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Old 03-21-2006, 08:01 AM
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Flexible transmission hoses insted of hard lines

I've read the other posts on this subject, but have not found an answer to this question - can appropriate flexible hose be used to link the transmission with the cooler(s)? I mean completely, without any hard line. If the hose is rated for pressure, why bend hard line? Has anyone done this?

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Old 03-21-2006, 08:36 AM
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Many companies make and sell flex lines for trannies. Nothing wrong as long as you route them away from moving parts and extreme heat.
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Old 03-21-2006, 10:20 AM
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JMark and I are in agreement. I have had all flex lines between my trans and cooler for 27,000 miles on my T. Just check the hoses and clamps regularly and look for trans fluid on the floor. Haven't had a problem yet.
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Old 03-21-2006, 11:02 AM
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Quote:
Originally Posted by bb66gmc
why bend hard line? Has anyone done this?
Hard line is less expensive and looks a LOT more professional IMHO. It is not hard to do and it separates the craftsman from the hackers.......unless you are talking about AN fittings and stainless lines.




I enjoy running lines and flaring tubing........and have the tools to do it.
So I may be biased.....
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Old 03-21-2006, 02:39 PM
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I have used the hoses for years never had a problem. Just be sure that the hose you use is for transmission fluid. You can get some at NAPA specifically for transmission fluid. They do not look too bad if you route them neatly and clamp them to the frame with some decent clamps.
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Old 03-21-2006, 05:22 PM
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I don't believe that bending and flaring steel tube is an issue. With even basic tools, it is fairly easy to get a neat installation. If you haven't done so, a few practice bends on scrap will quickly get you up to the level needed.

I use trans fluid flex lines on my T because my radiator doesn't have a trans cooler, and hanging one behind or in front of (depending on what school you prefer) of the radiator on a T-Bucket looks pretty bad. My T has a trans cooler mounted under the body very close to the trans, so flex lines are more dependable than hard lines in this installation, plus they are entirely out of sight from the casual observer - the best of both worlds.
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Old 03-21-2006, 06:31 PM
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I just used gas and oil resistant hose and usually buy it in bulk.

I have also used flared steel line custom bent to make it work the way I need it to. I just go by the individual situation when doing either type of line.
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Old 03-21-2006, 09:11 PM
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I like the hard line, because I learned how to bend and flare tubing early off. It's an actual trade as opposed to just throwing on some rubber.
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Old 03-21-2006, 11:05 PM
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Many modern cars use unfinned hard line up front as a p/steer cooler, just a thought.
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Old 03-23-2006, 06:17 AM
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Flexible transmission hoses insted of hard lines

Thanks for the replies. I have bent and flared tubing before, and it's not that big of a deal. But with these hard lines for my GMC, I can't bend them in one piece and get them back in the truck. As far as looks, I'm building a driver. As long as it's done right, I figure it will look o.k.
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Old 03-23-2006, 06:59 AM
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As a matter of information.......

Some parts stores carry a 6 foot lenght of tubing. Most do not ...but Car Quest Auto Parts does....
6 foot lengths means you can run a long way without couplers or fittings to join two pices.....

On my 32....I have a A/C fuel filter mid way the car.....and have only 3 pieces of fuel line...1 from the tank the the filter and 1 from the filter to the fuel pump...and 1 from the pump to the carb. NO joints or couplers...
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Old 03-23-2006, 03:34 PM
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Yeah, Duece, my fuel line is the same way - three pieces. I was hoping to avoid that with the trannie line, but the 90 degree turn up to the radiator would make it impossible to bend in one piece (and install). After reading the posts though, I think I'm going to make the line two pieces of steel . It will look better anyway.
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Old 03-23-2006, 04:36 PM
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I am running stainless braided lines and AN fittings. I put the B&M cooler above the rear diff. away from heat sources. Keeps cool.

Jason
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Old 03-23-2006, 04:47 PM
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Quote:
Originally Posted by bb66gmc
I was hoping to avoid that with the trannie line, but the 90 degree turn up to the radiator would make it impossible to bend in one piece (and install).
I have run hard lines for friends on lots of cars.......from small V8 Vegas to big Impalas and Galaxies....

6 foot should be enough to get from the transmission to a radiator on a 66 truck......if not..........maybe a extra cooler would work as a mid point...connection.





I often use a Ford transmission cooler......like the one shown........from a V8 Bronco. It uses 45 degree flared ends on 5/16ths tubing to connect......and also helps the transmission.....

Just a suggestion.......
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