These two carburetors are different although they look the same. For those that may be unaware, an O-ring is called an O-ring because the item is in the shape of a ring, and if one were to cut the O-ring, one would observe that the cross-section of the material would be in the shape of the letter O. The metering rods are of a step design and are controlled by vacuum and metering rod spring action. Carter claimed that fuel temperatures in the bowl were reduced from 25 to 28 degrees F. That is what Mike Riley has accomplished with the Carburetor Shop, Inc.
Some have two steps, some have three steps, and a few have four steps. These are: A the early production Competition Series with press-in jets B the later production Competition Series with screw-in jets C the 1971 Chrysler units D everything else Do not attempt to interchange metering parts from the 4 groups. Yes, if one has the proper set of drills, and knows the correct size, one may drill out the idle jets. Many of the engineering editors are personal friends of Mike's. You can change the action of the accelerator pump by re positioning the accelerator pump linkage. We know when they leave here they are ready to go to work for you! It was founded by William Carter, who started experimenting with automotive carburetors while running a successful bicycle shop. The accelerator pump controls response when pressing down on the gas pedal.
Phone lines open 8:00 a. What's not so easy is to become a full-fledged specialist and build a reputation that will follow you through the years. Certainly, if one has all of the specialized tools, parts, and the knowledge of which to use. For example the Pontiac will want a significantly larger idle jet pressed-in than the Chevrolet. So I now use this designation when asked. Please compare your float with our photo to make sure it is the float your carburetor needs. Depending upon the vacuum your engine produces different colours are used to tune the carburetor.
If you have any questions about your application, please give us a call; we're always happy to hear from you. We accept credit cards and paypal only. My collection of metering jets from a strip kit. This is the 16-99 metering rod and a package of blue springs not used in this application. It was hard to believe the amount of flaking residue inside this Carburetor. Issue 2 — This one gets even professional mechanics, which have not been trained on thermoquads. Obviously, the name came from the thermoplastic bowl.
We've sold thousands on ebay. We have found one has many fewer issues if one simply does a little homework and starts with a carburetor more or less designed for ones application. This may be done in a few rare cases; but generally this is unsuccessful. Therefore, if one knows the carburetors identity, one would know what castings would be present; but the reverse is certainly not true. Tried of hard starts or a sticking choke? If you have any questions about your application, please give us a call with your carburetor number; we're always happy to hear from you. Note that in no case does one type replace the previous type. Chevrolet used it on the 275 horsepower 327.
A total of 428 different thermoquad models were produced. Reduced fuel temperature translates into higher engine efficiency. At higher speeds and less vacuum the rods pull up from the main jets allowing more fuel to flow. Don't know what you need? In part 2 below we will reassemble the carburetor that was taken apart in part 1, and share tips on how to make sure it goes together correctly the first time. This kit does not come with instructions. Don't know what you need? All of our carburetors are completely disassembled and cleaned with an ultrasonic machine. We have only one location.
I do not know the current ratio, but X-rings used to be approximately 20,000 times the cost of O-rings. Beginning in 1957, at least two different types were produced in all years through 1984. First, there are 4 separate and distinct versions of the thermoquad. Failure to observe this difference in floats may lead to carburetor flooding issues. We offer Electric Choke Conversion Kits and Hot Air Choke conversions. They were identical to Rochester's units except the Carter name was stamped into the body. Carter Four Barrel Carburetors General Information Carter produced 4 different styles of four-barrel carburetor.
We use the highest quality American made components available. Even if the float arm is bent to achieve the specified adjustment, the buoyancy change may cause a flooding issue. Springs are available in several strenghts and are colour coded — available in Blue, Yellow, Orange, Silver and one other colour. This particular carburetor is quite rare being from a stock Studebaker 289ci R1 engine. The thermoquad, as stated above, was a spread-bore design, consisting of three major castings: an aluminum throttle body; a thermoplastic bowl; and an aluminum airhorn. Does he admit to his buddies what he has done? I am still amazed how well the carburetor looks after buffing out all the parts… it really looks and performs like a new one.
The second casting is the bowl cover or airhorn. Most of these were for racing only. Float must be parallel to the edge of the carb top. Finished front view of 3506S Carburetor The carburetor looks fantastic, quite a difference a day makes. Upgrade to an electric choke and make your life easier! Punch the gas pedal and the secondaries will open. Carter Carburetors - click Carter Carburetor Rebuild Kits - click Carter Carburetor Company History Carter Carburetor Company in St. .
This worked well for Carter in testing, but after about 3 months in the field the O-rings began to leak. Many enthusiasts are still using, or trying to use these Carter carburetors today, often on non-original applications. It was hard to believe the amount of crud in this carburetor. It seems the official Carter meaning was Will Carter Four Barrel Will Carter of course being the inventor that started the Carter Carburetor Company. Carburetor problem keeping you off the road? Then they are reassembled and coated with a special fuel and water resistant coating.