coiling tubing

For discussing the modifications needed for diesel vehicles to run with 2 tank veggie oil conversions.

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coiling tubing

Postby Clay » Sat Dec 03, 2011 9:15 pm

Does anyone have any tricks to getting tubing to coil without kinking? I've got some bendable 1/2" OD aluminum tubing that I'd like to use for both my heated puckup and filter wrap but I'm afraid it's going to try'n kink if I bend it that tight. I don't have a tubing bender either. Any thoughts?
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Re: coiling tubing

Postby John Galt » Sat Dec 03, 2011 10:10 pm

Fill the tubing with fine sand or salt to reduce kinking.
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Re: coiling tubing

Postby Burbarian » Wed Feb 22, 2012 11:27 pm

Had occasion to bend some aluminum fuel tubing a while back. Dropped by the local Tractor Supply and picked up a 1/2" id tension coil spring, about 18in long. Just bend the ears out of the way and slip it on the aluminum tubing, and bend. The coils keeps the tubing from kinking. It could get a little tight on the spring, but not too tight to preclude sliding the spring off to the next section of tubing to bend.
1987 GMC Suburban 6.2L V8 IDI
1985 Merc 300TD
1968 CAT D4D 3304 dozer
1971 Waldon 4100 loader
1981 IHI 30F excavator
1995 Changfa 195 w/ ST 10kw genset
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Re: coiling tubing

Postby belchfire » Fri Apr 06, 2012 5:35 pm

The sand or salt trick will work ok. If you can cap the ends, water will work too. Personally, I'm using PEX tubing. It's easy to work with and it won't react to your oil. While it will loose stregnth at elevated temperatures, We're only pushing 20 psi max. Been running it for 4 years with zero problems.
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