Understanding How Your Gast Pump Works

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If you want to improve your business’s operations, a Gast pump can help. But if you’re not familiar with how they work, this article has the answers.

Read on to learn more about how a Gast vacuum pump works and how it can benefit you:

How Does a Gast Vacuum Pump Work?

In general, a vacuum pump is an added advantage to any engine that is high performance enough to generate a substantial amount of blow-by efficiency. A Gast pump can add horsepower, increase engine life, and keep oil cleaner for long periods.

A vacuum pump has one or both valve covers hooked up to the inlet, and sometimes the valley pan. It sucks the engine air, which minimizes the build-up of air pressure caused by blow due to the combustion gases going into the pan past the piston rings. The amount of air volume that the vacuum pumps varies.

Therefore, the potential pressure that a pump can produce is restricted by the amount of air that it can flow. The exhaust from the vacuum pump is transmitted to the top of the breather tank with a filter to preserve any liquids (humidity, unspent gasoline, airborne oil) sucked from the engine. Exhaust air flows into the atmosphere via the air filter.

How Does a Gast Pump Help With Combustion?

As revolutions per minute (RPM) increases due to the pressure behind them, the blow-by builds up in the pan, and the rings are forced upward on the outer ring edge. This creates a decrease in the ring seal to the cylinder walls, creating additional blow-by. It also generates “flutter” from the rings, which further raises blow-by.

The increased pressure in the pan then forces the oil drawn into the air past the rings on the intake stroke as the engine is sucking in air. The sucked oil is also pulled past the valve guides during the intake stroke. The net result is fuel oil contamination (the same way that a PCV device contaminates the fuel by drawing in the intake of oil), which essentially decreases the fuel octane content.

This decreases horsepower, and due to the faster flame front, a hole in the pistons burn from the increased heat in the chamber on a nitrous or power adder motor.

By reducing, removing or even placing negative pressure on the engine, the Gast vacuum pump reverses both of these issues. The net provides an improved ring seal with little to no oil leakage, fewer oil spills, cleaner oil, longer engine life, and more horsepower. Also,  lower friction ring packages can be used by your engine builder since the Vacuum pump lessens the resulting blow-by.

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Improve Operations With a Gast Pump

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