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11-19-2005, 08:34 AM
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Hp loss due to Alcon brake kit?
Anyone out there know how much Hp is loss due to the Roush Alcon kit(13" rotor vs stock)? Think about it for a non-supercharged application.
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2001 Zinc Yellow S1+ 
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11-19-2005, 09:19 AM
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The only differance is that the car weights a little more with the Alcons
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2002 Sonic Blue GT Premium, Full S2 Conversion, Corbeau TRS Leather, Corbeau 3" Competition harnesses, Sparco Harness Bar, P-1SC StageII/8lb Intercooled ProCharger, 14" Alcons Now with MagnaPac side exhaust and O/R H! This thing is LOUD  2008 Roush Nitemare #3
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11-19-2005, 09:21 AM
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yes, there will be some hp loss to the wheels, because the diameter of the brakes is larger (unless you didnt change the rear's). The larger size creates more inertia. i remember someone with a brembo kit said they lost around 4-6hp to the wheels.
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 Performance Mods:Ebay CAI, Roush Side Exhaust Styling Mods:Full Roush S1 Body Kit, Roush Short Throw Shifter, 18in Roush Chrome Wheels, Blue Underglow, Blue Footwell Lighting, Autometer Cobalt Tachometer (5 1/2in), EuroStyle Guages Stereo: (Comming Soon) Diesel Audio NSH-12's, NS-1600, NS 1.5CAP
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11-19-2005, 01:27 PM
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Someone nees to weigh the rotors from stock to 13in and 14inch to figure out the hp loss. I would say less than 5hp total. jim
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#1 2001 One of a Kind 6 Speed - ROUSH Stage 3 Convert #01-019 Color: L2 Blue/Tan/Tan / ? RWHP AT 6000 RPM 6 PSI 380 TUNE/ ? RWTQ AT 3200 RPM 6 PSI 380 TUNE C&L Mass Air / C&L Intake Tube / Magnaflow Catted X Pipe / Roush Shorties / Exhaust(old school) / T-56 6 Speed (B) / Pro 5.0 Shifter / Jack Roush Shifter Handle / Mark Martin Shift Knob(from #6) / Dynotech Alum Driveshaft #12 / F.M. 8.8 DIFF. Packed / F.M. 3.73 Gears / 31 Spline Moser Axles / 10.5 IN McLeod Clutch / Kenny Brown Subframes / Roush Std Subframes / Kenny Brown Strut Brace #2 For Sale 2001 Roush 4X4 Expedition 1 0f 6 Lariats
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11-19-2005, 02:39 PM
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yea, nothing more than 6 hp lost tho. thats not too bad of a drop (i assure you, you wont notice the difference). and its a saftey thing too, cause you can stop faster.
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Performance Mods:Ebay CAI, Roush Side Exhaust Styling Mods:Full Roush S1 Body Kit, Roush Short Throw Shifter, 18in Roush Chrome Wheels, Blue Underglow, Blue Footwell Lighting, Autometer Cobalt Tachometer (5 1/2in), EuroStyle Guages Stereo: (Comming Soon) Diesel Audio NSH-12's, NS-1600, NS 1.5CAP
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11-19-2005, 05:34 PM
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Second, how much gas you have in the car will have a bigger weight impact than the difference in rotors.
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11-19-2005, 07:04 PM
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Thanks Steve. Good points.
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11-19-2005, 09:29 PM
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The last time I was at the track I weighed my car with a half tank of gas and the Roush PBR set-up and it weighed 3400lbs, Now with the Alcons on I did the same thing, Half tank of gas and it was 3430lbs.
I ran one one hundrenth slower with almost the same 60 foot, yet my E.T was up 1.5 MPH PBR set-up R/T- .501  60' 2.082 1/4 mile 13.255 @108.39 Alcon set-up R/T.585  60' 2.163 1/4 mile 109.99 Both times were on the same tires. BFG KD G-Force
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2002 Sonic Blue GT Premium, Full S2 Conversion, Corbeau TRS Leather, Corbeau 3" Competition harnesses, Sparco Harness Bar, P-1SC StageII/8lb Intercooled ProCharger, 14" Alcons Now with MagnaPac side exhaust and O/R H! This thing is LOUD 2008 Roush Nitemare #3 Last edited by sonicblue2002 : 11-19-2005 at 09:36 PM.
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11-20-2005, 08:14 AM
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You don't "lose" hp you just have to use more to get you car to accelerate. Also it has been said that 10 pounds of rotating mass (brakes, rims, tires, driveline, and transmission) can alter your quarter mile times by a tenth.
It is the same as if you put heavier rims on the car. You would get slower acceration. There is a bunch of formulas in physics that help to figure out these things but I haven't done that stuff in a long time. Heck if you feel up to it give Roush a call. Maybe they got some numbers they would share. Well maybe not as it is probably classified information and if your not driving one of their Nascars then your not allowed to know.   00Roush
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2000 Stage II Roush Mustang Auto KB 9psi supercharger with KB CAI Baer 13" brake kit in the front and Baer 13" rotor upgrade in the rear MM Caster/Camber Plates Steeda 5-link rear suspension Roush performance series gauge cluster with Roush boost and fuel gauges 1/4 mile: 12.18 @ 113.78 mph
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11-20-2005, 10:01 AM
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Just replace the flywheel with an aluminum one and then get the aluminum drive shaft! That should balance you back out and you get to keep your killer brakes!!!
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2003 Mustang GT w/Vortech Supercharger and Aftercooler. 10# boost. 04 Cobra Fuel System, BBK 75mm Throttle Body & BBK Plenum, Roush Stage III Body Kit, Roush Enhanced Sound Side Exhaust, Roush Stage 3 Suspension, Roush/Alcon F/R Braking System, Maximum Motorsports Caster/Camber Plates, Kenny Brown Strut Tower Brace, UPR Clutch Quadrant and Firewall Adjuster, Steeda Tri-Ax Shifter, JR Shifter Handle, Autometer Lunar Cluster, Lunar Fuel Pressure, and Lunar Boost Gauges, Roush Racing 18" wheels, Roush Leather Interior, Roush Floor Mats, BF Goodrich G-Force TA KD Tires, Ford Racing 3.73 Gears, Spec II Clutch w/ Aluminum Flywheel, Griffin Aluminum Radiator, Autologic Custom Chip, ROEA Member A-142
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11-21-2005, 02:17 AM
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Damn almost forgot about the flywheel!!
Now that I think about it I bet it would even out. 00Roush
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2000 Stage II Roush Mustang Auto KB 9psi supercharger with KB CAI Baer 13" brake kit in the front and Baer 13" rotor upgrade in the rear MM Caster/Camber Plates Steeda 5-link rear suspension Roush performance series gauge cluster with Roush boost and fuel gauges 1/4 mile: 12.18 @ 113.78 mph
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11-21-2005, 01:29 PM
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I agree with this assesment. Also the 13" kit is not a Alcon setup. Its a PBR/cobra/Bullitt setup. I had no hp loss when I installed mine. Just have more stopping power at speed.
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I am not a Psycho I just play one on a PC! 2000 Stg 2 KB'ed Vert ~ E9 2001 Expid-Harley conversion 2002 Mercedes CLK 430 Vert Trip-Black
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11-21-2005, 07:37 PM
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Performance Mods:Ebay CAI, Roush Side Exhaust Styling Mods:Full Roush S1 Body Kit, Roush Short Throw Shifter, 18in Roush Chrome Wheels, Blue Underglow, Blue Footwell Lighting, Autometer Cobalt Tachometer (5 1/2in), EuroStyle Guages Stereo: (Comming Soon) Diesel Audio NSH-12's, NS-1600, NS 1.5CAP
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11-22-2005, 06:34 AM
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Well definately no change in the flywheel HP. Slight to none on the rwhp.
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