For high-performance racers and modification enthusiasts, fuel system stability directly dictates horsepower output and safety. Building a leak-proof, high-efficiency fuel system relies on two core components: fuel cell fittings and an fitting kits.
This article explores how to correctly select and install these critical parts, specifically highlighting why brands like EVIL ENERGY are a top choice, and answers popular search questions regarding sizing and installation.
Why Fuel Cell Fittings are the Core of the System
Fuel cell fittings serve as the critical bridge between your racing tank and the external lines. No matter how much horsepower your engine generates, if these connections restrict flow or develop a leak, performance will suffer immediately.
High-quality components are typically made from Anodized Aluminum, offering corrosion resistance and lightweight properties. When selecting hardware for your system, the most common option is the “bulkhead” design, which ensures the adapter seals securely against the tank wall. Additionally, units equipped with a Rollover Valve are a safety essential, preventing fuel from leaking through the vent in the event of a crash.
Note: Never mix different materials when installing these parts. Aluminum adapters should always be paired with aluminum line accessories to prevent galvanic corrosion.
Simplify Your Build with AN Fitting Kit
Rather than purchasing every single elbow and straight connector individually, it is far more efficient to choose high-quality an fitting kits. These kits are complete solutions, typically containing Hose Ends, adapters, and the corresponding fuel hose.
The benefits of using an fitting kits include:
- Compatibility Assurance: All components within fitting kits are tolerance-matched, eliminating the risk of leaks due to mismatched parts.
- Cost-Effectiveness: Compared to buying individual parts, an fitting kits offer significantly better value.
- Variety: Most an fitting kits provide a mix of 45-degree, 90-degree, and 180-degree fittings to meet complex routing requirements.
When planning routing inside the engine bay, a premium set of components ensures your installation looks clean and professional. Always verify that the hardware you purchase specifies a pressure rating that matches your fuel pump output.
Why Are EVIL ENERGY Fuel Cell Fittings the Top Choice for Mods?
Many beginners think a fuel cell is just a tank for holding gas, but in the high-performance realm, the design of every one of the fuel cell fittings hides sophisticated engineering. EVIL ENERGY fuel cell systems solve traditional pain points through the following technical details:
1. Aviation-Grade Material and Leak-Proof Design
Ordinary fittings are prone to stripping or corrosion, whereas EVIL ENERGY manufactures their fuel cell fittings using 6061-T6 Aluminum Alloy.
- Craftsmanship: Precision CNC machining and Anodized treatment not only improve engine bay aesthetics but, more importantly, resist the strong corrosiveness of E85 ethanol fuel.
- Sealing: Their Bulkhead design fuel cell fittings come standard with dual PTFE washers, completely eliminating the risk of micro-leaks at the tank wall interface.
2. Safety Core: Rollover Valve
This is the most underrated component in the EVIL ENERGY system. These special fuel cell fittings contain a gravity-sensing ball mechanism inside.
- How it works: When the vehicle drives normally, the valve opens to keep the tank vented; if the vehicle rolls over (upside down), the gravity ball immediately seals the vent.
- Value: This design prevents fuel from pouring out of the vent tube, drastically reducing fire risks.
3. Anti-Slosh Foam
All EVIL ENERGY aluminum tanks are filled with special anti-slosh foam. While not technically external fuel cell fittings, this foam works in conjunction with the fittings to prevent fuel starvation during hard cornering.
EVIL ENERGY AN Fitting Kits Buying Guide: PTFE vs. CPE
When selecting an fitting kits, EVIL ENERGY offers two main material types. Choosing the wrong material is the primary cause of fuel smells and hardened lines later on.
Here is an in-depth comparison to help you choose the right kits:
| Feature | EVIL ENERGY CPE (Synthetic Rubber) Kits | EVIL ENERGY PTFE (Teflon) Kits |
| Liner Material | CPE Synthetic Rubber (Chlorinated Polyethylene) | PTFE (Teflon) Plastic Liner |
| Compatibility | Gas, Diesel, Oil | E85 Ethanol, Methanol, Race Gas, Nitrous |
| Pressure Rating | Approx. 500 PSI | 1000+ PSI (Extreme Pressure) |
| Temp Range | -40°F to 257°F | -76°F to 446°F |
| Permeability | May release a slight fuel smell over time | Zero Permeability (No fuel smell) |
| Installation | Easier (Push-lock / Cutter style) | Moderate (Requires installing the Olive/Ferrule) |
| Recommended Use | Oil coolers, Transmission lines, Standard Gas | Turbo, E85 Mods, In-Cabin Routing |
Expert Advice: If your lines need to run through the cabin, or you plan to use E85, we strongly recommend purchasing EVIL ENERGY PTFE an fitting kits. Although slightly pricier, they guarantee zero fuel smell inside the car.
To help you complete your installation quickly, we have compiled answers for the four most core questions regarding fuel cell fittings and an fitting kits.
FAQs About Fittings
1. What size fittings are on a fuel cell?
EVIL ENERGY standard racing fuel cells typically feature: Two -10 AN Outlets, Two -10 AN Returns, and Two -10 AN Vents.
Note: While the ports are usually ORB (O-ring Boss) style, the tank usually ships with adapters. Depending on your horsepower needs, you can convert these by purchasing different fuel cell fittings adapters to -6 AN or -8 AN.
- Recommendation: Use -6 AN for <500HP; -8 AN for 500-800HP; keep -10 AN for 1000HP+.
2. What are fuel line fittings called?
They are collectively called AN Fittings (Army-Navy), but are also frequently referred to as JIC (Joint Industry Council) fittings.
When you search for an fitting kits, you are technically looking for 37-degree flare fittings that meet SAE standards. EVIL ENERGY connectors strictly follow this military standard, ensuring their an fitting kits are seamlessly compatible with any standard AN interface.
3. How to properly mount a fuel cell?
Proper mounting requires a combination of a solid metal frame and precise line connections.
- Physical Mounting: You must use a metal cage or dedicated straps to lock the cell to the chassis; never rely on gravity alone.
- Fitting Connection: When installing fuel cell fittings, ensure nylon washers are used to prevent damaging the tank surface.
- Routing: Unroll your an fitting kits, measure, and cut the hose. EVIL ENERGY swivel hose ends allow you to assemble the system using simple wrenches.
4. What size fittings for the fuel line?
Size selection depends directly on horsepower requirements. EVIL ENERGY an fitting kits cover all mainstream specs.
- -6 AN (3/8″): Suitable for < 500 HP (Fuel Return / Transmission Cooling)
- -8 AN (1/2″): Suitable for 500 – 800 HP (Main Feed / Performance Street)
- -10 AN (5/8″): Suitable for 800 – 1200 HP (Track Only / Drag Racing)
When purchasing an fitting kits, always confirm that the adapters for the fuel cell fittings inside the kit match the pre-drilled ports on your tank.
Summary
Whether you are repairing aging lines or building a brand-new track machine, choosing EVIL ENERGY allows you to get the job done efficiently. Their high-precision fuel cell fittings solve sealing challenges, while their comprehensive an fitting kits make laying out fuel lines as simple as putting together a puzzle.
Check your build list now, ensure you have selected the correct size fuel cell fittings and enough an fitting kits, and start your modification journey today.
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