NOW WITH PICS! Pagid Pad Disintegration and Clicking Noise (2 parter)
#1
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I did a quick search, didn't turn up anything regarding my clicking noise Part II - so you get Part I for free!
Part I:
I have been running pagid yellows for a while, but they tend to become worthless below 1/3 of a pad. I usually swap them at 1/3 to be on the safe side. I went out to MSR this weekend with just under 1/2 a pad remaining (inside and outside) on all 4 corners.
During one session, I had one front pad chunk horrbily - to the point it was literally disintegrating under braking - and was eaten away to the backing plate. It was so disintegrating/chunking so fast that under braking it caused the car to turn. Keep in mind that this was just 1 pad on the front driver's side (the outer pad), the inner pad still had about 1/3 remaining - and although it was chunking, it was not disintegrating. Both rear pads still had more than 1/3 remaining. [pics posted.] As expected, the rotor was also ruined, but they were almost to the point of being heat cracked out anyway (OEM cross drilled). But if I was running 2 piece or something else relatively expensive, I would have been really PO'd.
I was always aware of the chunking and low pad issue, but didn't realize it could fall apart like a granola bar. Word to the wise: keep an eye on your Pagid Pads - and when they start flaking, pay extra attention to them.
Part II:
So I upgraded to PFC-01 in the front / PFC-97 in the rear (on recommendation of the track support gurus - we'll see how this turns out).
However, now I have a clicking noise when I tap the brake. My guess is that when there is no pressure in the line, the pads back off the rotor just a bit, and when you tap the brakes they are pushed onto the rotor causing the clicking noise I hear. Maybe the spring clip isn't tight. Dunno.
Has anyone experienced this?
-td
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Part I:
I have been running pagid yellows for a while, but they tend to become worthless below 1/3 of a pad. I usually swap them at 1/3 to be on the safe side. I went out to MSR this weekend with just under 1/2 a pad remaining (inside and outside) on all 4 corners.
During one session, I had one front pad chunk horrbily - to the point it was literally disintegrating under braking - and was eaten away to the backing plate. It was so disintegrating/chunking so fast that under braking it caused the car to turn. Keep in mind that this was just 1 pad on the front driver's side (the outer pad), the inner pad still had about 1/3 remaining - and although it was chunking, it was not disintegrating. Both rear pads still had more than 1/3 remaining. [pics posted.] As expected, the rotor was also ruined, but they were almost to the point of being heat cracked out anyway (OEM cross drilled). But if I was running 2 piece or something else relatively expensive, I would have been really PO'd.
I was always aware of the chunking and low pad issue, but didn't realize it could fall apart like a granola bar. Word to the wise: keep an eye on your Pagid Pads - and when they start flaking, pay extra attention to them.
Part II:
So I upgraded to PFC-01 in the front / PFC-97 in the rear (on recommendation of the track support gurus - we'll see how this turns out).
However, now I have a clicking noise when I tap the brake. My guess is that when there is no pressure in the line, the pads back off the rotor just a bit, and when you tap the brakes they are pushed onto the rotor causing the clicking noise I hear. Maybe the spring clip isn't tight. Dunno.
Has anyone experienced this?
-td
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Last edited by himself; 02-17-2009 at 11:53 PM.
#2
Three Wheelin'
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I have the same clicking noise with all of the PFC pads I have used on my 964 and now my GT3. It usually happens when you don't use the brakes for a while (like on the freeway) and then pull up to a light. The first time I touch the brakes, I will get a "CLACK" sound, like the front pads are seating in the caliper. Is this similar to what you are hearing?
#3
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I have the same clicking noise with all of the PFC pads I have used on my 964 and now my GT3. It usually happens when you don't use the brakes for a while (like on the freeway) and then pull up to a light. The first time I touch the brakes, I will get a "CLACK" sound, like the front pads are seating in the caliper. Is this similar to what you are hearing?
-td
#5
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when i rebuilt my calipers the new rubber boots tended to pull the pistons away from the pads and it would get a 'clack" when I used them...after awhile when the boots cured the noise went away...just a thought.
#7
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With respect to the Pagid pads chunking and disintegrating, were these the Pagid RS 19 or perhaps the 29? I have never seen those things disintegrate except when the rotor itself is damaged. Street pads including the so called "sport" pads will disintegrate under hard use, normally as they cool off. Of course you only find out when you next hit the brakes. Happened to me and yup I ruined the rotors because the backing plate was the only friction material left.
Best,
Best,
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#8
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With respect to the Pagid pads chunking and disintegrating, were these the Pagid RS 19 or perhaps the 29? I have never seen those things disintegrate except when the rotor itself is damaged. Street pads including the so called "sport" pads will disintegrate under hard use, normally as they cool off. Of course you only find out when you next hit the brakes. Happened to me and yup I ruined the rotors because the backing plate was the only friction material left.
Best,
Best,
The rotors themselves had probably 3-4K street/track miles, but they were showing signs of heat cracks due as the OEM cross drilled rotors usually do. I would guess only 1 or 2 (3 at the most) more events before they needed to be discarded anyway.
-td
Last edited by himself; 02-17-2009 at 04:02 PM.
#9
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I think they recommend changing the pay shortly after it goes past 50%. I run them down to the same thickness as the backing plate but that is the limit for sure. You could have just had a bad egg, as I have never had that happen. they will get a few stress cracks but never seen them come apart. The clicking, just make sure the retainer spring is centered between the two pads also.
#10
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Try bending the retaining spring to give it more tension. This stopped a clacking noise on my 996 GT3 after the dealer went nuts trying to fix it. Any bumps would make the pads clatter, I noticved that it neveer happened if there was any pressure on the brake pedal. Bent the %$W#@ spring and no more rattle.
#11
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Try bending the retaining spring to give it more tension. This stopped a clacking noise on my 996 GT3 after the dealer went nuts trying to fix it. Any bumps would make the pads clatter, I noticved that it neveer happened if there was any pressure on the brake pedal. Bent the %$W#@ spring and no more rattle.
I Will give bending the %$W#@ out of the spring a try. Good thing I picked up a %$W#@ bender at Harbor Freight last weekend.
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-td
#12
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During one session, I had one front pad chunk horrbily - to the point it was literally disintegrating under braking - and was eaten away to the backing plate. It was so disintegrating/chunking so fast that under braking it caused the car to turn. Keep in mind that this was just 1 pad on the front driver's side (the outer pad), the inner pad still had about 1/3 remaining - and although it was chunking, it was not disintegrating. Both rear pads still had more than 1/3 remaining.
#13
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I'll check this and report back.
-td
#14
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When I when through a set of BHP pads in 3 days (2.5, really), I lost them on one corner of the car only, and the inside pad had like 3x the material left as the outside pad (a whopping 5 mil or so). See attached pic.
I've checked the pistons, and they are not stuck.
-Judd
#15
Race Director
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Had a click or clack sound in my 997S when I used PF97's not real big deal though. Bend up the retaining clip to put more pressure on them. I do not use the clip at the track though so I get a clack when the brakes are 1st applied either going forward or backing up.