Fuel line size
Apr 08, · FUEL LINE SIZE (FROM PUMP TO REGULATOR) Fuel line size is determined by the horsepower of the engine. Up to HP: 5/16" or.4AN Up to HP: 3/8" or.6AN Up to HP: 1/2" or.8AN Up to HP: 5/8" orAN RETURN LINE SIZE The size of the return line is determined by the output of the fuel pump. Up to *29 gal/hr ( liter/hr): 1/4" or.3AN. Apr 02, · What fuel line size do I need to support around hp? I have a gph Holley mech fuel pump w/ 3/8 fittings, and I thought I had 3/8 line. But, I being told the stock line for my car is 5/ I know if it's orig, I should probably replace it, but I've got a million other mini-projects to go before I .
Have you ever noticed that there are different sizes for fuel lines? Does it really matter? Of course, it does!
Here is a more in-depth break down of the differences in the hoses and the biggest reasons why it is important to have the right ones installed! Obviously, the difference between the two fuel lines is one is smaller than the other. We get it. But there is a little more to it than that. Being smaller allows it to go easily into a smaller rigging tube, depending on the application. Still allowing the proper amount of fuel to get to the engine without having any problems. Look at it like this.
You can breathe through a straw. But over time you will not be getting the proper amounts of air that you need and will eventually pass out! The same applies for the engine. This causes premature failure of the fuel pumps and possibly major damage to the actual powerhead of the engine! Sometimes we like to overthink things and make them more complicated than they need to be. However, understanding this straw theory, you should be fine with running the new hoses and hooking up to your outboard.
It is also very important how to do burpees exercise understand that there are different types of fuel hoses. And different specifications for different applications put in place for safety purposes.
Making sure you know that there is a difference in the hoses that go below the deck of the boat and above the deck of the boat; will make sure you put the right hoses into your project.
This is just a quick break down of the difference and ratings of the fuel hoses. For a more in-depth break down of the hoses and what their ratings are. The general rule of thumb still stands regardless of what manufacturer engine you have!
The basic functionality of a combustion engine and the fuel demand for the horsepower is the same! You will also know what fuel line is supposed to be there by looking at the hook up on the engine.
Wherever you hook up the fuel line on the engine there will be how to build a yard fence hose barb. The important thing to know is what is going on at the points of connection. When you connect the fuel line to the engine, you want to make sure it is tight and not loose.
Being loose will give an air leak which is a place to cause problems. A lot of times when there is an air leak in the fuel lines, the engine will lose prime after sitting for a little while. Then you have to prime up the system again before running! If the fuel pump is sucking in air every time it tries to get fuel, it will aerate the fuel and run the engine lean. Giving you all kinds of different problems! Safety and longevity should be a huge concern for any boater.
Having a fuel leak on a boat is no joke! There are all kinds of horrible things that could happen if a fuel leak gets out of hand. Or even catches on fire! In order to help give an in-depth perspective of how to safely deal with the issue if you ever have to! Another thing to think about is the longevity of the engine.
Going back to the straw theory, having the correct fuel line installed will what are the advantages and disadvantages of mobile phones ensure the proper fuel consumption for the engine. Thus, keeping up and even prolonging the life of the engine. Hopefully, this gets you in the right direction and now you understand what size fuel line you should put on your boat!
You might also find a lot of value in what size fuel line for 500hp article that we wrote about Whether an Inboard Boat or An Outboard Boat is best for you! And if you would like to support us to continue bringing you great content, please click the link below to Amazon where we get a commission from anything you are already going to buy!
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We also have some boating adventures from living in the Florida Keys! Thanks for taking the time to read our article and we hope that it has helped you decide what fuel line you will be running to your outboard.
Aaron has been working in the Marine Industry for over a decade and holds certifications for Yamaha and Mercury Marine. It is not uncommon for him to own and be working on at least three different boats at any given point in time! You got the boat packed with your gear and your best friends. When you go to start the engine, it simply clicks. Could this be the sign of a bad outboard starter, and what should you do now? As to Talk to other boaters and you will likely find out that many owners don't know the first thing about the water pump, let alone how to tell when they have a bad outboard water pump!
Yet, what size fuel line for 500hp vital Skip to content Have you ever noticed that there are different sizes for fuel lines? The Difference Between the Two Sizes Obviously, the difference between the two fuel lines is one is smaller than the other.
The Straw Theory Look at it like this. Above and Below Deck Fuel Lines It is also very important to understand that there are different types of fuel hoses. They have a fire-resistant covering on the outside. They have the least permeable rating and are designed to have fuel in them at all times. A2 Hoses: Are used for the fuel tank vent hose below the deck. They are basically the same as the A1 hoses but do not have the fire-resistant covering that is on the outside of the hose.
Basically the same as the A2 hose but without the fire-resistant covering on the outside of the hose. The Rule of Thumb For Manufactures The question always comes up; what about my specific engine and what does that manufacture say? It really helps us out and we thank you so much for your support! Check Us Out! Continue Reading.
The Difference Between the Two Sizes
Nov 10, · Im making hp N/A and i run an overkill system with # 10 line. and #8 return. i spent over bucks on my fuel system,and if i found out i didn't use big enough pump,line . *HP estimates are based on gasoline. Individual systems will vary based on fuel system design, regulator type, fuel cell location, launch G’s etc. ** Return line only needed if . Apr 06, · Using hp as an example, we'll show the fuel requirement for two engine efficiency combinations: (HP x BSFC = pounds of gasoline) hp x.5 BSFC = pounds of gasoline.
Login or Sign Up. Logging in Remember me. Log in. Forgot password or user name? Ideas, on fuel line size and returns???????? Previous template Next. Posts Latest Activity Photos. Page of 1. Filtered by:. March 25, , PM. Hello, My project c10 has the bed off. Tags: None. Re: Ideas, on fuel line size and returns???????? Comment Post Cancel. March 27, , PM. Aeromotives site has a lot of good info.
Just make sure to mount the pump lower than the tank, or use check valves in the system in order to keep the pump primed. March 28, , AM. I have no proof, but figuring HP'ish??? I think there is still enough room to make HP and supply adequate fuel. I'm using a stock Ford pump. March 28, , PM. April 8, , PM. June 25, , AM. My car from factory has an in-tank pump which I upgraded to a hp Walbro pump. One way is to add a pickup off the side close to the bottom of the tank so it minimises the risk of fuel starvation to the pump.
Also as mentioned, keep the new pickup away from the return as it will airate the fuel when dumping back in. The best way is to fit a surge tank Use it to feed the surge tank then run an EFI pump from that to your engine. The surge tank will also take the return line, that way you dont have to touch the original tank at all.
The 1st way that I mentioned can still suffer from starvation due to fuel surge if you run the tank low. The external surge tank method is a failsafe way to ensure uninterrupted fuel delivery for EFI. Hope this is of some help. Reason: Left out some information. All rights reserved. Yes No. OK Cancel.
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