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Race Brakes Sydney Street and race performance pad / rotor combinations as well as brake upgrades and Exedy clutch kits. Website Link |
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#1 | ||
Regular Member
Join Date: Jun 2010
Posts: 66
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Hi Matt,
I Bought some DBA 4000 T3 rotors and hpx pads for au series 2 front and rear from GSL rallysport and I am getting some vibrating/ buzzing when braking at light medium pressure and above. Hubs are clean,it seems under light pedal preasure all is ok it is only when I apply more brake pedal preasure say going down a hill or braking from 80 kmh for a set of lights that I feel the buzzing type of feeling through the brake rotors causes a slight vibration through the dash board as well. Is related to the slots or pads? There is no way that ABS is cutting in. Hubs are perfectly clean What are your thoughts. Hope you dont mind asking as I did purchase from GSL Rallysport . Thanks |
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#2 | ||
2002 XR6 VCT Owner
Join Date: Mar 2011
Location: Sydney
Posts: 51
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The same thing has been happening on My Turbo MX-5.
I bought my rotors from race Brakes. Have DBA 4000 T3, and Carbotech XP10 brake pads, and they have caused vibrations since going in. Another guy, with same car, same rotors and same pads that I race with is having the same problem. I have driven other MX-5's with the older 6x6 4000's and Carbotech pads on the track without an issue so I'm blaming the rotors still. I have contacted Carbotech, but have yet to contact DBA. I'll gladly go back to the old 6x6 Wiper slot design if I can find them anywhere still in stock. Just one question sjako, are the QFM HPX pads a ceramic based pad? I have only heard people complain about these rotors with ceramic based bads. These sought of pads create a transfer layer on the disc, and with this slot design, I cannot get a even layer on the disc. My Carbotech XP10's, are a Ceramic based race pad.
__________________
SOLD: 2002 AU3 Falcon XR6 VCT on Impco Mixer Gas Factory Leather and Towbar Stock 17' rims Perfect After Fixing Myself Air Hog Air Filter + 2.5 Inch Sterling Mandrel Bent Exhaust + Supercheap Oval Tip. Carbon Fibre Style Vinyl Wrapped Roof and Boot |
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#3 | ||
Regular Member
Join Date: Jun 2010
Posts: 66
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Thanks fopr the reply, Im not sure if they are ceramic but I have been told the pad material does build up on the rotor. Hopefully Matt may have an answer.
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#4 | ||||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
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Quote:
Quote:
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__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#5 | ||
Regular Member
Join Date: Jun 2010
Posts: 66
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Thanks very much for the reply. It was a reasonably quick process but is getting worse, definetely no high speed braking, bedded them in as per instructions it just seems the longer and harder the brake pedal is applied especially a on a decline, the more intence the buzzing type vibration occurs. When very light braking to a set of lights you hardly feel anything but you are aware that it is not entirely smooth and the longer you brake for you can definetley feel it more say from 80 or 90 kms down.
I wonder if the pads are not as suitable to this type rotor as it builds up pad layer around the slots. Again thaks for your help. |
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#6 | ||
2002 XR6 VCT Owner
Join Date: Mar 2011
Location: Sydney
Posts: 51
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You should feel it at trying to go from 190 down to 70-80 for Turn 2 at Eastern Creek!!!
I am putting brake ducts in the car to see if it is temperature related, as I have triggered the highest paint marking (Red to white, to burnt off) on the disks. Although with the 6x6's and Hawk Blues I burnt the marking off as well, but had silly wear rates instead. Matt, do you have or know where you can get thermographic paint, as I want to see if the ducting actually works.
__________________
SOLD: 2002 AU3 Falcon XR6 VCT on Impco Mixer Gas Factory Leather and Towbar Stock 17' rims Perfect After Fixing Myself Air Hog Air Filter + 2.5 Inch Sterling Mandrel Bent Exhaust + Supercheap Oval Tip. Carbon Fibre Style Vinyl Wrapped Roof and Boot |
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#7 | ||||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
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Quote:
Quote:
__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#8 | ||
BEN
Join Date: Jun 2011
Location: Perth WA
Posts: 4,875
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Just a thought maybe the bushes in the front end.
__________________
My Thread. The new whip: 2014 FGX XR8 Auto in victory gold. Mods : BMC air filter, 1500cc injectors, Walbro 485, 58mm kpm snout, kpm intercooler, 35% front and 20% rear tint, pedders supercar coilovers, whiteline sway bars, Phillips HIDs, lenso d1r wheels. 331rwkw. 12.7 sec stock as a rock with a passenger. Now with 620rwhp ready to run the 10 built zf, built tailshaft, corn juice all to come. The old rig: 2008 FG XR8 Auto in dash green with a tonne of mods to make 311rwkw. |
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#9 | ||
Regular Member
Join Date: Jun 2010
Posts: 66
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Just had the front end checked out the other day at pedders, all bushes and joints are ok except I need new front shockers which were on the replacement list. I am starting to think it is a build up of pad material around the slots. I sent a message to DBA on Friday and had a call from the National accounts manager same day but missed the call. I will ring him on Monday to discuss the issue although I explained it pretty well in the email. Matt what pads are available that dont build up pad material on the rotors and would the HPX pad layer wear off in time if they were not skimmed up.
Thanks |
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#10 | |||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
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Quote:
__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#11 | ||
Regular Member
Join Date: Jun 2005
Posts: 135
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I'm also having the same issue after installing DBA T2 slotted front rotors and EBC Red Stuff pads (Ceramic).
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#12 | |||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
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Quote:
FYI - Just make sure when changing rotors that the wheel bearing hubs are cleaned of rust and debris before fitting the rotors on so a flat surface is visible.
__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#13 | ||
BA Falcon
Join Date: Aug 2012
Posts: 39
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I'm kind of intrigued by this thread in that I am currently running DBA T2's and Bendix Ultimates, but was considering running QFM HPX with the T2's. I was under the impression that the latter combo was a good choice in that the QFM pads don't generate the same dust levels as the Ultimates but perform at about the same level but now its maybe sounding like this isn't the case?
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#14 | ||
Regular Member
Join Date: Jun 2010
Posts: 66
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May of cured it temporaily, Spoke to Kerry Perkins from DBA I said I was running HPX pads and he asked whether they had a chamfered edge, As we all know they dont, he asked me to remove the pads and file a chamfer on the leading and trailing edge of the pad, I just finished doing the front took the car for a drive and the roughness and vibration is almost gone. So I dont think I will be using a non chamfered pad on slotted rotors agin. Not sure if mine is an isolated problem. I will give it a week and update this tread again. See if the vibration returns. If it does not reurn I will do the rears.
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#15 | ||||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
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Quote:
Quote:
__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#16 | ||
BA Falcon
Join Date: Aug 2012
Posts: 39
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Any chance you could give me a quote for rear axle DBA T2 slotted for a BA Falcon (DBA505S I think) and some matching qfm HPX pads?
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#17 | |||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
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Quote:
$280 plus freight or you can pick up thanks.
__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#18 | ||
BA Falcon
Join Date: Aug 2012
Posts: 39
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Thanks Matt, are you open Saturday and should I ring ahead to check stock?
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#19 | |||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
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Quote:
Yes until midday and i have stock atm
__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#20 | ||
BA Falcon
Join Date: Aug 2012
Posts: 39
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Thanks again Matt, looks like I'm stuck working tommorrow but plan on trying to get out to you next w/e.
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#21 | |||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
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Quote:
__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#22 | ||
Regular Member
Join Date: Jun 2010
Posts: 66
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Just updating my last reply. Vibration and buzzing have returned in about 600 km, It seems to be the leading front edge of the pads that are causing the problem, for some reason the leading front edge of the pad seems to be getting roughened up as the pad passes over the slot. Trailing edge is smooth.
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#23 | ||
Regular Member
Join Date: Jun 2005
Posts: 135
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It's very disappointing, DBA rotors are not cheap and you think you are paying extra for quality. I ran a similar combo back a couple years ago when I had my Calais LS1 - DBA slotted rotors with EBC Greenstuff pads. Soon after installing them the shudder came. I then sold the car so didn't think much of it.
Last car was a J31 Maxima and I used RDA slotted and Bendix Ultimates - beautiful combo, no issues. Now I have issues with DBA and Redstuff on my XR6T. I don't think you can blame the pads. Maybe I should pull the rotors off and just put on RDA slotted ones. They are much cheaper too... |
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#24 | |||
Race Brakes Sydney
Join Date: Feb 2006
Location: SYDNEY
Posts: 3,613
|
Quote:
__________________
MATTHEW PEARCE
RACE BRAKES SYDNEY = When you want it to stop Street to track is what we expertise in Phone 02 9609 1101 sales@racebrakessydney.com.au www.racebrakessydney.com.au |
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#25 | ||
Regular Member
Join Date: Jun 2010
Posts: 66
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Hi Matt, Thanks very much for your replies and your assistance especially as I got the parts from GSL rallysport. I am sure that DBA rotors and HPX pads are very good products, unfortunately they are not in tune with my car. I will try and sort it out with DBA and hopefully come up with a amicable solution. Thanks Again.
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#26 | ||
2002 XR6 VCT Owner
Join Date: Mar 2011
Location: Sydney
Posts: 51
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You know what, I have not posted for years after selling my Falcon but google led me back to this old thread 8 years later.
I believe this thread needs an update as I still have this problem with T3's. BTW, I have never actually bothered following up with DBA about this. This time on a 2009 Mazda MX-5 with DBA 4000 T3 rotors. This time with Winmax W3 pads. Same buzzing, same transfer layer issues as the Carbotechs from 8 years ago. Sorry to say it but I have avoided DBA T3 rotors like the plague since my last experience and only am suffering again because this car came with the rotors when I bought it last year. I have found some pads work well with the T3's but are generally the more abrasive type Carbon Metallic pads. OEM pads tend to work as well. It always seems to be pads that need a transfer layer that have issues with the T3 slot design. I have actually been running DBA 4000 (DBA HD) Plain rotors on the other 2004 MX-5 ever since with no problems for track use with various different pads. Very curious if others have experienced this issue since this was first raised.
__________________
SOLD: 2002 AU3 Falcon XR6 VCT on Impco Mixer Gas Factory Leather and Towbar Stock 17' rims Perfect After Fixing Myself Air Hog Air Filter + 2.5 Inch Sterling Mandrel Bent Exhaust + Supercheap Oval Tip. Carbon Fibre Style Vinyl Wrapped Roof and Boot |
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