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Help Fitted brembo calipers now a problem

Tin cup

Tin cup

Car  172cup
There's a bad thund noise when the wheel is spinning on the pass side, I took the disc and caliper off it looked ok so I cleaned the hub to make sure it's not that to it for a test drive and still there I took it all back off and the disc was very hot for a once round the block could it be a piston sticking but it looks ok or air still in the caliper, sounds like the a pad is hitting the disc
 
Ok so I think that on that side the person how rebuilt the calipers before I brought them put the pistons in the wrong order ? Because there's big to small sound it be big to big small to small
 
Pistons in the wrong order?
There are 2 sizes and they only fit in the correct holes.
It sounds like it's either a sticky piston or pad or the caliper is not central.

It shouldn't generate heat on one side through gental driving.
 
Well unless the person how put them together has use on half from a different car and used the wrong side
 
image.webp
image.webp
 
The picture is of the passengers, side both of the caliper first one the lager piston is at the top the lower picture the larger piston is at the bottom and there the same as the other side vice versa but the drivers side isn't make and noise
 
Thanks for you replays well I've got it in axel stands with no wheels on and it's it 1st gear with only the drivers side disc spinning the left on isn't spinning freely so it must be sticking piston ? I only brought them because they look mint and must of had a rebuild and Pistons look new, is there a way of finding which piston is sticking ?
 
Could I take the disc off refit the caliper put a spacer I between the 2 sides of the calipers then press the brake and see which one doesn't go back in ?
 
I've half pop it over half way and cleaned (didn't look dirty ) and not rusty is it ok to grease it up ?
 
Thanks mate but I've had this caliper off and on now about 10 times the sticking piston well the one I'm sure it is looks like new and inside the caliper looks new so not sure why it's sticking or if I can stop it I'm going to give it ago tomorrow even with a damaged cover I'll order a new one, as it would be nice to use my car
 
300mm discs and 406 calipers on the motex brackets?

The outer edge of the disc fouls the inner of the caliper. And gets worse as they heat up, once the tiny bit of material has wore away in the caliper the noise will go. No problem imo with those caliper pistons (bar the dust seal)

Fit them back on and give the brakes some stick and and heat them right up. Dont worry about the scraping you will get as its just doing what i daid above.
 
There working well mate but squealing a lot and that was with coppergrease (a lot) looking into minted pads (1144) as I've heard there better?
 
strip them, clean them and apply a very thin smear of ceramic brake grease, not copper grease. Changing the pads isn't going to fix it if you are sticking tons of copper grease on them.
 
No grease will stop the noise.

I tried
Various makes of pad
Different brand discs
Anti squeel shims
Rubber squeel pads
New yolks
Filed edges of pads right down
Spent loads trying to sort it and got no joy, so sold up
 
The 406 items can go quiet with Ceramic Grease. I had similar brakes on my 944 Turbo and they were fine (with the plates etc).. However, a Porker specialist in Brum (and a fellow owner) also said to leave the grease off them entirely and to go with the genuine rubber squeal doughnuts that sit inside the pistons themselves(I know some Brembos came with these). It seems the ones from ECP are near useless and the ones from the dealer/Brembo do the trick but there is a price difference.

However, upon seeing those plates (Don't Google Brembo Plate Lift ; the pads get stuck in the caliper basically as a result of rust build up beneath the plates) I'd go for the later Clio III items.

I have to ask, why do people convert to Brembos on 1*2s? OK, maybe the Turbo guys have a reason or peeps with very highly strung engines but the brakes did not strike me as that bad in stock form, espeically with a good set of pads in them and good fluid :). If I'm missing the point fair enough. I'm sure even Fred@BTM said the stock items were fine.
 
RS Charlie said:
I have to ask, why do people convert to Brembos on 1*2s? OK, maybe the Turbo guys have a reason or peeps with very highly strung engines but the brakes did not strike me as that bad in stock form, espeically with a good set of pads in them and good fluid :smile:. If I'm missing the point fair enough. I'm sure even Fred@BTM said the stock items were fine.
Click to expand...
There's various reasons why people change the stock setup, and in no particular order, and certainly not trying to be sarcastic!

1) people like changing stuff as part of modifying their car
2) genuinely need improved braking from running twice the original hp
3) sounds good in the pub
4) more money than sense
This is just a small number of reasons. Lol

The stock setup is very capable that's for sure. With the correct pad/disc combo you do get some exceptional stopping power.
I'm upgrading to the 197 brembos for piece of mind really. I just don't fancy hitting 140+ at the 'ring, then not being able to haul the speed off in time to take the next corner.
 
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