What are The Best Motorcraft 2100 Carburetors?
The following carburetors are made for the MC 2100 replacement.
Geluoxi 2 Barrel Carburetor Carb 2100
This capable 2V carb is compatible with almost any application for the MC 2100, Autolite 2150, and the 2100 A800. Using the Bernoulli system (where the pressure drops as the mixture goes through the venturi), the Geluoxi is one of the easiest carburetors to install and use.
The online parts company is based out of China and makes a wide variety of auto parts. The parts are sold through American distributors through Advance Auto, Wal-Mart, Amazon, and others.
- Venturi Size 1.08
- Fits Ford Trucks (1973 - 1986) with electronic choke.
- Durable Carburetor
- Easy to Install
- Online ordering.
For more information on the Geluoxi 2 Barrel Carburetor, please see the Amazon website.
Thundermingo 2 Barrel Carburetor Carb
Thundermingo is a Chinese company that produces many auto parts, particularly carburetors. The carb has a one-year warranty and is designed to replace the MC 2100, Autolite 2150, and A800 OEM. It has a pretty high ranking on Amazon, scoring in the top 50 with a 4.4 rating. One of the best things about this carb is that it is made of polished steel and looks great sitting on top of the engine. Most reviewers mentioned how easy the carburetor was to install and were pleased with its performance.
- Venturi Size: 1.16 (should work for 1.08)
- Electric Choke
- Easy to Install
- Polished Steel
- One Year Warranty
- Does not fit some larger V8s - check specs to ensure fit.
For more information on the Thundermingo 2 Barrel Carburetor, see the Amazon website.
Auto Parts Prodigy 2 Barrel Carburetor
The two-barrel carb is the number one bestseller on Amazon. It bolts on and is an excellent replacement for 2100 and 2150 carbs. The product must be run with a fuel filter before the inlet and has .049 jets. Autoparts Prodigy is a NY-based family business that prides itself on keeping classic car enthusiasts happy. The carb weighs about 6.5 lbs which is light and fits several different vehicles, like the ‘74 Bronco with the 302 ci engine.
- Venturi Size: 1.16 (should work for 1.08)
- Primarily built for Jeep engines
- Easy to Install
- Does not fit some larger engines
- Complaints about lack of directions
- Some reviewers had to drill out jets.
For more information on the AutoParts Prodigy 2 Barrel Carburetor, see the Amazon Website
Mophorn Carburetor Heavy Duty 2100
Mophorn, another Chinese company making auto parts. This HD 2100 carburetor is made with a high-density aluminum and zinc alloy construction that resists heat, corrosion, and deterioration. The adjustable gasket that comes in the kit allows for the unit to bolt right onto bolt holes as the stock OEM carb. The product has a good-sized fuel bowl and is adjusted, so little tuning is needed. The fact that it is polished makes it an attractive-looking heavy-duty carb for a classic rebuild. The product has a 4.3 rating on Amazon.
- Aluminum and Zinc Alloy
- Fits many stock engines
- Works with OEM part numbers 2100, 2150, and A800.
- Aluminum alloy resists rust
- Proven track record
- Not USA made
- Not the most expensive, but not the cheapest either
MostPlus 2100 A800 Carburetor
This is the cheapest carburetor that we reviewed, but it is an excellent value for the price. The carb is made from an aluminum alloy, has excellent heat resistance, and the two barrels have been strengthened to prevent leakage. It has a 4.1 rating on Amazon and is also on several other review sites as among the best for classic rebuilds. The carb is made in China, although MostPlus is headquartered in Hong Kong. They do process returns; however, overseas refunds can be difficult.
- Venturi Size: 1.16
- CFM 300
- Easy to Install
- Less expensive
- Compatible means might not fit - see your owner's manual or manufacturers specs
- One seal - would like additional gasket
For more information on the MostPlus 2 Barrel Carburetor, see the Amazon Website
What is the CFM of a MotorCraft 2100 Carburetor?
The CFM (cubic flow per minute) is how most carburetors are measured. The ranges of CFM on the Motorcraft 2100 vary from 190 - 424. All of the carburetors that we rated had 300 CFM ratings.
What is the Difference Between a MotorCraft 2100 and a 2150?
Ford had a good idea that the emission regulations the government had recently imposed on internal combustion engines would just keep getting harder to meet. They designed a 2150 version of the carburetor to help address the twin issues of fuel economy and emissions that were being hammered almost daily in the press and across the country. The 2100 carburetor was built for raw power, and the 2150 for finesse.
How Does A Carburetor Work?
For a car to run effectively, it needs three basic things; the right fuel, clean air, and a simple spark. When these items are combined in the right proportions inside an internal combustion engine, then power can be generated. The engine produces enough energy to move the wheels, and you move from point A to point B. A carburetor provides a mixture of air and fuel sent into each chamber so that the spark plug can ignite it and create energy. You could say that the carburetor is where the process of combustion starts.
The carburetor sits on top of the engine block under an air filter housing to ensure clean air is drawn into the engine. Its position is in a prime spot, so it can capture as much air as it needs to get the process of internal combustion rolling.
A carburetor is made of several parts. There is a bowl at the top that gives the air room to congregate when needed, and the airflow is controlled by a choke valve that opens and closes (depending on how hard you push the accelerator).
Beneath the bowl is a narrowing of the opening (venturi). This reduced area is essential for the carburetor to work effectively because as the air passes through, it creates a vacuum (lower pressure), which sucks fuel into the unit to mix with the air drawn into the cylinders.
Fuel is pulled from a little float chamber on the side of the carburetor (there is just enough of it to prime the engine). A fuel line from the gas tank runs through a fuel pump and fuel filter into the small chamber, which connects to the carb with a small tube called a “jet.”
The jet is a part of the venturi (the narrow part). As the vacuum from the air rushing in increases, gasoline gets sucked into the venturi as a spray and mixes with the air. The gas molecules of fuel and air are swirled together, and this is the chemical combination that travels into each chamber as an intake valve opens to let it flow in. Each cylinder has a piston, and the downstroke of the piston acts like a plunger. (Think of the last time you had a shot. As the doctor pulled back the plunger of the syringe, the medicine was drawn into the tube. The same principle works for the downstroke of the ICE).
The lower-pressure mixture travels into each chamber through intake valves as the piston downstrokes. Then, as the piston rises, the gas mixture condenses, and the spark plug fires. It ignites the fuel mixture, creating the power the vehicle needs to move forward.
Exhaust gasses are exited through other valves that channel the burnt carbon gasses out of the exhaust manifold and through your tailpipe. Your car brings clean air and fuel into the engine, sending the bad stuff into the atmosphere.
How Is an Accelerator Connected to a Carburetor?
The accelerator pedal of the car is connected to the carburetor by a cable. On older carburetors, that cable is hooked directly to a lever that pulls the intake throttle open. The more that lever gets pulled back, the larger a vacuum is created, and the more fuel and air are drawn into the chamber. The process described above happens faster, resulting in more power to turn the drivetrain faster.
Some carburetors have electric chokes, so the opening of the throttle is done electronically (in response to the accelerator being pushed down). If you plan on rebuilding a car, it is a good idea to know what kind of carb, (electric choke or not) they recommend.
Does the Size of the Carburetor Matter?
Single-barrel carbs were all the rage and were utilized for decades in ICEs because there wasn’t much need for excessive power. As V6s and V8s began to take the automotive world by storm, replacing inline-cylinder engines, owners continued to push for cars and trucks that could go faster. Car companies raced to offer ways to get more fuel/air that could be sucked into the engine to create a bigger bang.
Single barrel carbs morphed into two barrel carbs giving way to 3 and 4 barrels units as engine sizes continued to grow. Eventually, the carburetor gave way to electronic direct-injected units beginning in 1983.
Why Aren’t There Carburetors on Cars Today?
With electronically controlled fuel injection and GDI (gasoline direct injection), the location of where the fuel entered the system changed. Instead of being sucked into the air through a carburetor, the fuel port (jet) was situated to spray inside each chamber. The fuel would squirt onto the top of the piston, and as it lay on the piston, it would ignite as the spark plug fired. Engineers found that the longer they could keep the fuel in liquid form, the bigger bang they could achieve. Ford calls their version of GDI engines their Ecoboost. Today most ICE engines have some form of gasoline direct injection.
About THE AUTHOR
My name is Matt and I've been around cars all my life! I have owned and worked on many different classic vehicles, so I started this site to share my experiences. If you're new to classic cars, then this website is for you.Read More About Matt Lane