1980 Porsche 911 RSR Style Backdate

Description

Long seen as the perfect starting point for motorsport-inspired builds, the 3.0-liter 911 SC coupe (1978-1983) retains the classic 911 shape without any of the early 911 drawbacks. Subtle, important upgrades were incorporated into the 911 SC including unibody galvanization, chassis reinforcements, and aluminum suspension components. In fact, this RSR backdate built from a 1980 911 SC by KMW Motorsports of Boca Raton, Florida proves this point with aplomb. All manner of the best aftermarket Porsche parts have been chosen for this build including MOMO, OMP, GTS Classics, Brembo, fifteen52, Clewett, MSD, and Guard. These parts are artfully combined with the beautiful RSR silhouette, crafted in fiberglass, and finished in period-correct Birch Green (lichtgrün). Additionally, this lightweight – only 2300 lb once corner balanced – features mechanical rebuilds to both transmission and engine with the 3.0-liter receiving JE pistons, Pauter rods, and twin-plug ignition breathing through PMO carbs and a Dansk dual-outlet exhaust system.

Exterior Highlights

• Backdated US-spec 1980 911 SC by KMW Motorsports to 1973 RSR longhood bodywork

• Finished in Birch Green (lichtgrün), one of just 15 individual colors from the 1974 IROC color palette

• Black Carrera side stripes

• Fiberglass front and rear fenders

• RSR style lightweight front and rear bump

• Fiberglass front hood with external center fuel filler

• Lightweight front hood prop

• Lightweight hood crest

• Ducktail rear engine lid

• Early-style engine grill

• H4 headlights

• Lightweight hood crest

• Urban Outlaw fifteen52 wheels, Hoosier R7 tires

• Open lug nuts

Interior Highlights

• MOMO Prototipo steering wheel and hub

• Suede GTS Classics Lollipop seats with Pascha inserts

• Four-point FIA OMP race belts

• Roll bar

• Recalibrated tachometer (7800 rpm redline)

• 964 RS style door panels

• Rebuilt pedal cluster, drilled aluminum pedals

• Rebuilt shifter linkage, new bushings

• Drilled aluminum pedals

• New carpets

Mechanical Highlights

• Rebuilt 915/63 ‘12’ LSD transmission: synchro rings, dog teeth

• Short ratio gear set: 3, 4, 5

• GT limited slip differential

• RSR-style front coil-over struts with raised spindles 

• RSR-style rear coil-over shocks

• All new polybronze bushings, mono balls, ball joints, and wheel bearings

• Align, corner balance, set up with weight noted at 2300 lb

• Front (22 mm) and rear (18 mm) sway bars with adjustable drop links

• Turbo tie rods

• Front cross strut tower bar

• Red painted front and rear Brembo brake calipers, Hawk pads

• Vented, cross-drilled brake rotors

• Front passenger fender mounted oil cooler with electric cooling fan

• Replacement fuel tank with external center fill neck

• Lightweight front hood prop

Engine Highlights

• Kevin Wheeler built 3.0-liter twin-plug engine

• JE pistons / Nikasil cylinder set

• Pauter connecting rods

• Xtreme cylinder heads

• Custom grind cams

• GT3 oil pump

• 50mm PMO carburetors

• MSD Ignition 'Digital 6AL', Blaster coils, and Clewett plug wires

• Turbo lower valve covers

• Stainless steel headers, no heat

• Large dual exhaust Dansk RSR-type muffler

Known Flaws

•  The front hood needs fit adjustment

Ownership History

Built for the consignor throughout 2018 this RSR-inspired build features a near $100,000 build sheet (on file) when completed and today is a well-sorted, eye-catching 911 from Porsche’s finest analog era.

Additional Notes

A Broad Arrow Group Car Specialist is working as an agent on behalf of the owner for this vehicle.

Contact: Marvin Waters Phone: 910.315.2918 email: marvin.waters@broadarrowgroup.com