Rajan Wilcox
When it comes to fuel lines, there are a number of factors to consider when choosing the right fittings. The psi of the fuel line is an important consideration, as higher psi will require different fittings to lower psi. For example, barbs and clamps are good enough for 45 psi, but not for 45 psi or more. The material of the fuel line is also a key consideration, as stainless steel is more stiff than aramid fibre, which can create more pressure and stress on the line and hose ends.
| Characteristics | Values |
|---|---|
| Fittings | -6an |
| Fitting angle | 37 degrees |
| Hose material | Aramid fibre, stainless steel, rubber |
| Hose type | Braided, push fit |
| Hose connectors | Barbs, clamps |
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What You'll Learn
- Barbs and clamps are good enough for 45psi
- Rubber fuel hose is easy to install and can be connected using barbed fittings and fuel line hose clamps
- Braided hose can be used from the tank to the hard line
- Aramid fibre shielding is a good alternative to stainless steel
- Stainless steel creates more stiffness, pressure and stress on the line and hose ends
Barbs and clamps are good enough for 45psi
Barbs and clamps are not enough for 45psi or more. For higher pressures, you will need to use something like braided hose or stainless tube. For example, Aramid fibre shielding is more pliable when making a 90-degree bend or any bend. Because stainless creates more stiffness, more pressure and stress are exerted on the line and hose ends wherever there is a bend in the hose routing.
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$69.99 $75.99
Rubber fuel hose is easy to install and can be connected using barbed fittings and fuel line hose clamps
When considering the pressure exerted with fuel at 60 psi, aramid fibre shielding is a better option than stainless steel. Fibre is more pliable when making a 90-degree bend or any bend. Stainless steel creates more stiffness, more pressure and stress on the line and hose ends wherever there is a bend in the hose routing.
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Braided hose can be used from the tank to the hard line
Barbs and clamps are not enough for 45 psi or more. Rubber fuel hose is easy to install and is typically connected using standard barbed fittings and fuel line hose clamps. It must be rated for fuel or be labelled as meeting one of the following SAE grades: SAE J30R7 is carburettor-rated fuel hose and should only be used in limited runs up to 50 psi. SAE J30R9 is fuel injection-rated fuel hose which can handle up to 100 psi. While easy to install, rubber hose has some downsides and shouldn't be used to plumb an entire fuel system: it starts degrading as soon as fuel hits it. With the exception of J30R9-rated hose, it will leak fuel vapours which can leave your garage or vehicle smelling like raw fuel.
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Aramid fibre shielding is a good alternative to stainless steel
Barbs and clamps are good enough for 45 psi, but not for 45 psi or more. For a 60 psi fuel line, you may want to consider aramid fibre shielding as an alternative to stainless steel. Aramid fibre is a good alternative because it is not nearly as heavy as stainless steel. It is also more pliable when making a 90-degree bend or any bend. Stainless steel creates more stiffness, which means more pressure and stress is exerted on the line and hose ends wherever there is a bend in the hose routing. This is especially important to consider when the line is full of fuel at 60 psi.
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Stainless steel creates more stiffness, pressure and stress on the line and hose ends
To address this issue, some people choose to use aramid fibre shielding instead of stainless steel. Aramid fibre is more pliable when making bends, which can help to reduce the pressure and stress on the line and hose ends. However, it is important to note that aramid fibre is not as durable as stainless steel and may not be suitable for all applications.
Another option for reducing the pressure and stress on the line and hose ends is to use barbed fittings and fuel line hose clamps. These fittings are typically used with rubber fuel hose, which is easy to install and can be rated for up to 50 psi. However, rubber fuel hose has some downsides, such as degradation and fuel vapour leakage, which can be a problem for some applications.
In summary, stainless steel can create more stiffness, pressure and stress on the line and hose ends due to its weight and lack of pliability. To mitigate these issues, alternative materials such as aramid fibre or rubber fuel hose with barbed fittings can be used, depending on the specific requirements of the application.
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Frequently asked questions
Rubber fuel hose is typically connected using standard barbed fittings and fuel line hose clamps. Braided hose is also used for fuel lines.
It must be rated for fuel or be labelled as meeting one of the following SAE grades: SAE J30R7 is carburetor-rated fuel hose and should only be used in limited runs up to 50 psi. SAE J30R9 is fuel injection-rated fuel hose which can handle up to 100 psi.
It starts degrading as soon as fuel hits it. With the exception of J30R9-rated hose, it will leak fuel vapours which can leave your garage or vehicle smelling like raw fuel.
Aramid fibre shielding is a good alternative to stainless steel. It is more pliable when making a 90-degree bend or any bend. Stainless steel creates more stiffness, pressure and stress on the line and hose ends wherever there is a bend in the hose routing.
Barbs and clamps are good enough for 45 psi, but not for 45 psi or more.
