Ok, so now im looking for an upgrade to the stock brakes on my AP1. At the track I am getting some fading and could use a bit of an increase in stopping power, even though the stock calipers/rotors with Gransport GS3's are incredible in my eyes. I have been doing some searching on this forum and see what looks like my only options for using the stock rims are Spoon and Willwood with the spoon requiring 15mm spacers.

Will the spacers affect handeling in any way, how so? I do like the idea 9lbs weight savings per side with the wilwood, but the increased modulation i dont know about.

Does anyone have anything to add or suggest? preferably people who have tracked their s2k.

 

the other thing I forgot to ad was, will I need to adjust the brake balance since there in increased power in the front?

 

you may also consider rotora calipers, from what I hear, they are pretty good and inexpensive.

 

i too would like to know about this

 

they wont fit under the stock wheel. I am using stock rims. and at almost $2000, they sound like they are the more expensive route of the bunch. The stopping power with the stock calipers is good, im not looking to go over board with it becuase there simply is no need. The only use I would like is to have a bit more stopping power and the ability to reduce the fade in the brakes with increased pistons.

 

I have Spoon calipers with stock rims and spacers of 20mm. The car looks is much better and handling also improve. No disavantage i get notice till now...i also have project MU SCR-Pro discs and Ferodo DS3000 for the front and DS2500 for the rear...

I do a lot of track days with sessions of 30m and the braking is just fenomenal Nice upgrade compare to the stock one.

If you wanna see some photos, i can get you....since now the car is not like this way i express above, i still have some photos for everything of my Black Pearl Project

 

I had Sherwin's original wilwood dynalite upgrade and went to a few track events on them...

The good thing is that it fits under stock wheels... BARELY. Actually, the calipers move when you brake, so the caliper will rub the inside of your wheel ever so slightly (I think). Once you've done this once or twice, your caliper won't hit it anymore and you'll have a couple of nice parts of your caliper scratched off, closest to the center of the wheel.

I said "I think" because I got the calipers in this condition already. It did not happen on my car. But I did notice the flex when I hit the brakes. At first it concerned me, but it ended up not being a problem with regards to performance. Also keep in mind that the kit I had was the original prototype kit, so maybe others with the final production kit didn't have this problem.

It didn't really matter to me, as this was mostly cosmetic and I got the brakes used at a steal!

Another good thing about the wilwoods is that the pads and rotor as really cheap and readily available. I think the front pads are all in the $50 range and come in many flavors.

The 9lbs of unsprung weight savings is really noticable. The steering is alot lighter.

The braking power is much improved over stock, and I never had fading problems like I did with the stock brakes. I don't know how these compare to other brakes, as I've only had the wilwoods on my S.

The wilwood kit did not require me to adjust braking bias.

A bad thing, that sherwin tried to say was a good thing, was that the pads were held in place with a single cotter pin. He said it's good for easy pad changes without removing the caliper. I felt it was a bad thing because

1. you always have to carry extra cotter pins (not a big deal) and...

2. while you can easily remove the pads, if you try to replace old pads with new pads, you can't really push the pistons back without swinging the caliper open anyway.

HTH

 

Oops..just to clarify my last post:

- I have an AP2, but the above was in reference to my AP1 and 16" stock wheels.

- The 9lbs unsprung weight savings is per wheel.

 

I had the Spoon calipers ever since I bought the car. Modulation has been and stopping power has been improved on mid-Speed to high speed.

One thing I like about is, I can easily get replacement rotors and pads.

 

I have always been hesitant to use spacers, you are putting all that much more stress on the stud bolts. My logic tells me putting spacers on the front wheels only increases the ability to corner (grip), however the car will rotate easier now due to this setup, something which I have been trying to get rid of. I have been getting all my things through you guys at AJ thus far (is that you Ben on there?).

I love the idea of reducing the rotational mass for power gains, however I love heavy steering. My track EF has a manual rack with a quick ratio rack and pinion (which makes it feel like the rack and pinion is moving in cement), and my 944 I used to have had perfect weight to the steering.