Finally the proper fuel lines

p400

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I have had great success using 5/16 Amal banjos and 5/16 petcock outlet spigots while still using 1/4" tygon clear tubing.
The clear Motion Pro 1/4 tygon yellows in just several months, but easily replaced.
You can slip ferrules over the fittings, then press the tubing in place to duplicate the proper ferrule look if needed.

5/16 Golan filters as well.

The need for clamps or ferrule crimping all goes away.


516banjo2.jpg
 
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I did have to fight the fuel line to get it on but it wasn't bad. I can imagine if the center line was a little longer my words wouldn't be so kind.
 
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Yeah, that distance is very critical between the carbs. The fuel line I have is difficult to install with the carbs attached normally to the manifold. It is very easy to cross-thread the fittings because the hose is just a tiny bit short. So for reinstallation I install the carbs to the manifolds with the bolts loose, attach the fuel line to the carbs and then snug down the carb/manifold bolts. A bit of an unnecessary PITA to remove the float bowls for any reason. :mad:
 

Saber

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I purchased a new fuel line set last year. My crossover is too long. Also a PITA to put on. I am getting flow thru the kink in the line but I am concerned that the kink will eventually close off the flow. Is this fixable without buying a completely new one? Why cant they make them to a correct length?
20200701_100030.jpg
 

L.A.B.

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I purchased a new fuel line set last year.
Who from? :( Edit: On second thoughts maybe better not to say!

My crossover is too long. Also a PITA to put on.
I'm not surprised!
Edit: https://www.thebonnevilleshop.com/p...eville-1979-82-fuel-line-assembly-pn-83-7155/

I am getting flow thru the kink in the line but I am concerned that the kink will eventually close off the flow. Is this fixable without buying a completely new one?
Just buy a couple of 180 banjos (and clips if you like).


Why cant they make them to a correct length?
View attachment 17962
The banjos are the wrong parts as they should be 180-degree not 150.

 
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DevonNorton

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Saber
Many types of clip available or just a twist of wire will do if you decide to make your own.
I use the double ear 'O' clips like these https://www.oetiker.com/en/Products/Clamps-and-rings/Ear-Clamps/PG101_151 (9-11mm size) with 180 banjos and the Motion Pro clear (now going yellow) fuel line.
Although discolouring over time, the fuel line is maintaining its flexibility for now. Much of the tubing being sold for this use hardens in no time and may then leak!
Andy
 

L.A.B.

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Where there's no call for absolute authenticity such as swooshdave's custom, then the 'one piece' line with ferrules is, in my opinion, more trouble than it's worth.

With the centre section cut to the approximate length and attached to the banjos the assembly can be fitted to the carbs and the hose clips tightened. The banjos are then set the correct distance apart making removing/replacing (or banjos with the two float bowls attached) less difficult.


The two outer sections I have secured with spring clips which can be detached at either end (usually at the banjo) for tank removal or the hose section can be replaced in a matter of seconds.



Yes, I prefer black hose and yes the plastic banjos are still in good condition.
 
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I use tygon 4040 long drouping run for water/dirt exposing, no filters ever, 180deg metal banjos, I second Oetiker Clamps which can be crimped after assembly for PERFECT fitted hose length. You can see the water or dirt and you pop off the fitting from the tank and dump it.
 

Tornado

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Where there's no call for absolute authenticity such as swooshdave's custom, then the 'one piece' line with ferrules is, in my opinion, more trouble than it's worth.

With the centre section cut to the approximate length and attached to the banjos the assembly can be fitted to the carbs and the hose clips tightened. The banjos are then set the correct distance apart making removing/replacing (or banjos with the two float bowls attached) less difficult.


The two outer sections I have secured with spring clips which can be detached at either end (usually at the banjo) for tank removal or the hose section can be replaced in a matter of seconds.



Yes, I prefer black hose and yes the plastic banjos are still in good condition.
This is essentially how I have mine. I use fuel line black rubber hose never have issues with the connector bit 'tween carbs as the rubber can be compressed a bit if slightly long. Ive found small spring type hose clamps hold very well and are less fiddly then jubilee/screw type clamps. A pair of needle nose pliers easily grab the tangs to fit or release the clamps.
As for seeing fuel, I run clear fuel filters each line down from petcocks so can see whats there.
 
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This is essentially how I have mine. I use fuel line black rubber hose never have issues with the connector bit 'tween carbs as the rubber can be compressed a bit if slightly long. Ive found small spring type hose clamps hold very well and are less fiddly then jubilee/screw type clamps. A pair of needle nose pliers easily grab the tangs to fit or release the clamps.
As for seeing fuel, I run clear fuel filters each line down from petcocks so can see whats there.


Like these? I've used these in the past too.
 
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Who from? :( Edit: On second thoughts maybe better not to say!

The banjos are the wrong parts as they should be 180-degree not 155.
The splayed banjos are for a Triumph as the carbs aren't parallel on a Bonneville.
 
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L.A.B.
doesn't the plastic banjos crush the filters? I find that they did, but not the pot metal ones. YMMV.
Cheers, T
Where there's no call for absolute authenticity such as swooshdave's custom, then the 'one piece' line with ferrules is, in my opinion, more trouble than it's worth.

With the centre section cut to the approximate length and attached to the banjos the assembly can be fitted to the carbs and the hose clips tightened. The banjos are then set the correct distance apart making removing/replacing (or banjos with the two float bowls attached) less difficult.


The two outer sections I have secured with spring clips which can be detached at either end (usually at the banjo) for tank removal or the hose section can be replaced in a matter of seconds.



Yes, I prefer black hose and yes the plastic banjos are still in good condition.
 

L.A.B.

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Actually...
..a little filter crush can be beneficial as it keeps the filter seated against the bottom of the banjo.

All metal banjos I've seen are taller and the inner depth is greater than the length of the filter so dirt can pass straight under the filter through the gap!





My T140's carbs would occasionally flood due to dirt getting through to the float needles until the metal banjos were shortened after which it has never happened again as far as I can remember.

I wonder how many inline filters have been fitted due to this problem?
 
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Show the difference between the filters (pics) with the cast pot metal and the plastic... here is where I am driving at Les. I found that the plastics crushed the filters, or compressed them more so than the cast pot metal ones. Again YMMV....
T
 
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L.A.B.

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Show the difference between the filters with the cast pot metal and the plastic... here is where I am driving at.
Sorry, but I don't know what old filters came from what banjos plus I modified the metal banjos some years ago. The metal banjo in the previous photo was new and unused.

Here's the current set fitted to my Commando that I've just removed for the photo and yes, they are distorted and some years old but not what I'd describe as crushed so as to impair their ability to function as filters?

 
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