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-   -   Just so you don't think the Nissan was faulty... (http://www.the370z.com/track-autocross-drifting-dragstrip/128401-just-so-you-dont-think-nissan-faulty.html)

osbornsm 09-18-2018 09:12 AM

Just so you don't think the Nissan was faulty...
 
Just so you don't think the Nissan was faulty...

I boiled the brake fluid in the Camaro SS 1LE too...
- 6-piston caliper
- 2-piece 14.6" rotors

WTF is going on here :roflpuke2:

Brendan 09-18-2018 09:29 AM

I just think its getting harder for manufacturers to make a capable track vehicle at the sub $100k price range while also making it compelling on the street. There are, of course, exceptions. They opt for a compelling street car since that is what the majority of buyers want, but often cooling and braking still need improvement. It is what it is. Not too hard to fix.

JARblue 09-18-2018 10:39 AM

Stock fluid?

osbornsm 09-18-2018 01:28 PM

Quote:

Originally Posted by JARblue (Post 3786543)
Stock fluid?

Motul RBF600...

to...
the...
floor.

2011 Nismo#91 09-18-2018 03:39 PM

;) Track pads and fluid and brake boil on 2 different cars. You sure you're not on the brakes too much/early?

osbornsm 09-18-2018 03:44 PM

Quote:

Originally Posted by 2011 Nismo#91 (Post 3786580)
;) Track pads and fluid and brake boil on 2 different cars. You sure you're not on the brakes too much/early?

no idea... i'll adjust and report back. :tup:

Hotrodz 09-18-2018 04:14 PM

My buddy that I track with has a 14 1le and he did the same thing over and over again boiling both Motul and Castro brake fluids. He went with track brake pads and has gone through three set of rotors. He has now add 3" brake ducting.

He is also a very late braker and stands on them hard. I and other have tried to coach him braking hard and deep into each corner is not the best that sometimes you want to ease into it slowing then trailing off so you can carry more speed through the corner which will result in a greater exit speed. Braking should not be done like an on off button regardless.

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BGTV8 09-18-2018 05:07 PM

Quote:

Originally Posted by osbornsm (Post 3786512)
Just so you don't think the Nissan was faulty...

I boiled the brake fluid in the Camaro SS 1LE too...
- 6-piston caliper
- 2-piece 14.6" rotors

WTF is going on here :roflpuke2:

Physics is the answer ............ not wanting to trivialise this BUT ........

Brakes convert kinetic energy of a moving vehicle into heat to slow it down.

The shorter the time that the heat builds up increases the max temp the pads see and greater the opportunity for heat to get past the pads and into the pistons which will transfer it to the fluid.

So, my suggestions are:
1. More cooling (lots more - maybe 2 x 3" ducts)
2. Put temperature paint on the rotors and calipers so you can see just how hot it is all getting
3. Consider titanium pad backing plates OR titanium shims
4. Check your data and compare to a buddies .... are you over slowing the car before rotating into a corner
5. Look to driving style - can you extend the braking zone with a trail-brake. If you carry the brake longer, you extend the time over which kinetic energy is dissipated equals less heat build up
6. Look to the rotors and rotor material .... the rotor is a heat sink so with greater mass comes greater ability to absorb temperature which means less temp into the pad/piston and ultimately fluid BUT the quid quo pro is a heavier hub/rotor/caliper assembly for the shocks to control in bump and rebound and more rotational inertia to affect performance - small but if you look at data, you should be able to see it
7. The other thing I forgot to mention is that pad material is also an effective insulator, so chuck your pads in the bin when there is 5mm or less pad material left on the backing plate - usually around 10mm overall including backing plate.

Your sig suggests DBA rotors and I reckon you've outgrown what is effectively a road car rotor so look to race rotors ..............

These guys do really good motorsport rotors BUT they are exie ...

http://www.brypar.com/product-catego...r-brake-discs/

This is a heat-management exercise and won;t be a cheap fix ....

Simplest and cheapest is to look to driver technique and that is about maximising mid-corner speed which reduces the speed you need to kill and the kinetic energy you need to turn into heat - and trail braking is one key technique.

Good luck !!

Hotrodz 09-18-2018 05:30 PM

Quote:

Originally Posted by BGTV8 (Post 3786605)
Physics is the answer ............ not wanting to trivialise this BUT ........

Brakes convert kinetic energy of a moving vehicle into heat to slow it down.

The shorter the time that the heat builds up increases the max temp the pads see and greater the opportunity for heat to get past the pads and into the pistons which will transfer it to the fluid.

So, my suggestions are:
1. More cooling (lots more - maybe 2 x 3" ducts)
2. Put temperature paint on the rotors and calipers so you can see just how hot it is all getting
3. Consider titanium pad backing plates
4. Check your data and compare to a buddies .... are you over slowing the car before rotating into a corner
5. Look to driving style - can you extend the braking zone with a trail-brake. If you carry the brake longer, you extend the time over which kinetic energy is dissipated equals less heat build up
6. Look to the rotors and rotor material .... the rotor is a heat sink so with greater mass comes greater ability to absorb temperature which means less temp into the pad/piston and ultimately fluid BUT the quid quo pro is a heavier hub/rotor/caliper assembly for the shocks to control in bump and rebound and more rotational inertia to affect performance - small but if you look at data, you should be able to see it

Your sig suggests DBA rotors and I reckon you've outgrown what is effectively a road car rotor so look to race rotors ..............

These guys do really good motorsport rotors BUT they are exie ...

http://www.brypar.com/product-catego...r-brake-discs/

This is a heat-management exercise and won;t be a cheap fix ....

Simplest and cheapest is to look to driver technique and that is about maximising mid-corner speed which reduces the speed you need to kill and the kinetic energy you need to turn into heat - and trail braking is one key technique.

Good luck !!

I always appreciate the details in your explanations.

The other thing is the Camaro is a big car at about 4000 lbs.

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cv129 09-18-2018 06:20 PM

It’s fair to say the technology in braking has not kept up with the developments in suspension, engine power level, transmission speed and tires. Everything else aim to make the car go and turn faster, but there hasn’t been any ground breaking development in the braking system.

Edit: minus the carbon ceramics in the exotics.

Rusty 09-18-2018 07:44 PM

Quote:

Originally Posted by cv129 (Post 3786613)
It’s fair to say the technology in braking has not kept up with the developments in suspension, engine power level, transmission speed and tires. Everything else aim to make the car go and turn faster, but there hasn’t been any ground breaking development in the braking system.

Edit: minus the carbon ceramics in the exotics.

When the cars for the masses start to need the ability of the carbon brakes. Then you will see it at lower priced cars. Until then. It's for the exotics.

BGTV8 09-18-2018 09:13 PM

Quote:

Originally Posted by Hotrodz (Post 3786609)
I always appreciate the details in your explanations.

The other thing is the Camaro is a big car at about 4000 lbs.

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Camaro is a variation on the Holden Commodore which is pretty common here (1850-1900kgs so 4000lbs easy).

The guys that track them here all use OEM Brembo's until they start running into problems and then they use cast-off V8SuperCar brakes which are an AP Racing package with 395mm rotors (34mm thick)

Hotrodz 09-18-2018 09:41 PM

Quote:

Originally Posted by BGTV8 (Post 3786653)
Camaro is a variation on the Holden Commodore which is pretty common here (1850-1900kgs so 4000lbs easy).

The guys that track them here all use OEM Brembo's until they start running into problems and then they use cast-off V8SuperCar brakes which are an AP Racing package with 395mm rotors (34mm thick)

Good to know because my buddy had his Brembos rebuilt and I don't know if the outcome will be any different for him. He said the brakes cooling did help some.

Thanks!

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Rusty 09-18-2018 09:56 PM

Quote:

Originally Posted by Hotrodz (Post 3786656)
Good to know because my buddy had his Brembos rebuilt and I don't know if the outcome will be any different for him. He said the brakes cooling did help some.

Thanks!

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Got to get the heat out.

osbornsm 09-19-2018 08:21 AM

The plan so far...

1. Camaro is 3700 lbs
2. Titanium backing plates
3. Castrol SRF
4. Carry WAY more speed and brake less <-- not as easy


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