Fuel line material?

[mojokim]

I am installing a new fuel pump over the winter and plan to replace my fuel lines as a preventative item. I know that rubber lines should not be used from the fuel pump to carb. Are braided stainless lines ok to use or does it have to be rigid steel line? Thanks.

 

[mojokim]

Re: Fuel line material?

Anybody?

 

[airman]

Re: Fuel line material?

I can't comment on the legal side of using braided line but it's probably safe. On the other hand, you can buy solid stainless tube (brake line) at any auto parts store for about $8 in any length you need, complete with a spring wrapping to help bend it. It's amazingly easy to bend and it's what I would recommend using.

 

[akriverrat]

Re: Fuel line material?

i keep reading rubber is not legal from pump to carb. i have read the cg rules repeatedly and can't find that anywhere. i know at least one oem sells marinized engines with uscg a-1 hose from carb to pump and has for at least 12 years. can someone cite the statute that requires metal line from carb to pump?

 

[Ryoken]

Re: Fuel line material?

maybe someone who knows the coastguard safety rules will chime in with the correct answer.<br /><br />but honestly, i don't like to see it on stock applications. i have a customer that ran it on his B.B Crusaders in his Silverton aftcab and it seems to be holding up ok. i just don't like it, i like to see stock parts used. unless of course it's a raceboat application.<br /><br />i run all steelbraided on my Pro street Chevelle but i wouldn't run it on a stock Sea Ray, etc...<br /><br />hardline is cheap and easy. just get a bender and flare tool and take your time.

 

[cobra 3.0]

Re: Fuel line material?

Any auto shop has gas line material.

 

[boatingfool]

Re: Fuel line material?

I have seen the braided Rubber lines used between pump & carb.<br /><br />Thats what you have to do if you add an inline filter between the carb & pump.<br /><br />Is that illegal??

 

[Ryoken]

Re: Fuel line material?

stock chrysler applications have an inline filter thats hardlined from pump to carb. not all such filters are a barbed setup. heck, just about every auto filter these days are flare setups...<br /><br />i'd much prefer a good Racor or spin on filter prior to the pump than an inline after. besides the fact most carbs have a filter in the inlet...

 

[seahorse5]

Re: Fuel line material?

According to Federal Regulations, you have to use USCG Type A1 fire resistant fuel line in a pressure application from the fuel pump to the carb and the fittings have to have a certain interference fit and the clamps have to withstand the 2 1/2 minute fire test. No spring tension clamps. This is if you do not use an approved metal line. If you adding an electric pump, there are a lot more regulations that have to be adhered to.<br /><br />You will find all of these regulations in Title 33, Part 183, subpart J in the Code of Federal Regulations.

 

[Trent]

Re: Fuel line material?

PART 183--BOATS AND ASSOCIATED EQUIPMENT--Table of Contents<br /> <br /> Subpart J--Fuel Systems<br /> <br />Sec. 183.558 Hoses and connections.<br /><br /> (a) Each hose used between the fuel pump and the carburetor must be <br />USCG Type A1'' hose.<br /> (b) Each hose used--<br /> (1) For a vent line or fill line must be:<br /> (i) USCG Type A1'' or USCG Type A2''; or<br /> (ii) USCG Type B1'' or USCG Type B2'' if no more than five <br />ounces of fuel is discharged in 2\1/2\ minutes when:<br /> (A) The hose is severed at the point where maximum drainage of fuel <br />would occur,<br /> (B) The boat is in its static floating position, and<br /> (C) The fuel system is filled to the capacity market on the tank <br />label under Sec. 183.514(b)(3).<br /> (2) From the fuel tank to the fuel inlet connection on the engine <br />must be:<br /> (i) USCG Type A1''; or<br /> (ii) USCG Type B1'' if no more than five ounces of fuel is <br />discharged in 2\1/2\ minutes when:<br /> (A) The hose is severed at the point where maximum drainage of fuel <br />would occur,<br /> (B) The boat is in its static floating position, and<br /> (C) The fuel system is filled to the capacity marked on the tank <br />label under Sec. 183.514(b)(3).<br /> (c) Each hose must be secured by:<br /> (1) A swaged sleeve;<br /> (2) A sleeve and threaded insert; or<br /> (3) A hose clamp.<br /> (d) The inside diameter of a hose must not exceed the actual minor <br />outside diameter of the connecting spud, pipe, or fitting by more than <br />the distance shown in Table 8.<br /><br />[[Page 831]]<br /><br /> Table 8<br />If minor outside diameter of the The inside diameter of the<br /> connecting spud, pipe, or fitting is-- hose must not exceed the<br /> minor outside diameter of<br /> the connecting spud, pipe,<br /> or hose fitting by more<br /> than the following<br /> distance:<br />Less than \3/8\ in........................ 0.020 in.<br />\3/8\ in. to 1 in......................... 0.035 in.<br />Greater than 1 in......................... 0.065 in.

 

[seahorse5]

Re: Fuel line material?

That's good, Trent,<br /><br />Here is the part that describes the conditions a marine fuel hose has to meet.<br /><br />PART 183--BOATS AND ASSOCIATED EQUIPMENT--Table of Contents<br /> <br /> Subpart J--Fuel Systems<br /> <br />Sec. 183.540 Hoses: Standards and markings.<br /><br /> (a) USCG Type A1'' hose means hose that meets the performance <br />requirements of:<br /> (1) SAE Standard J1527DEC85, Class 1 and the fire test in <br />Sec. 183.590; or<br /> (2) Underwriters' Laboratories, Inc. (UL) Standard 1114.<br /> (b) USCG Type A2'' hose means hose that meets the performance <br />requirements of SAE Standard J1527DEC85, Class 2 and the fire test in <br />Sec. 183.590;<br /> (c) USCG Type B1'' hose means hose that meets the performance <br />requirements of SAE Standard J1527DEC85, Class 1.<br /> (d) USCG Type B2'' hose means hose that meets the performance <br />requirements of SAE Standard J1527DEC85, Class 2.<br /> Note: SAE Class 1 hose has a permeation rating of 100 grams or less <br />fuel loss per square meter of interior surface in 24 hours.<br /><br /> SAE Class 2 hose has a permeation rating of 300 grams or less fuel <br />loss per square meter of interior surface in 24 hours.<br /> (e) Each USCG Type A1,'' USCG Type A2,'' USCG Type B1,'' and <br />USCG Type B2'' hose must be identified by the manufacturer by a <br />marking on the hose.<br /> (f) Each marking must contain the following information in English:<br /> (1) The statement USCG TYPE (insert A1 or A2 or B1 or B2).''<br /> (2) The year in which the hose was manufactured.<br /> (3) The manufacturer's name or registered trademark.<br /> (g) Each character must be block capital letters and numerals that <br />are at least one eighth-inch high.<br /> (h) Each marking must be permanent, legible, and on the outside of <br />the hose at intervals of 12 inches or less.<br /><br />[CGD 85-098, 52 FR 19728, May 27, 1987]

 

[Trent]

Re: Fuel line material?