Blow off Valves

Arguably the most popular item when it comes to racing is the turbocharger. Usually just referred to as turbo, it’s an essential part when it comes to car performance, and it’s one that power without adding much weight at all to the car. That means that adding a turbo provides almost a pure speed increase. It’s also a relatively safe speed increase, as it doesn’t add too much wear and tear to the engine as long as it’s installed correctly. Blow off valves are an enormous part of that process, as they help save the engine from that wear and tear.

Everybody knows that the main benefit of adding a turbocharger to a car’s engine is to speed up the car. It increases the power of the engine by also increasing the air pressure within it. The increased air pressure allows the car to get more air and fuel out of each cylinder, which in turn increases the power of the explosions in each cylinder. Increasing the fuel and air that the engine can burn is a guaranteed way to increase its power, and turbos can add anywhere between 30 and 40 percent to your engine’s stock power.

However, the all of that extra air, fuel and power has to go somewhere. The main reason why stock engines don’t use as much power without turbos is that the pressure and exhaust from all of that extra power has nowhere to go. In its normal operation, the engine expels heat and exhaust through its regular exhaust system. Because turbo overclocks the engine, the pressure needs to be released, and it’s too much to be handled by the regular exhaust systems. In order to keep the engine cool and reduce the wear and tear exerted on it, the turbo has to come with a solution.

Blow off valves are one example of this. There are a number of devices designed to release the pressure and heat created by turbocharging the engine, and blow off valves are one. Other types of pressure releasers are the bypass and dump valves, which operate a little differently. The bypass valve works by taking the air pressure within the engine that is created by the turbo, and recycling it back into the intake valve. This happens when the turbo throttle is off, and allows the engine to effectively cool itself. In dump valves, the compressed air never actually enters the engine, which changes how the turbo works slightly.

Blow off valves take the air pressure in the engine and release it outside of the car entirely. This is what produces the whistling sound that most people associate with turbos. Specifically, the whistling sound is caused by the exit design, which can vary depending on what the design is, and there are a number of solutions to reduce this sound. Nevertheless, blow off valves are probably the most effective solution to release pressure created by turbochargers, so they’re well worth investing in if you’re trying to race.

Without a pressure release system of some sort, an engine with a turbo equipped is vulnerable to a syndrome called compressor surge, where the compressed air can get trapped in the engine or turbo and cause problems. The bottom line is that some kind of pressure release system is absolutely necessary if you’re going to run a turbo in your engine. It’s a very effective piece to your car, and if you’re racing, it’s really necessary in order for you to compete. But unless you install it correctly, it can do serious damage to your engine. Just make sure your blowoff valves are installed correctly, and you’ll be fine.



Comments are closed.