Big Brakes - Who's done 'em.

[LargeOrangeFont]

A slighty different question.

Will the Cobra R brake install void your warranty?

Why would it?

 

[Kevin the Clean 1]

Go to the baer brakes web site and check out their exteme plus set with 6 piston monoblock calipers and 14" front rotors. This set up is much better than the 00R brembo set up.

x2 I could not agree more... ;-)

 

[Kevin the Clean 1]

... but the key is the pads, pads, pads, they make all the difference.

Very true!

 

[ShelbyGuy]

pads and tires

brakes dont stop the car
tires do

 

[Kevin the Clean 1]

pads and tires

brakes dont stop the car
tires do

I would say it more like 50/50. The brakes + the tires = great stopping

 

[2000silvergt]

Great info guys.......

 

[ShelbyGuy]

well you would be wrong then. brakes dont stop the car. tires do. if your tires are not adhering to the pavement, they're locking up and your brakes are doing diddly squat. its more like 85/15.

I would say it more like 50/50. The brakes + the tires = great stopping

 

[LargeOrangeFont]

well you would be wrong then. brakes dont stop the car. tires do. if your tires are not adhering to the pavement, they're locking up and your brakes are doing diddly squat. its more like 85/15.

+1 :burnout:

 

[aaronl]

Here is a question, why can't we have big rotors and 4 piston calipers on the rear of the 03' and 04' Cobra? I know we can do the BIG $$$ Brembo, and Baer 6 piston set up, but why can't someone modify a bracket or something so that we can use the front brake calipers from the 00' R upgrade kit? I would think a little ingenuity would go a long way to make something like that happen.....Anyone out there with the skills to check this out?

Thanks all,
Don

You mean like this?

These are only mockup pics right now, that's why the crappy hardware and the rear bolts are missing (I haven't found a place that will just sell me four) and I used the wrong side caliper (it was on the top of the stack and I just grabbed :shrug: ). I'll be the first to say it, these calipers are probably overkill but my IRS didn't have brakes on it when I bought it, and someone had given me these a few years ago. I just decided to make these do. Once I get all the hardware, make some spacers to center the caliper (and put the calipers on the right way ) I should be finished with that part of my project.

Aaron

 

[ShelbyGuy]

how do you intend to adjust the brake bias? the rears only do 15% of the work the fronts do.

 

[Joe King]

Good question

Aaron

What size are the pistons in the calipers? When I began my research I spoke to Daryl @Performance brakes & he recommended 1 3/8" pistons for a 4-piston set-upon the rear.

If you go larger you will probably run into a bias problem (ie. bigger pistons=more clamping) & need a proportioning valve.

You may also need a different master cylinder. When I went to 1 3/4" 4-piston calipers (in front) I had to change mine. PLEASE...do yourself a big favor & get some professional brake engineering help before you start complicating an already..ambitious..project.

So far looks great...have you decided on how you're going to do the e-brake?

 

[aaronl]

They are the 1 3/8" piston calipers, I had planned on using an adj. prop. valve anyways. As for the master cylinder I tossed the stock one a while ago, I haven't purchased a new one yet because I don't want to just throw parts at the car. I want it to work well, and with the wrong m/c the brakes could be just as bad as the stockers! For an e-brake I'm making a pinion mounted setup using a cable operated spot caliper. Thanks for the comments!

Aaron

 

[Mike K]

IF someone was building a serious track car do they need a park brake or are you guys trying to keep it for functionality reasons?

 

[ShelbyGuy]

a proportioning valve wont help as the terminators have four channel four wheel abs. this is why im trying to fabricate a balance bar dual master cylinder setup.



serious track cars dont have parking brakes. using the parking brake at the road course is a major no-no. leave it in gear and chock the wheels.

if you absolutely have to have a parking brake, wilwood makes a kart caliper that can act at one. thats hw i did it on my shelby.

 

[vipergts281]

serious track cars dont have parking brakes. using the parking brake at the road course is a major no-no. leave it in gear and chock the wheels.

I never knew that. What's the reasoning behind that? Does it have something to do with the rotors warping or something?

:read:

 

[Mike K]

I never knew that. What's the reasoning behind that? Does it have something to do with the rotors warping or something?

:read:

Reason why they dont have park brakes or reason why they dont use them out on the track? I assume you are asking why they dont have them on the car:

I think it is for 2 reasons.
1) if they upgrade the rear brakes they have to get rid of it anyway because the aftermarket calipers wont have the park brake setup
2) why would you be using a park brake on the road coarse? get rid of everything you dont use.

 

[vipergts281]

Reason why they dont have park brakes or reason why they dont use them out on the track? I assume you are asking why they dont have them on the car:

I think it is for 2 reasons.
1) if they upgrade the rear brakes they have to get rid of it anyway because the aftermarket calipers wont have the park brake setup
2) why would you be using a park brake on the road coarse? get rid of everything you dont use.

I am asking why they aren't used when the car is parked.

I am curious because he used the term "major no no". It sounds like a person would get yelled at/frowned upon if they used it.

 

[DaleM]

I never knew that. What's the reasoning behind that? Does it have something to do with the rotors warping or something?

:read:

Pad heat will concentrate on the rotor surface and warp (or worse in extreme case). I leave my car in gear. After stopping a couple minutes later I push the car forward (obviously back in neutral) to disperse some of that concentrated heat to another area on the rotor.

 

[vipergts281]

Pad heat will concentrate on the rotor surface and warp (or worse in extreme case). I leave my car in gear. After stopping a couple minutes later I push the car forward (obviously back in neutral) to disperse some of that concentrated heat to another area on the rotor.

Thanks. That's what I thought it was.

 

[Mike K]

Interesting, now i never thought of it that way!