2.5 n/a diesel fuel line size - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old August 18th, 2014, 04:05 PM
byrnecc's Avatar
byrnecc
Status: Offline
Conor
1986 ex-mod 110
Member
 
Join Date: Mar 2013
Location: Howard County, MD
Posts: 293
Registry
2.5 n/a diesel fuel line size

Couldn't find a definite answer, I think it's 5/16? Looking to replace some fuel lines around the filter
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old August 18th, 2014, 04:09 PM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,250
Registry
The main lines are 3/8" nylon tubing. Some of the lines around the engine are 5/16" nylon tubing. I forget which ones. Standard nylon tubing is all you need. If you are using any of the stock barb style fitting, you need to very carefully heat the nylon to the point it becomes soft....and then insert.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #3  
Old August 18th, 2014, 04:56 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,813
Quote:
Originally Posted by byrnecc View Post
Couldn't find a definite answer, I think it's 5/16? Looking to replace some fuel lines around the filter
Size = 8mm
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old August 18th, 2014, 05:38 PM
byrnecc's Avatar
byrnecc
Status: Offline
Conor
1986 ex-mod 110
Member
 
Join Date: Mar 2013
Location: Howard County, MD
Posts: 293
Registry
trying to order off of mcmaster-carr, what should the inner and outer diameter be? Or a part # if that'd be easier

------ Follow up post added August 18th, 2014 03:42 PM ------

McCaster-Carr 5140K95 would that work? Would this be compatible with stock fittings?
Reply With Quote
  #5  
Old August 18th, 2014, 05:45 PM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,250
Registry
The numbers being quoted are the outer diameter. Normal 3/8" tubing is 1/4" ID and 5/16" is 0.233" ID. ID does not matter a whole lot.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #6  
Old August 18th, 2014, 05:48 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,550
Registry
john, conor's truck has non stock push-in fittings, not barbed fittings. is it worth trying to make them work or is it safer to go back to barbs?
Reply With Quote
  #7  
Old August 18th, 2014, 05:52 PM
byrnecc's Avatar
byrnecc
Status: Offline
Conor
1986 ex-mod 110
Member
 
Join Date: Mar 2013
Location: Howard County, MD
Posts: 293
Registry
Ha, news to me. Thanks Ed
Reply With Quote
  #8  
Old August 18th, 2014, 05:57 PM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,250
Registry
Personally, I think the barbed fitting are a poor design. The best is proper compression fittings with inserts. Push to connect fittings are better than the barbs and not as good as the compression fittings, IMO.

Anywho, all that matters is that you get the correct OD tubing for the push connect fittings.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #9  
Old August 18th, 2014, 06:32 PM
byrnecc's Avatar
byrnecc
Status: Offline
Conor
1986 ex-mod 110
Member
 
Join Date: Mar 2013
Location: Howard County, MD
Posts: 293
Registry
Are these connections worth reusing?
Attached Thumbnails
Click image for larger version

Name:	photo (2).JPG
Views:	130
Size:	97.4 KB
ID:	101170  
Reply With Quote
  #10  
Old August 18th, 2014, 07:16 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,813
I would not reuse them as they are plastic line in a metal fitting with a brass or plastic crush olive.
If you need some metal barbs, I have drawers full of them.
Just need to know if your fitting size is 14mm or 1/2 inch (you'll have to figure that out).

If you are routing fuel lines, I would also install a sedimenter and a 12V Fuel pump as well.
That way your fuel system is self bleeding.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #11  
Old August 18th, 2014, 08:20 PM
byrnecc's Avatar
byrnecc
Status: Offline
Conor
1986 ex-mod 110
Member
 
Join Date: Mar 2013
Location: Howard County, MD
Posts: 293
Registry
It took a 1/2" wrench to get them off so I'm assuming that would qualify them as a 1/2" fitting. If I am buying this tubing http://www.mcmaster.com/#5140k94/=tc8kmk should I get these fittings?

Really don't want to order the wrong parts, at $13 those aren't really cheap
Reply With Quote
  #12  
Old August 18th, 2014, 08:26 PM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,250
Registry
Link does not work for me. Not sure what fittings you are planning on but nothing should be more than a dollar or two.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #13  
Old August 18th, 2014, 09:09 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,813
Quote:
Originally Posted by byrnecc View Post
It took a 1/2" wrench to get them off so I'm assuming that would qualify them as a 1/2" fitting. If I am buying this tubing http://www.mcmaster.com/#5140k94/=tc8kmk should I get these fittings? Really don't want to order the wrong parts, at $13 those aren't really cheap
If you do NOT plan to use bio-fuels, I would use metal barbed fittings to fit your filter and fuel pump and run 5/16" fuel line from the local auto supply with hose clamps.
There are many ways to successfully run new fuel lines and various opinions will come from different people.
I am no fan of the plastic fuel lines for obvious reasons and would never use it.

1/2" wrench has nothing to do with the fuel fitting size.
It's the outside diameter of the fuel fitting.
Get yourself a thread and bolt size key from Fastenal.
They can explain how to use it.
You'll have to unscrew the fitting to measure the size and thread pitch.

John:
I sometimes have to hi-lite links and cut and past them in a new browser session to get them to work.
Give it a try and let us know if it works.
The link Conor posted went to a plastic line.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #14  
Old August 18th, 2014, 09:49 PM
byrnecc's Avatar
byrnecc
Status: Offline
Conor
1986 ex-mod 110
Member
 
Join Date: Mar 2013
Location: Howard County, MD
Posts: 293
Registry
I'm thinking of just getting whole new housing since the current one is very loose and the filter is a huge pain to change (bolt running from top to bottom of filter)...I'd also know what size the threads would be for new fittings. Good idea or no?
Reply With Quote
  #15  
Old August 18th, 2014, 09:54 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,813
Sure a spin-on is 10 times easier to change.
You just need enough room to slip the element under the housing and screw it in evenly.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #16  
Old August 18th, 2014, 09:58 PM
byrnecc's Avatar
byrnecc
Status: Offline
Conor
1986 ex-mod 110
Member
 
Join Date: Mar 2013
Location: Howard County, MD
Posts: 293
Registry
Any links? Having trouble finding one...
Reply With Quote
  #17  
Old August 18th, 2014, 10:01 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,813
PM me your email.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #18  
Old August 18th, 2014, 10:02 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,550
Registry
sorry for being out of action.

I did some research and it looks like the filter housing is a Lucas / CAV filter:

http://www.autoelectricaldieselfueli...AT_Filters.pdf

Based on the info, the threaded fittings seem to be either 1/2"-20 or m14x1.5mm. If you have any numbers on the filter housing, you can cross reference using the table in the PDF file above. If OEM, my guess is HDF296.

IIRC, the filter housing was fine, no need to replace. The issue was that the rivets holding the bracket for the filter housing were loose in the bulkhead. The filter housing should be affixed to the bulkhead via screws, but I don't know if your bulkhead is tapped for the appropriate screws. At the moment, the loose fuel filter IMHO is not an issue. No need to replace the whole thing, you just need new hose - perhaps fittings - not sure.

That tubing in the link you posted looks too hard to me. probably meant for vacuum service.
Reply With Quote
  #19  
Old August 18th, 2014, 10:13 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,813
Excellent link and all around advice Ed...
Seems like those riv-nuts work for a while and then give up over time even when installed properly, especially when over tightened... use to use them for the filters, but gave up a few years ago...
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #20  
Old August 18th, 2014, 10:34 PM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,250
Registry
If looking for an alternative, I would suggest the Standadyne FM-100. Fits right in the stock location.

Here is an example of where to find the heads, shown with three different styles of ports: http://www.thedieselstore.com/templa...0Filter%20Head

And the filter elements: http://www.thedieselstore.com/templa...Fm100%20Filter I use a 6", 2 micron element.

IMO, the nylon tubing is a better choice than fuel hose. It is chemically impervious to all fuels including biodiesel. It is cheap and easy to find. With compression fittings, it is rated for 1000s of psi. I'm not sure why people replace it with fuel hose. Good fuel hose is expensive and normal fuel hose will break down over time.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
diesel, fuel

Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Front brake line - why hard line & flex line? jefhuf Defender Technical Discussions 5 January 13th, 2012 09:03 AM
What diameter is the plastic fuel line on a LR diesel evilfij Defender Technical Discussions 17 June 27th, 2010 11:23 PM
200tdi fuel line, hose size tomaco1 Defender Technical Discussions 5 March 12th, 2009 10:38 AM
fuel pump line size? (AN spec) rgrrvr Defender Technical Discussions 0 July 2nd, 2008 02:14 PM
Line Lock for Winch Line Maine 110 The Vendors Loft 6 February 7th, 2006 06:47 AM

» Defender Registry

Blanca

roverguy2

White

KGH
Add your Defender

All times are GMT -5. The time now is 10:08 PM.


Copyright