Why does J's racing use the spoon calipers? The front wheel offset is 17x8.5 +25 right? Can you fit the J's racing brake kit (basically Endless) behind the a ce28n of that siza or what?

 

I thought J's used their own (Endless) kit, if they aren't, it must be because of some class rules they were racing in that wouldn't allow BBK's.

 

because spoons are lighter. and they have their race car under 1000kg so huge 6pots aren't needed. Not to mention, too much braking power in the front without upping the rears will throw the braking balance way off.

 

That is true bluesaint, but remember, an Endless BBK will not yield much more stopping power than Spoon calipers. The size of the brakes isn't nearly as important as tires and brake pad material when it comes to stopping power. A BBK main purpose is to last longer because of better cooling.

A spoon caliper equipped car with race pads or R compound tires will stop much shorter than an Endless BBK equiped car on street pads and tires.

 

I understand what you are saying but I don't think it is accurate. The endless usa site says the endless calipers for the s2000 are 6lbs. and the spoons are 2.6kg which is roughly 5.72lbs. I don't think J's is too worried about .5lbs. And the endless brakes probably don't make the car stop any faster but one would think they would be prone to fade less due to the larger rotor and extra pistons. But my question is really do you think endless (J's) brakes would fit behind 17x8.5 +25 ce28ns? And isn't it strange they use spoon calipers when endless are supposed to be one of the best for racing. Especially when it has the J's brand on it!!

 

That is not entirely true. Yes a BBK will make your car stop faster. Because of the extra mass, it has more surface area. Therefore it can absorb more heat and be more efficient. You also have more fade resistance for repeated stops.

 

Not always... In that s2000 shoot in one of those new magazines the stock brakes out braked two other set's of bbk kits (in stopping distance). Of course the bbk is still better because of the fade the stock's will experience

 

Okay let me rephrase that, a properly designed BBK will give you shorter stopping distances. Some of the wilwood kits are not better than stock, they just look better. Higher end companies are superior to stock and will always be.

 

Just a thing to add.

One stock S2000 and one S2000 with Endless stopped having the same speed, and the result was that the stock took much longer to stop. The Endless brakes DO work a lot!

This was a actual comparison between two friends of mine.

 

I think that there is a lot of "armchair" testing going on with regards to OEM braking vs. aftermarket systems.

To be fair (and this isn't at all a shot at you, kayvan_pour), magazines say A LOT of things. We've all seen ridiculous power reports and other craziness come out of these rags with very little of it being true.

Everyone is very quick to spout off facts that they have heard from someone, or read somewhere, but unless you've done testing of the setups yourself or have been witness to such testing (as energetic said), then you really can't say difinitively that all BBK don't stop faster or slower than OEM sized setups. Again, not flaming anyone, there is just a lot of hearsay passed off as fact on internet forums

As for J's and their big brake kit, it may well be that there were class restrictions on rotor size in the race you saw a pic from (and thus needed something that they could use with the stock rotors as I believe the Spoons can be, but correct me if I'm wrong). It could also be possible that they were testing different parts at different times (those J's cars change components more than I change my underwear) Or maybe they took that pic before the J's kit was released?

I don't know, but it could be a lot of different things