C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

custom clutch line, think it will work?

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Old Jun 6, 2012 | 05:25 PM
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Default custom clutch line, think it will work?

So i didnt want to pay 130 bucks for a line so i figured i put one together. Bought the right flares from advanced, cut them in half and got the hydrolic place to silver solder some hydrolic fittings onto the end. Cut it to length and i still have to bend a 90* into either end but thinking it should work. All the inner diamiters are the same as stock and worse comes to worse i reuse my old one that just looks rough.

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Old Jun 6, 2012 | 06:01 PM
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Silver solder is some pretty tuff stuff so it should be fine. Back in my racing days I blew a headgasket right between 3&5 cylinder, took metal out of the head and the block. An old welder told me he could fix it, he used silver solder and I had him do it, put it back together and went back racing. The repair held up great.
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Old Jun 6, 2012 | 06:04 PM
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Im wondering is brake fluid more caustic than hydrolic fluid. I doubt it would eat through the teflon interior of the braided steel.
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Old Jun 6, 2012 | 06:57 PM
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Originally Posted by rithsleeper
Im wondering is brake fluid more caustic than hydrolic fluid. I doubt it would eat through the teflon interior of the braided steel.
Hope it works. By the way, the word is "hydraulic".
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Old Jun 6, 2012 | 07:17 PM
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Brake fluid is hydraulic fluid. As long as the solder holds up it should be fine. The brake fluid will not hurt the teflon.

There are fittings that have the metric thread for the master and slave that adapt to -3 or -4 line. Then just connect the two fittings with a braided hose. That might have been easier.

Part numbers 305-03M121 or 305-04M121 on this site:
http://www.anplumbing.com/Adapters/Steel-13.html
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Old Jun 6, 2012 | 07:48 PM
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Originally Posted by Kubs
Brake fluid is hydraulic fluid. As long as the solder holds up it should be fine. The brake fluid will not hurt the teflon.

There are fittings that have the metric thread for the master and slave that adapt to -3 or -4 line. Then just connect the two fittings with a braided hose. That might have been easier.

Part numbers 305-03M121 or 305-04M121 on this site:
http://www.anplumbing.com/Adapters/Steel-13.html

To be more accurate,

brake fluid starts out as lightweight hyd fluid but then it has a ton of acid blended in to fight corrosion and oxidation of internal brake parts and to prevent boiling at its thin viscosity...until it gets to a class by itself. Too caustic to use elsewhere in other systems. Brake fluid introduced into the typical hydraulic system will destroy the seals in a matter of hours. I do not know about teflon, but most rubber has to be vitron(sp?) to resist the acidic brake fluid. Thats why rubber brake lines are more costly hoses.
Spill some hyd fluid (power steering or trans fluid) on the hood. Now spill some brake fluid. See where you have paint etched...
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Old Jun 6, 2012 | 08:20 PM
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Ill test it for a few weeks before trusting it far from home. I got it in and seems like its holding pressure. Im fed up tonight being on my back dealing with the pedal. Ill finish tomorrow and then test on the road. Worse comes to worse ill clutchless shift home.
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Old Jun 6, 2012 | 08:30 PM
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Originally Posted by leesvet
To be more accurate,

brake fluid starts out as lightweight hyd fluid but then it has a ton of acid blended in to fight corrosion and oxidation of internal brake parts and to prevent boiling at its thin viscosity...until it gets to a class by itself. Too caustic to use elsewhere in other systems. Brake fluid introduced into the typical hydraulic system will destroy the seals in a matter of hours. I do not know about teflon, but most rubber has to be vitron(sp?) to resist the acidic brake fluid. Thats why rubber brake lines are more costly hoses.
Spill some hyd fluid (power steering or trans fluid) on the hood. Now spill some brake fluid. See where you have paint etched...
Good info, I didn't realize that was how brake fluid was manufactured.

I think the seal material you were referring to is "Viton".
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Old Jun 6, 2012 | 08:43 PM
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Both Viton and Teflon will hold up well to brake fluid. The OEM clutch line is lined with teflon as well.
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Old Jun 6, 2012 | 11:14 PM
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Plus their are no "seals" in my setup unlike a hydraulic system on a fork lift or something. Its just metal flares. As long as the teflon inside the steel braid doesnt degrade is will be fine.

Another question, since my line is longer (wanted to play it safe) it comes close to my collector on my headers. Maybe within 3 inches. Would that be a factor at the track with 20 min sessions? Clutch shouldnt boil like brake fluid but i know it can. Im using super blue anyway so its about as good as it can be.
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Old Jun 6, 2012 | 11:35 PM
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Originally Posted by VetteMed
Good info, I didn't realize that was how brake fluid was manufactured.

I think the seal material you were referring to is "Viton".
yep, brake fluid has that dry feel to it, thats the acid that makes it feel dry opposed to common oils.

Brake fluid is made that way to satisfy the DOT in regards to their regulations that the fkuid cannot cause corrosion, cannot degrade itself from heat of boiling, and it has to be self cleaning so the control valves in a brake system stay clean and functionable at all times. Its all about keeping a dirty sytstem sterile clean inside so it never fails from a caliper frozen or blown seals or something of that nature,. Brake systems are pretty HD and usually fully functional 30 yrs down the road...because of the acid that keeps everything clean inside.
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Old Jun 7, 2012 | 09:46 AM
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Originally Posted by rithsleeper
Plus their are no "seals" in my setup unlike a hydraulic system on a fork lift or something. Its just metal flares. As long as the teflon inside the steel braid doesnt degrade is will be fine.

Another question, since my line is longer (wanted to play it safe) it comes close to my collector on my headers. Maybe within 3 inches. Would that be a factor at the track with 20 min sessions? Clutch shouldnt boil like brake fluid but i know it can. Im using super blue anyway so its about as good as it can be.
Yes it can boil. I had the pedal go down and not come back up once because the headers boiled the fluid. That is with the OEM line. I wrapped a spark plug wire type sleeve around the tube and the issue went away. The flexline i made with the fittings I posted earlier I ran as far away from the exhaust as I could.
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