help on brake fade??

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asifatyard21

Member +
currently running about 215bhp on td04.
i have got 3g grooved discs on front standard discs on back and sard brake pads all round. dot 5.1 brake fluid from toyota.
after about 10mins of hard driving i get very bad brake fade, any ideas on why and how i can reduce this?
cheers
 
smythy75

smythy75

Member +
asifatyard21 said:
currently running about 215bhp on td04.
i have got 3g grooved discs on front standard discs on back and sard brake pads all round. dot 5.1 brake fluid from toyota.
after about 10mins of hard driving i get very bad brake fade, any ideas on why and how i can reduce this?
cheers
Click to expand...

is your brakes bleed properly, maybe try braided lines, but if the fluid is new it sounds like they need bleeding!
 
D

Damo gt!

Fresh Recruit
have you uprated your actual calipers? if not i would, the standard ones arent all that great at the best of times never minding trying too grind 215bhp to a stop! i would upgrade my brakes to 4 pot if i had td04, dont think you would have too much a problem then.
 
Gee

Gee

Member +
Apprantly the calipers are well up to the job, it is the standard discs that are too thin.
 
D

Damo gt!

Fresh Recruit
Fair enuff, i would still upgrade the calipers aswell tho, im running small power on my car at the mo and ive had my breaking fade to next to nothing after a while of hard driving so wouldnt hesitate to get better calipers if i had serious power. just my humble opinion! An i think i need new disks!! ;)
 
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Adam_Glanza

Member +
tbh the brakes are over 10 years old, so a caliper rebuild at the most wouldnt hurt at all!

but yeah my caliper sliders where starting to get siezed
 
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Nick@TD.co.uk

Registered Trader <a href="http://www.TuningD
Right ive ran my car round the track with 3g discs and mintex pads and never suffered brake fade, but i was suffering brake fade on the road so before the trackday i changed my brake fluid and that solved the problem, even if it had dot5 brake fluid in it it requires replacing regulary as brake fluid (dot 5 i believe) absorbs moisture so doesn't last long, try replacing that before you go replacing expensive parts.

But if a caliper is seized then yeah you will suffer from the same.

~Nick
 
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Nick@TD.co.uk

Registered Trader <a href="http://www.TuningD
Adam_Glanza said:
all brake fluid absorbs fluids/moisture.

yeah try change the fluid and see if it helps
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Dot 5 has something added to it which i forget what it is, thats why most performance brake fluids are Dot 4 which is a much better choice, last's longer as well just has a slightly lower boiling point but should never reach that heat anyway.
 
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Nick@TD.co.uk

Registered Trader <a href="http://www.TuningD
Adam_Glanza said:
how come you use dot 5 then, wat is the difference
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I used dot 5 cause thats what i had available the day before the trackday, im going to Dot 4 fluid when i change mine very soon.

Can't remember what the difference was but there's something added to dot5 to make it a higher boiling point which means it absorbs more moisture and was told it lasts about a year only.
 
Gee

Gee

Member +
On Donnington my 3G brakes faded in to hell, my foot hit the floor! Was after a few laps thou and I was going for it :p
 
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Adam_Glanza

Member +
3g discs and mintex pads tbh are ok as a bit of a upgrade for the street, but after a long blast they just dont cut it. mine faded like a bitch too
 
starbogt

starbogt

Member +
braided lines will help and new fluid 5.1 need changing more regularly than 4.1 but up to you just has a higher boiling point. Brakes are nothing to do with horsepower of the car as the car still weighs the same ! and travels at the same speeds just gets there faster..
 
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asifatyard21

Member +
yes i just mean that is good to have brakes that will be able to stop you, so obviosuly with more power would require better brakes. i think they are sard type A pads. they are really good and stop car very well from high speeds but once brake fade kicks in becomes dangerous.
suggestions appreciated
 
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