Sylvie Willis
The Mazda RX-8 is the only mass-produced car in the world with a rotary engine. It has six fuel injectors, with the primary injectors at 290cc and the secondary and primary 2 injectors at 380cc. The RX8 fuel injectors are rarely faulty, but if you are looking to change them, there are many options available, including the Injector Dynamics ID1050x 1065cc Fuel Injectors.
| Characteristics | Values |
|---|---|
| Number of fuel injectors | 6 |
| Number of rotors | 2 |
| Primary injectors | 290cc |
| Secondary and primary 2 injectors | 380cc |
| Stock fuel pumps capacity | 650 hp |
| Fuel injector manufacturer | Injector Dynamics and Bosch Motorsport |
| Fuel injector model | ID1050X |
| Fuel injector evolution | ID1000, ID1300x, ID1700x |
| Fuel injector compatibility | All known fuels |
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What You'll Learn
- The Mazda RX-8 has a 1.3L RENESIS two-rotor rotary engine
- The RX-8 hi-power has 6 fuel injectors, 3 per rotor
- The primary injectors are 290cc, the secondary and primary 2 injectors are 380cc
- The stock injectors are good to about 600 hp at the wheels
- The Injector Dynamics ID1050x fuel injectors are widely accepted as the best in the world
The Mazda RX-8 has a 1.3L RENESIS two-rotor rotary engine
The Mazda RX-8 is a unique car, the only production car in the world with a rotary engine. This engine is a 1.3L RENESIS two-rotor rotary engine, which makes 212 horsepower at 7,500 rpm and 159 pound-feet of torque at 5,500 rpm. The RX-8 is the successor to the RX-7, although it is considered underpowered in comparison. The RX-8 has a distinctive look, with rear-hinged "freestyle" doors, similar to suicide doors, which provide easier access to the rear seats. The car has no B-pillars between the front and rear doors, but the leading edge of the rear door acts as a "virtual pillar" to maintain structural rigidity. The RX-8's cabin was designed with enough room to seat four adults, making it a genuine 4-seater.
The RX-8's engine has some interesting features. Firstly, it has a remarkable and otherworldly noise, vibration and harshness "signature", with little vibration or harshness. This is likely due to the lack of pounding common to reciprocating piston engines. The engine also has a high redline of 9,000 rpm, which is impressive and adds to the unique character of the car. The RX-8 "hi-power" has 6 fuel injectors, 3 per rotor, designated as primary, secondary, and primary 2. The primary injectors are 290cc, while the secondary and primary 2 injectors are 380cc. These injectors are staged in various levels and configurations based on load and RPM, which is quite different from any piston engine.
The RX-8 has gone through several iterations, with improvements made over the years. The 2009 model, for example, featured a restyled front and rear bumper, as well as new front and rear headlamps and larger exhaust pipes. The 2009 model also offered a new five-poke wheel design that symbolised the rotary engine, with different arrangements for each wheel size. A notable version of the RX-8 is the Kuro, which used a more evolved RENESIS engine and 6-speed manual transmission, with a claimed output of 227 hp. The Kuro version also featured a range of luxury interior features, such as white leather interior, heated seats, and a Bose premium audio system.
The Mazda RX-8 and its 1.3L RENESIS two-rotor rotary engine are an intriguing example of automotive engineering. With its unique engine, distinctive design, and impressive performance, the RX-8 has earned its place as a celebrated sports car.
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The RX-8 hi-power has 6 fuel injectors, 3 per rotor
The Mazda RX-8 is the only mass-produced car in the world with a rotary engine. This engine is known to be unreliable and a gas-guzzler. The RX-8 "hi-power" has six fuel injectors, with three per rotor. These injectors are designated primary, secondary, and primary 2. The primary injectors are 290cc, while the secondary and primary 2 injectors are 380cc. The stock injectors are good for about 600 hp at the wheels, while the stock dual fuel pumps can manage around 650 hp.
The RX-8's engine uses rotors instead of pistons, and over time, they wear down. The primary injectors are responsible for most of the fuel delivery at part throttle and all of the fuel delivery at idle. They are usually run to maximum output by 3500 RPM. The secondary injectors take over for fuel delivery under load beyond 4800 RPM but are rarely pushed beyond 60% capacity. The primary 2 injectors are activated at around 6250 RPM and are not driven beyond 35%.
The RX-8's fuel injectors are staged in various levels and configurations based on load and RPM, which is different from a piston engine. The RX-8's fuel injectors can be replaced with Injector Dynamics ID1050X Fuel Injectors, which are considered the best in the world. These injectors are compact and can fit in over 200 applications, including future engines that will use short body injectors. They also have corrosion-resistant internals, making them compatible with all known fuels and extending their service life.
The right size injector can supply enough fuel under full-load conditions at an 80% duty cycle. For example, a naturally aspirated 300 hp engine with eight injectors will need 23.4 lbs/hr. of fuel per injector at an 80% duty cycle.
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The primary injectors are 290cc, the secondary and primary 2 injectors are 380cc
The Mazda RX-8 is a unique car, as it is the only production car in the world with a rotary engine. This engine is a 1.3L RENESIS two-rotor rotary engine, making 212 horsepower at 7,500 rpm and 159 pound-feet of torque at 5,500 rpm. The RX-8 "hi-power" engine has six fuel injectors, with three per rotor, designated as primary, secondary, and primary 2.
The primary injectors are 290cc, and they are responsible for most of the fuel delivery at part throttle and completely for idle. These injectors are typically run to maximum output by 3500 RPM and WOT. The secondary and primary 2 injectors are 380cc. The secondary injectors are responsible for much of the fuel delivery under load beyond 4800 RPM, but they are rarely driven beyond 60% of their capacity. The primary 2 injectors come online around 6250 RPM and are not typically driven beyond 35%.
There are several aftermarket options for fuel injectors for the RX-8, such as the Injector Dynamics ID1050x, which is an evolution of the ID1000 injector. This injector is corrosion-resistant and compact, allowing for fitment in 200+ applications. It also has a stronger magnetic circuit, offering stable operation up to 10 bar. There are also options for remanufactured injectors, which are less expensive, but may not offer the same performance or longevity as the new injectors.
It is important to note that the fuel injectors in the RX-8 rarely fail, and upgrading them may not lead to significant performance improvements. However, with the proper equipment and patience, it is possible to clean and rebuild your own fuel injectors, which can save money over replacing them.
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The stock injectors are good to about 600 hp at the wheels
The Mazda RX-8 is a unique car, as it is the only production car in the world with a rotary engine. The stock fuel injectors in the RX-8 can support up to 600 hp at the wheels. This is an impressive amount of power for the stock injectors to handle, and it means that the stock injectors can be used for many performance applications without needing to be upgraded.
The primary injectors in the RX-8 are 290cc, and the secondary and primary 2 injectors are 380cc. These injectors are staged in various levels and configurations based on load and RPM, which is quite different from any piston engine. The RX-8's rotary engine design means that it burns oil, and there are oil squirters in the intake manifold, as well as injectors to spray oil directly into the combustion chamber.
When upgrading the engine for more power, it is important to consider the limitations of the stock injectors. While they can support up to 600 hp, going beyond this limit will require upgrading to larger injectors. Additionally, the stock fuel pumps are good to about 650 hp at the wheels, so an upgrade to the fuel pumps may also be necessary for higher horsepower applications.
For those seeking to upgrade their RX-8's engine beyond the capabilities of the stock injectors, there are a few options available. One option is to upgrade to 800cc injectors, which will be able to handle 600whp with some wiggle room. Another option is to go with 1000cc injectors, which will provide more than enough capacity for 600whp. It is important to note that upgrading the injectors may require additional modifications to the engine management system to accommodate the larger injectors.
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The Injector Dynamics ID1050x fuel injectors are widely accepted as the best in the world
One of the standout features of the ID1050x is its compatibility with all known fuels. This is due to its corrosion-resistant internals, which also extend the service life of the injector when used with corrosive fuels. This compatibility is a significant advantage, especially when compared to other injectors that may have limited fuel compatibility.
The compact body of the ID1050x is another notable feature, allowing for fitment in over 200 applications, including current and future engines that utilize short body injectors. This versatility is crucial for tuners working with various engine configurations. Additionally, the ID1050x's improved internal flow path increases output by 5% without compromising low flow performance, resulting in enhanced engine performance.
Furthermore, the ID1050x fuel injectors offer optimization of critical operating parameters that are important to motorsport tuners. The stronger magnetic circuit provides stable operation up to 10 bar, and the replaceable inlet filter extends the service life of the injector. The ID1050x's nominal flow rate is 1065cc/min @ 3.0 Bar (43.5 psi) when using gasoline at 52 degrees C (125 degrees F).
When it comes to the Mazda RX-8 fuel injectors, the primary injectors are 290cc, while the secondary and primary 2 injectors are 380cc. The Injector Dynamics ID1050x fuel injectors offer significant advantages over the stock injectors in terms of performance, compatibility, and service life.
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Frequently asked questions
The primary fuel injectors in the Mazda RX-8 are 290cc.
The secondary and primary 2 fuel injectors in the Mazda RX-8 are 380cc.
The Mazda RX-8 is powered by a 1.3L RENESIS two-rotor rotary engine that makes 212 horsepower at 7,500 rpm.
The fuel pressure of the Mazda RX-8 at full boost is 12-13psi.
