Fordmods Logo

BA Brake Shudder 

 

Page 2 of 3 [ 31 posts ] Go to page Previous  1, 2, 3  Next

 
 Post subject: Re: BA Brake Shudder
Posted: Tue Jun 15, 2010 10:05 pm 
Parts Gopher
Offline
User avatar

Age: 40

Posts: 76

Joined: 29th Nov 2007

Ride: turbo ed, xr6 turbo

Location: cairns
QLD, Australia

ABC runout tool? I use a magnetic base and stand, and a dial indicator. Base around $55, dial indicator $70-$220
No, brake dust covers won't have anything to do with brake shudder as they are not part of the hub. A bent cover may cause a normal driving shudder as it might stop the wheel from being on square. But u would see that on installing the wheel.
Never heard of correction shims.
It's great that ur having a go at it but for the time and money ur spending, and to buy measuring equipment is it worth going to a brake specialist to get them to diagnose. They can also look at bushes, ball joints, etc while u wait.

 

_________________

If u can't fix it with a hammer, it's an electrical problem

Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Tue Jun 15, 2010 11:13 pm 
Fordmods Newbie
Offline

Age: 31

Posts: 11

Joined: 24th May 2010

Ride: Ford BA Falcon XR6

Location: Sydney
NSW, Australia

fatnsticky wrote:
ABC runout tool? I use a magnetic base and stand, and a dial indicator. Base around $55, dial indicator $70-$220
No, brake dust covers won't have anything to do with brake shudder as they are not part of the hub. A bent cover may cause a normal driving shudder as it might stop the wheel from being on square. But u would see that on installing the wheel.
Never heard of correction shims.
It's great that ur having a go at it but for the time and money ur spending, and to buy measuring equipment is it worth going to a brake specialist to get them to diagnose. They can also look at bushes, ball joints, etc while u wait.


i think i might just do that mate. instead of paying 75 buks for a tool, might as well pay that towards the mechanics and get them to pin point the cause.

Appreciate everyones help. once i find the cause i will post here just for any one elses future reference.
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Wed Jun 16, 2010 7:21 pm 
Parts Gopher
Offline
User avatar

Age: 40

Posts: 76

Joined: 29th Nov 2007

Ride: turbo ed, xr6 turbo

Location: cairns
QLD, Australia

good luck with it all Ron :D

 

_________________

If u can't fix it with a hammer, it's an electrical problem

Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Mon Jul 19, 2010 12:59 am 
Fordmods Newbie
Offline

Age: 31

Posts: 11

Joined: 24th May 2010

Ride: Ford BA Falcon XR6

Location: Sydney
NSW, Australia

ok...being stubborn and insisting that i try everything i can myself before i see a specialist, i purchased the rotor runout dial tool.

The front rotor runout measured 0.06mm. After swapping the rotor 1-2 studs along, i managed to get both the front rotors down to 0.03mm and the rear rotors to 0.02mm. Shudder was significantly reduced but i still experiance shudder. The Ford workshop manual says the front can have up to 0.08mm runout and 0.05mm for the rear if i recall correctly. So im well below the specificiation, but still have shudder.

Are my runout tolerances acceptable?

I have 4 brand new tyres on... so i guess side wall issues are out of the equation now. i will wait to hear opinions if my runout is acceptable and go from there for the next step to tackle.

appreciate your help.
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Mon Jul 19, 2010 1:40 am 
Getting Side Ways
Offline
User avatar

Age: 53

Posts: 1072

Joined: 6th Jul 2006

Gallery: 13 images

Ride: BA Falcon

Power: 106 rwkw

Location: Craigmore
SA, Australia

I would try swapping front wheels to the rear and visa versa..... possible could be a bent rim???

worth a try at least to discount it..... a wheel out of balance or bent will most like show up in 90kmh range, dunno why, it just does for some reason....

when they balanced the rims did you see the rims running on the balancer???

 

_________________

2003 BA Falcon Egas Taxi Pack - XR Replica
Tpak MKII Build Thread

1984 ZL Fairlane
The Project

Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Mon Jul 19, 2010 10:58 pm 
Fordmods Newbie
Offline

Age: 31

Posts: 11

Joined: 24th May 2010

Ride: Ford BA Falcon XR6

Location: Sydney
NSW, Australia

AU99,

i got the new tyres put on last weekend and balanced. I also got wheel alignment after.

I saw the guy put the wheels on the balancer but i didn not pay much attention. Guy did the alignment at another shop and it was all good pretty much apart from the rear being 1.2 mm out.

I will swap and put on my dads ED fairmont 15" rims on when i get a chance and see if that eliminated the issue. Trial and error is the key i guess.

cheers
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Tue Jul 20, 2010 5:56 pm 
Parts Gopher
Offline

Age: 41

Posts: 83

Joined: 15th Feb 2010

Ride: FG 2010 XR8 Ute

Location: Perth
WA, Australia

all this time and money.
it would of been better to machine your discs in the 1st place and be done with it. if it still shudders after that you may have some loose suspension/steering/brearings
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Fri Jul 23, 2010 2:38 am 
Fordmods Newbie
Offline

Age: 31

Posts: 11

Joined: 24th May 2010

Ride: Ford BA Falcon XR6

Location: Sydney
NSW, Australia

i have already replaced all 4 rotors to new, and brake pads.

ill check suspension.
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Fri Jul 23, 2010 3:38 am 
Getting Side Ways
Offline

Age: 25

Posts: 624

Joined: 7th Jul 2008

Location: Perth
WA, Australia

dont try putting ED or 15" wheels on

ED wheels will not fit and 15s will not clear the brakes

i also had this problem when i purchased my BA XR6 and i know what an annoyance it can be.

i purchased DBA 4000 series Slotted Rotors for the fronts and DBA street series Slotted Rotors for the rear all with Bendix General CT pads (this was the same setup i chose for dads BF XR6 3 years ago and he had 3 years of 0 brake issues)

i paid my local mechanic $50 to whack it all on and ive had 0 shudder since. sounds like a buckled rim to me, i hit a pothole coming home from work last week and buckled a rim its in getting repaired at the moment
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Fri Jul 23, 2010 7:40 am 
Getting Side Ways
Offline
User avatar

Age: 64

Posts: 3448

Joined: 11th Jan 2009

Ride: BA Falcon XT

Location: Smithfield
NSW, Australia

One other thing it COULD be, the front Hubs, when worn they can cause shuddering.
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Mon Sep 20, 2010 9:45 am 
Fordmods Newbie
Offline

Age: 31

Posts: 11

Joined: 24th May 2010

Ride: Ford BA Falcon XR6

Location: Sydney
NSW, Australia

hi all,

just thought id post my solution, incase someone does a search in the future they will have a possible cause.

I started scratching my head and considering maybe my brand new front rotors were not machined properly from the factory or the new bendix pads were not good.

I machined my front rotors replaced the brake pads with Australian Disc Brakes Performance (which is similar compound as bendix) except it cost half the price and i no longer have brake shudder. Problem solved...faulty front pads or disc rotor.
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Tue Sep 21, 2010 10:26 pm 
Parts Gopher
Offline

Age: 36

Posts: 78

Joined: 15th Jun 2010

Ride: XD Fairmont Ghia 351

Location: Blue Mountains
NSW, Australia

Hey guys, I would check the booster.
BA's had a problem with booster rod tolerance causing the brakes to apply at 80-100kmh.
A reco booster will fix this. Cheers Stu
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Tue Sep 21, 2010 10:39 pm 
Fordmods Junkie
Offline
User avatar

Age: 38

Posts: 5051

Joined: 5th Nov 2004

Ride: Kia Rio - 1.4L Auto

Power: 238 rwkw

Location: Westside
VIC, Australia

ronsta86 wrote:
hi all,

just thought id post my solution, incase someone does a search in the future they will have a possible cause.

I started scratching my head and considering maybe my brand new front rotors were not machined properly from the factory or the new bendix pads were not good.

I machined my front rotors replaced the brake pads with Australian Disc Brakes Performance (which is similar compound as bendix) except it cost half the price and i no longer have brake shudder. Problem solved...faulty front pads or disc rotor.


That prob wont fix it. Chances are it will come back.

http://www.fordforums.com.au/showthread.php?t=11308077 <-- A good read.
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Tue Sep 21, 2010 10:54 pm 
Stock as a Rock
Offline

Age: 62

Posts: 167

Joined: 3rd Jul 2009

Ride: 2002 AU Fairlane Sportsman

Location: Narellan
NSW, Australia

Hi ronsta86, the painter at my work had a similar problem and his calipers had a rattle as well. After a lot of hassling the local Ford dealer, they finally changed over one caliper and inserted a sleeve kit into the hole where the mounting bolts go though the caliper to the stub. It is cured at the moment but he has spoken to a few other BA owners and they have the same issue. It might help, just get a ruber mallet and tap the calipers. If they rattle it might be the worn bolts.
Top
 Profile  
 
 
 Post subject: Re: BA Brake Shudder
Posted: Fri Oct 29, 2010 12:17 am 
Stock as a Rock
Offline
User avatar

Age: 46

Posts: 144

Joined: 24th Sep 2009

Ride: Bionic BA MkII XR6

Power: 175 rwkw

Location: Perth
WA, Australia

Stu5766 wrote:
Hey guys, I would check the booster.
BA's had a problem with booster rod tolerance causing the brakes to apply at 80-100kmh.
A reco booster will fix this. Cheers Stu


Sounds exactly like my problem. Driving along in that speed range and no brakes applied - get the wobbles. Very annoying.
I have the FTG upgraded brakes up front - so I know/hope they are not warped.

In fact I know they aren't because Ford adjusted it but now it is back! It was good for a while after they did it.

So how much is a reco booster worth and how difficult to fit?

 

_________________

BIONIC 2005 BA Mk2 XR6 - XR8 Snorkle - Typhoon 2nd CAI - K & N Panel Filter - polished BBM intake - polished ceramic coated Pacemaker 4490 headers - Magnaflow 3.5" high flow Cat - Full mandrel stainless exh syst - 4speed SSS -BPT Custom tune - 20% UDrive - XR8 Calipers/rotors - 175 rwkw

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 2 of 3  [ 31 posts ]  Go to page Previous  1, 2, 3  Next

Who is online

Users browsing this forum: No registered users and 11 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Fri Dec 15, 2017 6:29 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names