onefastrx7turbo

iTrader: (5)

OK, So I Ordered a 25 ft roll of "aircraft quality" .035 in. wall thickness -8 hard fuel line from Jeg's. But what before my wondering eyes should appear? a note on the label on the bag the line came in -Do Not use with high pressure fuel injection systems - I called their tech line, and he said that it was meant for use with low pressure carbureted fuel systems. I asked them if they carried high pressure hard lines, and they said they didnt. Only the braided line. 20ft of -8 braided line, $97.99 25 ft of -8 hard line, $23.99. I was planning on running around 50-60psi i would imagine. Everything connected to this feed line will be fittings, just like on aircraft. I was planning on flaring and usiong fittings for every hard line connection, along with braided line for use between rails and feed line. What do you guys think? should I return it? .035 of an inch is still pretty thick. I cant see it rupturing, but...what do I know? im lost on this one....any help is appreciated

Shamrock.James

you could always try presurising it and leaving it for a little while, maybe kick it a couple of times leave it for a couple of days and see if it does hold up....

duboisr

Garfinkle used 3/8 steel aircraft hard lines ( 2200 lbs test ) for the line from the pump bell connector to the fuel rails ( custom made fittings ) back to the fuel pressure regulator .The tubing cost about $ 1 per foot . and the bender cost about $ 50 . He is now making new lines to the rails with SS tubing ( $ 7 per foot ) because you can see them under the manifold and the SS will polish out . The air craft tubing was painted . Check the burst rate of your tubing . A day or two test will not tell you if it will hold up for the pressure cycling over the years use .

onefastrx7turbo

iTrader: (5)

duboisr,

I dont know if I can find the burst rate of the line or not? Where did garfinkle get his line from? Im planning on doing the exact same thing as him, custom line from the tank to the engine bay, then braided line from there to the rails, all with fittings. thanks for the info...


neil

duboisr

The aircraft tube came fron Nashville Rubber and Gasket , the stainless came from a hose and belt shop in Murfreesboro .With his set up there is only two short rubber hoses from the long lines to the engine with 4 clamps each . Braided could be used there also . The lines from the rails across the engine turn down to meet the rubber hoses . IF you look under the uim you can see the hard lines from the rails, but not the rubber hose on the side to the tank lines . The rubber hoses are about 6-8 inches long .I will tell him you are using braided to see if it may be a good idea for him ( to get rid of the short rubber hoses ) .If you wont more info I will give you his phone no. Several have called him to get directions for this . The total cost is way lower than using braided for the complete systrm with 100 joints to leak .Even after paying for the tube bender .

SPOautos

I bet the reason they dont suggest using it for high pressure is cause the ends arent flared and they dont want someone to just clamp a rubber line to it cause in that case under high pressure it would prob leak.

I know you said you plan on flaring it but I'm just saying thats prob why from the factory its not suggested to run with high pressure applications

STEPHEN

onefastrx7turbo

iTrader: (5)

SPO,

I was thinking of that same thing, like if someone was to just clamp on some hose and try and run 50-60psi, it might leak at the hose. but still, I'm still tempted to use it the more I think about it. I mean, its .035 inch thick, and im not running 3000psi through it. it should be ok right? if im wrong, it will be a self correcting mistake!!!

RoTaRyBoYz

both Jegs & summit carry the 1/4"-1/2" russell anodise blue or red hard line......i used the blue 3/8" & 1/2" hard line on my t2 & 20b conversions with no problems.....you will need a flare nut tool $15) to flare the end of the hard line to put the flare nut & sleeve on....you could even attach the braided line to the hard line with a AN adaptor...

RoTaRyBoYz

both Jegs & summit carry the 1/4"-1/2" russell anodise blue or red hard line......i used the blue 3/8" & 1/2" hard line on my t2 & 20b conversions with no problems.....you will need a flare nut tool $15) to flare the end of the hard line to put the flare nut & sleeve on....you could even attach the braided line to the hard line with a AN adaptor...

setzep

The line will be fine. I bet if you did a burst test it would go up to 3000 psi before it cracked. I run the same line you bought but 3/8"
I'm with SPO, no flare might make it leak because of the hose sliding off. With a flare, tube nut and a tube sleeve it won't leak unless you did a shitty job flaring it.

onefastrx7turbo

iTrader: (5)

thanks guys...im using it...ill practice flaring before i actually start tearing into the stuff for the car...ill post pics after i get it painted...