Re: Last minute Brake issue before Carlisle.. ???
[Re: mymcodebee]
#2518887
07/07/18 04:31 PM
07/07/18 04:31 PM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
(1) too much booster threaded rod clearance (but I am assuming it was good before & there was no MC change I am assuming). (2) Air (3) bad MC (4) linings spooned way loose. I'm thinking (2) or (3)
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Last minute Brake issue before Carlisle.. ???
[Re: mymcodebee]
#2518891
07/07/18 04:44 PM
07/07/18 04:44 PM
|
Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
|
I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
|
Fired Car up for first road test and we have a brake issue.. essentially pedal pushes to floor when booster is under vacuum with essentially no pedal pressure. Essentially no brakes. Lines are bled well. Guessing bad boaster but I expected pedal to be hard as a rock with bad booster??? Really need some thoughts as I hate brake work!! We have a booster ordered but won’t be here till Tuesday. Pedal has plenty of pressure when vacuum hose removed. 70 Cuda with factory front disks. Is this a sudden event, or have you changed/adjusted any components then have experienced an issue?
|
|
|
Re: Last minute Brake issue before Carlisle.. ???
[Re: 71birdJ68]
#2518902
07/07/18 05:04 PM
07/07/18 05:04 PM
|
Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
|
About to go away
Joined: Sep 2007
Posts: 14,889
up yours
|
Go on youtube and look for the Ramman, he has a video that tells which part is bad. Do a search on "ramman" on this site. Read the posts. Got to FABO, do the same search, read the posts. Then decide what you want to do in regard to anything from the Ramman, even if it's free.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
|
|
|
Re: Last minute Brake issue before Carlisle.. ???
[Re: mymcodebee]
#2519006
07/07/18 10:45 PM
07/07/18 10:45 PM
|
Joined: Aug 2006
Posts: 213 fresno
hyefatman
enthusiast
|
enthusiast
Joined: Aug 2006
Posts: 213
fresno
|
My experience with a hard pedal and air noise is a broken diaphragm in the power brake booster or your vacuum hose is not connected or has a hole.
Last edited by hyefatman; 07/07/18 10:46 PM.
|
|
|
Re: Last minute Brake issue before Carlisle.. ???
[Re: mymcodebee]
#2519068
07/08/18 02:01 AM
07/08/18 02:01 AM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
Pedal is not really hard which is what I was expecting. Pedal depressed easily to the floor with a wooosh of air sound down under dash by booster... also I just tried driving with booster vacuum unhooked in garage and you are correct pedal is hard to push and barely stops. It’s not air in lines as we’ve bled them into oblivion. Just looking for someone to corfirm they think it may be the booster over a master cylinder issue.. I hate to say it but it sure sounds like air (unless the rod is screwed in way too short). What I would do is cap the MC with a pair of brass plugs from your parts house (make sure you get the right thread pitch, iirc one is an oddball but I might be wrong) & cap the MC & with the vacuum hose hooked up/eng idling the pedal should be hard with virtually no travel (applies to manual brakes also). Do keep us updated, we love the toughies! EDIT I've had good boosters that I could hear a decent whoosh of air when pedal pressed. MORE EDIT I'm thinking the booster rod is screwed in too short
Last edited by RapidRobert; 07/08/18 02:38 AM. Reason: bored
live every 24 hour block of time like it's your last day on earth
|
|
|
|
|