TBI lines to 3/8npt

[TagAllen]

Need to figure out how to go from the stock 95 TBI fuel lines to hoses that end with 3/8NPT for a pressure regulator with return provision. I do not want to cut the hard metal lines. I want to use adapters so I do not have fuel hose blowing off cut metal lines just held on by simple clamps. I want to use my stock in tank pump to run a carb is why I want to use a regulator. After the regulator to the carb its only 4-6 psi so I am not as concerned. Are there hoses already made for this?

 

[SAATR]

If the lines are M16x1.5 oring, which I think the supply line is, you'll want something like this:

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Then you can get something like this to attach to it

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And then your fuel line to a 3/8npt fitting. If you prefer crimped fittings, a hydraulic shop should be able to make a hose to spec.

 

[454cid]

What about cutting the hard line and flaring it?

 

[TagAllen]

will flaring it be enough to hold the pressure from a FI in tank pump?

So is the male end of the blue fitting 3/8 NPT? Or does it screw into the second fitting pictured?

 

[PlayingWithTBI]

will flaring it be enough to hold the pressure from a FI in tank pump?

With a return style regulator it'll only see what you set it for, or your 4 - 6 PSI.

 

[arrg]

You can use the fittings SAATR recommended on the stock supply line and the corresponding M14x1.5 o-ring fitting on the stock return line with a little bit of hose to and from the regulator, or you can cut the metal lines.

 

[Erik the Awful]

Flaring can be a little finicky to get right. The one saving grace of those GM proprietary fittings is they seal well and repeatably. I got the adapters because AN lines and hoses are very common and easy to use.

 

[TagAllen]

Would a dorman 800-78 work?

 

[SAATR]

will flaring it be enough to hold the pressure from a FI in tank pump?

So is the male end of the blue fitting 3/8 NPT? Or does it screw into the second fitting pictured?

The blue fitting is -6 JIC/AN. The barb fitting is female -6 JIC/AN to 3/8" hose barb. Attach a hose to the barb, and then a 3/8 barb/male 3/8 NPT fitting to attach the hose to the regulator.

 

[SAATR]

Would a dorman 800-78 work?

That fitting is for M16x1.5, which is too big. If you could find one for M14x1.5, it would work, though I think those fittings are designed for 3/8 nylon line which explains the extremely small barb on the hose side. I would much prefer something with a more aggressive barb or flare for better retention using rubber hose, like the fitting I pictured. I also like JIC fittings for their ease of disassembly and good quality connection, but that's personal preference.