S550 Peformance Package (6-Piston Brembo) on S197

[fast Ed]

Ed: Are you able to confirm the bore diameter of 1.063"? I'm using it to calculate hydraulic force to compare caliper options.

It looks like the above linked BMC is only for 2012-2014 models, but the cylinder diameter is the same across S197 MYs.

Sorry, the Ford parts catalogue nor the service manual are showing the m/cyl bore diameter. The Dorman listing shows the correct OE numbers, the 2010-2013 cylinders all change to the same Ford number from 2014 which is DR3Z 2140 A.


cheers
Ed

 

[Sky Render]

What lines are you using? Because I was under the impression that all the calipers from '05-14 used the same fittings.

 

[2Fass240us]

What lines are you using? Because I was under the impression that all the calipers from '05-14 used the same fittings.

I more bought the setup to flip and develop some tech, not run on my car, so I haven't purchased lines.

But since you asked ... I've been told the Russell kit Amazon.com: Russell 693380 Brake Hose Kit for Mustang 05: Automotive@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41gYa4JyDWL.@@AMEPARAM@@41gYa4JyDWL will work. It also includes 4 lines so you're set for the rear too. BUT...if you look at these versus the below, linked lines, the caliper ends are not the same, leading me to believe all 05-14 lines are not the same. I'll take a look at my non-Track Pack calipers next time I have the car on stands.

OE lines for the 13/14 GT500 are DR3Z-2078-A and DR3Z-2078-B, $27.36 each through Tasca. These should be fine for street use but you might want something else for track use.

 

[Sky Render]

Yeah, then theoretically you don't need different lines. Although it would be kind of stupid to use rubber lines on a 6-pot Brembo setup, those are the exact same fittings as the stock lines.

 

[2Fass240us]

Has anybody actually run this setup on a car yet? (besides just determining that they fit) I'm concerned that the piston volume of the '15 caliper vs the previous 4-piston would seriously screw up the bias, especially with a master cylinder designed for the smaller 4-piston caliper. Has anyone calculated the volume difference between the two?

I don't think bias is an issue at all; see the volumes below. The "base" GT piston area is actually the largest of the bunch. The other setups make up for lost Clamping Force with an increase in Effective Diameter, which yields an increase in Wheel Torque of 9% with the 13/14 GT500 caliper and 8% with the 2015 GT PP caliper.

Piston Diameters (mm)
05-14 GT: 43, 43
07-12 GT500: 44, 40
13-14 GT500: 38, 34, 30
2015 GT PP: 34, 34, 34

Piston Diameters (inches)
05-14 GT: 1.69, 1.69
07-12 GT500: 1.73, 1.57
13-14 GT500: 1.50, 1.34, 1.18
2015 GT PP: 1.34, 1.34, 1.34

Piston Area (one side of caliper)
05-14 GT: 4.50 in^2
07-12 GT500: 4.30 in^2
13-14 GT500: 4.26 in^2
2015 GT PP: 4.22 in^2

 

[DTL]

Interesting, thanks for digging that up! I'm intrigued by this swap, but I'd like someone else to be the track guinea-pig first!

 

[Kyle500]

I picked up a set of S550 Performance Package front brakes late last year and am finally getting around to test-fitting them. While the 6-piston setup from the '13/'14 GT500 seems to have some tech, the S550 PP one does not. If this has been covered in another thread, please LMK and I can move the content there.

I took measurements on the S550 rotor using a dial caliper for all but the diameter, and used Centric data from Rock Auto on the GT500 one. I will likely buy a GT500 rotor to confirm measurements and do a physical test-fit.

Biggest differences:

• The GT500 rotor is 1.26" thick versus the S500 one being 1.34"
• The effective hat offset for the GT500 rotor is 0.232"* versus the S550 at 0.868"

*Need to confirm after buying one

Test-fit on S197 spindle with full S550 setup:

Creating offset using spacers between the spindle and rotor, to simulate estimated GT500 offset:

This is close but I still need the GT500 rotor to confirm:

2fass240us, can u upload your photos again please? Since it seems were erased from here, thanks.