What size is standard fuel line?
Typically, these 1/4" and 5/16" line sizes are in use for low flow or OEM systems, but are commonly used in high performance applications for pressure gauges as well as plumbing between the Regulator and Intake Manifold.
How thick is a fuel line?
Recommended Size, Based on HorsepowerRecommended 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 should a fuel return line be?
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.
Does size of fuel line 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.
What size is metal fuel line?
For most recent cars, supply is 5/16" and return and vent are both 1/4".
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.
How do you measure fuel line diameter?
1:013:13How To Measure the Diameter Of Any Hose - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo it's 6 over 16 so 6 6 / 16 very very simplest and all that you do is you're taking 6 sixteenthsMoreSo it's 6 over 16 so 6 6 / 16 very very simplest and all that you do is you're taking 6 sixteenths of an inch and divide it by 2 if you can so 6 16 divided by 2 is 3/8.
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 much pressure is in a fuel return line?
The return only sees about 5 PSI of fuel flow. So no reason for it to be bigger. If your regulator is in the EFI unit and not back at the tank, then there should be no need for a larger return line as there should be minimum flow/pressure in the line.
Can you have to big of fuel line?
Can I 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.
Does fuel line size affect fuel pressure?
It's because fuel line size and length have a direct effect on the amount of fuel pressure drop your fuel system will experience. Too much pressure drop can inhibit the performance of both carbureted and EFI systems and can adversely affect the way a bypass or return-style regulator operates.
Can a fuel line be too long?
Your fuel line should be about the same. Too long and your engine may have trouble scavenging for fuel. This makes it difficult to tune the engine.
What is the best material for fuel lines?
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.
Can you use rubber hose for fuel line?
Standard rubber vacuum or heater hose should never be used in fuel applications. The hose will deteriorate from the inside out and can plug fuel filters and carburetors with rubber debris, long before it springs an external leak.
Can you use fuel injection hose for fuel line?
0:063:04Fuel Line and Fuel Injection Hoses | ACDelco - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd fuel line hoses and why the correct replacement hoses are vital for use with today's gasolineMoreAnd fuel line hoses and why the correct replacement hoses are vital for use with today's gasoline and diesel fuel blends. It's simple modern fuel hoses are necessary with modern fuels.
Can you use air hose for fuel line?
do not use an air line for gasoline.
What size gas line did GM use?
GM used a 5/16th inch inside diameter fuel line for all motors that were factory rated at 300 horsepower or less. Over 300 horsepower and the factory used a 3/8th inch ID gas line. That is as simple as it can be, except for one big problem. The motor was installed on the assembly line. Long after the body was built at the Fisher Body plant that could have been across the street, or across the state from the assembly line.
Can a round drive shaft come in contact with a gas line?
As to passing through the torque box in the center of the frame by placing the gas line in the corners of the frame the round drive shaft could never come in contact with the gas line even if the carrier bearing failed completely. High horse motors produce more heat than a standard engine.
Does Chevy 409 have a return line?
Well, Chevy thought it was worth upping the size and re-routing for some reason. On one of the 409's there was actually a return line, again, I assume that was to keep the fuel cooler.
