Brakes making clicking/clunking noises

[JRedMKV]

The ones I have used are permatex high temp one is purple and also an orange one

Great. Thanks for the suggestion. I’ll see if that helps.

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[Todday1]

I won’t be able to take pics until the next time I find time to work on the car. Any high temp adhesive suggestions?

 

[JRedMKV]

Is that grease for the hardware or adhesive for the pads?

 

[Todday1]

Is that grease for the hardware or adhesive for the pads?

I am not sure what you are referring to. You do not use adhesive on brake pads or parts? This us what should be used even for the backing plate /piston contact. Are you referring to some of the brake squeal stuff

 

[JRedMKV]

I am not sure what you are referring to. You do not use adhesive on brake pads or parts? This us what should be used even for the backing plate /piston contact. Are you referring to some of the brake squeal stuff

Uhh no. What I’m referring to is that the OEM brake pads were originally glued to the brake pistons so they wouldn’t move. I think my issue would be solved if I somehow glued the z26 pads back to the pistons like the original OEM pads. I need a high temp adhesive for that.

 

[nibble]

Uhh no. What I’m referring to is that the OEM brake pads were originally glued to the brake pistons so they wouldn’t move. I think my issue would be solved if I somehow glued the z26 pads back to the pistons like the original OEM pads. I need a high temp adhesive for that.

OEM pad is never glued. due to heat, it does get stuck together mildly but never glued to pad and caliper.

 

[Todday1]

Well I hate to burst your bubble but oem pads are not glued to piston. My brakes operate 1400 F on the track. (Have heat painted rotors to measure) so these get hot easily. Oem brake grease is lesser heat range than what I showed you. This tends to cook and get hard so will crust up a bit an the backing plate could have stuck a bit so could have app appeared like it was “ glued” but there is no such thing as adhesive. These Brembo brakes with the pins in them will clunk if retaining clips do not hold pad down and allow it to slightly move up and hit pin. Greasing the ears of the pads were they are on the slides also helps. If you just slapped the pads with no cleaning skids and lubricant then this is probably part of your issue.

 

[razorlab]

OEM pad is never glued. due to heat, it does get stuck together mildly but never glued to pad and caliper.

Well I hate to burst your bubble but oem pads are not glued to piston.

The OEM front pads on the Supra are 100% glued to the pistons. You might not have noticed if you tracked the car before taking the OEM pads out, you probably melted the glue.

But I can assure you the pads are glued to the pistons from the factory.

I also would be taking the stance both of you are if I hadn't seen it (and pried it off) with my own eyes, on multiple Supras. Before you double down, it is 100% glue, not anything being created from heat cycles. Seen it on a supra with just dealer to home miles (not even a heat cycle) and daily driven supras with 2000+ miles.

 

[MyCorolla]

The OEM front pads on the Supra are 100% glued to the pistons. You might not have noticed if you tracked the car before taking the OEM pads out, you probably melted the glue.

But I can assure you the pads are glued to the pistons from the factory.

I also would be taking the stance both of you are if I hadn't seen it (and pried it off) with my own eyes, on multiple Supras. Before you double down, it is 100% glue, not anything being created from heat cycles. Seen it on a supra with just dealer to home miles (not even a heat cycle) and daily driven supras with 2000+ miles.

This video indicates you are correct; front OEM pads are glued.

 

[razorlab]

This video indicates you are correct; front OEM pads are glued.

Yup,

Here is more proof:

 

[nibble]

believe what you want to believe but you do not need adhesive to avoid clunking noise. most of the time, these clunking noise after changing pad only - if it was done properly - is due to pad moving inside caliper because there's too much gap between brake backing and the caliper wall. most of the time the gap occurs, one, shim is missing. two, forgot the name for it but there's thin piece of metal on caliper to hold brake pad is missing which supra does not have on front caliper. assuming all was installed properly, i'm deducting to shim is missing.

even if this was adhesive, if you can pull it out with your hand, force that brake applied will certainly rip it it out. so adhesive is not your issue.

my thoughts on those marks are grease tape on shims.

 

[razorlab]

First off, I never said it will fix the problem, nor did I offer it as a solution. Now...back to it being glue..

LMAO. Even with proof you deny it. Grease strips? Hahha

1000000000% adhesive glue. You are 1000000% wrong saying it isn't.

There are countless videos out there showing they are stuck to the pistons. If you actually have taken them out you would see it's not grease. Grease... hahhaha.

I can't even with this.

 

[razorlab]

Here, I just made a little video. Must be that new grease that actually works like adhesive... lol

Because I know you will probably double down here, it's obviously not very sticky in this video but that is because the adhesive part that wasn't contacting the pistons has brake dust all over it. You can clearly see where I had to rip the pad off the pistons because there are two circles on each pad where the glue stuck to the piston, not the pad.

If you keep denying after this video, I really don't know what to say.

 

[JRedMKV]

believe what you want to believe but you do not need adhesive to avoid clunking noise. most of the time, these clunking noise after changing pad only - if it was done properly - is due to pad moving inside caliper because there's too much gap between brake backing and the caliper wall. most of the time the gap occurs, one, shim is missing. two, forgot the name for it but there's thin piece of metal on caliper to hold brake pad is missing which supra does not have on front caliper. assuming all was installed properly, i'm deducting to shim is missing.

even if this was adhesive, if you can pull it out with your hand, force that brake applied will certainly rip it it out. so adhesive is not your issue.

my thoughts on those marks are grease tape on shims.

They are definitely glued. No doubt about it. I had to use a putty knife to separate it from the pistons. I’ve done countless brakes in my years and have never seen adhesive on pads before too. Also, I know the difference between the caked on anti-squeal/grease mixed with brake dust that you guys are talking about versus this sticky adhesive stuff.

If it is missing shims, then I don’t know what else there is because here is a pic of the z26 pads before installation and you can see the metal shims already attached to the back of the pads, exactly like the OEM pads. I will try to put more lubrication grease on the slides like suggested and give that a try.

I really really appreciate all the help and feedback guys, no need to get worked up.

 

[nibble]

stating such just confuses op and does not help to solve problem.

having said that, adhesive may have used during manufacturing process just to hold brake pads in place but that would not reduce clunking noise.

other issues I did not state - because I assumed all was correct - are much bigger issue such as wrong pad size or loose caliper.

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