Butch is a moderately
modified 911SC with the
classic mid-70s RSR IROC
appearance.  

The goal is to compete in
middle-tier classes in POC
and PCA Club Racing and
Time Trials with an exciting
and agile, but highly reliable
and relatively affordable
Porsche 911.
Mission
Statement
“Butch” Build Sheet  
         
    April 11, 2014

    1978 Porsche 911SC Coupe      9118200999
    Engine:         930/06                       6580858
    Transmission:        915/61           170410

    SAFETY & INTERIOR:
    Welded in Full Roll Cage (Autopower Industries),  DOM Steel Tubing 1.50”x0.120”
    High-Density SFI-45.1 Roll Cage Padding
            Driver Restraint:    (6-point) Schroth Profi-2 HANS,  Valid through 2019
       Passenger Restraint(Optional):    (6-point) Autopower PC106,  Manufactured Dec-2013
       Oasis SFI-27.1 Window Net (Attached to Roll Cage)
       Driver Seat:                  Recaro Pro-Racer SPG XL, dated Jul-2004  (with Side Mounts)
    Passenger Seat (Optional):        Cobra Imola S, dated Apr-2007  (with Sliders & Side Mounts)
    I/O Port Seat Back Brace (Driver)
    Stripped Interior (All Carpeting, Panels, Rear Seats)  
    Stock Dashboard & Instruments
    RacePak Data Systems IQ3 DataLogging Dashboard System
    RS-Style Door Opening Pull-Straps
    Stepped Block Accelerator Pedal
    12V Power Connectors (Amp )
    Cool-Shirt System CS-12
    Autopower 00100 Video Camera Mount (Roll Cage between/behind Seats)
    Sparco 383 Suede Steering Wheel with Quick-Release Hub
    Wink 5-Panel Rear View Mirror
    Wevo Classic 915 Shifter with Momo Anatomico Shift Knob
    Removable/Adjustable Ballast (Passenger Footwell) Up to 15 x 10 lbs  plus  8 x 25 lbs

    BODY & EXTERIOR:
    Exterior Paint Color; Petrol Blue Metallic (Porsche 376)
    GT Racing Fiberglass 9” Front Fenders (030B)
    GT Racing Fiberglass 11” Rear Flares (035-T11)
    AIR  Fiberglass Hood (911-3011)
    AIR Fiberglass Rear Deck with IROC Wing (911-601L)
    GT Racing Fiberglass IROC Front Bumper (043A) With Custom Alu Splitter, Detachable
    GT Racing Fiberglass Rear Bumper (046)
    GT Racing 062A Lexan Side Windows (with Leather pull-straps)
    935 Racing Mirrors (GT Racing 049)
    Lexan Rear Quarter windows
    Lexan Rear Window (With Retaining Tabs and 964 Rubber Seal)
    Windshield Hold-Down Retaining Tabs (5)
    Welded-in Non-Sunroof 911 Roof
    Headlamp Protective Covers
    Headlamp Replacement Covers
    AMB 260X Transponder #2366547 (Mounted near Left-Front Axle)
    Removed Windshield Wiper & Washer System (Motor, Mechanism, Tank, Pump)
    Odyssey PJ680MT Battery with Shock Mount (Relocated to A/C Evaporator Compartment)
    Battery CutOff (Kill) Switch
    Front Emergency Tow Ring (Through Bumper)
    Rear Emergency Tow Ring (Through Bumper)
    Weight (Full Fuel Tank, Both Seats, Stock Muffler, no Driver);  1050 kg  (2315 lb)

    SUSPENSION & CHASSIS:
    930 Tie Rod Ends
    Bump-Steer Kit
    RSR Front Struts
    Front Coil-Over Suspension with 325lb x 2.25” Springs
    Rear Coil-Over Suspension with 475lb x 2.25” Springs
    1” #6  Front Charley Sway Bar
    1” #6  Rear Charley Sway Bar
    Bilstein Custom Valved Sport Shock Absorbers (by Mirage)
    Poly Suspension Bushings
    MonoBall Front Shock Tower Tops
    Stable Energies Camber Truss
    100mm Rear Wheel Studs
    72mm Front Wheel Studs
    Cross-Drilled 911SC Brake Rotors
    Pagid Racing Brake Pads:   Yellow RS29-4501 Front,  Black RS14- 4304 Rear
    Smart Racing Front Brake Duct Manifolds and Ducting
    Stainless Steel Brake Lines
    Rear Trailing Arm Mount Tow Eyes
    2 BBS RS-081 11x15” Forged Three-Piece Alloy Wheels
    2 BBS RS-080 9x15” Forged Three-Piece Alloy Wheels
    8 Gotti 55AC 9x15” Forged Three-Piece Alloy Wheels
    11 Fuchs 8x15” Forged Alloy Porsche Wheels

    ENGINE, TRANSMISSION, & DRIVETRAIN:
    95mm Bore, 70.4mm Stroke (2994cc)
    9.3:1 Compression Ratio (Stock for 1980)
    Ported & Polished Cylinder Heads (by Greg Brown)
    Web-Cam 20/21 Camshaft
    Aasco Valve Springs and Retainers
    K&N Air Filter
    Modified Air Box Housing (Increased Intake Holes)
    Air Box Relief (Pop-Off) Valve
    Tarett Engineering Solid Engine and Transmission Mounts
    MSD 6A Ignition System with MSD Blaster Coil
    European Racing 1 5/8” Headers
    Stock Bischoff Muffler (Street)
    MSDS GT-2 Stinger Open Exhaust (Track)
    Setrab COM500-15 24”x6” Oil Cooler (Front Bumper Center Mounted)
    Stock 915/61 Gearbox/Transaxle with Kaaz Limited Slip Differential

    CLASSIFICATIONS & RESULTS:
            POC  -  Class V2 / R4  (58-61 points), GT4 or GT5 (191 WHP)
       PCA Zone 8 -  Class HI or II   (39 points)
       PCA SDR Class CC9, CC10, or CC11  (645-749 points)
       PCA Club Race – GT4. Or GT5
       Lap Times:
         Buttonwillow Raceway Park #1 CW;  2:08.15
         California/AutoClub Speedway Infield;  1:14.92
         California/AutoClub Speedway ROval;  1:53.84
         Laguna Seca Road Course;  1:43.59
         Las Vegas ROval with Legends Loop;  1:52.122, POC V2 Record
         Streets of Willow Springs 1.8mi CW;   1:24.97, PCA HI & CC7 Record
         Thunderhill Raceway;   2:06.15
          Willow Springs Road Course;  1:34.27,  PCA II Record 1:35.50