big brake kit.

[sickyute]

so rotora and brembo ... not as good as stoptech?
design not the same or close?
not starting anything here ...
the more info. the better ...
i u know anything about the design and habbits of rotora and brembo compared to that of stoptech... please feel free to comment ...

the more info. the merrier.

[blaznhot_23]

to shed some llight on the situation...

brembo: uses in the GT spec systems a extremely large two piece drilled rotor w/ a billet alum hat center piece. this aids in rotating mass of the entire assembly. they also use a very high friction material pad to help braking performance. the caliper is a cast type multi piece 4,6,and 8 piston setup (depending on the app) w/ high manufacturing tolerances... built with specs from the race line up. also not sure if you get SS brake lines w/ this set up

rotora: uses a one piece drilled and slotted large diameter rotor...its coated on areas prone to corrosion to enhance its looks. the caliper is a 2 piece cast 4 piston unit w/ street performance pads...can be upgraded w/ their ceramic race version. which can be a good/bad thing...also includes SS brake lines

stoptech: uses a forged aluminum 4,6, and 8 piston set up for the caliper. includes very large rotors...can be either drilled or slotted and are a two piece construction w/ a billet aluminum hat center piece. includes high performance pads...either axxis, pagid, or bhp pads...you choose the options. also includes SS brake lines...

[sickyute]

makes rotora sound bad... lol

[blaznhot_23]

check out wilwoods spec on their brakes...

full brake kit:
http://www.wilwood.com/BrakeKits/Pages/04/index.asp

for the price i like wilwoods...dependable and very excellent craftsmanship

[sickyute]

i saw that...
but is that the exact same stuff fastbrakes use? cuz they are the only ones i know of right now with those kits.

[sickyute]

maybe i'll give stoptech another ring + email to see what's up before i take the plunge..

[blaznhot_23]

Originally Posted by sickyute

i saw that...
but is that the exact same stuff fastbrakes use? cuz they are the only ones i know of right now with those kits.

fastbrakes is a dealer that uses wilwood products...ironic wilwood is about 45 mile east of me... i think tomorrow....whoops i mean i mean later this morning... i will call them and get the specifics on the kit the y distribute to FB

[sickyute]

[cappykd]

Originally Posted by blaznhot_23

fastbrakes is a dealer that uses wilwood products...ironic wilwood is about 45 mile east of me... i think tomorrow....whoops i mean i mean later this morning... i will call them and get the specifics on the kit the y distribute to FB

[CZ-75]

Originally Posted by blaznhot_23

he might have had a bad experience. its like saying you had a bad experience w/ your si...and then making a conclusion that all si's are bad because of that incident. From my past experiences...wilwood is just as good as some of the bigger names out there. as i mentioned in a earlier post i used a set on a 69 C10...a 3 ton truck on 22/24 inch staggered wheels. No hiccups what so ever w/ the install and braking performance was dead on...by the way it was a complete kit. I would go with them based on my past experience. just my .02$

I don't know if Wilwood are good or bad, but I do know that unless things have changed recently, they are meant for track use, rather than street use because they lack the dust seals on their pistons to keep road grime out. If you do use them on the street, they will need a rebuild every year or two to be safe.

[CZ-75]

Originally Posted by blaznhot_23

to shed some llight on the situation...

brembo: uses in the GT spec systems a extremely large two piece drilled rotor w/ a billet alum hat center piece. this aids in rotating mass of the entire assembly. they also use a very high friction material pad to help braking performance. the caliper is a cast type multi piece 4,6,and 8 piston setup (depending on the app) w/ high manufacturing tolerances... built with specs from the race line up. also not sure if you get SS brake lines w/ this set up

rotora: uses a one piece drilled and slotted large diameter rotor...its coated on areas prone to corrosion to enhance its looks. the caliper is a 2 piece cast 4 piston unit w/ street performance pads...can be upgraded w/ their ceramic race version. which can be a good/bad thing...also includes SS brake lines

stoptech: uses a forged aluminum 4,6, and 8 piston set up for the caliper. includes very large rotors...can be either drilled or slotted and are a two piece construction w/ a billet aluminum hat center piece. includes high performance pads...either axxis, pagid, or bhp pads...you choose the options. also includes SS brake lines...

Do you know what sized pistons are used for each kit? That's a crucial bit of info to make comparisons.

[blaznhot_23]

Originally Posted by CZ-75

Do you know what sized pistons are used for each kit? That's a crucial bit of info to make comparisons.

brembo: 36-40 mm piston size for their 4 piston unit

rotora: their piston size is manufactured specifically for each veh...so i'm not sure

stoptech: depending on what caliper you use the piston size will vary from 28-44 mm on the st40 4 piston unit

[aki]

Originally Posted by cappykd

Many will say "cross drilled rotors cool better". Hmmm. If you really look at it, how much air do you think can blow through those little holes? Add the fact that they are spinning at a reasonably high speed and the cooling argument becomes even less believable. In fact, the holes could, in theory, disrupt the natural draw of air from the center of the rotor to the outside edge. That is the flow that actually cools the rotors.

The purpose of cross-drilled rotors is not for air to blow through them, it's to serve as a heat sink with the increased exposed surface area.

Also, there's is some debate as to the durability of cross-drilled rotors; some say rotors cracking in them are a result of poor manufacturing. Whether that's true or not I'm not sure, but I think slotted rotors are safer in general.

[blaznhot_23]

Originally Posted by aki

The purpose of cross-drilled rotors is not for air to blow through them, it's to serve as a heat sink with the increased exposed surface area.

Also, there's is some debate as to the durability of cross-drilled rotors; some say rotors cracking in them are a result of poor manufacturing. Whether that's true or not I'm not sure, but I think slotted rotors are safer in general.

in contrary to what you are saying cross dilling was intended for "outgassing" its a term used in racing that gave brake gases a place to go while giving the driver a btter brake pedal feel. this process occurs at racing temps, but now these days many pads because of their composition will exihibit these characteristics as well. although cross drilling provides a welcome path for brake gases for when and if they do develop, cross drilling is primarily a visual effect for the open wheel design. now cracking due to stress is an issue, but if you go with a high quality brake company they do take this into account whne the manufacture their rotors. venting the disc is primarily the job of the vanes that are put into the rotor...depending on the angle is to how much air will flow through them....

i'll go ahead and do my best at explaining the purpose of slotting as well...slotting also hepls in the outgassing effect as well. mainly slots in the rotors in a sense "micro-shave" the pad to help de-glaze or prevent glazing from building up. when you have glazed rotors we all know that braking performance is decreased tremendously....so most manufacturers do not chamfer or radius the edge of the slot for this reason....

the combination of both cross drilled/slotted rotors from a high quality brake manufacturer can help decrease braking distance by providing decreased brake fade along w/ better pedal firm to an extent....

[aki]

Originally Posted by blaznhot_23

the combination of both cross drilled/slotted rotors from a high quality brake manufacturer can help decrease braking distance by providing decreased brake fade along w/ better pedal firm to an extent....

I knew the outgassing about cross drilled, I had a brain fart about the surface area--the increased surface area does not dissipate heat better, as metal is a better sink than air. I flipped it around.

I disagree about a combo of cross-drilled/slotted rotors being the best. Quite frankly, cross-drilled are completely obsolete as you said, and are only there for aesthetics. If you wanted to get rid of the boundary layer glaze, you could simply get slotted rotors. Sure the manufacturing process improved, but holes still disrupt the structure of the rotor, and cause inconsistent wear on the pads. They're not worth it. Slotted w/o cross drilled seems the best for hard braking. There's good reason why cars on Lemans, JGTC and WRC don't have cross drilled rotors.

Edit: hmm, it seems some kits are designed for front only, like the Stoptech BBK? I guess it doesn't need the rears then. But kits that come in 4s (front left/right and rear left/right) should be upgraded in 4s.

[sickyute]

i'm not going to purchase any rotor that's drilled... that i had known from day one.

i'll try to get confirmation as to if the rotoras are drilled or slotted or a combination of both ....

[blaznhot_23]

Originally Posted by sickyute

i'm not going to purchase any rotor that's drilled... that i had known from day one.

i'll try to get confirmation as to if the rotoras are drilled or slotted or a combination of both ....

marvie...they are both drilled and slotted. I looke don the website and i called vivid racing which distibutes them

[sweger]

comptech has the Brembo 13" kit, i think that their best one for out cars. but it is expensie, in the tune of 2600

http://www.comptechusa.com/store/product1550.html

[bossman]

Originally Posted by sickyute

but stoptech doesn't have a BBK yet....
so that only leaves...
TL kit ....
brembo kit
rotora kit

What about Project Mu big brakes?I know I've seen them on an Si before but it was in a magizine article.I don't remember if I saw them for sale when i went to the company site.just another option to look at.

[sickyute]

Originally Posted by bossman

What about Project Mu big brakes?I know I've seen them on an Si before but it was in a magizine article.I don't remember if I saw them for sale when i went to the company site.just another option to look at.

i refuse to spend what projuect Mu is charging on a BBK ... maybe i would ... but the teal color is not helping them ... no that's a no no ...

Originally Posted by sweger

comptech has the Brembo 13" kit, i think that their best one for out cars. but it is expensie, in the tune of 2600

http://www.comptechusa.com/store/product1550.html

brembo looks good also ... but the price is ridiculous ... it's brembo i know but i refuse to spend that much on a bbk even if i'll probably end up doing so.

i'll wait on stop tech in the mean time ... the pricing will probably be close to that of brembo ... so be it

it nice to buy the bbk ... but u must remember u'll need pads every now and then too ... brembo bbk pads don't come cheap either ... lol