1973 911 RSR 3.8L Backdate Upgrade Conversion

Posted by PATRICK MOTORSPORTS on


This 1974 to 1973 backdate 911 got a complete tear down, rebuild and upgrade package with a 3.8L engine, RSR bodywork, coilover suspension, and custom interior.

Here is how it arrived at our facility as a roller with no engine or transmission:

RSR

 

heinz susp

No expense was spared with the suspension & brakes either. The car uses 993 Turbo 'Big Red' brakes with a fully adjustable RSR coilover suspension.

Some of the parts include: 

- Rear Spring Plate Set - 935 RSR - (1965-1989) PORSCHE 911 / 930 Turbo (911 331 935 R 01)

- RSR Lightweight Front Control Arm & Cross Member Suspension Set (911 341 935 FR)

- Front Strut Supporting Mount Set - RSR Solid with Spherical Mono-Ball Bearing Cartridges - Adjustable Mounting Positions with -1 Deg. Camber Offset (911 343 002 KT)

- Rear Swaybar & Drop Link Set - RSR Style (SUS 911 RSRRSBA22L)

- Coilover Spring Hardware Set (999 343 004 K1)

- 993 Turbo Big Red brake calipers (BRA 993 351 425 10 , BRA 993 351 426 10)

- 993 Turbo Rotors (BRA 993 351 045 10 , BRA 993 351 046 10 - LINK)

- Stainless Steel RSR Muffler (EXH 911 RSR SM SS PMS - LINK)

heinz lift work 3

Big power means big cooling. We've developed oil cooling systems with Setrab for high performance applications such as this one.

- 911 RS / 930 RSR Style Front Center Mount Oil Cooler Set (911 207 FMOC RSR)

911 RSR 3.8L engine bottom view

Engine build highlights include:

- 3.6L 993 engine pushed to 3.8L using 11.5:1 compression Mahle pistons & cylinders. (ENG PS102-022)

- Pauter 993 Turbo connecting rods (ENG 993 230 580 1270F)

- 993 solid rocker arm valve control conversion (ENG 993 105 043 99)

- 993 Web Cam super sport camshaft set (ENG 05-392)

- 993 8mm titanium valve retainers w/ racing valve springs (ENG 901 105 901 50 HP AAS)

- 911 1 3/4" Exhaust Manifold Heat Exchanger Set (EXH FPOR-0406)

- RSR Wide Sport Exhaust Muffler (EXHESM RSR SIL)

heinz fuel cell

Up front uses our exclusive center fill fuel cell.

- Fuel Tank Cell - PORSCHE 911 / 930 - Center Fill System | 17 Gallon (65 Liter) Pro Cell / Fuel Safe (FUE SA100CFK)

As with all of our builds, we use Odyssey batteries and one of our mounts.

- Battery - ODYSSEY PC-925A (BAT ODY PC 925 A)

- Battery Carrier Mount "UNIVERSAL" - Designed For ODYSSEY PC 925 Batteries (PMPPC925MNT)

3.8L done

The car uses all Patrick Motorsports 3.6L DME conversion components, including:

- Dual Ignition Coil Mount Adapter (993 602 CAM PMP)

- 993 3.6L DME Engine Chassis Conversion Harness (993 612 173 DME PMS)

- 993 Single Belt Engine Crankshaft Pulley & Fan Drive Set (993 102 050 SBCF PMS)

- 911 / 930 Accelerator Throttle Cable Conversion Kit to 3.6L DME Engine (911 964 993 TC PMS)

911 RSR 3.8L interior passenger side

The 915 transmission is smooth and strong using Patrick Motorsports upgrades, including:

- 225mm Flywheel - 3.6L DME (964 / 993) Engine Conversion to 915 / 901w/ adapter. (FLW 225 36DME FW PMS)

- Stage 1 Lightweight aluminum clutch set (915 116 KEP 01 PMS)

- Starter Ring Gear - 225mm / 915 Transmission (CLU 911 116 239 04)

- Limited slip differential

heinz seats

Houndstooth and leather, handcrafted here in house.

heinz carpeting

With the tub now perfect, new carpeting is cut, sewn, and installed. Rollbar provides safety & rigidity without being obtrusive.

911 RSR 3.8L interior drivers side

Take a look at the stitching work of our Master Interior tech!

heinz ecu

Motronic ECU, mounted under the driver's seat using our:

- 911 CHASSIS DME / ECU MOUNT for 964 & 993 CONVERSIONS, this mounting panel allows you to fit the ECU, DME FUEL RELAY, OBD II PLUG, and PROPER GROUND. Includes mounting hardware. (ELE 911 964 993 ECUMNT PMS)

heinz side

The body is now noticeably wider using RSR style bumpers and flares.

- 1973 911 RSR Front Bumper Cover - Includes Oil Cooler Duct & Block Off Cover (BOD911RSRFB)

- 1973 911 RSR REAR BUMPER COVER w/ wide exhaust outlets (BOD911RSRRB)

- 1973 911 RSR LOWER FRONT SPLITTER / chin spoiler. (BOD911RSRFS)

- Dansk 9" front flares, 11" rear flares

(BOD 930 503 308 00 DAN , BOD 930 503 307 00 DAN , BOD 930 503 608 00 GRV , BOD 930 503 607 00 GRV)

heinz front splitter

A closer look at the RSR front splitter.

- 1973 911 RSR LOWER FRONT SPLITTER / chin spoiler. (BOD911RSRFS)

The RSR front bumper cover also allows air into the oil cooler.
- 1973 911 RSR Front Bumper Cover - Includes Oil Cooler Duct & Block Off Cover (BOD911RSRFB)

heinz rear qrtr

Finished and ready to ship to the customer! Final weigh in was a super light 2280 lbs. (1034kg)


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