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# How To Measure Exhaust Pipe Diameter

The exhaust pipe on your car is one of the most important pieces of equipment. It’s responsible for emissions and noise, which can cause significant problems in your engine. In order to properly equip your car with an exhaust system, you need to know the correct diameter for the pipe. Unfortunately, many drivers don’t know how to measure it. In this article, we will provide a step-by-step guide on how to measure exhaust pipe diameter.

## What is Exhaust Pipe Diameter?

The exhaust pipe diameter is the size of the opening in the exhaust pipe that leads to the outside world. It is essential to ensure that the exhaust pipe diameter is correct, as it can affect both performance and emissions.

## How to measure exhaust pipe diameter

If you’re looking to measure the exhaust pipe diameter on your car, there are a few different ways to go about it.

One way is to use a tape measure and measure around the circumference of the pipe. Make sure you account for the thickness of the pipe as well.

Another way is to use a caliper. This will give you more accurate measurements, but it’s also more time consuming.

If you’re just looking to get an approximate measurement, using a formula like: (diameter x 0.8) will work fine.

## How to use the information from the measurement

If you have a header or exhaust system on your vehicle that needs to be replaced, there are a few things you can do in order to get an accurate measurement of the diameter of the replacement pipe. The first thing is to measure the outer circumference of the old header or exhaust system. This will give you a good starting point for measuring the new one. Next, take several measurements along the length of the pipe and record these numbers. Finally, use a mathematical formula to convert these measurements into diameter.

Step 1: Measure Outer Circumference of Old Header/Exhaust System

The first step is to measure the outer circumference of your old header or exhaust system. This will give you a good starting point for measuring the new one. Take several measurements along the length of the pipe and record these numbers.

Step 2: Measure Lengths Along Pipe

Next, take several measurements along the length of the pipe and record these numbers. You’ll need these numbers in order to use a mathematical formula to convert them into diameter. The formula will work best if you divide each measurement by 2, since this is how many inches are in a foot. Make sure to keep track of which number represents what section of the pipe!

Step 3: Use Formula to Convert Lengths Into Diameter

Now it’s time to use your math skills! To convert those lengths into diameter, divide each number by 2 and then multiply that result bythe diameter of

## Conclusion

If your car needs new exhaust pipes, measuring the diameter of your current ones is a must. Not only will this ensure that you get the right size, but it can also save you time and money by not having to order and install the wrong pieces. Follow these simple steps to measure your exhaust pipe diameter: