Tuning the carb... Power to the classic!

Tuning the carb... Power to the classic!

  • Category: Car Blogs
  • Date: 16-02-2020

Just looking at a car from another decade, many of us feel nostalgic and excited about the elegance of retro style. These jewels of automotive engineering go beyond the strength of the bodywork, they also hold the essence of sports rides and the carburetor is the piece that helps us start to dream about the speed and power of a muscle car. The carburetor has to be necessarily made of the best quality and without any technical failure. Let's review more about this fascinating old part. 
 
Classic cars have a carburetor instead of what today is the injection system and it is in charge of mixing the air with the gasoline to create the combustion and this goes to the engine chamber. That is not all, the carb is also relevant when adjusting the acceleration and has a butterfly valve that regulates the amount of air that enters into the combustion, to avoid wasting gasoline. In the 80's an electric carburetor seemed to be its successor, but it didn't work out at all, that's why in the 90's its replacement arrived, with what we know as the injection system. 
 
Why modify or change the carburetor? Well, when we want to have an extraordinary performance of a classic car, we need to use a sports carburetor, which is bigger, with several barrels. What these more powerful models do is leave one barrel working for normal use and, when speed is required, the other barrels, which are larger than the main one and have the function of giving more acceleration to our vehicle, start working progressively. As we stop accelerating, the barrels close one after another until only the main one is working. 
 
Before tuning the carburetor completely, a stronger battery is needed, and 9mm spark plug cables, as well as a high-performance ignition coil, which we already talked about and you can check here (link). With this, we must use competition filters and spark plugs. Those are the basic changes to be able to adapt a good carb in our classic and start the performance tests, in which we will see if both the water pump and thermostat, as well as the radiator, are enough, because as we give more demand to the engine, it will be heating up and may require parts of higher capacity. 
 
Sounds like a lot of things, doesn't it? The beauty of the classics takes a lot of work, but you can also find kits to calibrate and improve your carburetor without having to dismantle everything. Of course, the difference isn't going to be so great in the end.  Many people prefer small upgrades for reliability, but enthusiasts go to extremes to show off on the road. Which side are you on? Do you have an old car? Tell us in the comments, we want to see it! And you know so, subscribe to stay on top of tuning world, check out our social media and stay in tune!