Go With The Flow
Adding volume and reducing restriction with Metco Motorsportsâ€™Â billet fuel rails for the Coyote 5.0
By Steve Turner
Photos by SID297 and StacyStangz
It has become acceptableâ€”maybe even sportingâ€”to see how far you can push the stock components of a Mustang. Certainly it is fun to see how far Fordâ€™s creations will go. Most of us take these cars far beyond the intent of the engineers that created them with just bolt-ons.
However, as you push, you do start to find limitations in the stock components. Of these components, one of the most resilient is the fuel system. With the simple addition of higher-flowing fuel injectors and, maybe, a fuel pump voltage booster the factory returnless fuel system has shown it will support a lot of power.
That said, there are always areas where you can augment the â€œstockâ€ system to expand its scope. In the case of the SVTP GT we had pushed the performance to 576 horsepower and 475 lb-ft of torque at the rear wheels with nothing more than a set of 47 lb/hr injectors and tuning. With the rear-wheel power approaching 600, it seemed like a good time to ensure those injectors were getting all the fuel they deserved.
As such, we picked out a set of billet fuel rails from Metco Motorsports for the SVTP GT. If you arenâ€™t familiar with Metco, the company got its start making billet lower control arms and robust driveshaft safety loops for Mustangs and it expanded and grew from there.
â€œMetco Motorsports is a company that largely arose out of our own projects and experience in motorsports. Collectively, we have many years of experience in building cars, designing products, developing products, fabricating products, and racing. Our own need for upgrades and reconfigured parts led to many of our products, Metco co-owner, Rick Bejarnao explained. â€œAnd now here we areâ€”15 years after we officially started the businessâ€”with five capable CNC machines in house running at full capacity.â€
â€œWhile we manufacture a few proprietary products for other retailers, every Metco Motorsports product is our own original design. We never set out to be the cheapest on the market, but we do make every effort to make the highest quality parts that install with little or no modifications,â€ he added. â€œOur parts are designed to fit wellâ€” with no drilling, grinding, or welding necessary for installationâ€”and they must look good, tooâ€¦â€
Looks certainly played a role in selecting the Metco rails for the SVTP GT, but performance was a primary concern for us.
â€œWe developed fuel rails for the Coyote application (and other applications) because we were unsatisfied with the other aftermarket offerings.Â Most aftermarket fuel rails are made from inexpensive, commonly-available extruded stock, which is the familiar aluminum sticks with the fins in the top,â€ Rick said.Â â€œThese extruded rails have a limited internal diameter (often Â½- or 9/16-inch), and in many applications the simple, universal design doesn’t fit well around surrounding components in the engine bay.â€
Going above and beyond to create its rails, Metcoâ€™s design not only provides better fitment, but also allows for a higher volume inside the rails.
â€œWe designed our fuel rails based on blocks of certified 6061 billet, and this starting point allows us to manufacture rails with the largest ID of any rails available:Â 11/16-inch.Â This large internal diameter provides a huge reservoir of fuel at the top of each injector, which reduces the likelihood of pressure fluctuations or momentary lean conditions when the throttle is snapped from cruise to WOT,â€ Rick elaborated. â€œEach fuel rail set is custom-designed for the intended application, and provides maximum clearance for things such as coil packs, air inlets, cooling system components, etc.â€
As you can see in our photos, the rails offer a straightforward install. They fit like a glove, even on our Magnuson supercharged Coyote, and they really dress up the engine too. Performance is important, but it sure doesnâ€™t hurt when a performance mod adds a little style to your engine compartment.