mat_fenwick wrote:
Poor brakes
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Re: Poor brakes
Another senior moment; I was trying to figure out why you needed to stuff a rubber ball in to stop the spring falling out in this picture, after studying it for some time I then realised it is your finger in a rubber glove
Kevan
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Re: Poor brakes
i wouldnt work out in the cold till my fingers ( well what i have left of them ) turned blue like those in the picy
regards malcolm
regards malcolm
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- citsncycles
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Re: Poor brakes
It was a long time ago but I do remember reading in a Citroenian that while Mk1's were like all previous Citroens with a hydraulic system with a direct acting brake pedal, Mk2's had 'artificial feel' built into them in an effort to make it feel more like a normal car.
Mike Sims
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- mat_fenwick
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Re: Poor brakes
That would fit with my limited observations, as the only Mk1 I've driven is Timex, and there was a marked difference between that and the late Mk2s I've more familiar with. It was that which prompted me to weld up where the spring sits! It still doesn't feel as sensitive as yours, which I've put down to the fact mine has ABS.
If the change to add the spring coincided with Mk2 introduction, it doesn't explain Dollywobbler's problem though...I'd wondered whether it was fitted only to late Mk2s, which would fit the symptoms if all his other BXs have been earlier (pre-spring) cars.
If the change to add the spring coincided with Mk2 introduction, it doesn't explain Dollywobbler's problem though...I'd wondered whether it was fitted only to late Mk2s, which would fit the symptoms if all his other BXs have been earlier (pre-spring) cars.
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Re: Poor brakes
We'll see if we can find anything obvious on Friday. LHM is out for delivery tomorrow hopefully...
- MULLEY
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Re: Poor brakes
I suspect very old lhm sat in the dead stops of the calipers, so it overheats very quickly when braking, hence poor performance.
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- mat_fenwick
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Re: Poor brakes
I can't see it being that TBH - why would it get any hotter just because it's old? And for it to get hot, first the pads have to get hot, then transfer that heat via the (deliberately) small contact area between the pads and pistons before transferring the heat to the fluid.
Hopefully we'll have more of a clue tomorrow!
Hopefully we'll have more of a clue tomorrow!
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Re: Poor brakes
I don't buy that. You're never going to generate enough heat with that first brake application of the day to cause that issue. I think the back end was bled when the rear arm bearings were done, as one brake pipe snapped. Therefore the only caliper with old LHM in it will be the nearside front.MULLEY wrote:I suspect very old lhm sat in the dead stops of the calipers, so it overheats very quickly when braking, hence poor performance.
We'll see what we find tomorrow. New accumulator and replacement pump available.
- MULLEY
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2002 Mini Cooper S - SOLD - i miss this car
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Re: Poor brakes
If you took the Heat argument out of the equation, Fresh LHM will have a certain amount of resistance as opposted to brown/yellow piss, the pistons don't receive as much pressure to them for the same amount of braking action? But air in the lines is also a potential factor, along with a hydraulic system that is down on pressure, its probably all 3 things tbh causing a cumalative effect of rubbish brakes. Fingers crossed you can solve it, as its rather important safety feature.
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
I'm not just a username, i'm also called Matthew.
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
I'm not just a username, i'm also called Matthew.
Re: Poor brakes
just try one thing at a time or you wont know for sure which fix fixed it
i would fit the new A/C sphere first but this in its self wont make much difference without bleeding the brakes as well
regards malcolm
i would fit the new A/C sphere first but this in its self wont make much difference without bleeding the brakes as well
regards malcolm
curent ride
K reg BX 17TD TZD est
also own
K reg D special
no longer have
H reg CX saffari 2.5 TRI (now gone to Malaysia)
R reg xantia 1.9TD est (gone to meet its maker)
K reg BX 17TD TZD est
also own
K reg D special
no longer have
H reg CX saffari 2.5 TRI (now gone to Malaysia)
R reg xantia 1.9TD est (gone to meet its maker)
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Re: Poor brakes
i think bleeding the whole braking system is a good idea as the lhm in the brake lines always stays in the brake lines and dosent recirculate back into the system does it? even when renewing the lhm in the reservoir unless you bleed all the brake lines the old fluid will remain in the brake lines, i found good quality pads a full brake line bleed and a new accumulator sphere, and new flexi front lines as the old ones were starting to "blow" under pressure improved the brakes on the tzdt 100%, also the rear calipers were starting to stick on slightly, get them pistons freed off and lubed. mind you dont break off any bleed valves as they do quite easily, i also replaced all these. new discs can also make a vast difference and can be obtained from ebay for peanuts, i paid about £30 for a full set front and rear. the brakes are now sharp and pull up evenly and smoothly and the pedal has a lot more feel to it with less pressure needed to brake.will be giving the tgd the same treatment soon as the brakes are ok but feel as the tzdt did beforehand.
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Re: Poor brakes
rutter123 wrote:improved the brakes on the tzdt 100%, .
So you didn't have any brakes to start with then?
Kevan
1997 Mercedes C230 W202
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2020 Fiat Panda 4x4 Cross Twin Air.
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Re: Poor brakes
meaning they are twice as good as they used to be-last MOT rears were only just meeting the req limit and front 23% imbalance on 1 side and only just meeting requirements, couple of hours overhaul well worth it.
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- Tim Leech
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Re: Poor brakes
I need to get the brakes bled on the TZI, there is too much "sponge" in them for my likiing, the accumulator and rear spheres were flat as witches wotsits when I got so probably the nitrogen is flying around somewhere.
Lots of Motors, mostly semi broken....
Re: Poor brakes
yep thats one i had forgotten aboutrutter123 wrote: and new flexi front lines as the old ones were starting to "blow" under pressure
regards malcolm
curent ride
K reg BX 17TD TZD est
also own
K reg D special
no longer have
H reg CX saffari 2.5 TRI (now gone to Malaysia)
R reg xantia 1.9TD est (gone to meet its maker)
K reg BX 17TD TZD est
also own
K reg D special
no longer have
H reg CX saffari 2.5 TRI (now gone to Malaysia)
R reg xantia 1.9TD est (gone to meet its maker)