desoto1939 Posted October 9, 2016 Report Share Posted October 9, 2016 Here is a question for the group. My fuel line is 5/16 OD. I am having an issue trying to get a 90 degree inverted flare fitting with the 5/16 tapered fitting on both angles. For some unknown reason these are not being stocked by any of the major hydraulics and fitting suppliers. I even walked Hershey last week and could not find any fitting. They do have 1/4 and 3/8 fitting with the 90 degree flare inverted at NAPA. So, the question that I am asking, Would there be any major fuel issue if I changed the 5/16 OD to a 3/8 OD line I am increasing the ID approx. maybe a 1/16. Would there be any issue with to much fuel coming from the pump to the carb in a volume issue. I would not think so because the pump only puts out 3-5 lbs and the flaot also controls the amount of gas going into the carb bowl. Any input would be appreciated. When I have seen the 5/16 inverted flared 90 Degree fitting listed they are going for $13-15 each and if they are getting harder to find then lets go with a more common fitting and line since they are available and also cheaper. All 25 cents worth of input if fine by me. Rich Hartung Desoto1939@aol.com Cell 484-431-8157 Quote Link to comment Share on other sites More sharing options...
casper50 Posted October 9, 2016 Report Share Posted October 9, 2016 I had a similar problem when I installed my new fuel tank. They said it was exactly the same as stock. 1/2" wider front to back and the fuel line fitting needed a longer male fitting to fit. 5/16" fuel line. Everyone stocked the 1/4 long male but I had to pay $15 to order a 5/16ths one. How many times do you think you will need to change fitting or replace the fuel line? Seems to me it would be much cheaper to buy the 5/16ths fitting. Good luck. Quote Link to comment Share on other sites More sharing options...
RobertKB Posted October 9, 2016 Report Share Posted October 9, 2016 3 hours ago, casper50 said: I had a similar problem when I installed my new fuel tank. They said it was exactly the same as stock. 1/2" wider front to back and the fuel line fitting needed a longer male fitting to fit. 5/16" fuel line. Everyone stocked the 1/4 long male but I had to pay $15 to order a 5/16ths one. How many times do you think you will need to change fitting or replace the fuel line? Seems to me it would be much cheaper to buy the 5/16ths fitting. Good luck. Ditto. Quote Link to comment Share on other sites More sharing options...
Dave72dt Posted October 10, 2016 Report Share Posted October 10, 2016 I searched Edelmann's catalog and couldn't find a 90degree fitting. I did find a tee fitting with the inverted on all three and they do make a plug for the inverted as well. It may be an ugly solution but it should work. Quote Link to comment Share on other sites More sharing options...
Los_Control Posted October 10, 2016 Report Share Posted October 10, 2016 That sounds like a acceptable reason to run a dual carb setup 1 Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted October 10, 2016 Report Share Posted October 10, 2016 Have you looked for any banjo fittings? I used these on my master cylinder. Quote Link to comment Share on other sites More sharing options...
squirebill Posted October 10, 2016 Report Share Posted October 10, 2016 To answer your question about fuel line size: if the outlet port size of the pump and the inlet port size at the carb remain the same there should be no difference in operation. The only difference might be if you were to completely drain the fuel line it may take longer for the line to refill if you had a larger size line. As an extreme example lets assume the ports are 3/8 inch diameter. If you were to increase the size of the tube to say 1 inch pipe and the output from the pump was 1 cubic inch per stroke then it would take more pump strokes to initially fill the pipe but once it was filled (since liquids are not compressible) one pump stroke input would result in one pump stroke output. 1 Quote Link to comment Share on other sites More sharing options...
desoto1939 Posted October 10, 2016 Author Report Share Posted October 10, 2016 Good News. I just found a Hydraulics supply warehouse in Philadelphia that stocks these 90 degree 5/16 inverted flare brass fittings. The cost was $3.00 each so I ordered several of them to be shipped to my home. I would like to thank everyone for their input on this topic. The internet is great for finding stuff like these items. It surprise's me that even NAPA does not carry these fitting and this is a standard brake and fuel line size. I will update everyone on the project after getting the new fuel line installed .Rich Hartung Desoto1939@aol.com Quote Link to comment Share on other sites More sharing options...
Dave72dt Posted October 11, 2016 Report Share Posted October 11, 2016 Common enough to have one inverted and the other end of the 90 degree in a standard pipe thread. I'd think it more common to just bend the 90 in line itself. Quote Link to comment Share on other sites More sharing options...
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