Big Brakes!

[hyperboarder]

I'm upgrading my MC to the 929 Unit for the Wilwood 6 Pistons.... Why not... it cant hurt, and i'm sure the brakes would make use of it.

How hard/expensive is that mod? (the MC)

 

[daedalus]

How hard/expensive is that mod? (the MC)

I'm trying to pick up a used MC off of car-parts.com for about 25 bucks + shipping. There are some on ebay, but they arent the ABS version, and the ABS version they do have is about 145 bucks. I dont know. My guys at Transonic are telling me to spend the extra and get a brand new one.


How-to can be found here: http://www.msprotege.com/forum/showthread.php?t=72107&highlight=929+master+cylinder

 

[yellerandahalf]

damn! 25 bucks?! The cheapest I'm seeing on there is 75! I can get the brand new from mazda motorsports for 164 bucks. That seems ok to me. Maybe in the future.
-mateo

 

[low_psi]

I've been looking at Wilwood's catalog for parts that would work on a Protege and this is what I've come up with:

GT Series Fixed Mount Rotor Hats

• Rotor Bolt Circle: 8x7.00"
• Wheel Lug Pattern: 5x4.50"
• Hat Offset: .81"
• Stud Hole Diameter: .50"
• Center Hole ID: 2.66" or 67.56mm
• Face Thickness: .24"
• Clearance ID: 5.90"
• Mount Hole: 5/16-18

Part Number: 170-8320 Bolt Kit #: 230-8390

HD Series Rotors

• Diamter: 12.19"
• Width: .81"
• Bolt Circle: 8x7.00"
• Hole Size: .313"
• Far Side ID: 8.41"
• Lug ID: 6.38"
• Weight: 9.5lbs

Left PN: 160-7706 Right PN: 160-7705

Billet Dynalite Caliper

• Bore Sizes: 1.38", 1.62" & 1.75"
• All for .81" Discs
• PN's vary
• Width: ~4.15"

If someone wants to do the calcs for piston bore diameter feel free. Otherwise I'll do them sometime... When I swap my new rotors on I'll get some measurements from the hub and existing caliper mount. I've already CAD'd the Wilwood parts, so I can put them on the hubs asap. I could also make a template to check for caliper clearance too, I guess...

The Wilwood rotors I listed are a tad thinner than OEMs but it shouldn't be a concern, the vanes and the rotor should keep things cool.

 

[yashart_mp3]

bump... Low_psi, keep up the good work

 

[low_psi]

anyone interested in a DIY kit? I can make the caliper brackets and brake lines then let the owner buy the Wilwood parts. I'm gonna look into a thicker rotor than the .81" one I have listed above.

I've decided to keep my stock brakes for awhile since the local track isn't too rough on brakes. If a DFW guy wants to upgrade to the Wilwoods, I can use their car for test fitting everything.

 

[gar777]

I mean I'm experiencing brake fade. Whether it's pad fade or boiling fluid I do not know. I am running carbotech bobcats on all 4 corners on the street (which is where the most recent fade has occurred, on an AWESOME section of downhill). I run bobcats on the rear and panther plus on the track, but haven't been back since I've got the new power. However, on challenging sections of road, I have experienced fade where I did not before, even at a measly 11psi (run 16psi on track).

All of the ideas posted here are very interesting but before spending big $$$ I would suggest you try more aggressive pads and one of the different fluids suggested. If that doesn't do enough, you could add cooling ducts to get even more low $ performance. SCCA racers in SS and IT classes have to stay with the stock rotors and calipers and do fairly well changing only the pads and fluid and (of course) tires.

I use Carbotech XP9 pads with ATE Super Blue fluid and r-compounds and haven't notice much fade, but I am n/a so my speeds aren't as great as a modded MSP. The other consideration may be your tire compound and braking style. If you are on the ABS alot, that will cause the temps to skyrocket and a stickier tire may help. For a relatively light car like ours, the stock brakes are really pretty decent, as shown by the SS and IT racers.

 

[low_psi]

Yep, with EBC yellows upfront and Motul fluid, the stock brakes have been pretty sufficient with no noticable fade... that's why I'm waiting on upgrading to larger rotors/calipers

 

[Action Jackson]

You'll find a lot of useful info here:

http://www.protege5.com/vbb225/showthread.php?t=117091

 

[yellerandahalf]

Ok, car(MSP@~250whp) underwent track testing a few weeks ago. XP10 front/XP8 rear pads, super blue fluid. Didn't actually notice any fade. Problem was, the car blew up on the third lap of the second session, so I didn't really have a chance to beat on them hard. DOH!!!
-Mateo