Compression charts are an invaluable tool for boaters who use Johnson outboard motors. Compression charts let you see at a glance how much power your boat’s engine will produce, so you can make sure you’re getting the most out of your boat. This article will explain what a Johnson outboard compression chart is, how to read it and how to use it to get the most out of your boat.
What is a Johnson Outboard Compression Chart?
A Johnson outboard compression chart is a graph that shows the amount of compression in the engine of a Johnson outboard motor. This compression is measured in pounds per square inch (PSI). The higher the compression, the more power the motor will produce. A compression chart will also show the engine’s RPMs and the engine’s bore.
How to Read a Johnson Outboard Compression Chart
The first thing to understand when looking at a Johnson outboard compression chart is that it is organized into three columns. The first column is labeled “PSI” and it indicates the amount of compression in the engine in pounds per square inch. The second column is labeled “RPM” and it shows the engine’s revolutions per minute. The third column is labeled “Bore” and it indicates the size of the engine’s cylinders.
How to Use a Johnson Outboard Compression Chart
Using a Johnson outboard compression chart is relatively straightforward. First, you’ll need to find the PSI, RPM, and Bore numbers that match your motor. Then, look at the graph and find the point where all three numbers intersect. This will give you the amount of power your engine is producing. The higher the PSI and RPM, the more power your motor will produce. The larger the bore, the more fuel the engine can take in and the more power it can produce. The other important factor to take into account is the amount of fuel the engine is consuming. If the engine is consuming more fuel than it produces, it won’t be as powerful.
Conclusion
A Johnson outboard compression chart is a great tool for boaters to use to get the most out of their boat. It can tell you how much power your motor is producing and how much fuel it is consuming. Knowing this information can help you make sure you’re getting the most out of your motor and your boat.
