majob brake problems.
Thread Starter
Racer
Joined: Jan 2010
Posts: 428
Likes: 1
From: San Antonio Texas
majob brake problems.
i have a 73 with power brakes. i have replaced the m/c and bled the brakes 3 times. the pedal is only firm the first couple of days then gradually begin to get soft till it will finally hit the floor. can some one please help me with what could be causing this issue. i know it must be getting in air but i dont know where. i it does not leak. so any help would be greatly appreciated.
Thread Starter
Racer
Joined: Jan 2010
Posts: 428
Likes: 1
From: San Antonio Texas
Race Director
Joined: Mar 2003
Posts: 11,608
Likes: 780
From: Eustis ( Area 51 Bat Cave ) Fl
You know I use search and many times find making it a fresh post gets new eyes and ideas and replies on a subject....99% of the time when a newbie with a question pops into the Laser for I have answered it more than once before...when I tell them about "search" I also give a link to a possible answer....seems more kind and friendly to me...after all the forum is about helping people...just food for thought...
Melting Slicks
Joined: Jan 2007
Posts: 2,589
Likes: 5
From: Salisbury Maryland
Does it matter? You have a 50/50 chance if you guess. Replace both of them to be sure. The rears are particularly susceptable to leaking due to the design, which is why the o-ring calipers are better for the application.
Contact VB&P, send your cores for swap or rebuild, they are the best to deal with.
P.S. I'm not trying to be a smart a$$, but you could spend the time and effort trying to find which rear caliper is leaking, replace or fix it, bleed 3x, drive it for 2 months, have the same problem and do it all over again. Or you could fix/replace them both and know they're good.
Contact VB&P, send your cores for swap or rebuild, they are the best to deal with.
P.S. I'm not trying to be a smart a$$, but you could spend the time and effort trying to find which rear caliper is leaking, replace or fix it, bleed 3x, drive it for 2 months, have the same problem and do it all over again. Or you could fix/replace them both and know they're good.
Melting Slicks
Joined: Jan 2007
Posts: 2,589
Likes: 5
From: Salisbury Maryland
So then that caliper when bled would show air in it....
You know I use search and many times find making it a fresh post gets new eyes and ideas and replies on a subject....99% of the time when a newbie with a question pops into the Laser for I have answered it more than once before...when I tell them about "search" I also give a link to a possible answer....seems more kind and friendly to me...after all the forum is about helping people...just food for thought...
You know I use search and many times find making it a fresh post gets new eyes and ideas and replies on a subject....99% of the time when a newbie with a question pops into the Laser for I have answered it more than once before...when I tell them about "search" I also give a link to a possible answer....seems more kind and friendly to me...after all the forum is about helping people...just food for thought...
You make a good point about giving a link, I was just too lazy to do it today
My caliper was leaking(badly), so it was obvious. When I got into my brakes 3 years ago, I had the same quandry. I remember someone posting the possibility that the caliper may not leak fluid, but may be sucking air into the piston seal if it is misaligned. I suppose that is possible that it would hold brake pressure(for a short time), not leak, and still draw in air.
Race Director
Joined: Mar 2003
Posts: 11,608
Likes: 780
From: Eustis ( Area 51 Bat Cave ) Fl
Believe you me I get lazy too...but I know how it feels on the other end to be told "Go look it up"
On another note, I have done business with Ken and met him at this past NCRS meet...a great guy and he tells me most Corvette parts houses buy the calipers from him....
Ken McCormick
Lonestar Caliper Co.
11299 Interstate 20
Canton, TX 75103
903-829-8400 Fax 903-829-8405
www.lonestarcaliper.com
ken@lonestarcaliper.com
On another note, I have done business with Ken and met him at this past NCRS meet...a great guy and he tells me most Corvette parts houses buy the calipers from him....
Ken McCormick
Lonestar Caliper Co.
11299 Interstate 20
Canton, TX 75103
903-829-8400 Fax 903-829-8405
www.lonestarcaliper.com
ken@lonestarcaliper.com
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Burning Brakes
Joined: Jan 2007
Posts: 1,057
Likes: 4
From: Concord Calif
i have a 73 with power brakes. i have replaced the m/c and bled the brakes 3 times. the pedal is only firm the first couple of days then gradually begin to get soft till it will finally hit the floor. can some one please help me with what could be causing this issue. i know it must be getting in air but i dont know where. i it does not leak. so any help would be greatly appreciated.
If your driving this car after the bleed job and then get the soft pedal I would check the runout on your rotors. If you have too much runout you will suck air in by the seals with no leak to the out side, you should have no more than .002 runout and that would be on the verge of to much, check them out!
