There are several ways to improve the performance of your B20 VTEC engine, and each method will result in different gains in power and torque. The B20 VTEC uses variable valve timing/lift camshafts, which give it more torque and power than other b-series motors. By tuning the camshafts with lower duration and lower lift, you can improve the power and torque of your B20.
If you are looking for a more powerful b-series motor, you may want to consider an LS/VTEC motor. Unlike B20 motors, which lack VTEC, LS/VTEC motors can deliver more torque and power throughout the power band. However, the LS/VTEC motor requires more work and will cost more money to run.
The LS/VTEC engine features a VTEC head. This head has a higher lift and duration and is designed for greater torque and power. The LS engine also has a wider power band. The engine revs up to 8000 to 9000 rpm, which is much more than any other b-series motor.
The LS/VTEC engine has more torque and power band than any other slant-four b-series motor. This is due to the longer stroke and crankshaft of the B18a/b block. The LS block is also bigger.
VTEC, or variable valve timing and lift camshafts, is a technology that changes the cam profile of an engine. This technique makes it possible to increase power while keeping fuel consumption to a minimum. Most engines use the same type of camshafts to achieve these results, but LS/VTEC engines use variable camshaft profiles.
In modern VVT systems, the relationship between the camshaft and the crankshaft is vital. A cam and crank-position sensor tells the ECU when to adjust the valves. The valves are responsible for controlling the amount of air and fuel in the engine, and must be opened and closed at the right times to achieve maximum efficiency.
Intake valves let air-fuel mixture into the engine, while exhaust valves let exhaust gases out. A cam-shaft opens the intake valves when the piston moves downward, and closes them when it moves back up. This system improves the torque output throughout the engine’s power range.
A lower duration, lower lift cam profile provides higher intake velocity and improved volumetric efficiency, which results in better torque production. The vtec solenoid is activated by the ecu around 5600rpm to reroute the oil through a special passage. The cam followers are designed so that the center cam follower and the single third cam lobe lock together and follow the cam. This allows for greater air inlet velocity at higher piston speeds and increased volumetric efficiency, which produces a flat torque curve across the majority of rpm.
Lower duration, lower lift cam profiles increase peak torque and horsepower. More duration means the valve stays open for a longer period of time as the crank rotates. This is important at high rpms, when less time is available for cylinder fill. Increasing the duration of the camshaft can also affect the powerband.
Besides raising the lift, you can also increase the duration of the camshaft. The longer the duration, the longer the valves will stay open, thus allowing more air and fuel to enter the engine. This results in increased top-end power, but at the expense of low-end torque.
Adding a performance tuning kit to a B20 VTEC engine can increase power by as much as 15%. It works by adjusting valve angles to let more air into the engine and burning more fuel. Another popular performance upgrade is adding a supercharger or extra turbocharger. While this method is more difficult to set up, it can yield significant gains.
The B20 Vtec engine is from Honda’s B series and is similar to the B16 and B18 engines. These engines were canceled in 2001, but were later revived by tuning and modification enthusiasts. As a result, there are now a large number of car enthusiasts tinkering with these engines.
A boosted B20 engine is a great way to increase power and torque. It is more efficient at higher rpms and is cheaper than a stock b16. A boosted B20 engine will result in a higher top end power output, but it will also reduce fuel mileage.