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Monaro VXR/Cupra TDi
Things seem a little better now.
I would say the pads and discs are an improvement over O.E.M. stuff. Used the other day from +100 m.p.h. repeatedly. No hint of fade, decent resistance to late braking and good biting.
Again, once cooled completely, noticed lack of biting and less stopping power for about five minutes.
Planning on having the brakes bled once more in the next two weeks. When Ren-Tech fitted the discs,pads and hoses, Castrol dot 4 was used. Would it be better to opt for dot 5 when have the brakes bled?
I would say the pads and discs are an improvement over O.E.M. stuff. Used the other day from +100 m.p.h. repeatedly. No hint of fade, decent resistance to late braking and good biting.
Again, once cooled completely, noticed lack of biting and less stopping power for about five minutes.
Planning on having the brakes bled once more in the next two weeks. When Ren-Tech fitted the discs,pads and hoses, Castrol dot 4 was used. Would it be better to opt for dot 5 when have the brakes bled?
Clio 172 ff
Glad your brakes got better. I'd say it's normal that the ds2500 doesn't have such a great bite initially. But if you're aware of it and warm them up a little each time before you gun it, it's fine. Doesn't really take much, according to my experience.
As for brake fluid: First of all, that should be dot 5.1, not dot 5. Dot 5 is silicone based and is not compatible with dot 3, dot 4 or dot 5.1. Therefore, it should only be used if you completely rebuild the hydraulic system. But I'm sure you don't want to do that. Also, dot 5 fluid, unlike dot 4 or dot 5.1, doesn't absorb water. That sounds like an advantage, but as far as safety goes, it really isn't. So, as long as you don't get water in the system, it's fine, but if you do, it's dangerous. Don't know about the UK, but in Germany, it's illegal to use dot 5 on the road. And in any case, dot 5 should not be used with ABS braking systems, afaik.
So, a high quality dot 4 should actually be sufficient. I'm using ATE Super Blue Racing which is a dot 4 specification but does have a dry boiling point of 280°C and of 198°C wet.
As for brake fluid: First of all, that should be dot 5.1, not dot 5. Dot 5 is silicone based and is not compatible with dot 3, dot 4 or dot 5.1. Therefore, it should only be used if you completely rebuild the hydraulic system. But I'm sure you don't want to do that. Also, dot 5 fluid, unlike dot 4 or dot 5.1, doesn't absorb water. That sounds like an advantage, but as far as safety goes, it really isn't. So, as long as you don't get water in the system, it's fine, but if you do, it's dangerous. Don't know about the UK, but in Germany, it's illegal to use dot 5 on the road. And in any case, dot 5 should not be used with ABS braking systems, afaik.
So, a high quality dot 4 should actually be sufficient. I'm using ATE Super Blue Racing which is a dot 4 specification but does have a dry boiling point of 280°C and of 198°C wet.
Monaro VXR/Cupra TDi
After 1500 miles I think I can honestly say I'm now happy with the brakes and the performance they offer.
I suspect if there is air in the system, it's very minimal as proved by some hard driving the other night.
Over the weekend when we endured some unpleasant weather, I went out in the car in the early hours of Sunday morning to "test" the cars ability in the pouring rain on my local circuit.
Absolutelty superb is the best way to describe it!
Braking was left very late before cornering. Excellent bite, pedal feel and resistance to fade. Wonderful grip by the Exalto's on the rain soaked roads.
Driving at speeds 100+ then slaming on the anchors purposefully to determine at what point lock occurs, to give an idea of how the car behaves in bad conditions and roughly how long and at what distance it takes to reach 0. Great brakes, damn decent tyres and superb ABS system showed it didn't take long at all!
Poise of chassis was wonderful with no squirming or twisting under braking.
Excellent levels of grip and balance through the twisty's with the rain hammering it down. Barreling into corners with slight braking before steering input, then building throttle, grip slowly diminshing when limits reached. Backing off throttle, grip stabilising qucikly. No unpredictable traits encountered. Minimal torque steer despite the monsoon weather!
The end result...far grater confidence in the car in these condtions, and a HUGE smile! :star:
What an excellent car!:star:
I suspect if there is air in the system, it's very minimal as proved by some hard driving the other night.
Over the weekend when we endured some unpleasant weather, I went out in the car in the early hours of Sunday morning to "test" the cars ability in the pouring rain on my local circuit.
Absolutelty superb is the best way to describe it!
Braking was left very late before cornering. Excellent bite, pedal feel and resistance to fade. Wonderful grip by the Exalto's on the rain soaked roads.
Driving at speeds 100+ then slaming on the anchors purposefully to determine at what point lock occurs, to give an idea of how the car behaves in bad conditions and roughly how long and at what distance it takes to reach 0. Great brakes, damn decent tyres and superb ABS system showed it didn't take long at all!
Poise of chassis was wonderful with no squirming or twisting under braking. Excellent levels of grip and balance through the twisty's with the rain hammering it down. Barreling into corners with slight braking before steering input, then building throttle, grip slowly diminshing when limits reached. Backing off throttle, grip stabilising qucikly. No unpredictable traits encountered. Minimal torque steer despite the monsoon weather!
The end result...far grater confidence in the car in these condtions, and a HUGE smile!
:star: What an excellent car!:star:
Octavia vRS tfsi
