OEM Big Brake Kit

[Khorne]

So this seems pretty cool.

http://www.racingbrake.com/322x25mm-.../2127-k-01.htm

From this thread http://www.ft86club.com/forums/showthread.php?t=59888

Seems like a good alternative from a BBK while keeping OEMness.

Any thoughts?

[migueralliart]

That price doesn't look that bad. The only showstopper here is there are no tests or data to compare. I understand that by going to a bigger rotor and more radially positioned caliper there is an increase in stopping power but it would be cool to see the data.

[gramicci101]

And it uses their 322mm rotor. What is the availability for other rotors besides RB?

I've considered making a bracket to allow use of a 326mm rotor from a 2004 STi (5x100). Since it's an OEM size, a lot of companies make replacement parts. The offset of the STi rotor is 4mm lower than the BRZ rotor, so the bracket would have to take that into account. I'd probably do the rear rotor too (316mm), since it's the same offset as ours. I had a long talk with CSG about brake bias and heat absorption and dispersion. I think a genuine BBK would be better for track usage, but this would definitely fill the street usage niche.

[wparsons]

These cars don't need more braking power, with better pads you can easily lock up even the stickiest of tires with the stock size rotors and stock calipers.

If you need more thermal capacity, or want easier to change pads (or less cost in the long term if you track a lot), then a BBK can help, but it won't make you stop any faster if you can already engage ABS.

[Turdinator]

Also wouldn't installing a bigger disk on the front with the same stock caliper bring the brake bias forward?

[troek]

i would assume so.

[Poodles]

Originally Posted by wparsons

These cars don't need more braking power, with better pads you can easily lock up even the stickiest of tires with the stock size rotors and stock calipers.

If you need more thermal capacity, or want easier to change pads (or less cost in the long term if you track a lot), then a BBK can help, but it won't make you stop any faster if you can already engage ABS.

That's not the point of a BBK. Even the worst cars on the road can do an emergency stop safely...once. BBK is to allow you to do it over and over in a racing setting.

Originally Posted by Turdinator

Also wouldn't installing a bigger disk on the front with the same stock caliper bring the brake bias forward?

A bit, but the vast majority of your braking is done by the front anyway. If one was to make the rear lock up first, it would be dangerous..

[wparsons]

Originally Posted by Poodles

That's not the point of a BBK. Even the worst cars on the road can do an emergency stop safely...once. BBK is to allow you to do it over and over in a racing setting.

I'm fully aware, my post was in regards to this one:

Originally Posted by migueralliart

That price doesn't look that bad. The only showstopper here is there are no tests or data to compare. I understand that by going to a bigger rotor and more radially positioned caliper there is an increase in stopping power but it would be cool to see the data.

[OrbitalEllipses]

Originally Posted by gramicci101

And it uses their 322mm rotor. What is the availability for other rotors besides RB?

I've considered making a bracket to allow use of a 326mm rotor from a 2004 STi (5x100). Since it's an OEM size, a lot of companies make replacement parts. The offset of the STi rotor is 4mm lower than the BRZ rotor, so the bracket would have to take that into account. I'd probably do the rear rotor too (316mm), since it's the same offset as ours. I had a long talk with CSG about brake bias and heat absorption and dispersion. I think a genuine BBK would be better for track usage, but this would definitely fill the street usage niche.

Legacy GT fronts are a bolt on affair - with the dogbone and caliper you can fit 316x30mm OEM rotors. Though you will need to swap them from side to side to get the bleeder valves oriented correctly (IIRC the caliper isn't differentially bored).

[Dave-ROR]

Originally Posted by Poodles

That's not the point of a BBK. Even the worst cars on the road can do an emergency stop safely...once. BBK is to allow you to do it over and over in a racing setting.

A bit, but the vast majority of your braking is done by the front anyway. If one was to make the rear lock up first, it would be dangerous..

Many of us here understand this. His post was in response to those who think a BBK is needed for "stopping power" and the guy who mentioned that the larger rotors with stock caliper would be enough for the street drivers.

Smaller brakes on this car would be enough for street use.

Too much front bias is just as bad. No rotation so "safer" (if you consider running into something head on safer) but ABS activation earlier than needed reducing overall effectiveness of the braking system. Ideally all four should lock at the same time in a straight line.

[Dave-ROR]

Originally Posted by OrbitalEllipses

Legacy GT fronts are a bolt on affair - with the dogbone and caliper you can fit 316x30mm OEM rotors. Though you will need to swap them from side to side to get the bleeder valves oriented correctly (IIRC the caliper isn't differentially bored).

This is what I was going to initially do until examing the consumables cost (and other) benefits of the direction I went instead.

[gramicci101]

Originally Posted by Dave-ROR

This is what I was going to initially do until examing the consumables cost (and other) benefits of the direction I went instead.

What direction did you go instead?

[Dave-ROR]

Originally Posted by gramicci101

What direction did you go instead?

http://www.essexparts.com/shop/compl...86-bundle.html

[gramicci101]

Originally Posted by Dave-ROR

http://www.essexparts.com/shop/compl...86-bundle.html

Did you do anything to the rear brakes? If not, do you feel like the brake bias has shifted forward with the much more capable front brakes?