http://www.zeckhausen.com/testing_br...rmance%20Model

Results are pretty interesting.

 

very good find jeffy' too bad they didnt get to finish up on the last set though

 

I would like to see what the stock brakes do with Slotted rotors and aftermarket pads.

Good test though, the BBK's stay much cooler.

 

Probably worse than stock

 

In what terms? Brake dist or temps? Brake dist probably won't do anything.

Brake temps is a tough one. Drilling a bunch of holes might allow the heat to dissapate faster but it won't PREVENT the rotor from heating up. It actually might heat UP faster and HOTTER because you just took out a bunch of mass that was helping the rotor absorb heat at a slower rate.

Imagine heating up a piece of scrape steel. (original rotor). Note how fast it heats up and how fast it cools down. Then note what it looks like after.

The imagine heating up a piece of wire. ie.. 18 ga for instance. (slotted/drilled rotor) Note the same as above.

What differences do you observe in between the two?

 

The rotors in a BBK are often times heavier than the stock ones. So even if the pad swept area is larger and it has a higher friction coefficient, you're trying to slow down more reciprocating mass. So you don't always get more stopping power even if you feel the additional brake torque.

But larger rotors and much larger calipers are more effective heat sinks with sustained heavy braking.

Besides, it doesn't matter how great your brakes are at slowing the wheels from spinning, its still totally depending on the tires.

It is a good article though. I've read it before.

 

WTF, post orgasm of like 10 double posts, lol.

 

helldorado. Thanks for the input and good points.

You check the weights of the oem 14" Akebono oem rotors for the G37 sport? Someone said 28lbs! Holy moly!

 

Good find man!

 

interesting...

 

who cares if they stop you better than stock

BBK IS BALLIN

 

+1

That's the key point right there. Other than looks, of course .

 

I didn't weigh my 14.25" AP Racing rotors but I would imagine they're just slightly lighter than that with the 2 piece hat. Either way, the full assembly was substantially heavier than stock.

 

I care at least. If I'm going to spend that much $ for brakes, it had BETTER perform superior to stock in SOME way. Most believe BBK = way shorter brake distances but it's not as true as most would believe.

I guess it's one of my pet peeves regarding all these mega big/20 piston bbk kits you see. All bling and no real data.

Only Stoptech and Racing Brake seem to offer any real explaination to their kit sizes, bias and tech ingo. I know AP makes high quality products also.

But the rest of these kits? Who knows? They're shiny I guess.

 

Exactly.