Fuel fittings: How to change to threaded - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*transient* · 07-17-2003, 02:19 PM

Ok, I'm sure I'm not the only one here who's fed up with having to slice their fuel lines every time they want to disconnect something. I'm planning on changing everything over to standardized threaded -AN style fittings. I thought this was going to be fairly easy, but I realized one thing. The gas tank has Barb fittings welded onto the tank itself. Am I going to have to have new lines welded onto the gas tank (and even worse, the fuel pump housing?) I know there are adapters out there, but it seems like kindof a cheezy way to go... . Anyone have any ideas??

icesoft · 07-18-2003, 10:50 PM

I'm looking to do the same thing, although I probably won't go as far as to replace the lines from the tank to the hardlines on the car.... You might be able to flare the ends of the barb fittings on the tank and use a flare to -AN adaptor or you could switch to a fuel cell

I only plan on taking that part of the car apart once to change to a high volume pump when I drop the turbo Z31 motor into my car.

Now in the engine compartment, that's a completely different story, there I plan on converting just about everything I can to silicone, braided line, or some other super long life, high pressure hose just so I don't have to d!ck around with it ever again...

You might be able to use a compression fitting and an -AN adaptor off of that too, just a thought.

Good luck,
Benjamin Jennings, MCP
'95 240SX Champagne Gold

*transient* · 07-19-2003, 09:45 AM

Hmm, that's a thought, but aren't the current lines made of galvanized steel? How well would that hold up? I'm actually replacing more than just the lines from the tank to the hard lines, I'm doing the hard lines as well, hehe. I've thought about going with a fuel cell, but it seems like it would be too much trouble to run a filler neck, plus I've already bought a Walbro fuel pump that goes in-tank.

icesoft · 07-19-2003, 05:16 PM

Well, I suppose the line is probably cheaper to buy than the fittings, if you were still using the stock hardline, you'd probably be looking at 10-15 ft of hose and like 10-14 fittings whereas by replacing the hardlines, your up to 30 ft of hose but only like 6 fittings or so...

If you're worried about splitting the end or something when you flare it, then use a compression fitting, they're probably cheaper and easier to deal with anyway...

Regards,
Benjamin Jennings, MCP
'95 240SX Champagne Gold

*transient* · 07-19-2003, 05:43 PM

Well, what I've decided (finally) to do, is use the barb adapters for now.

I'll connect those to the tank and the engine via small bits of rubber fuel hose. Later down the road, I'll fit braided line straight to the fuel rail and get a fuel cell installed by a local performance shop. Finally, I know what I'm going to do!!

Fibercus · 07-20-2003, 07:11 PM

That would be a sweet setup, post some pics when you get it done

*transient* · 07-20-2003, 08:57 PM

Will do

the head · 07-21-2003, 07:31 AM

another possibility is the GM fuel filter from late model performance cars both ends have threaded recepticals put a barb in one end and a an fitting in the other
or just get some weld on an fittings and weld to the barbs on the tank that is the cleanest way to go besides a fuel cell

07-17-2003, 02:19 PM	#1
transient Premium Member Join Date: Jun 2001 Location: Los Angeles, California Age: 41 Posts: 2,947 Trader Rating: (0) Feedback Score: 0 reviews	Fuel fittings: How to change to threaded Ok, I'm sure I'm not the only one here who's fed up with having to slice their fuel lines every time they want to disconnect something. I'm planning on changing everything over to standardized threaded -AN style fittings. I thought this was going to be fairly easy, but I realized one thing. The gas tank has Barb fittings welded onto the tank itself. Am I going to have to have new lines welded onto the gas tank (and even worse, the fuel pump housing?) I know there are adapters out there, but it seems like kindof a cheezy way to go... . Anyone have any ideas?? __________________ Learn everything you can, while you still have the chance.

07-19-2003, 09:45 AM	#3
transient Premium Member Join Date: Jun 2001 Location: Los Angeles, California Age: 41 Posts: 2,947 Trader Rating: (0) Feedback Score: 0 reviews	Hmm, that's a thought, but aren't the current lines made of galvanized steel? How well would that hold up? I'm actually replacing more than just the lines from the tank to the hard lines, I'm doing the hard lines as well, hehe. I've thought about going with a fuel cell, but it seems like it would be too much trouble to run a filler neck, plus I've already bought a Walbro fuel pump that goes in-tank. __________________ Learn everything you can, while you still have the chance.

07-19-2003, 05:43 PM	#5
transient Premium Member Join Date: Jun 2001 Location: Los Angeles, California Age: 41 Posts: 2,947 Trader Rating: (0) Feedback Score: 0 reviews	Well, what I've decided (finally) to do, is use the barb adapters for now. I'll connect those to the tank and the engine via small bits of rubber fuel hose. Later down the road, I'll fit braided line straight to the fuel rail and get a fuel cell installed by a local performance shop. Finally, I know what I'm going to do!! __________________ Learn everything you can, while you still have the chance.

07-20-2003, 08:57 PM	#7
transient Premium Member Join Date: Jun 2001 Location: Los Angeles, California Age: 41 Posts: 2,947 Trader Rating: (0) Feedback Score: 0 reviews	Will do __________________ Learn everything you can, while you still have the chance.

07-21-2003, 07:31 AM	#8
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	another possibility is the GM fuel filter from late model performance cars both ends have threaded recepticals put a barb in one end and a an fitting in the other or just get some weld on an fittings and weld to the barbs on the tank that is the cleanest way to go besides a fuel cell __________________ I never knew you could do that with an eggplant

07-18-2003, 10:50 PM	#2
icesoft Join Date: May 2003 Location: Lawrenceburg, IN Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	I'm looking to do the same thing, although I probably won't go as far as to replace the lines from the tank to the hardlines on the car.... You might be able to flare the ends of the barb fittings on the tank and use a flare to -AN adaptor or you could switch to a fuel cell I only plan on taking that part of the car apart once to change to a high volume pump when I drop the turbo Z31 motor into my car. Now in the engine compartment, that's a completely different story, there I plan on converting just about everything I can to silicone, braided line, or some other super long life, high pressure hose just so I don't have to d!ck around with it ever again... You might be able to use a compression fitting and an -AN adaptor off of that too, just a thought. Good luck, Benjamin Jennings, MCP '95 240SX Champagne Gold

07-19-2003, 05:16 PM	#4
icesoft Join Date: May 2003 Location: Lawrenceburg, IN Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	Well, I suppose the line is probably cheaper to buy than the fittings, if you were still using the stock hardline, you'd probably be looking at 10-15 ft of hose and like 10-14 fittings whereas by replacing the hardlines, your up to 30 ft of hose but only like 6 fittings or so... If you're worried about splitting the end or something when you flare it, then use a compression fitting, they're probably cheaper and easier to deal with anyway... Regards, Benjamin Jennings, MCP '95 240SX Champagne Gold

07-20-2003, 07:11 PM	#6
Fibercus BANNED Join Date: Jul 2001 Location: Canyon Country, CA Age: 44 Posts: 714 Trader Rating: (0) Feedback Score: 0 reviews	That would be a sweet setup, post some pics when you get it done