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Fuel line bending tips?

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Old Apr 12, 2006 | 10:21 AM
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Default Fuel line bending tips?

Can anyone offer up some tips on bending steel fuel line without kinking it? I do ok with shallow angles, but approaching those 90* angles it starts buckling and I'm afraid of restricting flow.

I'm using this bender:



And it's coming out like this:



I tried staging it, moving the line down a little bit at a time, and this is the result:


Last edited by Xakk; Apr 12, 2006 at 10:49 AM.
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Old Apr 12, 2006 | 10:37 AM
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try a little heat. I have 2 diffetent benders for different size lines, that looks like a "universal don't quite fit all" kinda tool, never used one. I "stage" it like you siad, make a lil bend, move it, make a lil more, etc..
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Old Apr 12, 2006 | 10:38 AM
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That shouldn't happen. Are you sure you're using the right parts in the bender? The pipe should fit very snugly into the grooves before you try to bend it. If it doesn't fit right you might as well bend it with your fingers.
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Old Apr 12, 2006 | 10:44 AM
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You need a better tube bender - that's not a good one. Snap-On makes a nice bender that will bend 4 different sizes without kinking - there is a photo of it in my "How to Build a Fuel Line" article if you want a copy:
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Old Apr 12, 2006 | 10:46 AM
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The wheel in the middle swaps out for the different sizes. The one on there is sized for 3/8, which is the size tubing I'm using. The 'universal' $2 bender had WAY worse results.
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Old Apr 12, 2006 | 01:11 PM
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Xakk -
Seriously, you need to throw that tube bender over the fence to your neighbor's yard and go buy a real tube bender. That's not a real tube bender.
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Old Apr 12, 2006 | 01:48 PM
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A old trick I use it to fill the line up with table salt, tape off both ends and then bend. That will prevent kinks, I have used that method over and over with good results (even without a bender) when you're done pour out the salt and rinse out with water.
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Old Apr 12, 2006 | 03:28 PM
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that salt thing sounds like a neat trick. I used a bender that looks pretty much like this pic:


it worked great and cost about $9.99.
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Old Apr 12, 2006 | 03:37 PM
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Originally Posted by PRNDL
that salt thing sounds like a neat trick. I used a bender that looks pretty much like this pic:


it worked great and cost about $9.99.
I've used that one for brake lines. No kninks.
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Old Apr 12, 2006 | 04:22 PM
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that's a junk bender, get a bender like the pic above. You can buy one that does several sizes (cheaper0 or one that does only 1 size (more expensive, usually higher quality tools)

I like the single size benders because the one size fits all won't let you make tighter bends in the smaller size tubing, that's the only drawback of those

Last edited by Twin_Turbo; Apr 12, 2006 at 04:37 PM.
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Old Apr 12, 2006 | 08:48 PM
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Be careful with those multi-fit benders, they work well but if you put the tubing in the wrong slot, the cast aluminum tab will break right off (ask me how I know). I got a one-size from grainger for about $40 and it makes beautiful tight bends without kinking, and the tab is steel. JOe
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Old Apr 12, 2006 | 10:14 PM
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Originally Posted by lars
Xakk -
Seriously, you need to throw that tube bender over the fence to your neighbor's yard and go buy a real tube bender. That's not a real tube bender.
I predict a thread in OT titled "WWOTD: Some **** just threw a crappy tube bender into my backyard" within 2 hours
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Old Apr 13, 2006 | 06:17 AM
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Originally Posted by PRNDL
that salt thing sounds like a neat trick. I used a bender that looks pretty much like this pic:


it worked great and cost about $9.99.
I ned to do some bending myself and just saw this bender at
Harbour Freights website regular $6.99 marked down to $3.99
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Old Apr 13, 2006 | 06:20 AM
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filling helps a ton
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Old Apr 13, 2006 | 12:09 PM
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Lars and everyone else is right......chuck that thing.
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Old Apr 13, 2006 | 01:00 PM
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Ok ok ok. I returned the crappy thing to O'Reilly and I'm heading down to Napa to see what they've got. Our Sears is about 10 ft sq, so they don't have squat. Worst case, there's always AutoZone.
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Old Apr 14, 2006 | 10:53 AM
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Ok, so I took Lars' (and everyone else's too) advice and returned the O'Reilly's bender and took a trip to Napa. After they tried to sell me the same bender I just returned, we found this one sitting on another shelf:



And here's the results of Round Two of the Great Fuel Line Wars:



Looks like I may have gotten a slight flat spot here. I think from trying to make things fit, but it doesn't look like it'll hurt anything. It's not bad.



I figure I'll have to reroute it when I go to put AC back on the car, but I'll deal with that later. This was the best I could do without flaring my own tubing (ie fixed length of 30"). Next time I'll try my hand at flaring.

On a side note, the tubing that O'Reillys sold me was labeled as brake line and not fuel line. Is this going to cause a problem? The car's still not running yet, so I've got plenty of time to change it if so, I'd just like to know ahead of time.

Thanks everyone for all your help!
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Old Apr 14, 2006 | 11:04 AM
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Old Apr 14, 2006 | 11:08 AM
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Originally Posted by PRNDL
that salt thing sounds like a neat trick. I used a bender that looks pretty much like this pic:


it worked great and cost about $9.99.
Thats similar to the one one I use. Got it from Snap-on a long time ago. Paid alot more than $9.99 to
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Old Apr 14, 2006 | 12:41 PM
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Originally Posted by PRNDL
that salt thing sounds like a neat trick. I used a bender that looks pretty much like this pic:


it worked great and cost about $9.99.
These work better if you replace the strap between the two segements with a 1/2" thick steel strap. The original one that comes will the tool can bend when doing 3/8" tubing.
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