Vibrated a slice into my PS supply hardline, patch suggestions?

IwantMKIII

WVU MAEngineering
Jun 12, 2007
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The worm gear clamp on the oil pan for my oil cooler lines was resting on the PS RETURN hardline. I guess the vibration of the engine managed slice a small gash into the hardline causing it to gush PS fluid :3d_frown:.....who would thought....

Suggestions on a patch method? Cut is very small so pressure levels is minimal. I realize this would be much easier if it was the return line but unfortunately its not.

BTW, i DO NOT have a welder handy, im out of state. Not sure if patch welding it is the best idea or not, don't want to melt the line by accident.

I was thinking heater hose, sliced down the middle, put it over the cut, clamps over the cut. Or maybe even epoxy/silicone on the inside of the hose and clamp over the cut. Not sure what ATF fluid can penetrate vs. not.

another thing is, ive used epoxy with ATF fluid before and it penetrated it in no time, any thoughts on silicone vs. epoxy?

EDIT: i made a mistake, this is the RETURN LINE!
 
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IwantMKIII

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Jun 12, 2007
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^well, im not sure what the pressure levels are, id be very curious as the sliver into the line is very small, barely the width of the metal of the worm clamp. Since pressure is a factor of area and all that mumbo jumbo i figured a patch could even be a somewhat perm solution as it really isnt a hole or anything.
 
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Poodles

I play with fire
Jul 22, 2006
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Here's what the pressures are like per the TSRM...

SR_043.gif
 

IwantMKIII

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IJ.;1189183 said:
Knew it was around 1000 psi but can spike higher on full lock if pulled hard down.

BBQ #2 coming up with a patched line...... :nono:

figgie;1189197 said:
patching a 1000psi line?

Hope you are not serisouly contemplating that!

didn't think it was THAT high of pressure :aigo:
 

Poodles

I play with fire
Jul 22, 2006
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Driftmotion line is right on the end of what that line can handle... (no offence Aaron).

Oh, and YES, it can cause an engine fire. Seen two MKIII's at junkyards that both had engine fires and I traced both back to a PS leak that sprayed fluid on the manifold/turbo/downpipe.

I'm running a line I got from Oreilly's and it's been fine, looks just like the stock line too (far cheaper than stock, and they told me it wasn't available, but they where just being lazy at the dealer)
 

figgie

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Mar 30, 2005
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Poodles;1189208 said:
Driftmotion line is right on the end of what that line can handle... (no offence Aaron).

Oh, and YES, it can cause an engine fire. Seen two MKIII's at junkyards that both had engine fires and I traced both back to a PS leak that sprayed fluid on the manifold/turbo/downpipe.

I'm running a line I got from Oreilly's and it's been fine, looks just like the stock line too (far cheaper than stock, and they told me it wasn't available, but they where just being lazy at the dealer)

I seen that line. That line is actually fine as it is based on the Eaton PTFE hydraulic hose which are good for 2000 psi nominal pressure with a max of 4000psi and burst rating of 6000psi. I recognize the crimps ;).
 

IwantMKIII

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Jun 12, 2007
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well, lucky for me (in this case) im an idiot. I didn't have the right viewing angle under the car with the small floor jack, realized it was the RETURN line that's acutally sliced there. Took some measurements, approx 3mm long and 1mm at its widest point. of course the cut all the way through the metal wont be the same specs but thats worst case scenario. Since its the return line some silicon/epoxy and clamps with a hose shouldn't be an issue. Anyone disagree? How about silicone vs. epoxy if any at all?
 

Zumtizzle

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Oct 21, 2006
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that line is under 100 at ANY FUCKING AUTO PARTS STORE.


.................................Thanks. ;)

DO NOT CHEAP OUT HERE!

PS Fluid is extremely flammable!
 

IwantMKIII

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Jun 12, 2007
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line patched with rubber hose, clamp, blue rtv. Tested and works, no leaks.


As for flammability, since this hole is extremely small and under little pressure im not worried about it spraying all the way up to the exhaust mani. As a back-up system ive put in place a small sheild where the leak is so that if SOMEHOW it does spray a little bit, the fluid will be redirected towards the ground avoiding any potential fire. My buddy is getting a parts car and will give me parts if i need them so this will be a fine temp solution.
 

IwantMKIII

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WhtMa71;1189887 said:
If by PS fluid you mean ATF in a Supra.


i thought of this as well. I searched around and found ATF can ignite around 300* which an exhaust manifold can easily reach these temps, nothing else though besides the turbine section

I don't know where that temp comes from or its validity, nor do i know the difference between a traditional ATF vs. Synthetic. Either way though you shouldn't be using Syn in your PS anyway, it seems to always make the system whine, at least in my experience
 

figgie

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Poodles;1189224 said:
Swear it was you that mentioned it was on the edge of it's burst rating LOL


If it was the Aeroquip AQP hose and crimp yes but those are definetly NOT the AQP crimp on fittings. Those are Eaton all the way.

***YES YES! They are the same company! Consider Aeroquip their low pressure hose division while Eaton goes to about 10,000 psi hose ratings.***