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Old 10-10-2009, 08:12 PM
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Default FI Fuel Lines

I am finally installing the fuel lines for my LT1 in my 1981 Elky. I am running new FI hose from the engine to the fuel tank. Now I am told that that is dangerious. That no more than 6" of hose should be use, should be steel tubing or SS braided hose. If I properly install the hose so that it is not close to the exhaust, wouldn't it be ok?
Joe
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Old 10-11-2009, 04:32 AM
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You can get by with the fuel hose on the return side because of no pressure but the feed side runs more pressure than the regular fuel hose can stand.
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84 Elky with 455 Stage 2 Buick, Tremec TKO600 5 speed, 8.5 3:23 posi 98 Acura CL custom upholstered seats, Dakota Digital Instrumentation-

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Another 3 to 9 years should finish it. In year 7 and still working on it - no end in sight.
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Old 10-11-2009, 05:31 AM
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i assume your going with hose for ease of installation...
so id go with the braided hose...i did...steel is cheeper,,but a pita...

iv never seen a engine fire fed by a 50-60 psi pump,,,dont want to see one,, on my elky...
id find another place to save a little money/work...good luck...
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Old 10-11-2009, 05:25 PM
toms84ss toms84ss is offline
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The hose will take the pressure. But it will deteriorate over time. Unless you keep a real close eye on it I would go with steel tube or braided line to be safe. More work and $$ but worth it in the long run.
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Old 10-12-2009, 10:11 AM
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I agree, spent $322.00 today on SS hose and fittings, but the right thing to do.
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Old 10-12-2009, 01:44 PM
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Joe, If the correct fuel injection compatible hose is used there should be no more danger using the hose than using solid steel lines. If you look at the various high dollar after market kits most all provide high pressure fuel injection hoses for their pressure and return line. I have been running a complete TPI system in my 83 for close to four years with no problems. I do use AN fittings at all connections and inspect the hoses regularly. My fuel hose runs along the inside of the frame rail parallel to the original fuel line which also affords protection to both. Both solid and hose lines have advantages and disadvantages hose can deteriorate and be damaged if exposed to exahust heat and chaffing, hard lines can also suffer damage from chaffing and cracks due to vibrations and improper security. Hose is more flexible and easier to run. There are a lot of enthusiast who think the steel braided hose it the only way to go but based on my 45 years experience with aircraft, steel braided hose is great stuff when it comes to managing high pressure but you better make sure you know how to clamp it so it will not chaff anything or it will wear through in a heart beat. Once the steel braid is broken by a frame fail or other component chaffing against it the hose is shot and will leak in short order. Research for the right hose made for fuel injection use the right fittings run it where it is protected along the inside of the frame where you can still inspect it over time and you will be fine. Both Summit, Jegs, Russell sell very goo hose for fuel injection applications. Harald K.
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Old 10-12-2009, 03:22 PM
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Purchased Aeroquip hose and fittings (expensive) from Lane Automotive (local performance equipment distributor), but I appreciate the heads up on making sure that I support the hose correctly. This car/truck will strickly be a weekend and car show traveler, and has been a 2 year frame off project. I would be very unhappy if it caught fire. See vette_1989 in the gallery for a pictures of where we have been.
Joe
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