What size fuel line should I run?
No matter how many bends and what not you have in the line to the pump, you still cannot flow more than the 5/16 tube can supply. In the short run, you can make 3/8 rubber fuel line connect 1/2 and 3/8 hard line. Not a good long term, but it will work until you have time.
How big of fuel line do I Need?
You must have a mighty long car. In order to have a gallon of fuel in a 5/8" line it would have to be about 64' long. A 1/2" line would be about 96' to hold a gallon of fuel. (You must log in or sign up to reply here.)
How to determine proper gas line size?
foot line find the size of pipe needed to carry 488.75 CFH. Notice that we barely miss the 1 ¼” pipe. When it comes to gas line sizing, you ALWAYS round up. Therefore the minimum pipe size for these two sections is 1 ½”. So to recap, follow this procedure anytime you calculate the gas line size: First, calculate the distance from the meter
What size is a fuel line?
What size is 6an fuel line? Similarly one may ask, what size are fuel lines? Most stock applications came with 5/16-inch fuel line, but for many street vehicles and mild race applications 3/8-inch (AN 6) fuel line is a good upgrade. High performance applications and racers using alcohol will use 1/2-inch (AN 8) fuel line.
How do I calculate fuel line size?
A lot of aftermarket pumps will list the required line sizes....Recommended Size, Based on Horsepower.Recommended Fuel Line Size (from the tank to the pump)Engine OutputSize (inches)Size (AN)350-450 hp3/8 in.-6450-650 hp1/2 in.-8650-1,000 hp5/8 in.-101 more row•Sep 16, 2017
How much horsepower does a 3/8 gas line use?
A 3/8”id fuel line can easily support 600 HP given sufficient “pump head”! Given a big enough pump a 3/8” steel line could support 1000 HP. The simple way to know is to install an electronic fuel pressure gauge. If the pressure falls as the engine RPM's go up you need more pump head.
Which is bigger 5/16 fuel line or 3 8?
The 5/16″ fuel line is actually perfect for smaller outboards. Being a little smaller than the 3/8″ hose, it works great for little kicker motors, and sailboat outboard engines.
What size fuel return line should I use?
The Fuel Return Line should be at least the same size, or one size larger than the supply. Make sure there are no sharp bends or kinks. The return line should direct fuel close to the bottom of the tank and away from the pickup.
How much horsepower will a 5/16 fuel line support?
If you're just cruising around with a carbed SBC, you'll probably be fine with a 5/16" line up to about 500 HP because you'll never tax the system enough to starve the motor of fuel.
What size fuel line do I need for 1000 HP?
There are many factors that can dictate fuel line size and it is not just horsepower goals. For instance, an 8AN feed line and 6AN return line on a 1000 horsepower gasoline or race gas powered LS with 30psi is sufficient.
What size is 3/8 fuel line?
Understanding Fuel Line Fittings: Straight Thread (and AN) vs. Tapered ThreadAN SizeTube or Hose ODTube or Hose ID-4¼”.172”-55/16”.062”-63/8”.297”-81/2”.391”9 more rows•May 6, 2015
What is the outside diameter of 3/8 inch fuel line?
JEGS Aluminum Fuel Line | 3/8 Outside Diameter | 0.035” Wall | 25 Feet | 25 PSI Maximum Pressure | Seamless.
What is the outside diameter of 5/16 fuel line?
Universal Fuel Line - 3/16" ID x 5/16" OD, Sold by the FootInside Diameter3/16 InchOutside Diameter5/16 InchTypeFuel Tank Line
Is a shorter fuel line better?
In the case of fuel lines, two influences increase friction and therefore fuel pressure drop. The first is the length of the fuel line – the longer it is the more friction will be incurred. The second is flow rate – as the rate is increased so is friction.
Does size of fuel line matter?
Does size really matter when it comes to fuel lines? According to the fuel delivery system experts at Fuelab, it does. It's because fuel line size and length have a direct effect on the amount of fuel pressure drop your fuel system will experience.
What size is standard fuel line?
The sizes typically used in fuel systems are AN6 / Dash 6 / -6, which equates to a thread measuring 9/16” x 18 (threads per inch) with a hose bore around 3/8”, and AN8 / Dash 8 / -8 which has a thread measuring 3/4” x 16 (threads per inch) with a hose bore of around 1/2”.
Do you need fuel return line?
Return-style systems require fuel pumps to work all the time—it never shuts off as long as the engine's running, which can shorten the life of the pump. Your plumbing system can become more complicated because you have to run a separate return line from the regulator to the tank.
Do you need a fuel return line on fuel injection?
Setting up fuel lines for fuel injection. That's because almost all fuel injection systems require higher fuel pressures than a carbureted system, and most also require a fuel return line, not often found on a carbureted vehicle.
Does a Holley Blue fuel pump need a return line?
Fuel pressure is pre-set at 15 PSI and both a pressure regulator and 3/8" return line to the tank are required.
Why does a fuel tank have a return line?
With a return line the fuel pump can provide pressure to the injectors without changing the pressure in the fuel tank. In either case, fuel is departing the tank for good at whatever rate the engine is burning it. Also, liquid gasoline will turn into a vapor, which should offset the negative pressure.
Why should fuel pressure lines be sized?
Fuel pressure lines should be sized to expected capacity and fluid velocity should be kept below 4 FPS to reduce the Reynolds Number which signifies excess turbulence and will result in reduced performance . With such low volume use of the fuel system capacity, return fuel lines are usually inadequately sized.
What is the purpose of a return fuel line?
The purpose of the return line is to return unused fuel delivered to the engine back to the fuel tank. Any pump ran at a constant volume cannot be dead headed.
When the pressure drop in the line is not sufficiently close to ambient, the gasses do not condense back into
When the pressure drop in the line is not sufficiently close to ambient the gasses do not condense back into the fuel and the air does not form complete bubbles in the line to escape the fuel in the tank.
Can a fuel pump be dead headed?
Any pump ran at a constant volume cannot be dead headed. When the fuel is bypassed it experiences a pressure drop and any air dissolved or entrained in the fuel boils out forming air bubbles, as well as any fuel components transforming into a gaseous state.
How much methanol does a gasoline engine use?
Methanol fuels use approximately double the amount of fuel of gasoline to reach a target power level. In the event that you are using Methanol in replacement of an intercooler (commonly referred to as running the engine "wet") you may use even more Methanol.
Can you oversize a fuel line?
Also Yes, having a very large fuel line on the pressure side (feed line) without enough volume can slow fuel flow and cause issues. On the return line, you cannot oversize the line as it is simply a vessel for getting unused fuel back to the fuel tank.
A Reference Chart for Propane Tank Pipe Sizes
It is best to always consult a qualified and certified technician to advise on the best piping that is needed for your propane tank to properly fuel your appliances. Provided here is a guide for more information for you to refer to.
What You Need to Know About Copper Piping with Your Propane Tank
The service line from the propane tank to the building must be safe and maintain a constant energy supply for the appliance needs. Copper piping is an exceptional option for this connection line as it is flexible and bendable to maneuver through other appliances and obstacles.
What is Polyethylene Tubing?
Not to be confused with PVC piping, which is polyvinyl chloride, polyethylene, PE for short, is often used in underground utility work. PE has the added benefit over PVC of being more flexible and is able to work with natural gasses as PVC cannot.
How to Read this Chart
Before jumping into the Line Sizing Chart, here is a key for you to refer to in order to translate any abbreviations you do not know: