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Braided Brake Lines

J4CKO

New member
Hi, I have the chance of some braided brake hoses, lightly used for a good price off a member on here, my car is an S2 and these were off an S, are the parts interchangeable ?
 
But it is not recommended to fit braided flexible lines to the rear due to the movement of the hub/caliper in relation to the flexi line fixing it apparently can crack the rubber under the braid and you dont see it obviously.
 
The lines are longer then nessery so they should move more freely then soild line? Making it less off a risk?
 
The lines are longer then nessery so they should move more freely then soild line? Making it less off a risk?

The issue is that the rears are twisted, not flexed by the movement of the suspension. The original rubber is able to cope with the twisting motion but the braiding is not.
 

ORIGINAL: david924s

But it is not recommended to fit braided flexible lines to the rear due to the movement of the hub/caliper in relation to the flexi line fixing it apparently can crack the rubber under the braid and you dont see it obviously.
Erm, not quite sure I follow this. The flexi at the rear is for the spot where the brake line leaves the body and moves onto the trailing arm; the connection to the caliper is regular (unflexible) brake pipe.


Oli.
 
Probably nearer 2-4 inches. It's very short.

To be honest, I have never heard of the brakes on a Porsche being anything other than excellent when everything is in good nick. I suspect that braided lines are unnecessary, and would save your money. If the existing brakes aren't good enough then spend the cash on getting them fettled, if the existing brakes are good enough then stop fussing buy an ice-cream instead!


Oli.
 
These would be part of my fettling process, going to strip them down and give them a check over/clean, suspect the hoses are pretty old so may as well go for braided.

The brakes are ok, but I am getting a little bit of juddering when braking from higher speeds, also I think they are not much cop when cold, they seem to need some heat in them to give their best, suspect there may be a bit of the dreaded plate lift as that causes juddering I beleive.

Not sure what to expect from an old 944 in terms of braking, my Saab 9-3 had epic brakes, these are good but need more of a prod, not as confidence inspiring but better than the Brembos on my Fiat Coupe.

 

ORIGINAL: J4CKO
Not sure what to expect from an old 944 in terms of braking, my Saab 9-3 had epic brakes, these are good but need more of a prod, not as confidence inspiring but better than the Brembos on my Fiat Coupe.
They will be (or should be) more than powerful enough to cope with the power and weight of the car. What they won't be is light or over-servo'd. The more I drive modern cars the more annoyed I get with people who say of their modern bimble-waggon "Oh, it's got excellent brakes" when what they mean is that the car has brakes which produce a lot of retardation with little pedal force, and little more. Good brakes should be able to bring the car to a brisk and controlled stop from any speed, when the car is fully loaded, with complete confidence that nothing will go wrong. How much force you need to apply to the pedal is a different matter entirely, and can be a function of how much servo-assistance you have from the brakes. I have a personal hatred for cars with over-servo'd brakes that tell you very little about what is going on under the wheels, and which invariably fail to produce much ultimate braking power even when you put considerable force on the pedal.


Oli.


 
Oli, I am with you on that point, our C1 has "Excellent Brakes", i.e. I touch them and stand it on its nose having not been in it for a while, the Saab had decent pedal feel, there was some over servoing perhaps but they would stop the car like dropping an anchor, full braking was violent from any speed, these arent as good, they do the job but not like the Saab, I am going to check them over when its a bit lighter/warmer and refurb accordingly, they wont need upgrading to anything bigger just making sure they are 100 percent.
 
The cast ATE brakes are excellent. I had a 1987 car when it was still newish and the brakes were unbelievable! If a later car with Brembos feels anything less than brilliant then the braking system is in a poor state. Rubbish pads, old fluid and worn calipers are the most likely candidates.
 
I opted for 'worn' for the sake of simplicity, but I suppose that inefficient would be a better way of describing it. Yes, plate lift.
 
The previous owner was pretty keen but not very hands on, I reckond a spring afternoon with the spanners will reveal all, I want the car to be spot on in every department, cant imagine the brakes will cost that much if I do them myself, its more time.
 
I didn't think my big blacks where hugly more powerfull then my S. but 2 be honist I don't think Iv tried hard anoth. I tryed a bit off left foot braking and I stop so sharply I stood the car.
 

ORIGINAL: J4CKO

The previous owner was pretty keen but not very hands on, I reckond a spring afternoon with the spanners will reveal all, I want the car to be spot on in every department, cant imagine the brakes will cost that much if I do them myself, its more time.
Take 'em off the car, ensure they are all free to slide as they should, if you are very keen then blow the pistons out of the calipers and clean them up and put them back in, put some new pads in if you think the old ones are worn, put some new disks on if they are worn, bleed the system thoroughly with some new fluid and all will be ticketty and boo.

Total cost: £10 for some new brake fluid (less if you shop around) and a sunny afternoon. And a couple of quid for the beers you drink when it's all over.


Oli.
 
ORIGINAL: T3rra

I didn't think my big blacks where hugly more powerfull then my S. but 2 be honist I don't think Iv tried hard anoth. I tryed a bit off left foot braking and I stop so sharply I stood the car.

I found the power of the Big Blacks deceptive if I am honest.

FWIW rubber hoses are fine as long as you get them from a good/OEM supplier. IME, OE quality is not enough (2 years for a pipe to start breaking away from the ferrule anyone? OK it was on a Mondeo, but on my second car it is still on the factory hoses after 200k...

In the case of the Stag the rubber items collapsed internally. No chance of that on the braided items :). It also improved the pedal feel no end (some felt I had upgraded the brakes (I shall admit the car was running a near enough new(ish) braking system after I had checked and fettled with most things).
 
I fitted braided lines to the front of my S2 (standard S2 brakes) when the old ones needed replacing, can't say I noticed much difference in stopping power or feel, think the benefits of braided lines are overpowered by the assistance of the servo. When I replaced all the lines on my motorbike with braided lines the diffrence was huge as with no servo assistance you can feel the effect of replacing the expanding rubber lines reducing the stopping power.

I think the best upgrade for my S2 was new pads, discs and a caliper refresh with new fluid throughout.
 

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