We are pleased to offer 1973 Porsche 911 RSR tribute s/n 101898, the third of three Porsche RSR “Art Cars” built by Jon Gunderson, well known for his ground-up Ferrari 246 GT and 246 GTS rotisserie restorations. Indeed, Jon assembled a specialized team of craftsmen, engine builders, interior specialists and mechanics to help him build his many dream cars, including the three Porsche RSR “Art Cars”.
RSR tribute s/n 101898 is finished in a stunning dark blue Livery with a burnt-orange leather and Alcantara interior. An obsession with detail has been carried throughout every step of the build process and so the end result is truly spectacular. Features include hand-formed steel front and rear bumpers, a hand-crafted aluminum hood with a center-fill 100-liter fuel tank with a machined metal fill cap, a beautifully fabricated aluminum ducktail rear spoiler with a 3.8 engine script, custom dual exhaust outlets, 15″ Braid wheels, 930 brakes, Elephant Racing suspension components, fully adjustable RS-style Recaro bucket seats finished in a burnt-orange leather with a matching leather-covered roll bar accented with contrasting dark-blue stitching. Power is provided by a freshly-built and fuel-injected 3.8L flat-six mated built and dyno tested to a very strong 342hp at 7,448rpm and 245 ft lbs of torque at an impressive 7,043rpm. That power is put to the ground through a Type 915 five-speed manual transaxle and a limited-slip differential. The build began in 2018 and there are only 293 miles since the build was completed in very late 2020.
During the build process the body of the donor 911 was treated to a full rotisserie restoration starting with a strip to bare metal, a full primer rust-proofing and was then fitted with hand-crafting steel front and rear bumpers as well as adding hand-formed steel fender flares and a custom fabricated all-aluminum deck lid and ducktail rear spoiler. RSR style reinforcements were added to the front/rear shock towers as well as the torsion tubes. Styling cues include a custom billet aluminum fuel cap, a matching passenger-side oil fill cap, T-handle hood and rear lid latches and PORSCHE script on the rear lid. Final exterior touches include all new H4 headlights, turn signals and lenses as well as drilled door handles and RSR style rubber lid hold downs. A custom lightweight wiring harness was installed to further reduce weight. For an overview of the build process of all three Porsche RSR “Art Cars” built by Jon Gunderson click on https://www.rsrrebel.com/
The original 1973 RSR engine was a 2.8 liter producing roughly 280 horsepower. No expense was spared during the engine build and Mirage International in San Diego was tasked with the job. The Mirage built 3.8L flat-six engine features electronic fuel injection, modified high butterfly throttle bodies, and a Motec engine management system hidden within the case of a Bosch MFI pump with twin CDI unit housings. Once built the engine was dyno tuned on 27 Oct., of last year by Sakata Motorsports. The result is a beautiful, powerful and factory looking engine with a Dyno confirmed 342hp at 7448rpm and 245 ft lbs of torque at an impressive 7,043rpm.. Power is put to the rear wheels via a Type 915 five-speed manual transaxle and an Giken limited-slip differential. A large front oil cooler and a supplemental under-fender oil cooler for added capacity cools the engine through Elephant Racing oil lines with an exterior oil fill.
The lightweight 15″ x 9″ Braid front wheels are mounted with new Pirelli 225/50/VR 15 tires and the 15″ x 11″ Braid rear wheels are mounted with Pirelli 285/40/VR 15 tires. The chassis is fitted with Elephant Racing suspension components including Polybronze bushings, sway bars, shock mounts, and a matched set of torsion bars and Von shocks. Porsche 930 trailing arms have also been added. Porsche 930 finned brake calipers and cross-drilled and vented 930 rotors at all four corners haul it down from high speed. RSR tribute s/n 101898 was corner-balanced by Rothsport Racing after the engine was installed.
The interior is by Autos International, the premier shop for Porsche interiors in Southern California and is finished in a combination of Alcantara and genuine leather. The dash topper, knee pad, door, quarter panel garnish rails and steering wheel are finished in black leather with perfect stitching. The Recaro seats and door panels are wrapped in a burnt-orange cross-weave Alcantara with accenting metal grommets. The custom roll bar is wrapped in matching burnt-orange leather with contrasting dark blue stitching. The headliner is black Alcantara. Door panels are RSR style with black leather door pulls. Both the trunk and engine compartment are beautifully detailed and fitted with quilted burnt-orange accent pads. The gauges were rebuilt by Joe’s Speedometer in Reseda. A beautiful single white faced tachometer is flanked by a black faced speedometer, oil and fuel gauges plus a Heurer clock. The pedal assembly features a dual master cylinder unit with adjustable balance bar from the 901 Shop in Florida, retailing for $4000. A Wevo short shifter was installed, complementing the rebuilt 915 transmission with crisp short shifts. Aluminum pedal boards by RennLine were also installed. The side window glass is thinner and all new glass was installed throughout. And finally, as a homage to the original, an RSR style leather wrapped steering wheel rounds out a beautifully appointed interior. Built as a passion project, no expense was spared and no budget was set, so the attention to detail is easily on par with the bespoke quality of a Singer.
Over the last five decades we’ve inspected, driven and sold thousand exotics. Few match the build quality of 1973 Porsche 911 RSR tribute s/n 101898, which is beautifully built, fully sorted and ready to be driven to your next cars and coffee meet, thanks to fresh mechanicals, strikingly attractive cosmetics and excellent performance. We urge you to go check out the Youtube videos produced for this car to get a better sense of the driving experience and incredible sounds it makes. Hundreds of photos were taken throughout the build process which will be included with purchase as well as written documentation and invoices of the work done. Built at a cost of over $500,000, Porsche 911 RSR tribute s/n 101898 is offered for far below the cost of the build and priced to sell at $319,500.