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Old 04-25-2018, 11:24 PM   #321
HandOverFist
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Default Re: '66 Malibu N/SA

I don't recall seeing it mentioned earlier in the thread. What brakes are you using up front?
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Old 04-25-2018, 11:47 PM   #322
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Default Re: '66 Malibu N/SA

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I don't recall seeing it mentioned earlier in the thread. What brakes are you using up front?
I'm told they're the same a GM brakes from the early 70s. It's a Right Stuff disc conversion kit. I bought it when I was still planning this as a street car. I may upgrade to much lighter discs this summer, these are very heavy.
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Old 04-26-2018, 07:26 AM   #323
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Default Re: '66 Malibu N/SA

If brake pedal travel is the issue are there residual valves in the system?
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Old 04-26-2018, 07:55 AM   #324
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Default Re: '66 Malibu N/SA

Great Looking Car Dave.
Thanks for sharing the build with us.
Good Luck Racing This Year.
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Old 04-26-2018, 08:50 AM   #325
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Default Re: '66 Malibu N/SA

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If brake pedal travel is the issue are there residual valves in the system?
Pedal travel has not been a problem and it's a minimalist system, no residual or proportioning valves, just the master cylinder, wheel cylinders/calipers and the tubing that connects them.
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Old 04-26-2018, 09:33 AM   #326
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Default Re: '66 Malibu N/SA

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Pedal travel has not been a problem and it's a minimalist system, no residual or proportioning valves, just the master cylinder, wheel cylinders/calipers and the tubing that connects them.
I have found if the pedal is good but fades (no system leaks) it's a master problem.
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Old 04-26-2018, 06:00 PM   #327
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Default Re: '66 Malibu N/SA

That's what I was thought was most likely. Hopefully that'll do it. I hope to be able to check for leaks this weekend. Just need to enlist my son to press the pedal while I look everything over.
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Old 04-29-2018, 02:43 PM   #328
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Default Re: '66 Malibu N/SA

With a little assistance today I did some more testing on the brakes. No leaks, and it holds pressure a lot better. I see it dropping 50 PSI or so sometimes, but I think that's just me imperfectly maintaining pedal force. It's easy to get it over 1000, and as long as it stays over about 550 the 2-step should stay engaged.

I'm looking forward to taking the car out again, which is planned for the ADRA race on June 9th. Other than that I don't expect to run the car before the Salt Lake races. I'll just focus on the Summit Series with the Camaro.
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