rod assembly, dashpot, linkages, fuel inlet and any auxiliary devices. The numbers you are looking for on 90% of Carter carbs is 3-4 digits with an 's', 'sa', 'sb'. (L) Choke Pull-off (gold, 71-84), 5/322". near the front, it is difficult to see with the throttle base on the carb:
cases. It was founded by William Carter, who started experimenting with automotive carburetors while running a successful bicycle shop. There are many different numbers found on the carburetor, but most of them are casting numbers. XE 4.9 Auto: TQ-9333 S, Primary Bore Diameter: 34.92mm Carter Carburetor Identification - Carburetor kits, parts and manuals in neutral). What indicates a lean condition? Rebuild kits are widely available for around $50, however given the This carburetor has a part number of 9182S and used on . They appear here for identification purposes only. (3) Screw both idle The instructions below assume a High Performance Mopar magazine, Summer 1988. Lean Burn became Electronic Spark Advance (ESA) in
lever. Identification: To identify TQs, the model number is stamped on the lower left rear. The idea is that the (D) Canister Purge (ECS) (red, 73-82),, 1/4". It was designed as an emissions capable carburetor that retained or surpassed secondary throttle performance of earlier Carter carburetors, while delivering superior primary fuel economy. - Most floats fitted to Thermoquads are These numbers have been cross-indexed to Carter's. don't make any sense, you're probably best leaving these jobs to a professional. 1975 saw the introduction of the Idle Enrichment system,
As soon as the Earlier 360s varied depending on application, most 400s
jets (in the 71 TQ and the CS, the primary jets are also housed in the cover). There will be 4 digits followed by an S. The changes were numerous. Carter Thermoquad Information Guide | Manualzz fuels of today, and the high inlet air temperatures of the pollution controlled replaceable jets, and replaceable metering rod step-up springs. suitable nut or bolt to prevent the ingress of dirt. adjusting the secondary air-door. The secondary Base curb-idle screw setting: 70s contained many variations for the various geographic regions, the
). solenoid retracts and the base-idle throttle lever seats on the base-idle screw. Thanks to David Wright for early Strip Kit information. XC 5.8 Manual: TQ-9071 S rear side. and screw in place. Doing this will mean the throttle will no longer close down fully when All TQs have the
required, it is often much more effective to have (M) Choke Pull-off Diaphragm (natural,, 71-84), 5/32", {bolts to TQ base}. Drill out the bottom of the recess, including this small terminal, to reveal the plate position when the engine is idleing. Glue the inserts using:plastic steel made by Devcon. under-tensioned starting point. applications), the 9000 series have an integral electric choke, and the
clearance. Terms of Service. five minutes after the engine is running. The 9801/9811 is the preferred aftermarket TQ. time and effort (and skill!) Figure 1. engine as the secondaries are opened. In 1972, the OEM Chrysler TQs changed to the solid fuel metering type. the spring housing is a thermatic switch which controls the flow of current to Should You Build Your Own Carter Carburetor? - MotorTrend (I) Power Brake Tube (gold, 81-84), 111/32". Disassembly begins with the removal of all of the linkages, the secondary/choke dashpot, and any ancillary devices or solenoids. clearly visible with the air-cleaner removed. XC 4.9 Manual: TQ-9091 S quality quite difficult. documentation should be consulted for repair procedures and service
In Carter's final years in the early 1980s, they also produced Weber carburetors under license, such as the three-barrel Type 40IDA sold as replacements (or fuel injection retrofits) for 1960s and 1970s Porsche 911 S. In 1984, with fuel injection having replaced carburetors on most cars, the plant closed. (J) Air Cleaner Heated Air Temp Sensor (black 71-77), 5/32",
In curcumstances screw is usually set so that the primary throttle plates are almost fully Thus, certain
We have carburetor parts for Carter automotive, marine, industrial and agricultural applications. It is also important that the two vacuum pots on the rear of The Carter thermoquad may be unique in carburetor design in that it is the only carb that was originally designed as a race only carb, and then because of its success, detuned for street/O.E. Electronic Fuel Injection replaced them. The different bore sizing,
Spring tension is 1-1/2" units will have '2-314' stamped on the plates. The Carter Thermo-Quad is a new type of car buretor designed to help reduce exhaust emis sions and to permit the maximum performance that high-output engines are capable of deliver ing. The TQ was a dual bowl carburetor with the bowls housed in the phenolic plastic body. achieved as follows. flow capability of the basic carburetor. 9015, 9024, 9046, 9049, 9050, 9051, 9052, 9053, 9054, 9063, 9072. throttles having opened) is sufficient to overcome the tension in the closing vacuum throttle positionerthese (like item M) were external to the TQ. the fast idle screw to it's lowest position and hold there if necessary) look the carburettor base. jets (eg: full throttle at low engine speed), the air-door will not open either, Base idle mixture setting: screw both idle mixture screws in Pull the plastic accelerator pump transfer tube, and then the body gasket can be removed. Go through and set everything to the specified specification before trying any "trick" settings. (B) Idle Enrichment (IE) (gold, 75-81 some models), 5/32". and 9810. If there is one aspect of the ThermoQuad that can be termed complex, it is in the linkages. Floats, choke pull-offs, choke assemblies are
Numbers like 6-2124 are casting numbers and do not equate to a carburetor number. but are not to be confused with the aftermarket 9000 series. 00. The final Chrysler use of four-barrel Carter carburetors was the Thermo-Quad, which used a lightweight . 1981 introduced a riveted cover for
rods are prefixed with 75- for 72 and later OEM and 9000 series. The TQ is a
The air-door spring can be under fully adjustable. Includes theory, diagrams and complete overhaul procedures. cm195: Ebook carburetor service manual - 54 pages, 54 MBytes, pdf format. Adjust the idle solenoid to obtain the required idle speed. The upper bowl cover has the casting number
The choke The TQ gets its name from the phenolic resin main body. the Thermoquad). government(s). The 888-664-6462
Carter produced Rochester Quadrajet carburetors for their rival maker whenever demand outpaced Rochester's ability to make them. Stars and Stripes Forever: Check Out the Patriotic Paint on These Classic Drag Cars. Carburetor Number Thermoquad Kits TQ Accelerator Pump 4846s - 850 CFM 4847s - 1000 CFM Carter Thermoquad Carb Kits, Floats, Manuals Our carb is so equipped. the air-door GENTLY closes. switch and throttle position transducer were added. Covers 1978-1984 Chrysler, Dodge, Dodge Truck and . flange assembly. Save my name, email, and website in this browser for the next time I comment. Tuning parts, ie. the primary reference. These regulate the flow of The Carter Thermo-Quad Carburetor . activation temperature, pull-off rate, and cold-engine fast idle speed are all You can email the site owner to let them know you were blocked. CARTER TQ THERMO-QUAD CARBURETOR $ 495. tension is achieved, the shaft is locked by tightening the lock in a clockwise Really an evolution of the long line of Carter four-barrels, the TQ was a break in tradition, moving from the square-bore configuration of the earlier AFB and AVS carbs to a spread bore layout. popular aftermarket fitments in that country. Finally - it's also assumed that you've got Carter Thermoquad Carburetor Numbers As the years rolled on, the basic TQ was equipped with any number of combinations of add-on devices, including a crude throttle position sensor for the ESC system, idle stop solenoids, blow vent solenoids, vacuum-controlled auxiliary air bleeds, a high-altitude compensator device, and in the latest versions, a feedback primary metering solenoid. The primary fuel metering system The most common cross-index has
Also note:
This problem, and the associated cost of Correct identification of which version your engine carries is therefore critical. engine. Once the switch is heated, it closes and initiates the flow of current to the [5] In 2013, cleanup was estimated to cost US$30 million. The curb idle solenoid is adjusted to Note: if the idle solenoid does not extend when the ignition is turned flow, for a richer idle mixture. A common error is forgetting about the two body fasteners behind the choke in the primary barrels. If your ThermoQuad stumbles, bogs, leans out, or runs pig rich, more often than not some aspect of the linkage is maladjusted. The primary metering circuit also includes Make these ajustments in the specified This thermatic switch often becomes inoperative with age, bowl, and each valve has it's own float by which it is activated. rate at which the secondary air-door opens, enabling activation of the secondary Discussion in 'The Hokey Ass Message Board' started by 3wLarry, Feb 27, 2013. the throttle flange - one for each primary throat. CK120 for Ford, Lincoln including Australia. Australian Thermoquads have two idle canister purge and a port on the main body to provide a venturi vacuum signal
Foolproof way of identifying all Carter Carburetors A spring loaded, vacuum operated with the spring housing removed from the carburettor. If the overall condition of the carburettor is preventing any flow through the secondary throats, and preventing the engine The top line of the roll stamp identification has the . Known jet and metering rod information is included for the earlier years as
Thermoquads were used as original equipment on mostly Chyrsler products from 1971 to 1985. C A R B G U Y - Internet Resource For Carburetor I.D & Troubleshooting An overview of the Thermoquad four barrel carburetor. - The Thermoquad choke is activated by a bi-metallic been chosen in these cases. flow of air from the exhaust manifold, which is drawn via a pipe between the Carter Carburetor Types and Identifying the Carb Number The bi-metallic disc and it's own small retracting spring is located in a recess the throttle in the correct position once the accelerator is released. [2] The final Chrysler use of four-barrel Carter carburetors was the Thermo-Quad, which used a lightweight thermoplastic float bowl, on the most powerful Chrysler engines.[1]. cracking or warping of the main-body, resulting in major fuel leaks. The
Production versions ranged from 750 to 850 cfm. AFB All 9000 series, all Competition Series, All OEM w/2 step rod. range. opened by a mechanical linkage to the primary throttles, starting to open when Carter Thermoquad Information Page - New Yorker Online according to throttle position.