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

Transmission line vs rubber...

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Old Sep 9, 2008 | 04:00 PM
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Default Transmission line vs rubber...

I have a 86 and there was a major leak in the transmission lines....I found the leak and figures its in one of the bends. Is is ok to use the rubber flex line in place of the bends?
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Old Sep 9, 2008 | 04:05 PM
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I'd imagine the trans fluid would eat up the rubber line. Can't you just change the metal line?
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Old Sep 9, 2008 | 04:24 PM
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I could but I am not the best bender and it get it so perfect and around all the "stuff" is a huge chore.....i guess I will have to bite the bullet and just do it huh...
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Old Sep 9, 2008 | 04:29 PM
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Take your time and get a line bent up. Hot trans flid + hot cats=big trouble.
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Old Sep 9, 2008 | 04:40 PM
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Is that the same line as used for fuel lines? Its not underpressure so brass compression fittings should work right?
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Old Sep 9, 2008 | 08:41 PM
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I've repaired many trans lines with the comp fittings and a section of steel line. Have even used copper line a few times. No problems in this repair if done correctly. Good luck

Joel
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Old Sep 9, 2008 | 09:17 PM
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Originally Posted by rharker
I'd imagine the trans fluid would eat up the rubber line.
Why?
Industrial machinery everywhere uses rubber hoses at much higher pressures.
Just buy some quality hyd hose with the internal braiding;usually rated at 300psi, way in excess of the nominal 50psi that trans lines are at.
Mine has been within 1/2" of the headers for 8 years ; no probs
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Old Sep 10, 2008 | 09:17 AM
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Originally Posted by rodj
Why?
Industrial machinery everywhere uses rubber hoses at much higher pressures.
Just buy some quality hyd hose with the internal braiding;usually rated at 300psi, way in excess of the nominal 50psi that trans lines are at.
Mine has been within 1/2" of the headers for 8 years ; no probs

Exactly, most people use rubber lines when they add an Tranny cooler.

Vic
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Old Sep 10, 2008 | 09:59 AM
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To add, the mfg.'s of hose/line will state what fluids are acceptable for any given line (including oil, synthetics, and fuels). I am using earl's pro lite 350 w/all -6 fittings (any quality hose is acceptable) w/no hard lines. Doing it from scratch allowed me to run the lines over to the frame rail, and along the top of the frame rail to the rad. and cooler (this insures lines/fluid can't get toasted, and no more clearance issues). If you are considering running pump gas, or any doubt of useage (see my thread on "att all using braided line...")teflon core is the only hose available that is imperviuos to all fuels and oils.

Last edited by mseven; Sep 10, 2008 at 10:25 AM.
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