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#1
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68 Brakes
Don't drive my 68 GTO much, because the brakes are CRAPPY! Replaced M/C, with a rebuilt, rebuilt calipers, wheel cylinders, and SS brake lines about 2 years ago. Brakes were acceptable. Drove it last fall, brakes were spongy. About 3 months ago, got in, and the pedal went to the floor. Front reservoir was dry. No visible leaks anywhere.Refilled the other day, tried bleeding calipers, no pressure. Thinking M/C is kaput.
Who makes a decent M/C for these cars. 4 piston calipers up front. Tired of the AutoZone Advance O'Reillys rebuilds that don't last. Does Wilwood, or anyone like that make a bolt up M/C, for these cars? Also, on the side of the M/C is a valve of sorts, that goes in the line, from the front reservoir, to the prop valve. What purpose does that valve have? Residual pressure for the calipers?
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be a simple...kinda man. |
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#2
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Possible it is leaking into the brake booster, look for drips down the bottom center of the booster.
RockAuto sells brand new AC delco master cylinders. In fact I have an extra I could sell you quite reasonably, bought one and never ended up using it. Does your mystery valve have a black rubber button on it?
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-Jeremy 1968 GTO 4-spd convertible, console, factory gauges, hidden headlights, 3.90:1 posi, AM/FM radio. 1962 Catalina convertible, Starlight black w maroon interior & white top. |
#3
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Is the valve you are referring to?
If yes, then it is a Hold Off Valve that forces the rear drums to actuate first.
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68 GTO 68 LeMans 68 LeMans Convertible 79 Firebird |
#4
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Quote:
I don't see fluid on the booster, I would think the rear reservoir would empty first, if it was leaking from the M/C. Rear reservoir is fine. The pic of the AC Delco M/C on Rock Auto shows something different than mine. My M/C has the 2 bales to hold the cap down, the one pictured has a bolt in the center, to hold the cap on.
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be a simple...kinda man. |
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