Fuel Hose Sizes
| AN Size | Tube or Hose OD | Tube or Hose ID |
| -6 | 3/8” | .297” |
| -8 | 1/2” | .391” |
| -10 | 5/8” | .484” |
| -12 | 3/4” | .609” |
Full Answer
What is the size of a standard hose?
12 rows · Female Metric – “L” Swivel – with O-Ring – 90º Hose Couplings; Male Metric – “S” Series Hose ...
What size fuel line should I use?
5 rows · Sep 16, 2017 · Recommended Fuel Line Size (from the tank to the pump) Engine Output: Size (inches) Size ...
What is the correct size fuel line?
Lots of strange information out on the internet regarding fuel line sizing and it seems like most of the time people run way more diameter fuel line than they need. This is an interesting article that I came across that seems to be pretty relevant. Quick reference for AN to Inch line conversion:-6AN = 3/8"-8AN = 1/2"-10AN = 5/8"-12AN = 3/4"
How to tell fuel tank size?
Dec 31, 2014 · Hose Size Chart Fractional Equivalent All dimensions are in inches unless otherwise noted. AN I.D. O.D.-4: 7/32" 7/16"-6: 11/32" 35/64"-8: 7/16" 41/64"-10: 9/16" 51/64"-12: 11/16" 15/16"-16: 7/8" 1 5/32"-20: 1 1/8" 1 7/16"-24: 1 3/8" …
How do I know what size fuel hose I need?
Fuel pumps are sized to feed your system with enough fuel to optimize engine performance....Recommended Size, Based on Horsepower.Recommended Fuel Line Size (from the tank to the pump)Engine OutputSize (inches)Size (AN)350 hp or less5/16 in.-5350-450 hp3/8 in.-6450-650 hp1/2 in.-81 more row•Sep 16, 2017
What size is fuel hose?
Fuel Hose SizesAN SizeTube or Hose ODTube or Hose ID-63/8”.297”-81/2”.391”-105/8”.484”-123/4”.609”Mar 6, 2019
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.
Does bigger fuel line size matter?
Fuel line diameter matters A LOT! A larger diameter is generally better, but the correct diameter is the best choice. If the diameter is too small: you won't be able to support your horsepower goal. If the diameter is too big: the lines will take longer to pressurize.
Is 3/8 fuel line big enough?
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.
What type of fuel line should I use?
The best fuel line material depends on your needs. However, the best material for fuel lines is polytetrafluoroethylene or PTFE. PTFE fuel line is made of plastic material specifically known as Teflon. This fuel line material is impervious is resistant to the degenerative fuel effects which could form vapor barriers.
What is the OD of 3/8 fuel line?
FUEL LINE HOSE 9.5MM (3/8") NITRILE TUBE ID 10MM X OD 16MM NON-FUEL INJECTION 50 PSI - Collier & Miller.
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
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.
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.
How important is fuel line size?
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.
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.
Fuel Pressure Supply & Return Lines
Fuel pressure supply lines are usually adequate for maximum performance, with a preference of 125%-150% fuel line delivery at 100% engine power. This is to ensure adequate delivery of fuel in the event of an unseen problem (i.e. pump speed/voltage/dirty filter).
Fuel Line Bypasses
Fuel line bypasses are commonly called a regulator which is incorrect. A regulator controls pressure on the outlet regardless of the input pressure on the inlet. A fuel bypasses function is to bleed off a preset pressure to the outlet; the outlet pressure should be atmosphere and is determined by any restriction downstream.
Fuel Line Sizing Calculation
This formula for pressure loss is based on the Colebrook equation using the Darcy-Weisbach friction coefficient.
How to measure fuel line diameter?
Place the top of a 1/4-inch wrench with an open end over the fuel line. Slide it carefully over the line so that it fits snugly against the tubing. Read the wrench's measurements to determine the diameter of the fuel line . Place a caliper over the fuel line if the wrench did not give an accurate reading. Calipers are used to measure distance ...
What is the fuel line?
The fuel line, along with the other parts of a fuel system, are responsible for delivering the fuel from the fuel cell into the carburetor. It is important to have the right size so the vehicle operates efficiently. The size of the fuel line is determined by the outside diameter. Completing the measurement is simple and takes relatively few tools. ...