Brakes pulling right-sometimes--advice please!!
Thread Starter
Melting Slicks
Joined: Aug 1999
Posts: 3,123
Likes: 13
From: Hollywood, Florida
Brakes pulling right-sometimes--advice please!!
Under 30 MPH, my '71 w/ power brakes stops straight and true, but over 30, it pulls right---slightly under normal braking, and much harder to the right under heavy braking. Tires are fairly new, no uneven wear---inflated to 30PSI all around.
The front calipers were recently replaced with quality rebuilt parts from a supporting vendor. The 2 front hoses, the brake booster and the master cylinder were also relaced at the same time. The pedal is firm---no air as far as I can tell.
IDEAS PLEASE
Could worn control arm bushings or other front end parts cause this condition?
As always....Any suggestions are always appreciated
The front calipers were recently replaced with quality rebuilt parts from a supporting vendor. The 2 front hoses, the brake booster and the master cylinder were also relaced at the same time. The pedal is firm---no air as far as I can tell.
IDEAS PLEASE
Could worn control arm bushings or other front end parts cause this condition?
As always....Any suggestions are always appreciated
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Suspension and/or brakes, and be damn sure to replace the brake hoses...they can shring internally and block pressure release of the brake fluid, clamping the caliper tighter than normal....making very uneven braking.....same as if you had a defect in one caliper, only worse as your are burning up the clamped caliper by driving it dragging like that....
suspension will shift if say you dropped an alignment shim....I use RTV black to glue mine in position so if the bolt loosens up, the shims dont' drop out, so all I need to is tighten it when the clunk noise comes around....
check the lower A arms and ball joints too....and steering linkage....
do not drive it much untill you get to the bottom of this....
suspension will shift if say you dropped an alignment shim....I use RTV black to glue mine in position so if the bolt loosens up, the shims dont' drop out, so all I need to is tighten it when the clunk noise comes around....
check the lower A arms and ball joints too....and steering linkage....
do not drive it much untill you get to the bottom of this....
Thread Starter
Melting Slicks
Joined: Aug 1999
Posts: 3,123
Likes: 13
From: Hollywood, Florida
Thanks all !
Even though the hoses are new....I might replace the right 1 just to be 100% sure that isn't the culprit..Naturally, that will mean I have to rebleed, so that should then rule that out
I'll look around and re-inspect the front end parts while I'm back in there...
Even though the hoses are new....I might replace the right 1 just to be 100% sure that isn't the culprit..Naturally, that will mean I have to rebleed, so that should then rule that out
I'll look around and re-inspect the front end parts while I'm back in there...
Drifting
Joined: Oct 2005
Posts: 1,331
Likes: 479
From: Appleton Wisconsin
I had the same thing on my 70, I replaced everything and it still pulled to the right under hard braking. I took the proportioning valve out and noticed the right port had a bigger ID than the left, I drilled the left port to match the right and now it doesn't pull. I don't know if thats the cause of yours check everything else first.
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Did you get it fixed ?
Burning Brakes
Joined: Mar 1999
Posts: 1,047
Likes: 3
From: CA
I had a similar problem on mine. I too had rebuilt calipers, new hoses, new brake lines, new fluid, new shoes and new master cylinder from a supporting vendor. It turns our one of the hoses began to disentegrate and all this black crud enterred the caliper. The vendor replaced under warranty although I did buy a different brand of brake hose just to be sure it didnt happen again.
C6 the C5 of tomorrow
Joined: Nov 2000
Posts: 6,665
Likes: 2
From: Twin Cities Minnesota
Make sure you do your testing on a smooth flat CONCRETE road.
Asphault roads frequently will be rutted and cause the car to pull.
Other than that, start replacing parts again!
( start withthe cheap ones ;-)
Keith
Asphault roads frequently will be rutted and cause the car to pull.
Other than that, start replacing parts again!
( start withthe cheap ones ;-)
Keith
Thread Starter
Melting Slicks
Joined: Aug 1999
Posts: 3,123
Likes: 13
From: Hollywood, Florida
Couldn't agree more!!!!
Drifting
Joined: May 2001
Posts: 1,651
Likes: 13
From: Holly MI
When was the last time you had your car aligned? A bad alignment can cause the car to pull under braking. And yes, it is possible for a car to track straight with a bad alignment. You could also check the brake pressure in each caliper to make sure they are same. It might be cheaper than replacing parts.
Ken
Ken
Thread Starter
Melting Slicks
Joined: Aug 1999
Posts: 3,123
Likes: 13
From: Hollywood, Florida
I honestly have not had very much time to dedicate to the Vette (I know...bad boy) but I have done and noticed the following
1) RT lower control arm bushings look pretty well shot
2) Replaced both front hoses again--just to be sure and pressure blead system
3) I have a front end kit and new VBP springs that I will install one of these days
Working full time, having 3 kids and the wife, doing house repairs/maint, and so on takes up 90% of my time, so .......I'll keep you posted as I get more done when I have more time.
1) RT lower control arm bushings look pretty well shot
2) Replaced both front hoses again--just to be sure and pressure blead system
3) I have a front end kit and new VBP springs that I will install one of these days
Working full time, having 3 kids and the wife, doing house repairs/maint, and so on takes up 90% of my time, so .......I'll keep you posted as I get more done when I have more time.