Achieving consistent fuel pressure is non-negotiable for optimal engine performance and reliability. Whether you’re fine-tuning a high-performance race car or ensuring your daily driver runs smoothly, the right fuel pressure regulator is a critical component of your fuel system. It ensures your engine gets the precise amount of fuel it needs under all conditions, from idle to wide-open throttle.
Barry Grant has long been a trusted name in fuel system technology, known for precision and durability. This roundup focuses on Barry Grant regulators and essential supporting components to help you build a complete and reliable fuel delivery system. We’ve compiled a list of top-tier products, from the regulators themselves to mounting brackets, service kits, and gauges, to help you make an informed decision for your vehicle.
The Best Barry Grant Regulators and Accessories
- Barry Grant 2 Port Regulator Diaphragm Kit
- Moroso 65062 Fuel Regulator Mounting Bracket
- HiSport Fuel Injection Pressure Regulator – 3.0BAR
- Aeromotive 13002 Regulator Service Kit, EFI
- Holley 12-804 Chrome Carbureted Fuel Regulator
- Fuel Injection Regulator for GM Chevy Cadillac
- CNRAQR Universal 0-100psi Fuel Pressure Gauge
- Barry Grant Fuel Pressure Regulator 13006
- Barry Grant Mini Regulator 13011
Barry Grant 2 Port Regulator Diaphragm Kit
Maintaining your fuel pressure regulator is essential for long-term performance. This Barry Grant 2 Port Regulator Diaphragm Kit provides the genuine components needed to service your regulator, ensuring it continues to function with the same precision as the day it was new. A worn diaphragm can lead to inconsistent fuel pressure and potential fuel leaks, making this kit a vital part of your maintenance routine.
By using official Barry Grant replacement parts, you guarantee a perfect fit and restore the regulator’s original performance characteristics. This proactive approach to maintenance can prevent unexpected downtime and protect your engine from fuel-related issues.
Moroso 65062 Fuel Regulator Mounting Bracket
A secure installation is the foundation of a reliable fuel system. This Moroso mounting bracket is specifically designed to fit popular Barry Grant regulators, providing a solid and stable mounting point. Constructed from laser-cut steel, it is both lightweight and exceptionally strong, capable of handling the vibrations and stresses of a performance engine.
The bracket’s design allows for easy forming to accommodate custom installations, making it a versatile solution for various engine bays. It can also be used to mount an additional regulator for a nitrous oxide system, offering flexibility for your performance upgrades.
HiSport Fuel Injection Pressure Regulator – 3.0BAR
For those seeking a direct replacement regulator for specific vehicle applications, the HiSport unit is engineered to meet or exceed original equipment standards. This 3.0BAR (approximately 43.5 psi) regulator is a direct fit for a wide range of models, as indicated by its extensive list of compatible OEM part numbers. It is manufactured to ensure long-term stable performance and reliable fuel pressure control.
It is crucial to verify the part numbers from your original component to ensure a correct fitment. This regulator is designed for a straightforward installation, restoring your vehicle’s fuel system to its proper operating specifications.
Aeromotive 13002 Regulator Service Kit, EFI
Regular maintenance is key to the longevity of any high-performance component. The Aeromotive 13002 service kit contains all the necessary internal parts to rebuild your fuel pressure regulator. This kit is compatible with several popular Aeromotive regulator models, which are often used in conjunction with or as alternatives to Barry Grant systems in fuel-injected applications.
Rebuilding your regulator with this kit can restore its performance and responsiveness, ensuring accurate fuel pressure regulation. It’s a cost-effective way to extend the life of your investment without needing to purchase a completely new unit.
Holley 12-804 Chrome Carbureted Fuel Pressure Regulator
For carbureted applications, maintaining the correct fuel pressure is just as important. The Holley 12-804 regulator offers adjustable fuel pressure from 1 to 4 psi, which is the typical range required by most carburetors. Its compact design and polished chrome finish make it a popular choice for classic and street performance vehicles where appearance matters.
Featuring 3/8″ NPT ports with one inlet and two outlets, it provides flexibility for your fuel line routing. The integrated .220″ restriction helps to control fuel flow and stabilize pressure, preventing the carburetor float from being overwhelmed.
Fuel Injection Regulator for GM Chevy Cadillac
This fuel injection pressure regulator is designed as a direct replacement for a wide array of GM vehicles, including models from Chevy, Cadillac, GMC, and Pontiac between 1994 and 2005. It is constructed from high-quality materials to ensure maximum performance and durability, matching the specific requirements of these engines.
Each unit is factory tested to meet or exceed OEM specifications, providing confidence in its performance and reliability. The application-specific design allows for a quick and straightforward installation, making it an excellent solution for restoring proper fuel pressure on these popular vehicles.
CNRAQR Universal 0-100psi Fuel Pressure Gauge
You can’t manage what you don’t measure. This CNRAQR fuel pressure gauge is an essential tool for monitoring your fuel system’s health. With a clear 0-100 psi range and a 1.5-inch dial, it provides at-a-glance feedback on your regulator’s performance. The liquid-filled mechanism dampens needle vibration, ensuring a steady and readable display even in a high-vibration engine environment.
The kit includes a versatile 6AN male to female swivel adapter with a built-in 1/8″ NPT port for the gauge. This allows for easy installation into most aftermarket fuel systems, providing a dedicated point to monitor pressure directly from the fuel rail or regulator.
Barry Grant Fuel Pressure Regulator 13006
The Barry Grant 13006 is a core component for many serious performance fuel systems. Designed for precision and reliability, this regulator is built to handle the demands of high-horsepower applications. Its robust construction and accurate pressure control make it a favorite among racers and enthusiasts who require consistent fuel delivery under extreme conditions.
As a staple in the Barry Grant lineup, the 13006 model offers the quality and performance the brand is known for. It is engineered to provide stable base pressure, which is the foundation for proper air/fuel ratio management and optimal engine performance.
Barry Grant Mini Regulator 13011
For applications where space is at a premium, the Barry Grant Mini Regulator 13011 offers a compact solution without sacrificing performance. This smaller regulator is ideal for tight engine bays or secondary systems, such as nitrous oxide or turbocharger boost-referenced fuel enrichment. Despite its size, it maintains the same commitment to precision and durability.
The mini regulator provides the same reliable pressure control as its larger counterparts in a more space-efficient package. It’s an excellent choice for modern vehicles or custom installations where finding room for additional components can be a challenge.
Buying Guide: What to Look For in a Barry Grant Fuel Pressure Regulator
When I’m building or tuning an engine, consistent fuel pressure is non-negotiable. It’s the bedrock of proper air/fuel ratios, and that’s where Barry Grant regulators come in. They have a solid reputation, but picking the right one for your setup is key. I’ve found that focusing on a few core areas makes the decision much easier.
First, you need to think about your fuel system’s configuration. Are you running a return-style or returnless system? This is the biggest fork in the road. For a traditional return-style system, you’ll be looking at a regulator like the BG “Boost Referenced” model. It has both an inlet and a return port, allowing excess fuel to cycle back to the tank. This is what most high-performance and race applications use because it keeps fuel cool and pressure stable. If your vehicle is a newer model with a returnless system from the factory, you’ll need a “Bypass Regulator” that gets spliced into the system, typically near the fuel rail, to create a return path.
Next, consider the fuel you’re using. This might seem minor, but it’s critical for longevity. Standard regulators are built for gasoline. If you’re running any kind of alcohol-based fuel—like methanol or E85—you absolutely need a regulator with alcohol-compatible internals. Barry Grant offers specific diaphragms and seals designed to withstand the corrosive nature of these fuels. Using a gasoline-only regulator with E85 is a recipe for a failed diaphragm and a dangerous fuel leak.
Then there’s the matter of pressure range and adjustability. What base pressure does your fuel injection system or carburetor require? Most EFI systems run between 40-60 psi, while carburetors need much lower pressure, around 4-7 psi. Make sure the regulator’s adjustable range covers your target pressure. Also, if you’re running a forced induction setup (turbo or supercharger), a boost-referenced regulator is a must. It increases fuel pressure on a 1:1 ratio with boost pressure, ensuring your injectors can deliver the necessary fuel under load. For a naturally aspirated engine, a standard vacuum-referenced regulator is perfect, as it adjusts for engine load to maintain a consistent pressure drop across the injectors.
Finally, look at the physical mounting and port sizes. Does it need to bolt directly to your fuel rail, or will it be mounted remotely with hoses? Are the inlet and outlet ports AN -6, -8, or -10? Matching these details to your existing hardware saves a huge amount of installation headache. Getting the right Barry Grant regulator for consistent fuel delivery isn’t just about buying a brand name; it’s about matching its features precisely to your engine’s demands.
FAQ
What is the main benefit of a Barry Grant regulator over a cheaper brand?
In my experience, the biggest benefit is consistency and durability. Barry Grant regulators are known for their precise control and their ability to hold a set pressure rock-steady, even when engine load or fuel demand changes rapidly. Cheaper regulators can sometimes have a “pressure creep” or struggle to maintain a stable baseline, which directly impacts your air/fuel ratio and engine performance. The build quality, especially in the diaphragm and spring assembly, is typically superior, leading to a longer service life and more reliable operation.
How often should I service or rebuild my fuel pressure regulator?
There’s no single mileage interval, as it depends on use and fuel type. For a street-driven car, I’d recommend inspecting it as part of your annual tune-up. Look for any signs of fuel weeping from the diaphragm or vacuum reference port. If you race the car or run aggressive fuels like E85, you should check it more frequently. A good rule of thumb is to consider a diaphragm replacement every couple of seasons in a race car. If your fuel pressure starts becoming erratic, that’s a clear sign the internal components need attention.
Can I use a single Barry Grant regulator for a dual fuel pump setup?
Yes, you can, but the setup is crucial. You wouldn’t run the pumps in series into a single regulator inlet. Instead, the best practice is to run the outputs from both pumps into a “Y” block or a common log, and then feed that single source into the regulator. The regulator’s job is to control the pressure from the common source, not to manage the flow from two separate inputs. Just make sure the regulator’s flow capacity and your line sizes are adequate for the combined volume of both pumps.
My pressure gauge fluctuates at idle. Is my regulator faulty?
Not necessarily. A slight, rhythmic pulsation that matches the engine’s RPM is often normal, especially if you’re using a mechanical gauge. This pulsation is usually from the fuel pump itself. However, if you see a large, erratic swing in pressure (more than a couple psi), then you likely have an issue. It could be a failing regulator diaphragm, a clogged fuel filter restricting flow, a weak fuel pump, or even air trapped in the lines. Start by checking for vacuum leaks at the reference hose on the regulator, as that’s a common and easy fix.
What’s the difference between a rising rate and a boost-referenced regulator?
This is a common point of confusion. A standard boost-referenced regulator, like many from Barry Grant, increases fuel pressure at a 1:1 ratio with boost. For every 1 psi of boost, fuel pressure increases by 1 psi. This maintains the injector’s flow capacity. A rising rate regulator, often called an FMU (Fuel Management Unit), increases pressure at a higher ratio, like 6:1 or 12:1. This is a band-aid method to add more fuel by over-pressurizing the injectors and is not ideal for precision tuning. For a proper forced induction setup, a 1:1 boost-referenced regulator is the correct choice for consistent fuel delivery.