low boost ....more power?? - Engines Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: low boost ....more power??

3rd time lucky

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Location: maidstone

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Post #26

Ultimately, reviewing my issues regarding brake fade found I had melted and mid-shaped my brake fluid reservoir cap so we put it down to boiling my fluid. It was only standard fluid which hadn't been changed in my ownership of 3 years at this point. Of course we have completely changed the fluid now for Millers racing stuff I believe. Pretty much done a track day at the Porsche testing centre and not a problem at all Thumbs up

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Posted 16th Dec 2016 at 07:37

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3rd time lucky

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Post #27

Aaron, what brake setup was Gary running on the R32? He had the same issue couple miles down the road.

________________________________________

DIABLO GTI-6 - Legend - NILE GTI-6 - Sold
CHERRY GTI-6 P1 SUPERCHARGED - Broken up
BLACK RALLYE - Sold
205 Dturbo xud9 work horse - Dead
CHERRY RALLYE - new toy

Posted 16th Dec 2016 at 07:42

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aaron6

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Post #28

He was running the exact same set up the golf touring car ran. His faded as the clutch is run by the same fluid as the brakes and when the garage did the clutch they didn't use the racing fluid that he had in before.

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Posted 16th Dec 2016 at 10:53

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fatlapit

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Post #29

I use millers racing but its dot 4 and ive never had a n issue

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Posted 16th Dec 2016 at 16:22

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aaron6

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Post #30

I use a dot 4 race oil and that's also fine. Has a higher boiling point than dot5

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Posted 16th Dec 2016 at 16:36

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Day666

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Location: Bristol

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Post #31

I'm running Castrol React SRF Brake Fluid 1 Litre = £39.99 though & I flushed the old out & needed 1.5litres Sadly ....but 300 degrees boiling point ...I think it's as good as you can get Dot4

Posted 16th Dec 2016 at 18:43

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manthos

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Post #32

Day666 wrote:

I'm running Castrol React SRF Brake Fluid 1 Litre = £39.99 though & I flushed the old out & needed 1.5litres Sadly ....but 300 degrees boiling point ...I think it's as good as you can get Dot4

I've been looking at this. Godspeed brakes also recommend the CL racing brake fluid

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Posted 16th Dec 2016 at 18:48

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barrym

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Post #33

Motul 660 is cheaper than Castrol and has a boiling point of 320. I got 2 litres for £46

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Posted 16th Dec 2016 at 21:51

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cully

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Location: Cullompton

Registered: 12 Jun 2013

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Post #34

fatlapit wrote:

I use millers racing but its dot 4 and ive never had a n issue

Im running the Millers racing 300plus Dot4 never had a problem with fade or boiling on std discs and mintex M1155
done a few trackdays on it now

Posted 16th Dec 2016 at 21:57

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barrym

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Location: Westcliff-on-sea

Registered: 26 Jun 2014

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Post #35

3rd time lucky wrote:

What you are boiling in 3 year old brake fluid is the water content it has accumulated. TBH even if you had brand new fluid in there I can't see you getting enough heat into it via the pads to travel a meter through copper lines and then the master cylinder to melt a plastic cap with a distortion point in excess of 150 degrees celcius.

I also don't see what the melted cap has to do with your brakes not working properly? It only seals to keep air/water out, it has nothing to do with brake effectiveness. In the short term your brakes would work just fine without the cap.

But new, better fluid is the right thing to do Thumbs up

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Posted 16th Dec 2016 at 22:01

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Day666

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Post #36

barrym wrote:

Motul 660 is cheaper than Castrol and has a boiling point of 320. I got 2 litres for £46

Castor React SRF Brake Fluid is 320 dry as well....but exceeds everything wet 240 if your all happy with what you have fair play Razz

Posted 16th Dec 2016 at 22:04

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barrym

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Post #37

Day666 wrote:

barrym wrote:

Motul 660 is cheaper than Castrol and has a boiling point of 320. I got 2 litres for £46

Castor React SRF Brake Fluid is 320 dry as well....but exceeds everything wet 240 if your all happy with what you have fair play Razz

Haha you have 90hp more than me so obviously I don't need to brake as much LOL

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Posted 16th Dec 2016 at 22:06

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3rd time lucky

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Registered: 23 Apr 2007

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Post #38

I was just putting 'brake fade' and 'melted reservoir cap' together and getting boiled fluid. Perhaps the exhaust manifold heat had melted the cap even though I have plenty of cooling for that. Sorry for the confusion but I wasn't trying to imply that the loose cap was affecting the use of the brakes Thumbs up

________________________________________

DIABLO GTI-6 - Legend - NILE GTI-6 - Sold
CHERRY GTI-6 P1 SUPERCHARGED - Broken up
BLACK RALLYE - Sold
205 Dturbo xud9 work horse - Dead
CHERRY RALLYE - new toy

Posted 16th Dec 2016 at 22:11

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barrym

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Location: Westcliff-on-sea

Registered: 26 Jun 2014

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Post #39

3rd time lucky wrote:

re reading your original post again I can see that. And that may well have been the cause of your brake fade. If you have a loose cap then air/water can get in and reducde the boiling point, especially if you were using 5.1? Dunno if you were but as it is not hygroscopic then water still gets in but instead of being absorbed it just concentrates at low points in the braking system, and the lowest point is the calipers.

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Posted 16th Dec 2016 at 22:37

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welshpug!

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Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #40

that's 5.0 (silicone) not 5.1.

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Posted 16th Dec 2016 at 22:47

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