Go Back   AstinaGT Forums > Performance & Technical > Suspension & Wheels

Reply
 
Thread Tools Display Modes
Old 13-07-2016, 04:37 PM   #1
Noble323
E74A
 
Noble323's Avatar
 
Join Date: Nov 2004
Location: Sydney
Car: SP20
Posts: 1,248
Front brakes making noise - SP20

Alright.
When I brought the car a while ago brakes weren't brillant and pretty sure disc was warpped, so I brought DBA front pair disc's and Bendix GCT pads.

Was installed about 3 to 4 weeks ago but I noticed when I slowly brake it makes a horrible sound if I'm lightly braking and even normal braking but if I brake hard I don't really hear it.

Could it be maybe the calipers itself ? Or ?
Any help would be great.
Noble323 is offline   Reply With Quote
Sponsored Links
Old 13-07-2016, 06:42 PM   #2
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Edit: Did you wash off the PROTECTIVE coating on the new discs ????

In "theory" discs should be machined before new pads are installed
to remove any gouges / glazing etc...

Next the "theory" in bedding in the pads requires you to get to 60kph
& brake FIRMLY for a second - Without stopping & repeat say 4 more
times to "bed" the pads in....

Supposedly modern pads don't need to be bedded in but why not go old school ? Can't hurt - lol

I'd pull the pads out and on a flat surface rub them on some 240 grit sand paper, re-install & bed them in if it was my call..
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 13-07-2016, 07:15 PM   #3
Noble323
E74A
 
Noble323's Avatar
 
Join Date: Nov 2004
Location: Sydney
Car: SP20
Posts: 1,248
Yes disc were cleaned with brake cleaner and pads are the no bedding but I bed them alittle to help.
I've done our camry and its been perfect and the mazda not great......

Could it be a piston on the calipers sticking ? I know I've done it right installing the disc and pads. I've done ot many times and no problems.
Noble323 is offline   Reply With Quote
Old 13-07-2016, 07:29 PM   #4
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Simple solution then pull apart both calipers, rub internals with
1200 w&d & put kits through them - That should do the trick !
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 13-07-2016, 07:41 PM   #5
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Or just pull them down, clean out / reassemble & pray !
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 16-07-2016, 10:19 AM   #6
HAIGHIE
Senior Member
 
HAIGHIE's Avatar
 
Join Date: Jun 2010
Location: wollongong
Car: 99, BJ 323 astina hatch
Posts: 1,506
Problem is the Bendix pads ��

What kind of noise is it ?? Will help a lot in trying to solve the issue.

Is it a high pitched squeal or a grinding type noise
__________________
Cars .. 1: 241kw Turbo 1999 BJ 323 Astina . 2: 1983 ke70 Corolla.
3: 2011 PK Ranger Wildtrak (tow car )

HAIGHIE is offline   Reply With Quote
Old 16-07-2016, 11:27 AM   #7
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
BENDIX sucked dog dick royally back in 1984 - Worst pads EVER !!
Thought they would've been better 32 years later ?
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 17-07-2016, 01:16 AM   #8
Noble323
E74A
 
Noble323's Avatar
 
Join Date: Nov 2004
Location: Sydney
Car: SP20
Posts: 1,248
Quote:
Originally Posted by HAIGHIE View Post
Problem is the Bendix pads ��

What kind of noise is it ?? Will help a lot in trying to solve the issue.

Is it a high pitched squeal or a grinding type noise

Its more of a grinding sounds not a high pitched squeal.

When I brought the car I noticed the front disc was warpped and after a couple months noticed the pads making a grinding sound, looked at pads still had abit of life in them but changed the discs and pads.

The wrapping issue is fixed but the grinding sound now sounds worse.

I replaced our camry pads with the same brand pads bendix and its perfect no noise or anything thats why I got bendix for the sp20

Already called bendix and honestly the guy I spoke it was no help and tryd to keep making excuses that I did it wrong, as soon I suggested maybe pads have a fault he said any pads that they sell have not faults or defect (yeah right, If you can buy genuine parts and they can be faulty im sure the pads can)

Anyways... I was more worried if they werent braking properly but im sure they are.
Noble323 is offline   Reply With Quote
Old 17-07-2016, 10:17 AM   #9
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Do these Bendix pads have tapered "lead ins" on the mating surface or just flat ?
Better thought out & designed ones these days do
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 17-07-2016, 12:04 PM   #10
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Thumbs up

Pic for reference

__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 17-07-2016, 04:35 PM   #11
Cosmo Dude
コスモ
 
Cosmo Dude's Avatar
 
Join Date: Dec 2002
Location: Location: Vic
Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD
Posts: 7,884
Could it be the backing plate behind the disk was disturbed and is now rubbing on the disk?
__________________
My 'stina Hatch
Cosmo Dude is offline   Reply With Quote
Old 17-07-2016, 06:18 PM   #12
Jazzy
Junior Member
 
Jazzy's Avatar
 
Join Date: Nov 2015
Location: Australia
Car: BJII SP20 Astina 5spd
Posts: 88
Are the 'M' springs (#4) seated properly? They must be seated correctly for the pads to be pushed back properly. And make sure the guide plates (#6) are also seated properly.




Grinding noise could also be wheel bearings.
Jazzy is offline   Reply With Quote
Old 19-07-2016, 12:32 AM   #13
Noble323
E74A
 
Noble323's Avatar
 
Join Date: Nov 2004
Location: Sydney
Car: SP20
Posts: 1,248
Thanks guys for the feedback.

I dont think its the backing plate because mostly does it now when im close to stopping and other time its fine.

Those m springs are seated properly and those guide brackets/plate are also seated properly, I know its not wheel bearing, haha I know that annoying sound, its definitely something, im ganna take them out and double check everything and if its still doing the same then its probably safe to take it to a braking place.

Will update once I figure out.
Noble323 is offline   Reply With Quote
Old 23-07-2016, 11:04 AM   #14
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Question

So what's the outcome here.. Sticking calliper pistons ?
Loose securing bolt ? Crappy Aussie made pads ????
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 05-08-2016, 01:24 PM   #15
Noble323
E74A
 
Noble323's Avatar
 
Join Date: Nov 2004
Location: Sydney
Car: SP20
Posts: 1,248
Update:
Well not much of a update because I haven't had a chance to inspect, but what I found is after my last post we haf a few days rain and in the rain I didnt really hear it, thought I hear something at 2 occasion but nothing that was noticeable.

And when rain stopped its still doing it but only just before I come to a stop (rolling like 5km to stop) after driving for a while, so im not worried about it at the moment brakes are working fine, so maybe disc are getting to hot or pads are crap.

Still ganna look into them because it couod be something else but when I get time.
Noble323 is offline   Reply With Quote
Old 05-08-2016, 02:00 PM   #16
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Did you buy RDA (crap) or good DBA rotor/discs ?
I should've pointed that out way earlier - lol
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 16-08-2016, 07:44 PM   #17
HAIGHIE
Senior Member
 
HAIGHIE's Avatar
 
Join Date: Jun 2010
Location: wollongong
Car: 99, BJ 323 astina hatch
Posts: 1,506
The rotors arn't going to make the noise RDA / DBA / Protec

As long as they were either new or machined thats not going to be your issue,
The brand of a rotor really doesn't matter to much on a daily street car.

I'm saying its the pads. But as you said the brakes are working fine so its not a huge issue, just the fact it might be annoying.
__________________
Cars .. 1: 241kw Turbo 1999 BJ 323 Astina . 2: 1983 ke70 Corolla.
3: 2011 PK Ranger Wildtrak (tow car )

HAIGHIE is offline   Reply With Quote
Old 16-08-2016, 07:49 PM   #18
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Cheap soft discs CAN & WILL heat up and GLAZE with the BEST pads available..
Just sayin'
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Old 16-08-2016, 08:12 PM   #19
HAIGHIE
Senior Member
 
HAIGHIE's Avatar
 
Join Date: Jun 2010
Location: wollongong
Car: 99, BJ 323 astina hatch
Posts: 1,506
Not his issue!! He has DBA rotors anyways as stated in the first post!!
As you would probably know if his rotors were "glazed" then they would be squeeling due to the very smooth suface as the pad finds it harder to create friction.

Not making a harsher almost like grinding noise.
Deffinatley not within the first few 1000kms of freash pads and freash machined surfaced rotors.
__________________
Cars .. 1: 241kw Turbo 1999 BJ 323 Astina . 2: 1983 ke70 Corolla.
3: 2011 PK Ranger Wildtrak (tow car )

HAIGHIE is offline   Reply With Quote
Old 16-08-2016, 08:22 PM   #20
MadazInBris
AstinaGT Regular
 
MadazInBris's Avatar
 
Join Date: May 2016
Location: Brisbane
Car: '96 Astina, '90 BG, '91BG, 92 SP BG & a partridge in a pear tree..
Posts: 296
Well unless he youtubes this sound we are all seconding guessing then aren't we ?
Ahhhhh I love keyboard warriors - all huff n bluff until called out...
__________________
Speed is subjective to only how far you keep your right foot down..
MadazInBris is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time now is 05:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
2001- 2010 AstinaGT