Ameer Randolph
T4 fuel is a type of racing fuel designed for stock or slightly modified four-stroke engines. It is unleaded, ethanol-free, and oxygenated, with an oxygen content of around 5-6%. T4 fuel is a direct pour-in replacement for premium pump gas and offers several advantages over it, including greater protection against detonation, 2-3% more power, and better throttle response across the entire RPM range. While T4 fuel provides improved performance and protection, it may not be suitable for all engines, and users should exercise caution when using oxygenated fuels.
| Characteristics | Values |
|---|---|
| Octane rating | 97 (R+M/2) or 100 (R+M/2) or 103.5 |
| Oxygen content | 5% or 5.9% or 5.92% |
| Ethanol content | 0% |
| Engine type | Four-stroke |
| Antiknock rating | 100 |
| Usage | Stock or slightly modified four-stroke engines |
| Comparison with pump gas | Offers 2-3% more power and better throttle response across the entire RPM range |
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What You'll Learn
T4 fuel is designed for stock or slightly modified 4-stroke engines
VP T4 fuel is specifically designed for stock or slightly modified 4-stroke engines. It is a popular choice for racing enthusiasts who want reliable power gains. T4 fuel is unleaded and ethanol-free, making it a direct pour-in replacement for premium pump gas, which has a short storage life and can cause a heightened need for repairs.
T4 fuel offers greater protection against detonation with its 97 octane rating (R+M/2). This rating is comparable to Sunoco E15, which has a 98 octane rating and 5.6% oxygen content. VP T4 fuel provides 2-3% more power and better throttle response across the entire RPM range, even when compared to more expensive performance parts. This consistent power delivery is especially beneficial for racing on sandy tracks, where bikes tend to lose power as the engine gets hot.
The ethanol content in pump gas can cause issues such as gummy substances clogging fuel pumps and early deterioration of head gaskets and O-rings, shortening the engine's lifespan. T4 fuel eliminates these problems due to its ethanol-free formulation. Additionally, T4 fuel helps maintain consistent power output, making it a preferred choice for racing applications.
While T4 fuel offers benefits over pump gas, it is important to note that oxygenated fuels, in general, require careful handling. Riders should be aware of the potential risks and understand the science behind sizing jets for oxygenated fuels. This knowledge will enable them to safely utilise the power gains offered by T4 fuel without encountering issues.
In summary, T4 fuel is a specialised product designed to meet the needs of stock or slightly modified 4-stroke engines used in racing applications. Its ethanol-free formulation, higher octane rating, and consistent power delivery make it a preferred choice for racing enthusiasts seeking reliable performance and protection against detonation.
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T4 fuel has 5% oxygen content
T4 fuel is a type of racing fuel designed for stock or slightly modified four-stroke engines. It is a direct pour-in replacement for premium pump gas, which has a short storage life and can cause a heightened need for repairs. T4 fuel offers several advantages over pump gas, including greater protection against detonation and 2-3% more power and better throttle response across the entire RPM range.
When it comes to the oxygen content of T4 fuel, there are slightly different values mentioned across various sources. Most sources indicate that T4 fuel has 5% oxygen content. Specifically, one source mentions that T4 fuel has a 5.92% oxygen content, which rounds to 6%. This percentage of oxygenation offers benefits in terms of power and performance.
However, it is important to note that some sources provide slightly different values for the oxygen content in T4 fuel. For example, one source mentions that T4 fuel has a 5.9% oxygen content, while another source states that it has a 5.6% oxygen level. These minor variations could be due to different testing methods or fuel batches. Nonetheless, the oxygen content in T4 fuel generally falls within a narrow range.
Compared to other fuels, T4's oxygen content contributes to its performance characteristics. For instance, VP's C85 fuel, which is their version of e85, has a significantly higher oxygen content of 32%, requiring larger jetting adjustments. Similarly, the methanol fuel mentioned in one source has a much higher oxygen content of around 50%, resulting in significant jetting changes.
In conclusion, T4 fuel typically has an oxygen content of around 5%, with specific values mentioned ranging from 5% to 5.92%. This oxygenation level contributes to the fuel's performance advantages, including increased power and throttle response. However, it is important to carefully consider the oxygen content when working with oxygenated fuels, as highlighted in one of the sources.
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T4 fuel is unleaded and ethanol-free
VP T4 fuel is unleaded and ethanol-free. It is designed for stock or slightly modified four-stroke engines in motorcycles and other off-road vehicles used in competition. T4 fuel is a direct pour-in replacement for premium pump gas, which has a short storage life and can cause a heightened need for repairs due to its ethanol content.
T4 fuel offers greater protection against detonation with its 97 octane rating (R+M/2). It also provides 2-3% more power and better throttle response across the entire RPM range compared to more expensive performance parts. The absence of ethanol in T4 fuel prevents the formation of gummy substances that can clog fuel pumps and jets on carbureted engines, thus improving the lifespan of valve trains, fuel pumps, and top-end gaskets.
The oxygen content in T4 fuel is specified as 5.9% in one source. However, another source mentions that Sunoco E15 fuel, which is comparable to T4 fuel, has a 5.6% oxygen content. The oxygen content in T4 fuel contributes to its performance characteristics, making it a popular choice for racing applications.
T4 fuel is available in easy-to-pour containers, such as a 5-gallon pail or a 55-gallon drum, making it convenient for enthusiasts who want reliable power gains in their off-road vehicles. The fuel's ethanol-free nature, combined with its oxygen content, contributes to its performance advantages and makes it a preferred option for racing enthusiasts.
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T4 fuel is a direct pour-in replacement for premium pump gas
T4 fuel provides several advantages over pump gas. Firstly, it has a longer storage life. Pump gas has a short storage life and can cause a heightened need for repairs in all engines after periods of non-use due to its ethanol content. Ethanol can leave a gummy substance that clogs fuel pumps and causes the early deterioration of head gaskets and O-rings, shortening the lifespan of the engine.
Another issue with pump gas is phase separation. If water gets into the fuel, the water/ethanol mixture can sink to the bottom of the tank, causing the fuel pump to stop working and the bike to miss and sputter. T4 fuel does not have these issues due to its ethanol-free and oxygenated formulation.
In terms of performance, T4 fuel offers 2-3% more power and better throttle response across the entire RPM range compared to more expensive performance parts. When coming out of corners and rolling the throttle in second gear, riders may feel that the bike has more pull. Shifting into third gear results in a better pull, and the bike runs crisper and cleaner throughout the RPM range.
Overall, T4 fuel is a direct pour-in replacement for premium pump gas, offering greater protection against detonation, improved performance, and a longer storage life.
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T4 fuel offers greater protection against detonation
T4 fuel is a type of unleaded, ethanol-free gasoline designed for stock or slightly modified four-stroke engines. It is a direct pour-in replacement for premium pump gas, which has a short storage life and can cause a heightened need for repairs in engines after periods of inactivity. T4 fuel, on the other hand, offers greater protection against detonation due to its higher octane rating.
The octane rating of a fuel is a measure of its resistance to detonation or knock, which is the premature ignition of the fuel-air mixture in the engine. Knocking can reduce engine performance and, over time, can even cause engine damage. T4 fuel has an octane rating of 97 (R+M/2), which is higher than that of premium pump gas. This higher octane rating provides greater protection against detonation, making it a more reliable choice for riders.
In addition to its detonation resistance, T4 fuel also offers improved performance and throttle response. It provides 2-3% more power across the entire RPM range compared to more expensive performance parts that only increase power in a small slice of the power curve. This makes T4 fuel a cost-effective option for those seeking both protection against detonation and enhanced engine performance.
The benefits of T4 fuel are particularly noticeable in off-road vehicles and motorcycles used in competitions. Its consistent power delivery and improved throttle response can provide a competitive edge, especially when navigating corners and rolling the throttle in second gear. Additionally, T4 fuel's ethanol-free formulation eliminates the issues associated with ethanol-containing fuels, such as the formation of gummy substances that clog fuel pumps and cause early deterioration of engine components.
While T4 fuel offers greater protection against detonation, it is important to note that oxygenated fuels, in general, require careful handling. Riders should be aware of the potential risks and ensure that their bikes are properly jetted to accommodate the oxygen content in the fuel. Overall, T4 fuel's combination of detonation resistance, improved performance, and longer shelf life makes it a preferred choice for enthusiasts seeking reliable power gains and a smoother riding experience.
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Frequently asked questions
T4 fuel typically contains 5% oxygen, though some sources state it contains 5.9% oxygen.
T4 fuel is a type of unleaded, ethanol-free race fuel designed for stock or slightly modified 4-stroke engines.
T4 fuel is used in motor-cycles and other off-road vehicles used in competition.
The oxygen content of T4 fuel is higher than that of Sunoco 260 GT and Torso 99, which contain 3.5% oxygen. However, it has a lower oxygen content than VP C85, which contains 32% oxygen.
