pjo046 Posted February 21, 2005 Share Posted February 21, 2005 I am going to get earls fittings and hoses for my engine. I have 550cc injectors, a jsk fuel rail, aeromotive fuel pressure regulator, tec 3, T3/T04B. Is 6-AN lines big enough do you think? What size line and fittings should I use for the oil-supply to the turbo? Quote Link to comment Share on other sites More sharing options...
Clifton Posted February 21, 2005 Share Posted February 21, 2005 -6 Plenty for 550's. I am still using the stock 5/16" fuel line. I have checked the pressure at WOT at it does not drop. I am maxing out 8 450cc injectors so I'm using quite a bit of fuel. Quote Link to comment Share on other sites More sharing options...
slownrusty Posted February 21, 2005 Share Posted February 21, 2005 Wow -6 is huge for fuel on a street car anyway. Yasin Quote Link to comment Share on other sites More sharing options...
Clifton Posted February 21, 2005 Share Posted February 21, 2005 It's only 3/8". 1/16" larger than stock. Quote Link to comment Share on other sites More sharing options...
akeizm Posted February 22, 2005 Share Posted February 22, 2005 Not to hijack but what does the 6-AN and all those numbers mean? I got a turbo from the us and I need oil lines but it says 4-AN lines, I'm in metric Australia so I have no clue on your crazy measurements. But stock fuel lines will flow fine. Quote Link to comment Share on other sites More sharing options...
fastzcars Posted February 22, 2005 Share Posted February 22, 2005 akeizm. The -6 AN was developed by the military to standardize the fittings that were used in there aircraft. AN meaning Army/Navy. The dash number is the size of the I.D. of the hose in 1/16 inch increments. So a -6 is 6/16 of an inch or 3/8". -4 is 4/16 and so on. Hope that helps. Back to the original question, I think a -6 should be O.K. for fuel injection since your running higher pressures than for a carb setup. Quote Link to comment Share on other sites More sharing options...
Guest DirtyDingoMoto Posted August 14, 2007 Share Posted August 14, 2007 Just purchased 3/8 stainless CNC bent fuel lines for my 240Z. Fit perfect. Bought from http://newoldstockmotorsports.com. Quote Link to comment Share on other sites More sharing options...
Bob_H Posted August 15, 2007 Share Posted August 15, 2007 Just purchased 3/8 stainless CNC bent fuel lines for my 240Z. Fit perfect. Bought from http://newoldstockmotorsports.com. Where do they route? I.E. where do they start and end? I'm very interested as I am currently running AL lines and would like something stronger,(currently -6, need -8 for the end HP requirements down the road). Oh yea, how much were they? Any pictures? -Bob Quote Link to comment Share on other sites More sharing options...
johnc Posted August 15, 2007 Share Posted August 15, 2007 The dash number is the size of the I.D. of the hose in 1/16 inch increments. Actually, no. The dash number indicates that the hose flows the same as a metal tube with an OD measured in 16ths of an inch. So a -6 hose flows the same as a 3/8" metal tube. Remember, in the 1930s when the AN system came out they were replacing metal lines and needed an equivilancy formula. Quote Link to comment Share on other sites More sharing options...
Guest DirtyDingoMoto Posted August 15, 2007 Share Posted August 15, 2007 They routed in the factory location. Look just like factory except they are 3/8 and stainless. Quote Link to comment Share on other sites More sharing options...
Tony D Posted August 15, 2007 Share Posted August 15, 2007 John C is correct, it is a tubing designation with equivalency for flexible hoses. A quick trip through NAVAIR 1-1A-8, or USAFTO 1-1A-15 will tell you all you ever wanted to know about this kind of specification. It will make your head spin! Great toilet reading as an Aircraft Apprentice! LOL Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted August 23, 2007 Share Posted August 23, 2007 I've used -8 feed and -6 return on a lot of turbo cars running north of 600 whp. For the aussie, this same system aught to be in use down there as well. I wouldn't trust the stock feed line for much beyond 400 crank hp but that's me. In the end, I'd end up removing the stock return line and using the stock feed as the return and running a new -8 to feed the rail. You never know about fuel pressure unless you have it measured right before the return line. I still wouldn't trust it. Fuel is life on a turbo car. Also, Earls is a little funky. Don't try to mix and match Earls with Aeroquip, Russel, Jeg's, etc. It doesn't work. The actual flare fitting section is fine, but the ends wherein they screw over the braided line is slightly different in size. Quote Link to comment Share on other sites More sharing options...
WEBEZEEed Posted August 25, 2007 Share Posted August 25, 2007 Tubing is measured on the O.D. ( steel,nylon,poly,etc.) Hoses, almost all.... there are some exceptions.... are measured on the I.D. and normally measured in 116 increments. Tubing has many different wall thicknesses which reduces I.D. dimensions and in turn flow dependent on what the wall thickness is.So a #6 hose will out flow a #6 tube (both are termed as 3|8 inch) Akeizm, go to a Hydraulic hosefitting shop and inquire about JIC fittings....(Joint Industrial Council) they are the same as AN. Both seal on a 37 deg. seat. Also the threads are the same pitch. Hope this helps. Quote Link to comment Share on other sites More sharing options...
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