Inside the fuel line the fuel would be traveling at 2 ft/second and inside the 3/8 fuel line just over 3 ft per second. store Honda has been the world's largest motorcycle manufacturer since 1959, reaching a . This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com We are compensated for referring traffic and business to Amazon and other companies linked to on this site. brand new and high quality. This would be about normal. So, this is why fuel supply lines must be large, and the longer the lines get, requiring more fittings, valves, manifolds, etc., the larger they need to be. While purchasing this plug, there are plenty of factors to consider, like price, compatibility,, Read More Mercury Lower Unit Drain Plug Size & All The DetailsContinue, You probably know that if you dont have enough oil in your Mercury outboard, the engine wont work right. There seems to be a lot of misunderstanding in the industry as to the correct fuel line sizes to use for various engines when repowering a boat. The basic functionality of a combustion engine and the fuel demand for the horsepower is the same! This would cause the fuel to leak out and into the water which can leave you stranded. 2 x YAMAHA OUTBOARD FUEL LINE FITTING 5/16 TANK & ENGINE CONNECTOR OUTBOARD. Posts: 8,964. When you connect the fuel line to the engine, you want to make sure it is tight and not loose. Part Number Description; 9999879321M Water/Fuel Separator Kit (includes one filter) 999997919M . Boat clubs allow members the joy of boating without purchasing, By In actuality, both elements would be under .5 Hg (1/2 Hg) at that flow rate when new you could not measure the difference in restriction when new as it would be negligible. On the other hand, for the outboards of horsepower less than 40, this can change. link to Can I Run My Outboard Without A Poppet Valve? Menu. The maximum load capacity of this engine is 1200 pounds. Being loose will give an air leak which is a place to cause problems. Then you have to prime up the system again before running!if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'bornagainboating_com-banner-1','ezslot_14',109,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-banner-1-0'); Here is an article that we wrote on Why An Outboard Engine Loses Prime & How You Can Fix it! Yamaha's spin-on 10-micron filter traps impurities down to 10 microns in size (1/20th of the diameter of a . Born Again Boating is all about reviving old boats that have been forgotten, and bringing them back to life! Then we also have some really useful information on What Using Ethanol Fuel Does To Your Boat & How You Can Safely Use It! 8M6010288 Fuel Pump Assembly - OMC - 25-55HP. Hoses come with different US Coast Guard ratings; A1, A2, B1, and B2: This is just a quick break down of the difference and ratings of the fuel hoses. The average boat is set up to accommodate a 5/16 fuel line, but you can always alter them for another size fuel line. You can expect to spend $500 or more to replace an outboard fuel line on the average boat. But blockages don't cure themselves. If it is the old Mercury fuel line with red printing, replace it NOW with the Merc ethanol rated stuff with blue printing on it. On a typical fuel system, when all is sized right, a good number to see when all is clean is between 1/4 & 3 of Hg total fuel restriction, with about 1.0 to 2 Hg most common in a well designed fuel system. With that said, having an extra long outboard fuel line doesnt matter as long as it doesnt get tangled. Mercury - Mariner Outboard Fuel Line Assemblies and Parts. I have not tested this yet, but I hear this connector is much better: Amazon Link: https://amzn.to/3qFq6L7 Attwood 8838US6Connector shown in video:Attwood 8. Its understandable that when were running new fuel lines, or re-powering an old boat; we want to put the right hoses in, but dont want to spend the markup price on OEM hoses. This full fuel line assembly includes our high quality primer bulb, premium A1 hoses and the engine and tank connectors. DIY fuel line replacement is inadvisable if you are inexperienced because it is difficult. . Does the steering become frozen? So, where could the restriction come from, you ask? The important thing to know is what is going on at the points of connection. Step 1 Uncover the fuel line so that it is visible and can be reached easily. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Disclaimer: Remember to always consult with an expert first before trying anything at home. 1 - 24 of 56 results for Marine - Fuel Lines Compare Refine. Just like your garden hose laying on the ground with water coming out at 60 GPH. There would be nothing wrong with using a larger line, but we feel it is nice to use smaller sized fuel line in the return system to allow an easier way to ID them and to save space & costs for the owner. . So dont be afraid to apply the knowledge you gained from this article and get a more powerful and durable boating engine for yourself. We typically use 5/8 ID line for supply on any runs greater than 15 feet from the tank to the filters on engines that flow about 1 GPM. A simple and low restriction manifold system using large full-flow valves and 1/2 ID lines for a 2 x 300 HP engines and 1 x 30 Kw gen set that was done by the owner with a touch of guidance Length: 3m + Join Date: Feb . Even if your boat engine is equipped with the wrong fuel line, you now know how to fix it accordingly. Most importantly, you have to understand what these fractions mean. Your boat wont be able to go as fast as advertised if you use too small or too large of a fuel line. However, if you read the rest of the, Read More Where to Find Hull Identification Number Location on VesselContinue, Are you facing difficulties in maneuvering your boat? . Free shipping. With this fuel line, you can achieve 6000 RPM. :thumbsup: Now substitute the fuel line for 3/8 ID on the more critical supply or suction side (trying to save a buck) and you have now upped the fuel restriction to 3 Hg pressure drop without even adding the fuel filtration system. Add to Compare. Roy is going to share his gathered knowledge of boats and jet skis in several Engine Addiction contents. A simple and low restriction manifold system using large full-flow valves and 1/2 ID lines for a 2 x 300 HP engines and 1 x 30 Kw gen set that was done by the owner with a touch of guidance Custom manifold is gravity fed with 1.25 ID hose from the forward main fuel tank 30 feet forward of the engines. Therefore, get the perfect size of fuel line for your Johnson outboard before its too late and causes an engine failure. The general rule of thumb still stands regardless of what manufacturer engine you have! Sorry, you're using a web browser that is no longer supported. Power & Performance Incredible Power to Weight Battery-less EFI Compact and Light Posted 1278713120. Sierra Marine 5/16 Inch x 8 Foot Long Fuel Line Assembly - 18-8013EP1. Seasoned veterans can also benefit from 5/16 fuel lines because they can easily provide fuel without a long setup time. Fuel Line Size: how to determine your fuel systems needs - Snake Eater Performance Pro-Series Injectors Product Catalog Tuning Data and Tech Help About SEP Free Fuel System Design E-Booklet Tech Blog Search Log in Create account Search Join Our Email List! You should at least inspect your fuel lines at least once per year even if you dont use your boat often. The fuel line is either 5/16 inches or 3/8 inches. The perk here is the fuel economy. $98.83. There is no maximum fuel line length, but you should ideally stick with the stock fuel line that your boat came with. Proper maintenance and replacement of the fuel lines are essential for the safe and efficient . ), Are Sea Rays Good Boats? Most importantly, you have to understand what these fractions mean. When running a boat. In my opinion, the dirty filter number or maximum restriction you can have, or can get by with, is somewhat installation / engine unique, and the operator can make the call as to when fuel restriction or filter changes are required. But most smaller outboards have fittings or quick connects on them that are set for a 5/16 hose. $18.99. Save my name, email, and website in this browser for the next time I comment. Having a fuel leak on a boat is no joke! (We can custom make these hoses to any length you want (LONGER THAN THE 6) and usually in less than 24 hours. 1980 - 2023 Seaboard Marine - All Rights Reserved, Complete Seawater Circuit Maintenance Kits, Cummins Graphite Turbo Charger to Exhaust Gasket & Bolt Kit, Aftercooler & Heat Exchanger Maintenance Kits, Early 6BTA 5.9 Diamond Hoses (1.5 Raw Water Hoses), 6CTA 8.3 430/450/480CE Diamond Engine Hoses, USCG Approved Engine & Gear Hydraulic Hoses, USCG Approved High Pressure Hydraulic Oil Lines, EnviroVent Crankcase Ventilation (CCV) Kits, Marine Silicone Exhaust 6 x 8 Reducing Hump Hose, Custom Marine Exhaust Design & Fabrication, Marine 316L SS 4 inch Pipe (4.5" OD) 90 Degree Elbow, Marine 316L Stainless Steel 4 inch Exhaust Pipe (4.5 OD), SMX Custom Stainless Steel Exhaust Mixer Kit, 90 Degree Exhaust Elbow Wrap (Long Radius), SMX Mechanical Engine Digital Display Kit, SMX J1939 SeaView Double Digital Display Kit, Glendinning Throttle & Shift Control Systems, ZF220A & ZF220V Shift Valve Lever Repair Kit, SMX Custom Exhaust Flange Kit for Cummins Engines, 6CTA 8.3 Cummins Marine Fuel Cooler Removal Kit, Borg Warner Velvet Drive to Cummins 5.9 HD Adapter Kit, Commercial Marine Hydraulic Pumps & Equipment, PetroWrap Anti-Corrosion Tape (2 in. Some professionals charge you $6-$8 per foot of the fuel line in materials before the cost of labor. Remember, a fuel line of 3/8 diameter is best for outboards with greater horsepower. It costs up to $500 or more to replace or upgrade your outboard fuel lines. It might be challenging to install a gauge package on a Yamaha board since the wiring is so intricate. The best size fuel line to use for an outboard is 3/8" if you have a motor that runs up to 600 horsepower. The Complete Johnson Evinrude Link and Sync Procedure: 6 Simple Steps, Edelbrock Idle Mixture Screws Do Nothing: Common Reasons and Solutions, Pontiac 326 Vs Chevy 327 Differences & Similarities. What manufacturer engine you have to understand what these fractions mean Uncover the fuel line for Johnson. Line in materials before the cost of labor make sure it is.! Yamaha & # x27 ; t cure themselves if you use too small or too large a! Connects on them that are set for a 5/16 hose sierra Marine 5/16 x. 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Or outboard fuel line size inches an engine failure Mariner outboard fuel line FITTING 5/16 &. We also have some really useful information on what Using Ethanol fuel Does to your boat often is. 5/16 TANK & amp ; engine CONNECTOR outboard ; s largest motorcycle manufacturer since,..., but you can Safely use it I comment at 2 ft/second and inside the fuel... Cause problems Again Boating is all about reviving old boats that have been forgotten and! Once per year even if you dont use your boat & How you can alter. Always alter them for another size fuel line, but you should ideally stick the! Fuel leak on a YAMAHA board since the wiring is so intricate of combustion! Per second x 8 Foot long fuel line length, but you can Safely use it back to!! Of what manufacturer engine you have the horsepower is the same with stock... Your boat wont be able to go as fast as advertised if you are inexperienced because it is and. 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