Rear AP brakes

Rear AP brakes

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Discussion

julian64

Original Poster:

14,317 posts

254 months

Saturday 25th April 2015
quotequote all
Can someone check for me on their rear AP calipers. Are the pads held in by a metal pin, or a splitpin.

?

ukkid35

6,171 posts

173 months

Saturday 25th April 2015
quotequote all
eBay #360755683295
A2 Split Pin Size: 4mm x 100mm

See GT6K's thread for the anti-squeal springs

julian64

Original Poster:

14,317 posts

254 months

Saturday 25th April 2015
quotequote all
hmm. I think the pin is in the later calliper.

Having some problems tracking down a rattle from the rear wheel of the car. It disappears on braking

Have taken the disc off to check handbrake shoes......no problem
Have messed with the CV joints ....no problem

now have found that the bake pad is copper and the hole that the split pins goes through on the brake pad has become elongated, enough to allow the brake pad to touch either side of the calliper and wondered if that's the rattle.

I could drill the copper brake pad and put a steel ferrule in but I'm still not convinced its the problem. £30 would get me a set of old steel brake pads to try in?

billynobrakes

2,675 posts

265 months

Sunday 26th April 2015
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Hello Julian

sounds the age old problem of the pads jumping up and down, does it sound like castanets when driving along and as you say stops when you put the brakes on, you can see if it is quite simply by taking out one of the pads and put the split pin in and if the pin is smaller than the hole in the pad that is why the pad jumps up and down, it is exactly the same on my Cerb, in the end I siliconed the pad to the piston only way I managed to stop the rattle

julian64

Original Poster:

14,317 posts

254 months

Monday 27th April 2015
quotequote all
Yep but didn't have the problem prior to the new pads with a backing plate made of what looks like copper. The copper is far more likely to wear compared with steel. They didn't rattle when I first put them it, it developed over about a 1000 mile of use. Now th eholes i nthe copper backing plate look like ovals and the pad is capable of hitting each side which wasn't the case before. I can't have that sound interferring with my enjoyment of the car.

I think the three remedies to this are

1) Don't buy pads with a copper backplate
2) make a stell ferrule to go in the copper backplates
3) dril the calipers to accept a steel pin rather than a splitpin.

billynobrakes

2,675 posts

265 months

Monday 27th April 2015
quotequote all
julian64 said:
Yep but didn't have the problem prior to the new pads with a backing plate made of what looks like copper. The copper is far more likely to wear compared with steel. They didn't rattle when I first put them it, it developed over about a 1000 mile of use. Now th eholes i nthe copper backing plate look like ovals and the pad is capable of hitting each side which wasn't the case before. I can't have that sound interferring with my enjoyment of the car.

I think the three remedies to this are

1) Don't buy pads with a copper backplate
2) make a stell ferrule to go in the copper backplates
3) dril the calipers to accept a steel pin rather than a splitpin.
I thought about the last option and think that would be the easier option and with your workshop simple

How are you not seen you for a while, I have now got a T350 with Powers 4.5 and love it, a very nice Griff just had a engine rebuild

I have decided to sell the Cerb though as just not using her, spent a small fortune on her since we last met

julian64

Original Poster:

14,317 posts

254 months

Monday 27th April 2015
quotequote all
Interesting you should mention it, I thought about a T350 at one point as the only other TVR I liked the styling on. Matched with a TVR power engine it must be quite some beast.

As for me, ticking on. I reluctantly got rid of the M5, Never liked the E60, so looked at the new M5 but just didn't gel with the idea of not much more real world performance for the money paid out.

So convinced the wife the 335xd was the sensible option so I can sneakily save up for a gallardo in the next few years. At least thats the current masterplan. waiting for the LP560 to become affordable smile

billynobrakes

2,675 posts

265 months

Monday 27th April 2015
quotequote all
Yes the T350 is awesome, it has 414BHP and the most important bit 368lb/ft of torque so drives like a V8, I will have to pop over so you can have a look and take it for a drive, changed shocks for Gaz Monotubes very good

I was toying with the idea of selling all three TVR,s and getting a Ferrari 430 or a Gallardo, but it was the running cost that put me off

Excuse me but I think you talk with fork tongue "save up" just take some money out of your off shore account

Steve_T

6,356 posts

272 months

Monday 27th April 2015
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I think the pin holes in the pads are elongated as standard:

http://www.ebcbrakeshop.co.uk/tvr-cerbera-42-20012...


julian64

Original Poster:

14,317 posts

254 months

Monday 27th April 2015
quotequote all
Just ordered a set of standard pads to try in. If you're right and thats not the issue then I'm foxed.

I rely on the fact the noise stops with light braking. Possibly the CV joints I guess but I still have my hopes on the pads

Steve_T

6,356 posts

272 months

Monday 27th April 2015
quotequote all
I think it's just the action of the pads within the calipers. With light pressure the pads will be dragged with the rotation of the disc until they rest against the inside of the calipers. The double sided tape anti-rattle shims sorted it for me.

gruffalo

7,520 posts

226 months

Monday 27th April 2015
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Julian, it is the pads catch the disk flipping them up till they hit the caliber drop down and flip up again.

Stop worrying about other things and fit the anti rattle pads and springs, the clue is in the name.


julian64

Original Poster:

14,317 posts

254 months

Tuesday 28th April 2015
quotequote all
The springs are already on there, where do I get the anti rattle pads.

More interesting why have I never had this noise before?

gruffalo

7,520 posts

226 months

Tuesday 28th April 2015
quotequote all
julian64 said:
The springs are already on there, where do I get the anti rattle pads.

More interesting why have I never had this noise before?
I don't mean the poxy biro springs that fit round the split pin I mean these. http://www.powersperformance.co.uk/store/slug/anti...

Pads from eBay.

http://www.ebay.co.uk/itm/191314514764?_trksid=p20...


Edited by gruffalo on Tuesday 28th April 08:35

julian64

Original Poster:

14,317 posts

254 months

Tuesday 28th April 2015
quotequote all
gruffalo said:
julian64 said:
The springs are already on there, where do I get the anti rattle pads.

More interesting why have I never had this noise before?
I don't mean the poxy biro springs that fit round the split pin I mean these. http://www.powersperformance.co.uk/store/slug/anti...

Pads from eBay.
Okay good punt, I'll give them a try, cheers

julian64

Original Poster:

14,317 posts

254 months

Thursday 30th April 2015
quotequote all
Hmmm

Website says the anti-rattle pads are for CP5211 callipers, mine are CP5111. Rang this morning to be told they will fit with no problems on a CP5111.
Watch this space.

julian64

Original Poster:

14,317 posts

254 months

Saturday 2nd May 2015
quotequote all
Okay, anti-rattle pads fitted with no problem, rattle all gone. Perfect