new wilwood brake kit
4 Attachment(s)
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.
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OP, whose brackets are you using?
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Originally Posted by NA6C-Guy
(Post 605746)
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.
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Originally Posted by dgmorr
(Post 605768)
The stock master cylinder is not compatible with this?
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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.
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Originally Posted by hustler
(Post 605806)
Get a bias valve and the stock master is fine. I have the trackspeed kit and its bomb.com.
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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.
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Originally Posted by NA6C-Guy
(Post 605817)
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...?
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Originally Posted by dgmorr
(Post 605802)
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. 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. |
Originally Posted by NA6C-Guy
(Post 605817)
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 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. |
Originally Posted by Savington
(Post 606467)
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. With that combo and your BBK, my 2700+ pound pig stops in a real hurry. |
Originally Posted by cardriverx
(Post 606509)
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. |
There are much better places to spend $200.
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Originally Posted by NA6C-Guy
(Post 606626)
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.
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). |
Originally Posted by cardriverx
(Post 606756)
but the wilwood calipers should have more piston surface area than stock
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Originally Posted by Savington
(Post 606779)
Stock piston area is 3.14" (2" piston IIRC), Wilwood area is 3.00" (twin 1.38" pistons).
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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.
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Originally Posted by cardriverx
(Post 606787)
I thought the wilwood caliper was a 4 piston design?
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Originally Posted by cardriverx
(Post 606787)
I thought the wilwood caliper was a 4 piston design?
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Yep, and therefore you only use "half" the pistons for calculating piston area on a fixed caliper.
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Originally Posted by hustler
(Post 606819)
I have the same pedal throw from the stock brakes to the trackspeed.
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Originally Posted by y8s
(Post 606826)
it is. but each piston only moves half the distance. same fluid volume.
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Originally Posted by y8s
(Post 606826)
it is. but each piston only moves half the distance. same fluid volume.
The part that's confusing until you get your head around it is that the force applied by any caliper (assuming 100 percent efficiency) is equal to the circuit pressure times the pistons on one half of the caliper. For a one- or two-piston slider, you calculate the force using all the pistons. The equal and opposite reaction force that keeps the caliper from shooting sideways (after it shoots sideways a little on its pins and everything equalizes) is provided by the outboard portion of the clamp. With a fixed caliper, you calculate the force using half the pistons. The equal and opposite reaction force that keeps the caliper from shooting sideways is provided by the opposing pistons pushing on the other side. |
Originally Posted by SolarYellow510
(Post 607491)
Not exactly. The pistons are pulled back from the pads slightly by the pressure seal, which will be approximately the same for a slider with pistons on one side and for a fixed caliper with pistons on both sides. So the fluid displaced before a fixed caliper starts doing work may be slightly greater. Where a well-designed fixed caliper gains is in stiffness, so less fluid is displaced as force builds, providing a firmer pedal with less travel and many other advantages.
The part that's confusing until you get your head around it is that the force applied by any caliper (assuming 100 percent efficiency) is equal to the circuit pressure times the pistons on one half of the caliper. For a one- or two-piston slider, you calculate the force using all the pistons. The equal and opposite reaction force that keeps the caliper from shooting sideways (after it shoots sideways a little on its pins and everything equalizes) is provided by the outboard portion of the clamp. With a fixed caliper, you calculate the force using half the pistons. The equal and opposite reaction force that keeps the caliper from shooting sideways is provided by the opposing pistons pushing on the other side. |
yep.
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