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Author Topic: 3.2 Rear Discs  (Read 3699 times)

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Ant - Petrol Blue Thirty Two

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3.2 Rear Discs
« on: 19 February 2019, 12:46:16 »

Hi to all.  Think maybe be needing new rear discs (vented?) soonish.  Fitted Brembo to the front recently but can't seem to locate Brembo for the rear.  In any case, I know that some 'after' brands are rubbish but are there any other reliable makes (if indeed Brembo is?) you guys would swear by?  2002 3.2 Elite saloon.  Thanks in advance. Ant

PS.  as a by the way, What is the little amber light under the interior mirror that shines at night for?  Thanks
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Doctor Gollum

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Re: 3.2 Rear Discs
« Reply #1 on: 19 February 2019, 12:58:20 »

PS first... That's 'Indirect Night Lighting' for the centre console. Standard on Elite and part of the 'Rain Sensor Pack'  :y

TB will doubtless say that they are shit, but Apec do the job just make sure they are vented as solids will result in death*.

No excuses for not fitting genuine pads though as they are readily available on Ebay for £10-12 :y

*This might sound dramatic, but if you use solids, the pistons will eventually pass the seals as the pads wear, resulting in catastrophic fluid loss... The result of which will be soiled pants at best and total carnage and fatalities at worst.
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Andy B

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Re: 3.2 Rear Discs
« Reply #2 on: 19 February 2019, 20:56:50 »

PS first... That's 'Indirect Night Lighting' for the centre console. Standard on Elite and part of the 'Rain Sensor Pack'  :y

TB will doubtless say that they are shit, but Apec do the job just make sure they are vented as solids will result in death*.

No excuses for not fitting genuine pads though as they are readily available on Ebay for £10-12 :y

*This might sound dramatic, but if you use solids, the pistons will eventually pass the seals as the pads wear, resulting in catastrophic fluid loss... The result of which will be soiled pants at best and total carnage and fatalities at worst.

What he said  :y :y
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Webby the Bear

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Re: 3.2 Rear Discs
« Reply #3 on: 19 February 2019, 21:13:07 »

With dg. I’ve always liked fitting apec. Their fitment has always been spot on and never had a complaint. Having said that I currently have mintex on the back. No complaints from me but I have heard some folk not get on with them 👍
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Ant - Petrol Blue Thirty Two

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Re: 3.2 Rear Discs
« Reply #4 on: 20 February 2019, 16:53:31 »

Thanks to all for your replies and advice.  APEC(?) are available from where usually?  Although unavailable it seems, is Brembo a solid make then?  Thanks for the explanation of mirror light too - I moved an air freshener and noticed it for the first time in I won't tell you how many years I've had the car, cough cough.  Ant
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Webby the Bear

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Re: 3.2 Rear Discs
« Reply #5 on: 20 February 2019, 16:59:21 »

We get Apec from Bedford Battery-tray. No idea if they’re a national firm or not
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« Last Edit: 20 February 2019, 17:06:57 by Doctor Gollum »
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Jan Suhr

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Re: 3.2 Rear Discs
« Reply #7 on: 20 February 2019, 19:57:47 »

I'd go for ATE, same as original

https://www.sparepartstore24.co.uk/957246-ate
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TheBoy

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Re: 3.2 Rear Discs
« Reply #8 on: 24 February 2019, 09:21:05 »

On the back, most of the punishment comes from TC rather than braking. So anything really.

The stuff Brembo make for Omegas are the same shit made of cheese that all the pattern ones are.  I've tried a lot of them, including Mintex (and Apec Doctor G ;)), and they are utter shite, and invariably ended up going back to GM anyway.  So the cheap stuff just ends up costing more.

I'd learnt my lesson too many times with Omega brakes, so now I only buy GM brake parts for the Omega.  And I hate to see people waste money on the same mistakes I've wasted mine on, so forgive my passion over it.  I can see for the tunnies and Webbys of this world, a chocolate disc might last just long enough without distorting for the inner edge rust to kill it.  But for most of us, a 1.8t reasonably powerful car on small discs....


I should point out I work in MK, which if you don't drive like the locals does give the brakes a good workout.
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Re: 3.2 Rear Discs
« Reply #9 on: 24 February 2019, 10:45:30 »

Discs generally need changing every 2 or 3 pad changes regardless of make.  ;)
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TheBoy

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Re: 3.2 Rear Discs
« Reply #10 on: 24 February 2019, 10:51:50 »

Discs generally need changing every 2 or 3 pad changes regardless of make.  ;)
Yup.  Not after 2-4 months, which is what I was getting from the patterns...
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Re: 3.2 Rear Discs
« Reply #11 on: 24 February 2019, 13:10:57 »

Discs generally need changing every 2 or 3 pad changes regardless of make.  ;)
Yup.  Not after 2-4 months, which is what I was getting from the patterns...
Fundamentally boils down to pad wear rates. I rarely saw 10k from the front pads, and possibly 15-20 from the rears...
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Nick W

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Re: 3.2 Rear Discs
« Reply #12 on: 24 February 2019, 13:25:04 »

Discs generally need changing every 2 or 3 pad changes regardless of make.  ;)
Yup.  Not after 2-4 months, which is what I was getting from the patterns...
Fundamentally boils down to pad wear rates. I rarely saw 10k from the front pads, and possibly 15-20 from the rears...


And the front pads on mine did over 50k....


I wish they had some markings left on them so I could have bought some more.


I've only ever had to replace one clutch in over 30 years of averaging 25k per annum


over 25k miles from a set of 17" tyres; I reckon about 32k from a set of Capri tyres, which is apparently impossible.



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Lizzie Zoom

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Re: 3.2 Rear Discs
« Reply #13 on: 24 February 2019, 13:41:25 »

Discs generally need changing every 2 or 3 pad changes regardless of make.  ;)
Yup.  Not after 2-4 months, which is what I was getting from the patterns...
Fundamentally boils down to pad wear rates. I rarely saw 10k from the front pads, and possibly 15-20 from the rears...


And the front pads on mine did over 50k....


I wish they had some markings left on them so I could have bought some more.


I've only ever had to replace one clutch in over 30 years of averaging 25k per annum
 

over 25k miles from a set of 17" tyres; I reckon about 32k from a set of Capri tyres, which is apparently impossible.

It all comes down to how an individual drives their car.

I used to get 30k miles from a set of tyres on my company Escort Mk1, whilst a male colleague was lucky to get 10k out of a set on exactly the same model, as he screamed away from junctions with wheels spinning and rubber burning ::) ::)  He certainly got some bollockings from our boss!!  :D
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Doctor Gollum

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Re: 3.2 Rear Discs
« Reply #14 on: 24 February 2019, 14:12:10 »

That was whilst hacking it around as a cab... Time is money and all that :D
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Re: 3.2 Rear Discs
« Reply #15 on: 24 February 2019, 18:16:48 »

Discs generally need changing every 2 or 3 pad changes regardless of make.  ;)
Yup.  Not after 2-4 months, which is what I was getting from the patterns...
Fundamentally boils down to pad wear rates. I rarely saw 10k from the front pads, and possibly 15-20 from the rears...
I get probably similar, but change my pads at half worn, else they tend to not cool down sufficiently between roundabouts.  From GM, that was around 2-3 sets of pads a year, and new discs every 2 years, often due to inner edge corrosion rather than approaching wear limit.

The issue I suffered for a couple of years using cheap patterns (before I saw the light and went back to slightly more expensive GM) was disc deformation.  Now, there is a school of thought that if you skim them after you've cooked and deformed them, they will be less prone to such deformation.  But the cost of skimming makes in financially unviable.
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Re: 3.2 Rear Discs
« Reply #16 on: 24 February 2019, 18:17:42 »

Rear pads, no comment.  TC hammers the hell out of them.  My rear pads last significantly longer since I stopped using the BP here.
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Re: 3.2 Rear Discs
« Reply #17 on: 24 February 2019, 21:42:26 »

pagid are a decent quailty products, :y
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Re: 3.2 Rear Discs
« Reply #18 on: 24 February 2019, 22:38:42 »

pagid are a decent quailty products, :y

They used to be a couple of years ago, but sadly recent experience of a few on here has proven their product quality to have gone downhill.  :(
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Raeturbo

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Re: 3.2 Rear Discs
« Reply #19 on: 25 February 2019, 09:59:28 »

Had all my front and rear discs and pads from Keithshop.
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Re: 3.2 Rear Discs
« Reply #20 on: 25 February 2019, 17:38:16 »

pagid are a decent quailty products, :y
Not any more. Certainly not the ones ECP supply.
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Re: 3.2 Rear Discs
« Reply #21 on: 25 February 2019, 21:27:40 »



*This might sound dramatic, but if you use solids, the pistons will eventually pass the seals as the pads wear, resulting in catastrophic fluid loss... The result of which will be soiled pants at best and total carnage and fatalities at worst.

That word catastrophic? We never use that word in aerospace. Compromised performance of a DUAL system never results in Death.

anyways up.

I made this mistake.  I looked through the wheel of my Mv6 and saw solid discs. So that's what I bought. 

For reasons of time and working away from home, I gave the job to a mobile mechanic who came highly recommended. He never spotted the gap wasn't right. I'm not convinced totally but I think I'd have noticed, if I'd done the job myself.

Anyway, roll on a few 1000 miles, and I was heading from Derby to Liverpool, the scenic route one summer Thursday evening.  Via Buxton and the Cat and Fiddle.

I noticed that going through the Derbyshire dales the brakes seemed a bit squeeky, and spongy, but luckily I needed fuel, and where better to stop than before going over "The Pass" to Mac 
Stopped at the petrol pump and there's smoke everywhere.  The petrol lady was not phased and suggested If I saw flames, then maybe I might use the fire apparatus. 
The smoke was from the heat generated by the pad that was now trapped and rubbing on the disc and the fluid that was sprayed all around.  Lucky the piston on the other side was some way away from coming out or that would have been somewhat worse.

What fun.  The RAC man suggested that I could have clamped the hose and driven home fine.  I'm hoping he was joking. 2 hours later a transporter arrived. 2 hours after that I was home. 

BTW I struggled to get the right length pins.....The part number often results in the short version being delivered - twice. 
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Doctor Gollum

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Re: 3.2 Rear Discs
« Reply #22 on: 25 February 2019, 23:33:28 »

I TOLD YOU SO. ::)

Right, that's that out of the way... some mechanic... :D Might want to find a new one :-X

The part numbers for the supposed correct fitting kit Apec/Mintex etc are misleading. And wrong. Measurements and pics in the guides section.

Choices are limited to: 1. VX. 2. Good second hand. 3. Improvise with stainless split pins of suitable length and diameter. 4. Replace the rear calipers with summat else £££.
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Re: 3.2 Rear Discs
« Reply #23 on: 26 February 2019, 12:28:44 »

I'm pretty sure that the cross springs 9195056 are no longer available from Vauxhall. They're a different size to the version used with solid discs and are not interchangeable.
The pins 9195055 might be available on special order but are of the order of £6 ea. There are four but can likely be cleaned up and refitted.
The ATE discs linked to by Jan Suhr are coated so the edges and boss shouldn't rust for a couple of years. They should be just as effective as the factory fit. Whatever about cost, any new discs with new pads are likely an improvement on worn out old ones.
Discs (rear) wearing out too fast means that the friction material used in the pads is too abrasive. Use factory original pads if you can get them. They're less abrasive. Proper GM rear pads are ATE. Aftermarket ATE or Vauxhall Tradeclub pads are not necessarily the same as the factory pads, but should give good performance.
Rear discs of any make should last about 3 times the fronts.

I'd go for ATE, same as original

https://www.sparepartstore24.co.uk/957246-ate
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