Maintaining Your Honda Engine B20

The Honda B-series engines are a family of inline four-cylinder DOHC automotive engines. They were first introduced by Honda in 1988. These engines are typically equipped with a rotary valve and a horizontally opposed camshaft. The engines were designed for increased performance and reliability. You can find these engines in Honda motorcycles and automobiles.

Modifications to improve performance

There are a variety of modifications available to increase the performance of your Engine B20. Among these are twin charging conversions, competition cams, and turbocharging. These modifications alter the combustion process by removing restrictions and turbulence. Modifications to the engine can also include internal engine upgrades, including remaps and piston/head/valve upgrades. These modifications can increase power output by as much as 30% in turbocharged engines and 15% for NASP engines. They also allow you to improve mileage by adjusting the valves and other parts of the engine.

Modifications to the engine can improve combustion quality and reduce exhaust gas temperature. Oxygen content in the exhaust gas has a positive influence on NO emissions. By preheating the fuel before combustion, B20 can be more efficiently burned. In addition to improving combustion quality, preheating can reduce the temperature of exhaust gases. This means that the engine will produce less CO and generate less smoke than a non-preheated fuel.


Whether you choose to buy a car with a B20 engine or one from another brand, you must know how reliable it is. These engines are generally solid and trouble-free units, but a good service is necessary to maintain the best performance. Carbon buildup can cause your engine to lose power and create flat spots. In order to prevent these problems, you should maintain your engine by using the tips mentioned below.

Honda B20 engine reliability is generally good, although high mileage can make it show its issues. The youngest engine is already more than 20 years old, so it’s only natural that a vehicle with this engine would show some signs of wear. However, if the car has a low mileage, a B20 engine can be extremely reliable. Just remember to warm up your engine before driving it.

Intake flow

Changing the intake flow of an engine can make a huge difference in the power of an engine. If you are trying to improve the flow of your engine, there are several different things you can do. Porting the engine is one way to improve the flow. Another method is to modify the head to remove the turbulence. Both of these methods increase the flow of air into the engine.

The design of the intake and exhaust ports is an important factor in the power output of a B20 engine. A higher flow of air and fuel will result in more energy and higher horsepower. The size and angle of the valves will also affect the amount of air that enters the engine. A turbocharger or additional turbo can also increase power. While this is more difficult to install, it can make a massive difference in performance.


If you’re in the market for a new camshaft for your b20 engine, you’ll likely find a huge variety of options. Whether you’re looking for a higher lift or a broader bore, there are many options available. There are even specific cams for certain types of motors, such as the B20E.

Smog test

If you have recently converted your car to run on B20 fuel, you should know that it will need to undergo a smog test in order to continue operating. Fortunately, it is not illegal to convert your vehicle to run on B20 fuel, as long as it meets certain specifications. In Maryland, for example, you need to get a smog test every two years, unless you have a vehicle that meets emissions requirements for an older model.

The EPA requires vehicles to meet certain smog-test requirements, and B20 blends can help meet those standards. The study analyzed 49 experimental studies using a variety of engine dynamometers, as well as vehicle test results. The results showed that the common biodiesel blend can reduce the amount of carbon monoxide, particulate matter, and hydrocarbon emissions, which are all harmful pollutants.


If you are planning on using B20 biodiesel in your diesel vehicle, you need to check with your vehicle manufacturer for warranty coverage. Some companies will not cover B20, while others will. Fortunately, there are companies that offer extended warranties for B20 engines. The manufacturers of many diesel vehicles are making their products with the biodiesel in mind.

Mack and Volvo are among the companies that offer warranty coverage for biodiesel blends. These companies have allowed B20 blends in their diesel engines since 2004. In addition, Mack Trucks has authorized B5 biodiesel fuel in their heavy-duty engines. John Walsh, a Mack Trucks spokeswoman, confirmed that the authorization also includes pre-’07 engines. Volvo and Mack also said that they had not rejected warranty claims for biodiesel engines.

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