new wilwood brake kit
 

looking pretty good i can't wait to put it on the car. have anyone have on their car how does it feel after install one of these
Attachment 195723
Attachment 195723
Attachment 195725
Attachment 195726

Don't have them, but this is really making me feel the itch again. I'm starting my brake parts buying this weekend, and thinking about it, Trackspeed front kit is only $600, vs. $120 for the BBK brackets, then another $100+ for the lines. That makes the Wilwood kit seem so much cheaper than last time I looked at them. I may end up saving the extra $300 for the Wilwood. Not the rear though, since my car is a daily driver, need the e-brake. That also means I have to get the new master cylinder too, I don't want to cheap out and regret it like I usually do.

OP, whose brackets are you using?

The stock master cylinder is not compatible with this?

I'm sure it is, but a recommended upgrade is a bigger MC, like the Wilwood unit. Trying to push that much more of a caliper with the same little puny stock MC pistons. Let Sav chime in. It's early, I'm out of my mind on my sleeping pills (couldn't go to sleep until I changed both of my front wheels out, damn flat)...

I was wondering about the new piston ratio. The TSE kit doesn't mention anything about a new MC though.

If Sav comes back...is your BBK compatible with my 01 that has the sport brakes? I know it says 90-97, just wondering what about it would be different in terms of the caliper carrier mounting points.

Get a bias valve and the stock master is fine. I have the trackspeed kit and its bomb.com.

What good does the upgraded MC do anyway? Larger fluid volume I would guess, along with maybe larger piston and shorter travel of the rod...?

If the MC piston is too small, you lose a lot of the braking feel....at least that's what happened with a bike I was working on. I'm sure there are a few other reasons.

Pedal ratio and general feel.

Should be nothing, we just never bolted it up to a Sport spindle so we weren't 100% sure. I think JayL replaced his Sport fronts with our BBK.

I don't recall the numbers off the top of my head, but the caliper we use is like 5% more piston area than stock. The DP6 caliper I use is like 3% more than stock. Not nearly enough to require a larger MC or any other consideration. The Sport MC is larger than the standard MC, which will provide a firmer pedal and better feel. The bias change comes from the larger front rotors.

The "upgrade" for the MC is the Sport MC. You need the booster as well and the lines don't quite match up, but you can make it work.

Well overall quality between stock and a wilwood should be an improvement, but you really only need a new MC if you need a different piston size from stock.

if you know the stock MC piston size, pedal travel to MC piston travel (ratio), stock caliper piston size, stock caliper radius, and pad surface area/coeff of friction, you could calculate stock braking force vs pedal force then figure out how that compares to using the stock MC with the wilwood kit.

actually, if anyone wants to give me all the stock specs I would be glad to make a spreadsheet to help peeps out.

Or you can man up to the 929 master/booster.

With that combo and your BBK, my 2700+ pound pig stops in a real hurry.

That's all over my head. Maybe i'll just stick with the stock MC :dunno: Then again I guess it wouldn't hurt anything to get the Wilwood. I'll see if I feel like springing the extra $200 for the MC. Could always do it later if I needed to for whatever reason.

There are much better places to spend $200.

Well you could just try the stock one and see how it feels. Without specs I cannot tell you what kind of difference it will be from stock, but the wilwood calipers should have more piston surface area than stock so that means with the stock MC, you will have to push the pedal further to achieve the same amount of caliper piston travel vs stock calipers.

But that should be offset some by the fact that the larger diameter rotors and larger pad surface area can create more braking torque vs piston force than stock.

So if I had to guess, expect a slightly longer brake pedal throw, but less effort will be needed on your part than the stock brakes (using the stock MC).

Stock piston area is 3.14" (2" piston IIRC), Wilwood area is 3.00" (twin 1.38" pistons).

I thought the wilwood caliper was a 4 piston design?

Wouldn't longer pedal travel give you more distance for modulation? Though I also don't want to have to push the pedal half way down to get enough force to stop in a hurry.

I have the same pedal throw from the stock brakes to the trackspeed.