Autolite 1100 Carburetor

Autolite 1100 carburetor parts.All technical information including videos assume parts used are our brand. Parts from other sources may not install, or function the same way.
About the Autolite 1100 Carburetor

  • The Autolite 1100 one-barrel carburetor was included on 170″ & 200″, 1963-69.
  • 1963-1967 (some) came with a spark control valve.
  • 1968 – The venturi size was changed to 1.10 and there was no control valve.
    The distributor was changed to use a mechanical advance
    instead of using the venturi vacuum previously.
  • 1967-1969
    – Two diaphragms were used. The added
    diaphragm is used as an anti stall dashpot. Only one diaphragm was used prior to 1967
  • Correct venturi size for Mustangs was 1.10″, or 1.20″
  • When no tag is present, Identification can be done by inspecting the base. You can sometimes find a Ford part number there.

Buy your Autolite 1100 carburetor kit here.

Free Autolite 1100 manuals

1968-69 Autolite 1100

Power Valve

At higher speeds, the engine vacuum drops which causes the power valve to open and allow more fuel to flow.
Autolite 1100 Choke

Do not remove the power valve assembly when rebuilding, but it does need to be free to easily move up and down. For sticky power valves spray liberally with silicon spray lubricant and work it up and down until it is free. Worst case is you will have to remove the clean out plug on the top of the carburetor so that you can get at the cylinder for cleaning. You will need a new clean out plug, or patch up the old plug with JB weld (don’t get any inside). A surge at high speeds (steady throttle) might indicate a power valve
problem. Change the power valve timing to open sooner (at less throttle opening) by adding additional calibrating shims, on power valve rod (see illustration above). If less than 4 shims found on rod, add 4 shims; if more than 4 shims found on rod, add fewer number. Total number of shims on rod must not exceed 8. These shims are not produced and you only want to take the power valve apart as a last resort.

Autolite 1100 Main Jet

This is where the Autolite 1100 main jet resides. Due to the difference in gasoline, the jet size that was originally installed on the 1100 isn’t that relevant anymore. Be sure you are using the correct jet size, otherwise you chance ruining your engine. Test your main jet
by running your vehicle for 20 minutes at a sustained speed. Pull a spark plug and look at the color. Gray is perfect. White means you are too lean and need to move up one size.
Black is too much fuel and you need to move down one size. Do this one size at a time until you get a good gray colored plug. This test is only valid when your engine and electrical system are good condition.
Autolite 1100 Jet

1966 Rough Idle & Poor Fuel Economy Correction.

This condition may be caused by the fuel bowl vent valve being out of adjustment. Check and adjust the vent valve each time the carburetor idle speed adjustment is made. 

Buy your Autolite 1100 Main Jets.

Did you lose your check weight?

Autolite 1100

These are no longer available, but you can make your own. Use a 3/16″ aluminum rod, cut 9/16″ long. File the end a bit as pictured. Weight will end up being about 1 gram.

Watcha video about On The Bench Adjustments

Watch a video about rebuilding the Autolite 1100 carburetor. Part 1 – Teardown

Question
I seem to have a problem with my carb that I rebuilt recently. It is a C8PF-D on my 1963,170 cu in Falcon with auto trans. Its a manual choke and has the spark control system and a diaphram on each side. We adjusted the mixture screw till it ran nice and took it for a small drive. Upon returning it would not idle hardly and was running very rough. We adjusted the mixture screw again and it started runnning properly agian. The next drive we took it ran great, but when we arrived home the same rough running and no idle was present agian. It acually died on us instead of idling. My question is if the mixture
screw is backing itself off due to vibrations etc.? Could the screw or spring be worn out or could it be the carb hole and threads worn out? I hope you have run across this before and can point me in the right direction. I thought about loctite to hold it, or maybe a new
spring and screw.

Answer
1st off don’t use anything on the threads. That would probably ruin the carburetor. It does seem the screws are moving from vibration. I would replace the idle mixture screw and spring.

Watch a video about the Autolite 1100 Flooding Troubleshooting

 


I am having an issue with my autolite 1100 stumbling when under way. Everything is fine at rest. I notice if I sit on the fender and rock the car the engine begins to stumble. When I set the float level I used the Fuel system service instruction worksheet provided in your rebuild kit and it stated to set the float level to 1 – 3/32 for my 65 Mustang 200 A/T, which I did. Do you think its possible I would need to set the float level higher or do I possibly have something else going on? Fuel pump filter and strainer are all 2 months old. As is the carb rebuild.

The 1st thing that comes to mind is that the flow bowl is warped. Check my video about fixing the 1904 with heat. Same idea.

Recent Posts

Why the Tucker Was “The Car of Tomorrow”

The Reason Why the Tucker Was “The Car of Tomorrow”
It’s sad to see great ideas suddenly coming to a sudden death due to different political, economic or financial issues. While our free world tends to believe everyone should be able to pursue their dream, this isn’t always the case. A good example for such a sad scenario was Preston Tucker, the designer and developer of Tucker automobiles.
How it all started

Tucker_torpedo_patent
Since the Second World War was over, the globe was ready for a change, for new developments and out of the box thinking. Everyone in the US was waiting for new vehicles to buy; however none of the three leading automakers did something to fulfill the ongoing demand.
The newest vehicle someone could own at that particular moment was at least 7 years old, as nothing new was produced since 1941.
This particular idea crisis led to the growth of smaller automakers which, although were working on providing new models, many of the features were still inspired from the already existing products. This is where Preston Tucker had the advantage, as he designed a vehicle with a design out of its time.
A completely new car

Tucker
Tucker brought up a car concept built from scratch. It included a flat-6 cylinder rear mounted engine, rear wheel drive and independent suspension. Some of these features may actually sound as being contemporary, but this was all happening almost 60 years ago.
For safety purposes, a perimeter frame surrounds the whole vehicle in order to absorb crash forces and a roll bar was included discreetly in the roof. The steering box is strategically positioned behind the front axle of Tucker, to protect the driver in case of an accident.
Windshield and windows were made from shatter-proof glass designed to be easily removed in case of an unfortunate accident, facilitating the emergency exit of the driver and passengers.
When saying that Tucker 48 was a new car, it is not only about the new features included in the limited 51 piece series. 1948_Tucker_Sedan_at_the_Blackhawk_MuseumIn fact, every car was different from the one before and the one going to be built after her. Preston Tucker improvised on the move, adding and testing new concepts as Tucker 48 vehicles were rolled out the factory.
Difficulties
The uncover of the first Tucker 48 prototype in Chicago back in 1947 was doomed in front of over 3000 people as various issues popped up in the last minute and couldn’t be fixed in time for presentation. Among these, suspension arms popped under the heavy weight of the vehicle, the engine was incredibly loud and only developed around 80hp of the promised 150.
Although the original torque converting gearbox mounted on the first Tucker 48 prototype had no mean of going in reverse, Preston Tucker followed his intent of building a new transmission system. With help from Warren Rice, the inventor of Buick Dynaflow, the Tuckermatic was invented. It consisted of just 27 parts, double torque converters reducing everything to just one forward and one reverse gear. Three versions of the Tuckermatic were built: R1, R2 and R3. The first one never saw its way onto an engine as it required the motor to be turned off in order to switch gears.
The fall
Since the need of capital was constantly increasing as Tucker 48 was moving on with development, Preston Tucker started selling Tucker 48 accessories through his Tucker Accessories Program even before the vehicle was finished. This caused an investigation by U.S. Securities and Exchange Commission and the United States Attorney.
Although charges were eventually dropped, there was enough negative publicity to drown Preston Tucker’s project and cause only 51 Tucker automobiles to see the light of day. Fortunately, many of them are still in great condition and can be seen in various auto shows.

  1. Route 66 2 Replies
  2. Carter Thermoquad 4 Replies
  3. Floats 2 Replies
  4. Is Ethanol Good for my Car? 3 Replies
  5. Adjusting the Idle Mixture Leave a reply
  6. Mustang You Gotta Love 1 Reply
  7. Mobile Responsive Web Store 1 Reply
  8. Rochester 2 Jet Fuel Percolation 6 Replies
  9. Car Stalls When Putting in Gear Leave a reply