1975 Porsche 911S Coupe 3.8L Backdate RSR Twin-Turbo
Vehicle Details
- Year: 1975
- Make: Porsche
- Model: 911S Modified
- VIN: 9115201063
- Mileage: 1,100
- Transmission: Manual
- Title Status: Clean
- Color: Blue
- Seller Type: Private Party
- Location: Oyster Bay, NY 11771
- Lot #: V-0028157
Built to customer specifications by Patrick Motorsports, this 1975 Porsche began life as a 911S Coupe and has been fitted with backdated RSR-style bodywork and equipped with a GT2-based 3.8L engine featuring twin-plug heads, twin turbochargers, and an output of 600 HP on very low boost. The car is finished in a one-off paint color and showcases a host of unique details as well as a custom interior with an integrated leather-wrapped roll bar and handwoven inserts. The project is said to have been completed over the course of several years at a cost of well over $500k. An uncompromising RSR-style backdate with exceptional attention to detail, this 911 was recently serviced and is now being offered for auction by its owner out of New York.
The car was stripped to bare metal by Patrick Motorsports and modified with a set of early RSR-style steel fender flares along with a backdated “long hood” nose section. The rain gutters are shaved from the roofline and 911R-style taillights have been installed along with aerodynamic 934/5 style mirrors, a ducktail rear spoiler, a center-fill hood, RSR-style Fuchs wheels, Cibie driving lights, and a fiberglass front valence with a special F1-inspired Jabroc wood spoiler. The paintwork was completed on a rotisserie and features a custom-designed shade of blue, detailed images are provided in the gallery.
The cabin is wrapped in smooth tan leather complemented by painted hardback sport seats featuring handwoven blue houndstooth inserts that extend to the dashboard, door panels, and rear shelf. A leather-wrapped four-spoke wheel is situated ahead of the driver and a set of early 356-style gauges are housed in a body-colored instrument panel. The integrated roll cage is wrapped in matching leather and provides additional structural rigidity. Other details include a 917-style wooden shift knob, wool carpets, matching tan seatbelts, power windows, and a restored ventilation control panel.
Power comes from a Porsche GT2 twin-plug engine bored to 3.8-liters and upgraded with Alpha P993 GT-28 TIAL high-flow twin turbochargers, a 996 GT3 crankshaft, Mahle RSR piston & cylinder set, 962-type throttle bodies, a solid rocker arm valve control conversion, and 993 GT2 EVO mechanical rocker camshaft set. The engine build is said to have cost nearly $60k in itself. Power is sent to the rear wheels through a type G50/021 6-speed manual gearbox with a shortened bell housing, billet side cover, and a limited-slip differential. The car rides on 935-style suspension with adjustable Bilstein coilovers and monoball front strut mounts. Stopping power is derived from large 917-style brakes with dual master cylinders. Other equipment includes a hydraulic pedal assembly, a racing-style fuel cell, and a front strut brace. The seller has a binder with full documentation of the build by Patrick Motorsports and has recently completed an extensive maintenance service.
This sale will include a clean title.
Auction Results
- Sold for: $310,000
- Auction End: Mar 29, 2023 08:08:13PM UTC
- Number of Bids: 42
Comments (69)
Sold for $310,000
Bid in the amount of $310,000
Bid in the amount of $301,000
Bid in the amount of $300,250
Bid in the amount of $300,000
Bid in the amount of $299,000
Bid in the amount of $298,000
Bid in the amount of $296,000
Bid in the amount of $295,000
Bid in the amount of $294,000
Bid in the amount of $288,000
Bid in the amount of $286,500
Bid in the amount of $284,000
Bid in the amount of $282,000
Bid in the amount of $280,000
Bid in the amount of $279,000
Bid in the amount of $276,000
Bid in the amount of $272,000
Bid in the amount of $267,500
Bid in the amount of $265,000
Bid in the amount of $255,000
Bid in the amount of $250,000
@garrege Yes, some oil dripped on the exhaust. The car was recently serviced and there are no leaks.
Seems to be or was an oil leak on the right side, caked on the muffler. Yes/no?
Bid in the amount of $240,000
Bid in the amount of $232,000
I mean this as a compliment. This thing is absolutely bats#!t crazy. WOW!
Bid in the amount of $228,000
Bid in the amount of $220,000
Bid in the amount of $216,000
Bid in the amount of $211,000
Bid in the amount of $210,000
what a lucky new owner for this one! my bare bone 964 Carrera Cup weighs around 2700 lbs with only 270 hp and its a hoot to drive i can't imagine the feeling driving this one 2400 lbs with 557 whp!
Bid in the amount of $200,000
Bid in the amount of $190,000
Bid in the amount of $180,000
Bid in the amount of $175,000
Additional content has been added to the gallery for this listing.
@DJATL I took some additional undercarriage pictures today. They will be posted shortly.
Bid in the amount of $165,000
2410 lbs+558 whp=NIRVANA, i'll be watching till the end
Thanks, any recent pictures of the undercarriage? Pictures in the listing seem to be from the build.
Bid in the amount of $155,000
@DJATL The car was custom built by Patrick Motorsports for a customer / collector, so I haven't seen any articles. Patrick Motorsports does have a few items (although limited) on their website. I will look though. Also, it does not have AC.
Absolutely stunning! Any articles/reviews of this car? Tough to find much info online.
I may have missed it but does it have A/C?
I watched it being built. Really spectacular car.
Bid in the amount of $150,000
Bid in the amount of $135,000
@993RSR Thank you so much for the info. Very helpful!
@993RSR Source, helped work on the car. If I remember correctly, that was with around 1/3 to 1/2 a tank.
Bid in the amount of $130,000
Bid in the amount of $125,000
@PorscheBran it weighs 2410
LF 471 RF 422
LR 743 RR 774
@burnrubr This car is being sold as a private sale.
@burnrubr Unfortunately, I do not have an answer to your question about weight at this time.
you're only 2.5 hours from me are you a dealer sir?
any idea of the approximate current wet weight?
Bid in the amount of $120,000
Bid in the amount of $110,000
Speechless....
What a beautiful build. Very thoughtful.
what a car! I love everything but the interior
it would be marvelous if you opened the door and saw a scratched up full cage and a couple of tattered race seats!
@burnrubr It's approximately 600 HP to the crank. According to Patrick Motorsports, to the wheels, it's 558 horsepower @5,700 RPM with 1 bar of boost on pump gas.
the name of the builder alone is worth the admission! the mentioned 600 hp is to the wheels? pump or race gas? thanks
Wow, almost looks too fast for the road, in a good way.
Bid in the amount of $100,000
Bid in the amount of $15,000
Wow!