Hose Barb Terminating Fuel Lines - Maxima Forums



3rd Generation Maxima (1989-1994) Learn more about the 3rd Generation Maxima here.

Hose Barb Terminating Fuel Lines

Reply
 
 
 
Thread Tools Search this Thread
Old 07-02-2009, 08:42 PM   #1
Banned
Thread Starter
 
1993-VG30E-GXE's Avatar
 
Join Date: Apr 2008
Location: Ontario, Canada
Posts: 1,159
Hose Barb Terminating Fuel Lines

Does anyone know how (is there a tool) to make those hose barb ends of the metal pipe - the bulge in the pipe, exactly like the fuel pipes that go under the car and end up down below hear the steering rack boot at the bottom of the firewall, then our hose connects from that to our fuel filter.

The fuel filter also has the bulges top and bottom.

When I replace the fuel pipes underneath the car, some guy told me I don't even need those bulges, I can just clamp a hose to the pipe. I'm concerned though it could slip off from vibration and movement.
1993-VG30E-GXE is offline   Reply With Quote
Old 07-02-2009, 08:57 PM   #2
Senior Member
iTrader: (2)
 
Join Date: Oct 2000
Posts: 2,166
Sure is sold in most hardware stores. I'm at a lost for the name of it right now, but I remember it was less then 10 bucks.
infinitiblast is offline   Reply With Quote
Old 07-02-2009, 09:16 PM   #3
No more Maximas...
iTrader: (26)
 
pmohr's Avatar
 
Join Date: Jul 2005
Location: Clinton, TN
Posts: 14,331
To make the barbs or just to make the hump in the end of the pipe? Very big difference.

I'm sure you could find a bead roller for 5/16" tube somewhere.
pmohr is offline   Reply With Quote
Old 07-02-2009, 09:29 PM   #4
Banned
Thread Starter
 
1993-VG30E-GXE's Avatar
 
Join Date: Apr 2008
Location: Ontario, Canada
Posts: 1,159
Actually, maybe you guys or anyone that did it, can tell me what I need to do on the ends. I thought the word barb meant that end of the pipe with the bulge in it. There's 3 fuel pipes in total. I beleive they are all 5/16".

Do I make 1 hump on each end of the pipes...and the end at the fuel tank, does it basically connect to a piece of fuel injector hose that go straight into the fuel pump? This is the photo in the FSM but haven't seen it in real life yet. I'll need 6 fuel injector hose clamps, 6 humps total at ends of each pipe (3) right?

If anyone has the measurements please post them.
1993-VG30E-GXE is offline   Reply With Quote
Old 07-02-2009, 09:40 PM   #5
No more Maximas...
iTrader: (26)
 
pmohr's Avatar
 
Join Date: Jul 2005
Location: Clinton, TN
Posts: 14,331
Quote:
Originally Posted by 1993-VG30E-GXE View Post
Actually, maybe you guys or anyone that did it, can tell me what I need to do on the ends. I thought the word barb meant that end of the pipe with the bulge in it. There's 3 fuel pipes in total. I beleive they are all 5/16".

Do I made 1 hump on each end of the pipes...and the end at the fuel tank, does it basically connect to a piece of fuel injector hose that go straight into the fuel pump? This is the photo in the FSM but haven't seen it in real life yet. I'll need 6 fuel injector hose clamps, 6 humps total at ends of each pipe (3) right?

If anyone has the measurements please post them.
They should indeed all be 5/16" or 8mm (close enough to be interchangeable), IIRC every Nissan I've ever touched has those size fuel lines.

Well a barb is this (obviously ignore the threads on the right):


The name is pretty intuitive.

Fuel lines generally have a bead rolled into the end, such as this:


Which is what you're referring to.

Looking at FAST (with an image from Courtesy), it does look like there are two fuel hoses coupling the lines to the nipples on the pump assembly:


If you can't find anything to roll a bead in the pipe with, you could always rent/buy a flaring kit for brake lines; when you flare the end, it produces a pretty well defined 'hump' that would serve an identical purpose. Not sure how the ID is affected by that at the flaring site, though.

If you've got some free time and like to construct things, you could try something like this: http://forums.turbobricks.com/showthread.php?t=58790

I know there's an extremely simple answer that I'm overlooking, I tend to do that sometimes.
pmohr is offline   Reply With Quote
Old 07-03-2009, 01:19 AM   #6
Banned
Thread Starter
 
1993-VG30E-GXE's Avatar
 
Join Date: Apr 2008
Location: Ontario, Canada
Posts: 1,159
Thanks buds this helps alot.

Fuel Spill Question:

After I've released fuel pressure, if there's still fuel in the tank, when I go to remove the send & return pipes from the hoses connecting to the Fuel Gauge Sender Unit, will fuel start spewing out like a syphoning action, and not stop until I plug it with something or the tank ultimately empties?

Last edited by 1993-VG30E-GXE; 07-03-2009 at 01:27 AM.
1993-VG30E-GXE is offline   Reply With Quote
Old 07-03-2009, 04:35 PM   #7
mod or sell?
iTrader: (30)
 
internetautomar's Avatar
 
Join Date: Sep 2003
Location: Skokie (look it up)
Posts: 19,755
Quote:
Originally Posted by infinitiblast View Post
Sure is sold in most hardware stores. I'm at a lost for the name of it right now, but I remember it was less then 10 bucks.
a flaring tool?
internetautomar is offline   Reply With Quote
Old 07-03-2009, 07:57 PM   #8
Senior Member
iTrader: (1)
 
Join Date: Apr 2001
Location: Minnesota
Posts: 443
The flaring tool, for brake lines, I've used will produce a "funnel" shape on the tube end. Must be a tool for the "bulge".
Curt Deiner is offline   Reply With Quote
Old 07-04-2009, 01:37 AM   #9
Banned
Thread Starter
 
1993-VG30E-GXE's Avatar
 
Join Date: Apr 2008
Location: Ontario, Canada
Posts: 1,159
Went to the store and bought the SAE 45 flare tool kit and the line bender tool. There is a tool to do the bulge but it's over 900 bucks.

The bulge i'm talking about is not the bulge in Pmors photo. It's the 2 bulges found on your fuel filter, as well as end of injector rail send & receive pipe. The purpose of the bulge I beleive is to position the fuel injector clamp next to it, to give an even better seal or to possibly prevent the hose from slipping off the pipe (once the clamp is tightened down it may be difficult to pull hose off)if it were to move.

I don't think i'm going to follow the advice of one of my automotive buddy, he claims just cut the pipe and use the injector clamp and forget about the bulge. Guy at the store recommended use your OEM bulges and cut the pipe back from that maybe a foot, then use unions or something to join the new pipe. I personally don't like this idea because your adding un-necessary joints...but we'll see.

Here's the example of the tool. And that is one damn expensive tool just to make a bulge, out of my budget. ...............Pmor, the makeshift way is impossible with pipe this tiny inner diameter - sure with a huge pipe like the one in your photo, but imagine trying to do that within a fuel pipe.

www.vansantent.com/Catalog/2009/Bead_Form.pdf

Last edited by 1993-VG30E-GXE; 07-04-2009 at 01:52 AM.
1993-VG30E-GXE is offline   Reply With Quote
Old 07-04-2009, 09:43 AM   #10
No more Maximas...
iTrader: (26)
 
pmohr's Avatar
 
Join Date: Jul 2005
Location: Clinton, TN
Posts: 14,331
Quote:
Originally Posted by 1993-VG30E-GXE View Post
The bulge i'm talking about is not the bulge in Pmors photo. It's the 2 bulges found on your fuel filter, as well as end of injector rail send & receive pipe.
You mean like the second picture in my post

Fuel lines have the 'bead' around the end of the pipe to keep the hose from slipping off.

FWIW you could always just take some needle nose pliers and bend the edge of the tube out a little (smooth out any burrs), that would work the same.
pmohr is offline   Reply With Quote
Old 07-04-2009, 09:01 PM   #11
mod or sell?
iTrader: (30)
 
internetautomar's Avatar
 
Join Date: Sep 2003
Location: Skokie (look it up)
Posts: 19,755
Quote:
Originally Posted by Curt Deiner View Post
The flaring tool, for brake lines, I've used will produce a "funnel" shape on the tube end. Must be a tool for the "bulge".
I was thinking bubble flare.
internetautomar is offline   Reply With Quote
Old 07-04-2009, 11:44 PM   #12
Junior Member
 
Join Date: Oct 2002
Posts: 87
I think a double flare tool can make a bubble flare if you stop before the last step of the double flaring process.
jakeru is offline   Reply With Quote
Old 07-04-2009, 11:52 PM   #13
Junior Member
 
Join Date: Oct 2002
Posts: 87
Ahh... I just learned that a "push connect flare tool" is made just for this job.


Costs a lot more than a double (/bubble) flare tool though. Ones I found with a quick google search were running ~$200.

http://www.inlinetube.com/Straight%20Length/tools.htm
jakeru is offline   Reply With Quote
Old 07-05-2009, 01:50 PM   #14
Senior Member
 
Join Date: Jan 2006
Location: Massachusetts
Posts: 162
That hydraulic tool is nice but damn is it expensive!
nitrous360 is offline   Reply With Quote
Old 07-05-2009, 02:08 PM   #15
Banned
Thread Starter
 
1993-VG30E-GXE's Avatar
 
Join Date: Apr 2008
Location: Ontario, Canada
Posts: 1,159
Too bad it's so much. It would be a total waste of money for me, once I do these brake and fuel lines I wouldn't have much of a use for it.
1993-VG30E-GXE is offline   Reply With Quote
Old 07-06-2009, 12:30 PM   #16
Ad·min·is·tra·tor
iTrader: (14)
 
DanNY's Avatar
 
Join Date: Aug 2000
Posts: 16,820
you need this tool (sorry for the large pic).
basically the center hex will push the metal ball out...you then turn the large hex and it will put a bead/groove on the tube.

it's about 30-40 bucks for each size...assuming they have the size 5/16.

http://www.holley.com/types/Earl%E2%...0EZ-Beader.asp






the bead form tool (bead form I) i have and it's great for ICs and etc...but it's too big for your 5/16 tubing.

the 45 flare is ok..but it's a ISO flare...so it bends out and pretty much folds over. that's what's on the stock brake lines. you must use a quality tool and tubing here or else it'll leak.

37 flare is used for AN plumbing.

any questions?

Last edited by DanNY; 07-06-2009 at 12:38 PM.
DanNY is offline   Reply With Quote
Old 07-06-2009, 10:49 PM   #17
Banned
Thread Starter
 
1993-VG30E-GXE's Avatar
 
Join Date: Apr 2008
Location: Ontario, Canada
Posts: 1,159
Good find, I'll buy it. One more question:

Fuel Spill Question:

After I've released fuel pressure, if there's still fuel in the tank, when I go to remove the send & return pipes from the hoses connecting to the Fuel Gauge Sender Unit, will fuel start spewing out like a syphoning action, and not stop until the tank ultimately empties?
1993-VG30E-GXE is offline   Reply With Quote
Old 07-07-2009, 05:23 AM   #18
Ad·min·is·tra·tor
iTrader: (14)
 
DanNY's Avatar
 
Join Date: Aug 2000
Posts: 16,820
Quote:
Originally Posted by 1993-VG30E-GXE View Post
Good find, I'll buy it. One more question:

Fuel Spill Question:

After I've released fuel pressure, if there's still fuel in the tank, when I go to remove the send & return pipes from the hoses connecting to the Fuel Gauge Sender Unit, will fuel start spewing out like a syphoning action, and not stop until the tank ultimately empties?
pull up rear seat..pull gas pump cover...pinch lines?
DanNY is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Bringing my 1996 Maxima back to the road after 8 years. My Coffee New Member Introductions 14 12-17-2016 01:40 PM
Found a 1987 MT maxima Forge277 1st & 2nd Generation Maxima (1981-1984 and 1985-1988) 12 06-13-2016 10:26 PM
car overheating Miket2006 6th Generation Maxima (2004-2008) 1 10-05-2015 08:19 AM
Need a consult before replacing fuel injector again... jmlee44 4th Generation Maxima (1995-1999) 7 10-04-2015 09:18 PM
1989 Nissan Maxima Brakes stuck on HerpDerp1919 3rd Generation Maxima (1989-1994) 2 09-29-2015 03:02 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -7. The time now is 12:03 AM.