Regan Brown
Dirt bike fuel lines are an essential component of the vehicle's fuel delivery system, and it is important to ensure that they are in good condition. Fuel lines can be made from a variety of materials, including clear or coloured hoses, and some are designed to resist hardening or colour change over time. When it comes to the question of whether dirt bike fuel lines are metric, it is important to understand that fuel lines are typically measured in inches, with common sizes including 0.2 x 39 and 0.2 x 79. These dimensions refer to the inner diameter of the fuel line, which is an important factor in ensuring the correct flow of fuel to the engine.
Characteristics and Values of Dirt Bike Fuel Lines
| Characteristics | Values |
|---|---|
| Hose Colour | Black, Blue, Orange, Yellow |
| Hose Length | 1m, 2m, 39", 79" |
| Hose Diameter | 5mm |
| Hose Tube Thickness | 0.2" |
| Hose Material | Resistant to hardening and swelling |
| Hose Use | Fuel Vent Line, Gas Oil Fuel Line, Petrol Tube Pipe, GoKart, Motorcycle, ATV, UTV, Dirt Bikes |
| Hose Price | $6.15 - $13.99 |
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What You'll Learn
Fuel line colour options
Dirt bike fuel lines are usually black rubber hoses, but they can also be found in other colours. For example, Walmart offers a 5mm x 8mm blue fuel line for racing motorcycles, ATVs, dirt bikes, and buggies. MotoSport also offers a variety of fuel line colours, including blue, orange, and black.
The colour of the fuel line is mostly a matter of personal preference, but it can also be chosen to match the colour scheme of the dirt bike or to make the fuel line stand out for easier identification. Some riders may also prefer a transparent fuel line to easily monitor the fuel flow.
It's important to note that the colour of the fuel line should not be the only factor in the decision-making process. Other factors, such as the size, durability, and compatibility of the fuel line with the dirt bike, should also be considered to ensure optimal performance and safety.
When choosing a fuel line colour, it's also essential to consider the environmental conditions in which the dirt bike will be operated and stored. For example, in hot and dry climates, the sun's radiation and dry air can accelerate the ageing of the fuel line, causing it to crack and leak. In such cases, choosing a fuel line with UV protection or a reflective colour may help prolong its lifespan.
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Fuel line accessories
Fuel Lines:
The fuel line is a critical component that transports fuel from the tank to the engine. It needs to be durable and reliable, especially in demanding off-road conditions. Fuel lines come in various sizes and types to fit different dirt bike models. It is recommended to choose a line that can withstand heat and pressure, such as those offered by trusted brands like MotoSport.
Fuel Filters:
Fuel filters are essential for removing contaminants from the fuel before it enters the engine. A clean fuel filter ensures that the engine receives a consistent and uninterrupted flow of clean fuel, which is crucial for maintaining performance and preventing damage to fuel injectors or carburettors.
Fuel Pumps:
A fuel pump is responsible for drawing fuel from the tank and delivering it to the engine at the required pressure and flow rate. Upgrading to a high-performance fuel pump can improve engine performance, especially if you have modified your dirt bike's engine or fuel system.
Fuel Tuners:
Fuel tuners, also known as fuel injection modules, allow you to fine-tune the air-fuel mixture entering the engine. This is particularly useful for optimising performance, improving throttle response, and adjusting for different riding conditions or altitudes.
Fuel Vent Line Hoses:
Vent line hoses are used to release excess pressure and vapours from the fuel tank. They are typically made of durable materials like rubber or synthetic polymers and come in various colours. It is important to choose the correct size and type of vent line hose to ensure proper ventilation of the fuel system.
Fuel Caps and Gas Caps:
Fuel caps and gas caps are essential for sealing the fuel tank and preventing dirt, debris, and moisture from contaminating the fuel. They also help maintain the correct pressure in the fuel tank and can be customised or colour-coordinated to match your dirt bike's style.
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Fuel line length
The fuel line length of a dirt bike depends on the make and model of the bike. For example, a dirt bike with a 1985 Honda CB450SC model would require a fuel line with a length of 1/4 inch or 5/16ths of an inch. A 74 cb360 model, on the other hand, would require a fuel line with an inner diameter of 5.5mm.
When replacing a fuel line, it is important to take the old hose to the parts store to match it with the correct size. It is also important to consider the bends in the fuel line. If there are tight turns, hose clamps or zip ties can be used to prevent kinking.
Fuel lines for dirt bikes are available in various lengths and sizes to accommodate different models. For example, Walmart offers a 1-meter fuel vent line hose with a 5mm inner diameter for $9.99. They also offer a 2-piece fuel vent line hose set, which is 0.2" x 39" with a 5mm inner diameter, for $7.99.
It is always a good idea to consult a professional or a mechanic when replacing a dirt bike's fuel line to ensure the correct length and size are purchased.
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Fuel line compatibility
There are a variety of fuel lines available in the market, and it is crucial to choose one that is designed for durability and reliability. Factors such as heat, pressure, and off-road conditions can impact the performance of your dirt bike, so selecting a fuel line that can withstand these demands is essential. Additionally, ensuring proper fuel line maintenance, including using high-quality fuel and storing your dirt bike correctly, can help prevent leaks and maintain the integrity of the fuel line.
When upgrading or replacing a dirt bike fuel line, it is important to consider the size and type that will fit your bike perfectly. Fuel lines come in different lengths and diameters, so measuring the inner diameter of your current fuel line or referring to your bike's specifications can help you choose the right size. For example, fuel lines with an inner diameter of 5mm are commonly available and compatible with various dirt bikes.
Additionally, the compatibility of the fuel line with your dirt bike's fuel system is crucial. Some bikes are equipped with petcock valves, which require specific steps for replacement, such as closing the float bowl drain plug and replacing the vent hose. On the other hand, fuel injection bikes may require the use of line clamping pliers to pinch the fuel line and prevent fuel from draining out during the replacement process. It is always recommended to refer to specific instructions for your dirt bike model to ensure compatibility and proper installation.
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Fuel line resistance
When considering fuel line resistance, it is important to select the right type of fuel hose for your dirt bike. There are four grades of fuel line: A1, A2, B1, and B2. The A1 fuel hose is the most suitable option for below-deck, high-pressure applications, offering superior fire resistance and minimal permeability. For above-deck installations, such as an outboard engine linked to an above-deck tank, any of the four types of fuel lines can be used. However, it is always recommended to choose the A1 fuel hose if you are unsure, as it is the most versatile and safe option.
Additionally, when dealing with fuel lines, it is crucial to ensure proper sealing of fuel fittings and threads. Most fuel system components, such as fuel filters, pumps, and tank connections, feature female NPT or NPTF ports. To establish a secure connection, you must use a male hose barb fitting that matches the thread type. Brass or stainless steel are the preferred materials for these fittings. It is worth noting that certain thread types, like NPT, may leave a small gap between the male thread tip and the female valley.
In terms of sealants, liquid or paste sealants are recommended to avoid clogging issues caused by Teflon tape. For gasoline applications, Aviation Form-a-gasket Number 3 is a reliable choice, and it is specifically designed to resist modern gasoline solvents that contain ethanol. Another option is the Permatex High-Temperature Thread Sealant, which offers medium solvent resistance and is suitable for fuel sender applications.
Furthermore, it is worth considering ethanol-resistant and alcohol-resistant fuel lines, especially if you are using ethanol-blended gasoline. These fuel lines are designed to withstand the corrosive effects of ethanol and can help prevent cracking and discolouration. The Bing Alcohol Resistant Fuel Line, for example, has been praised for its flexibility, toughness, and translucence by users. It is also endorsed by Rotax, a well-known engine manufacturer.
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Frequently asked questions
The standard size of a dirt bike fuel line is 5mm in diameter.
You can purchase a dirt bike fuel line from various retailers, including Walmart, Amazon, and MotoSport.
The price of a dirt bike fuel line can vary depending on the retailer and the specific product, but it typically ranges from $7 to $14.
The material used for dirt bike fuel lines can vary, but some common materials include rubber, silicone, or PVC.
Yes, using a clear fuel line on a dirt bike can be beneficial as it allows you to see when gas is flowing through it, which can be handy for fuel flow monitoring.
