stainless braided tranny line sprung a leak??

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northeastmopar

northeastmopar

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Just installed two years ago. Started my car today for the Spring and my Royal Purple was dripping all over the ground. I thought it was just the tranny fitting that needed to be tightened. Put her up on the lift and started it up. Line was pouring fluid about 6 inches away from the tranny right through the braided stainless. My mechanic said the line is not for tranny use??? My auto speed shop said that line is good for gas, oil, tranny fluid and anything except alcohol??? Now I am at a crossroad here. Is it just a fluke and I should replace the same type line?? Is it not good with Royal Purple tranny fluid?? I could not use the prebend steel lines as the headers were in the way big time?? My mechanic said to just by good quality rubber tranny line??? Never heard of it. What should I do?? Anyone on here have a stainless line leak like that?? It was about 3" away from the header collector, so that should have been ok, right??
 
I used 5/16" steel fuel line from O'reilly and bent my own up, ran them up against the inside of the frame rail all the way to the front and it worked great.
That sucks about your expensive stainless!
 
Does your lines have the white ptfe liner?
 
MobileCustoms said:
I used 5/16" steel fuel line from O'reilly and bent my own up, ran them up against the inside of the frame rail all the way to the front and it worked great.
That sucks about your expensive stainless!
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Ya, with my car it was issues with the Dougs headers being so close. So I decided flex line was easier to bend and buckle to the frame rails. Not to mention I think I suck at doing the plumbing stuff....
 
northeastmopar said:
No. It is a black rubber. Maybe the parts store is buying **** hose?
Click to expand...

The rubber inside broke down, not quality line.
Look for line with a white liner, it is resistant to everything.
Fragola from Summit I have had good luck with, buy yourself the pre-made ones.
 
northeastmopar said:
Ya, with my car it was issues with the Dougs headers being so close. So I decided flex line was easier to bend and buckle to the frame rails. Not to mention I think I suck at doing the plumbing stuff....
Click to expand...
ATF can run pretty darn hot, then placed next to the headers and the temperature the rubber can see may be much higher than you think.
I went through this using AN-10 hoses from the oil filter adapter to a remote filter. Even with a protective aluminized wrap, the hoses would eventually start seeping. When I'd remove the hose fitting, I could hear the inside cracking as the hose was bent. :eek: On that engine, oil temperatures would sometimes exceed 290 F, but having the exhaust right there made it that more worse. IF you can find an AN hose with continuous use temperature rating above the expected fluid temperatures, then you'll still need to insulate from the header heat. Aeroquip firesleeve plus a fiberglass reflective sleeve over it would be good combo, although no guarentees.

I think you're best off with a steel or st steel hardline like factory. Use the factory type supports for it. You can still slip insulation and/or reflective material over them if needed.

The teflon plastic interiors like sireland mentioned are common in -3 and -4. Agree thats a possible option. Might need a little larger inside diameter, -5 or 6 ? For the 90 degree turns, use the matching AN tube type fittings. The hose won't make tight turns and you don't want to loose flow with a sharp elbow.
 
Mattax said:
ATF can run pretty darn hot, then placed next to the headers and the temperature the rubber can see may be much higher than you think.
I went through this using AN-10 hoses from the oil filter adapter to a remote filter. Even with a protective aluminized wrap, the hoses would eventually start seeping. When I'd remove the hose fitting, I could hear the inside cracking as the hose was bent. :eek: On that engine, oil temperatures would sometimes exceed 290 F, but having the exhaust right there made it that more worse. IF you can find an AN hose with continuous use temperature rating above the expected fluid temperatures, then you'll still need to insulate from the header heat. Aeroquip firesleeve plus a fiberglass reflective sleeve over it would be good combo, although no guarentees.

I think you're best off with a steel or st steel hardline like factory. Use the factory type supports for it. You can still slip insulation and/or reflective material over them if needed.

The teflon plastic interiors like sireland mentioned are common in -3 and -4. Agree thats a possible option. Might need a little larger inside diameter, -5 or 6 ? For the 90 degree turns, use the matching AN tube type fittings. The hose won't make tight turns and you don't want to loose flow with a sharp elbow.
Click to expand...
I just ordered a pair of the steel prebent lines. I am going to try and sneak those in. I think originally I was having issues with the fan blades and fan cowl. I have since changed to electric fans and now have lots of room at the bottom of the radiator. I have a Griffin exact fit unit so that end should be ok. I think these hug the oil pan rail and go directly back to the tranny. So they may work after all and I think the headers are really not close to the tranny. I will be able to tell as soon as I see the lines.
 
Steel braid is for protection of the hose- the rubber inside it still deteriorates. Better quality is needed.
 
northeastmopar said:
Just installed two years ago. Started my car today for the Spring and my Royal Purple was dripping all over the ground. I thought it was just the tranny fitting that needed to be tightened. Put her up on the lift and started it up. Line was pouring fluid about 6 inches away from the tranny right through the braided stainless. My mechanic said the line is not for tranny use??? My auto speed shop said that line is good for gas, oil, tranny fluid and anything except alcohol??? Now I am at a crossroad here. Is it just a fluke and I should replace the same type line?? Is it not good with Royal Purple tranny fluid?? I could not use the prebend steel lines as the headers were in the way big time?? My mechanic said to just by good quality rubber tranny line??? Never heard of it. What should I do?? Anyone on here have a stainless line leak like that?? It was about 3" away from the header collector, so that should have been ok, right??
Click to expand...

Hello northeastmopar.
Don't know what brand you used that failed but I have used Aeroquip products on all our race cars (Oil,Fuel,cooling) without issue over the years.
You get what you pay for.
Investing in quality products pays off in the end.
Aeroquip Performance | Performance Hoses & High Pressure Hoses

Eaton Aeroquip Hose, Fittings & More at Summit Racing

Hope this helps,
happy Mopar :)
Arron
 
Aeroquip is certainly one of the better brands to purchase but that doesn't change the fundamental issue. The liner was subject to heat exceeding its working range.
 
I have used fuel line on transmission coolers for 30 or 40 years on cars with no issue. Often get 10 years without issue (before I sell the car). Trans lines are low pressure. Sounds like cheap Chinese crap.
 
Mattax said:
Aeroquip is certainly one of the better brands to purchase but that doesn't change the fundamental issue. The liner was subject to heat exceeding its working range.
Click to expand...

Hello All
Not seeing the damaged area of hose and or how it was installed I think that is just an assumption.
Was the hose kinked at some point in its life?
Excessive radius routing the hose?
Defect during manufacturing?
Numerous things and cause a failure.
Happy Mopar :)
Arron.
 
Arron tate said:
Hello All
Not seeing the damaged area of hose and or how it was installed I think that is just an assumption.
Was the hose kinked at some point in its life?
Excessive radius routing the hose?
Defect during manufacturing?
Numerous things and cause a failure.
Happy Mopar :)
Arron.
Click to expand...

If I was guessing, heat got to it. I ran mine out of hi heat hydraulic hose , and protected it w/ home made heat shields, also ran it where it was protected the best from chaffing and (hopefully not) any explosions.
 
famous bob said:
If I was guessing, heat got to it. I ran mine out of hi heat hydraulic hose , and protected it w/ home made heat shields, also ran it where it was protected the best from chaffing and (hopefully not) any explosions.
Click to expand...

Hello all
Guessing did not put a man on the moon, facts did.
Happy Mopar :)
Arron.
 
Arron tate said:
Hello All
Not seeing the damaged area of hose and or how it was installed I think that is just an assumption.
Click to expand...
And you have done the same. That is the nature of helping over over the internet. Based on the information available my conclusion is logical, as is famousbob's.
Was the hose kinked at some point in its life?
Excessive radius routing the hose?
Defect during manufacturing?
Numerous things and cause a failure.
Happy Mopar :)
Arron.
Click to expand...
The questions you ask now rhetorically show that you are guessing. Welcome to the club.
laugh2-gif.gif

upload_2019-3-27_8-33-55.gif
 
Mattax said:
And you have done the same. That is the nature of helping over over the internet. Based on the information available my conclusion is happened, as is famousbob's.
The questions you ask now rhetorically show that you are guessing. Welcome to the club. View attachment 1715309917
View attachment 1715309915
Click to expand...

Hello All,

I for one did not shoot from the hip and provide reply without enough facts to help guide a fellow FABO member to correctly diagnose and conduct a safe, reliable, and cost efficient repair.

As for famousbob, I agree wholeheartedly with him as he did in Fact pose his response as a Hypothetical Statement by adding
"IF I was to guess"

Your reply was a statement "The liner was subject to heat exceeding its working range"
Given that statement I would have to ask you the following,
What is the operating range of the hose that is in question?
What is the temperature about 3" away from the header collector under the various conditions that the car is subject to.
logic would dictate that not having enough facts it would be hard to draw a definitive conclusion to the failure.

Yes I did ask questions to formulate a Factual Response.
As of this post have not seen any answers to my questions / concerns thus I have not stated hypothetically what I think happened to the hose.

In my original post I did proved clear factual advice where our fellow FABO member could find information that they then could in turn use to conduct a safe, and reliable repair.
Aeroquip Performance | Performance Hoses & High Pressure Hoses
Technical Specs

Speaking of logical here is the father of it.


Just saying.
Happy Mopar :)
Arron
 
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