C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Mar 25, 2023 | 08:56 PM
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Default Looking for brake info

Hello, new to owning a C3. My next step with this car is the brakes. They work but almost to the floor and they're super soft. So far I've replaced the master cylinder, and replaced one rear caliper that was clearly shot. There is still not much of a stopping difference. Any info on what I should do next is appreciated.
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Old Mar 25, 2023 | 09:24 PM
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Trapped air is the likely cause. These cars can be hard to get all the air bled out.
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Old Mar 25, 2023 | 10:12 PM
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We will assume the master was bench bled.

And for what it's worth, these Vette brake pedals may travel quite low. Just the way they are.

You can get four empty water bottles and four clear hoses, then open all four rear bleeders. Let them drip - drip - drip for an hour or more. Monitor the master fluid level. Don't touch the pedal.
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Old Mar 26, 2023 | 06:09 AM
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And sometimes you just have to invest in a pressure bleader. Push from the top. DON'T use a vacuum type bleeder that almost every shop uses. (As does the shop I work for). Vacuum type or suck bleeders and lip seals don't go well together.
think Motive Pressure bleeder with a custom made lid and clamp. Not the chains.
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Old Mar 27, 2023 | 02:43 PM
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Get, or make, a pressure bleeder. You can search the forum for home-built pressure bleeders. I made my own because I didn't wanna wait for one to arrive (figured I'd replace it later) and it works so well that I never replaced it.

Originally Posted by 79C3Vette
Hello, new to owning a C3. My next step with this car is the brakes. They work but almost to the floor and they're super soft. So far I've replaced the master cylinder, and replaced one rear caliper that was clearly shot. There is still not much of a stopping difference. Any info on what I should do next is appreciated.
Reply

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