1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Brake line leak, predicted damage done?

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Old 01-27-10, 10:23 PM
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Brake line leak, predicted damage done?

Hello all. So after buying my 85 rx7 a few weekend ago, and noticing a weakness in the brake system, I have found that there is a leak in my brake system, right under where the master cylinder meets the booster. I looked up the brake system in the service manual online, and I'm hoping that it will be a simple fix, something like a broken o-ring that sits between the booster and MC, and not a major fix, like buying a new MC or even booster. Of course I'm new to all this, so I wonder what all of you think. Is it likely a broken MC? Will I need to simply replace an o-ring?
What is the rx7 public's diagnosis?
Old 01-27-10, 10:42 PM
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Buy a rebuilt master cylinder. Brakes are not something to cheap out on.
Old 01-27-10, 11:19 PM
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Originally Posted by trochoid
buy a rebuilt master cylinder. Brakes are not something to cheap out on.
+1
Old 01-28-10, 06:50 AM
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Do you mean specifically a rebuilt master cylinder, or would it be alright if I just bought a new one? (http://www.autopartswarehouse.com/se...ster+Cylinder))
Or even a repair kit? (http://www.autopartswarehouse.com/sk...n+%26+Steering)
Sorry I'm just curious about how to go about doing this.
Old 01-28-10, 07:33 AM
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Waffles - hmmm good

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Reman or new theres little difference except price. Get which ever
you are comfortable with. Note that if it has leaked long enough into
the booster it may be bad as well. You should check to make sure
its functioning correctly before putting the new MC on or you'll end
up doing it twice.
Old 01-28-10, 11:17 AM
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Originally Posted by dwalk51
Do you mean specifically a rebuilt master cylinder, or would it be alright if I just bought a new one? (http://www.autopartswarehouse.com/se...ster+Cylinder))
Or even a repair kit? (http://www.autopartswarehouse.com/sk...n+%26+Steering)
Sorry I'm just curious about how to go about doing this.
new is preferable over rebuilt, imo
Old 01-28-10, 11:28 AM
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Check with RockAuto.com, prices are almost always farrrrrrrr better than everywhere else.
Old 01-28-10, 11:29 AM
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Waffles - hmmm good

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Yeah thats where I got my booster from. Good prices and shipped fast.
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