1973 Porsche 911 Carrera RS 2.7

1973 Porsche 911 Carrera RS 2.7

Engine: 2,687 cc, air-cooled horizontally flat six
Manufacturing dates: November 1972 – July 1973
Transmission:
5-speed guide
Energy:
210.Zero bhp @ 6,300 rpm
Torque:
188.Zero ft lbs @ 5,100 rpm
Weight:
975 kg (2149 lbs)
Zero-60 mph:
 5.6 sec (est)
High Velocity:
150 mph (est)

Introduction

The Carrera RS debuted in October 1972 on the Paris Motor Present, and was the highest first technology 911 and among the finest highway vehicles of all time. It was the quickest manufacturing 911 and a strong race winner. Some really feel it’s nonetheless the most effective 911 ever constructed (hyperlink to our put up) and positively a high 10 finest Porsche ever made. 

The early 1970s marked the fruits of Porsche’s dominance within the prototype period and the beginning of a GT racing program primarily based on the ever-successful 911. A decade after the 911’s debut, the general public was offered a homologation particular that foreshadowed a legendary line of racing Porsches – the Carrera 2.7 RS. Fitted with flared wheel arches, a particular ducktail spoiler, and a extremely tuned flat-six engine, the good Carrera 2.7 RS is the mannequin in opposition to which all subsequent high-performance 911s are judged. The two.7 RS highway automobile was the mechanism for homologating the elements wanted for racing. 

The 210 bhp 2.7 liter engine, benefitting from the expertise gained with the 917 racing program, elevated the 911 into the 2500-3000 cc class (RSR racing variations had been initially 2.eight liters, and later three.Zero liters) and the potential of mixing it with heavyweight opposition similar to Ferrari Daytonas and DeTomaso Panteras. The ducktail rear spoiler is the primary correct wing on a 911; the widened wheel arches allowed extra rubber to return involved with the highway, and Porsche put the automobile on a eating regimen (light-weight panels, stripped inside), decreasing the burden to as little as 975 kg. There have been a number of variants and choices obtainable to patrons. 

Associated: Carrera RS 2.7 Light-weight, Carrera RS 2.7 Touring, Carrera RSR 2.eight

A Highway / Race Automotive

The Carrera RS 2.7 was conceived as a 911-derived race automobile and was the primary manufacturing road/race 911 extensively provided to the general public. The corporate’s philosophy was that Porsche’s (apart from pure competitors fashions) needs to be used for each day transportation.

Porsche constructed the RS on high of the 911S 2.four, the quickest commonplace Porsche 911 you could possibly purchase on the time. The RS received a bigger, extra highly effective 911S-based flat-six engine and was extensively lightened. The RS seemed almost the identical because the 911S, however had a “chin spoiler” beneath the entrance bumper and rear fender bulges in addition to the now well-known “ducktail” spoiler. There additionally was “Carrera” script throughout every door in a contrasting coloration that matched the automobile’s Fuchs wheels.

The two.7 RS delivers efficiency that’s spectacular even by fashionable requirements, so it’s no shock that it impressed vehicles just like the GT2 RS and GT3 RS. The two.7 RS is arguably the Porsche that set in movement the 911’s development from nice highway automobile to one of many best monitor machines of all-time. The overall bundle was a enjoyable and street-able 911 with actual racing chops that set the template for the way Porsche builds race-road particular fashions that also holds right now.  

1973 911 Carrera RS 2.7

The two.7 RS initially couldn’t legally be utilized in the united statesfor something however racing. It had no emissions gear as a result of it was made strictly as a European road-race automobile. Fortuitously, the EPA finally relaxed emissions requirements sufficient for older vehicles to let Porsche 2.7 RS house owners legally drive it on U.S roads.

The Carrera title hadn’t been used on road-race Porsches for a decade and it was new to the 1970s youthful technology of Porsche followers. The title was revered as a result of a Porsche had efficiently competed within the well-known Carrera Panamericana highway race in Mexico in 1953 and 1954. The letters “RS” stood for “Rennsport” (racing sport) and designated a contest Porsche. The “2.7” stood for the two.7 liter displacement of the RS engine.

Thank The Porsche 917

The only objective of the two.7 RS was to homologate the 911 for competitors in order that Porsche may take the combat to the Group four’s high canine of the period with its 2.eight RSR race automobile. With its highly effective but gentle mechanically injected flat six and lighter weight, the RSRs grew to become legends nearly in a single day. To know how we received thus far, we have to return to the sheer dominance of the 917 in prototype endurance racing.  

The Porsche’s 917 was principally outlawed from worldwide competitors after dominating endurance automobile racing from 1969 to 1971. It set so many new pace and lap time information that the FIA modified the homologation guidelines to restrict displacement to three.Zero liters for Group 5 in 1972, citing security causes for the choice. The FIA knew totally properly it was intentionally banning the Porsche 917 from sports activities prototype racing for the 1972 season, nevertheless it didn’t see how that call would drive Porsche to double down on the GT racing scene. Porsche moved away from the 917 (apart from Can-Am racing in North America) and onto a program dedicated to growing its 911 highway automobile right into a severe monitor competitor.

The goal was Group four (Particular Gran Turismo) in European GT racing. Porsche already had a presence within the manufacturing GT class, within the type of many privately entered 911s. The two.4S, which in 1972 was the sportiest model of the 911, was starting to endure by the hands of the larger Ferrari Daytonas and De Tomaso Panteras. Porsche wanted to construct 500 an identical 911 specials to homologate a brand new automobile into the Group four class, a category that allowed a much bigger engine and larger flexibility in a weight discount and wheel measurement. And so, beneath and racing chief Norbert Singer, Porsche checked out methods to show the 911 right into a racing automobile. 

It seems that a displacement of just below three.Zero liters turned out to be excellent for powering the comparatively small Porsche 911.

The Engine

The 911’s engine was designed as a 2.Zero liter. Porsche had already elevated the scale of the engine for the two.4S however a capability of two.four liters was seen because the restrict. Creating the engine past 2500cc was way more difficult for Porsche however was essential if the 911 was to be entered into the three.Zero liter. 

Whereas the two.7 RS engine was carefully associated to that within the 2.4S, the upgrades had been substantial. As a substitute of utilizing a (comparatively) thick forged iron liner, the 917’s V12 had used a nickel carbide, referred to as Nikasil (which was additionally low-friction) and Porsche used the identical strategy right here. The issue was that the cylinder partitions dangerously skinny, so Porsche used an electrolytic deposit system that put the Nikasil materials immediately onto the aluminum cylinder bores in a layer just some hundredths of a millimeter thick. This allowed a bore enhance to 90mm, growing the capability to 2687cc, whereas retaining a thick aluminum cylinder wall for energy.

The bigger bores led to the elevated capability wanted and a a lot beefier, flatter torque curve. General, the two.7 RS’s air-cooled flat six engine boosted energy from 193 hp to 210 hp at 6500 rpm. Torque was raised from 159 lb/ft to 188 lb/ft at 5200 rpm. 

Weight Loss & Race Prep

Decreasing weight to benefit from the two.7 liter engine’s further grunt was a precedence for Porsche. Porsche had developed a restricted version light-weight automobile earlier than, the uncommon 1967 911 R. With perspex home windows and fiberglass panels, it weighed simply over 1,763 lbs, and solely 20 had been ever produced. This time issues had been totally different as a result of Porsche needed to construct and promote 500 vehicles to fulfill homologation guidelines. Porsche needed to promote its new light-weight and stripped out automobile within the showroom and the thought of plastic home windows and doorways made the advertising and marketing division freak out. 

The 911S was the bottom for the two.7 RS. Porsche stripped the inside and used particular skinny glass, light-gauge panels on unstressed physique panels and fiberglass bumpers. The bonnet, roof and wings had been  fashioned from thinner gauge metal that was Zero.08 mm thinner than manufacturing commonplace.

Not all adjustments had been about dropping pounds. The RS physique would even be modified to accommodate wider wheels flaring the rear three quarters 50mm. The racing division needed to make use of 11 inch wheels on the monitor and the racing guidelines dictated that arches may barely flared arches. To tame the 911’s high-speed aerodynamic deficiencies, the staff created the ducktail rear spoiler. The signature RS duck-tail engine cowl was constituted of fiberglass.

There was no weight-adding sound insulation or rear seat, and rubber mats changed heavier carpeting. Skinny entrance bucket seats had nearly no padding. Door panels had been flat and plain, with a pull wire as an alternative of an inside door deal with. There was no clock or perhaps a passenger’s solar visor. There additionally was no undercoating, doorsill trim, glove compartment lid, coat hooks or springs to counterbalance the entrance trunk cowl.

Specs & Efficiency

The automobile was amazingly responsive, with its quick-revving engine, highly effective brakes and lightweight, nearly telepathic, steering. The race-tuned suspension and wider tires gave a tough journey at low speeds, nevertheless it smoothed out at excessive speeds. The automobile carried out so properly largely as a result of it was extraordinarily gentle at 1,985 kilos and it was coupled to that torquey and extra highly effective engine. The RS was quick, even by right now’s requirements. It did Zero-60 mph in 5.6 seconds and hit 100 mph in simply 12.eight seconds. High pace was round 150 mph.

That peak torque arrives at a excessive 5100rpm, nevertheless it’s at 4500rpm that the engine’s be aware takes on the well-known wail and the thrust actually begins to construct. It revs and revs, it and also you having fun with each second, every adjustment exactly controllable because the gearbox enables you to carry out super-fast shifts between the higher ratios in a means you won’t have fairly anticipated. The entire thing — thrust, pointability, adhesion, soundtrack – is completely enthralling, made all the higher by the Pirellis, which filter out highway harshness and make the RS as soon as once more into the civilized tourer that’s the different a part of its character.

mannequin
1973 Porsche 911 Carrera RS 2.7
sort
Collection Manufacturing Automotive
constructed at
Stuttgart, Germany
manufacturing
200
engine
Air-Cooled Flat 6 w/Dry Sump Lubrication
place
Rear, Longitudinal
aspiration
Pure
valvetrain
SOHC
gas feed
Bosch Mechanical Gasoline Injection.
displacement
2687 cc / 164.Zero in³
bore
90 mm / three.54 in
stroke
70.four mm / 2.77 in
compression
eight.5:1
energy
156.6 kw / 210.Zero bhp @ 6300 rpm
particular output
78.15 bhp per litre
bhp/weight
233.33 bhp per tonne
torque
254.89 nm / 188 ft lbs @ 5100 rpm
physique / body
Unit Metal, Fiberglass Decklid
entrance tires
185/70VR-15
rear tires
215/70VR-15
entrance brakes
Radially Vented & Axially Drilled Discs
rear brakes
Radially Vented & Axially Drilled Discs
entrance wheels
F 38.1 x 15.2 cm / 15.Zero x 6 in
rear wheels
R 38.1 x 17.eight cm / 15.Zero x 7 in
steering
Rack & Pinion
f suspension
Transverse Management Arms w/Torsion Bars, Anti-Roll Bar, Bilstein Shock Absorbers
r suspension
Trailing Arms w/Torsion Bars, Anti-Roll Bar, Bilstein Shock Absorbers
curb weight
900 kg / 1985 lbs
wheelbase
2271 mm / 89.four in
entrance monitor
1443 mm / 56.eight in
rear monitor
1473 mm / 58.Zero in
size
4147 mm / 163.three in
width
1778 mm / 70.Zero in
peak
1321 mm / 52.Zero in
transmission
5-Velocity Handbook
gear ratios
three.18:1, 1.83:1, 1.26:1, Zero.925:1, Zero.724:1
closing drive
four.43:1
gas capability
85 liters or 22.44 gal.
Zero – 60 mph
5.6 seconds
Zero – 100 mph
12.eight seconds
high pace
~150 mph

Manufacturing & Pricing

Porsche wanted to construct 500 2.7 RS vehicles to qualify it for the Group four Particular GT race class. 

Because the advertising and marketing and gross sales departments ready for the two.7 RS to be proven on the Paris Auto Present in October 1972, it’s no secret that a lot of them thought that the automobile could be a failure. The advertising and marketing and gross sales groups had been very involved in regards to the prospect of promoting 500 totally stripped-out highway vehicles, particularly contemplating it couldn’t be offered as a highway automobile in the US which was Porsche’s largest market. 

Calling it the two.7 S didn’t precisely trumpet the brand new arrival, so a brand new title was created — the ‘RennSport’ or ‘motor sport’. And, making use of a sort of belt-and-braces strategy to badging, in addition they introduced again a historic Carrera 356 title, to be utilized to a 911 for the primary time. And so the automobile grew to become the Carrera 2.7 RS.

The worth for the essential stripped RS was the equal of $11,785 in Germany, just a few thousand dollars greater than a 2.four liter 911S. To make its gross sales division much less anxious, Porsche provided the RS with an $893 “Touring Package deal” that gave the two.7 RS the upholstered and trimmed inside discovered within the 911S together with heavier metal rear bumpers and guards. The RS with the bundle was Porsche vendor possibility as a result of 500 RS fashions needed to depart the manufacturing line in stripped kind. Many RS patrons in Europe ordered the bundle as a result of they needed the quickest Porsche highway automobile, however not in stripped kind.

Porsche salesmen labored exhausting in September, 1972, to get RS orders from Porsche sellers and distributors, who additionally had been cautious of the automobile. Furthermore, Porsche administration members needed to take an RS.

The RS had gross sales begin with 51 orders taken the 1972 Paris Auto Present itself. Buzz started to construct and all the run of 500 vehicles was offered out per week after it closed. With orders holding up, Porsche made a second collection of RS fashions over the winter and elevated the worth by $308. 

The 1,000th RS was completed on April 9, 1973. Crossing 1,000 models allowed Porsche reclassify the automobile for the Group three Grand Touring race class. Porsche then pushed the envelope and constructed 55 even sooner, more-special “RSR” fashions particularly for racing. They value an extra $eight,940. 

A complete of 1580 2.7 RS vehicles had been constructed. The primary 17 examples off the road had been badged RS H (for Homologation); 200 Light-weight Sports activities (M471) had been made; 1308 of 115kg heavier Touring (M491) had been produced; 55 RSR racing vehicles too.

4 Variants

Most individuals assume there have been two variations of the RS, the RS Light-weight and RS Touring. The truth is, there have been 4 totally different variations. There was the homologation RSH mannequin that began all of it. Then there have been three vendor conversions on supply too. The M471 bundle catered to those that had a tolerance for minimal consolation. Two-hundred prospects purchased this RS Light-weight bundle (also called the ‘Sport’ model) which right now is usually referred to as the RS Gentle. 1,308 prospects selected the M472 bundle, which geared up the RS extra like a 911S – including some creature comforts – which was generally known as the RS Touring fashions. 55 prospects opted so as to add the M491 bundle, which added a bigger flat six and different race spec choices. 

RSH – Homologation – 17 models
RS Light-weight – M471 – 200 models
RS Touring – M472 – 1308 models
RSR – M491 – 55 models

RSH (‘Homologation’)

The start line was the automobile Porsche constructed to qualify for racing — 500 an identical vehicles, which had been checked off the manufacturing line and weighed to fulfill the game’s governing physique. Nevertheless, as soon as they’d been accounted for, they might then be modified and offered on by means of the vendor community. Good job, as nobody would wish to drive a regular RSH, which was stripped to the purpose of fooling around – slim tires, no trim across the rear home windows, no clock, hardly any underseal, not even a badge on the bonnet. This exceptionally uncommon H variations had black Carrera decals.

2.7 RS Light-weight (M471)

The RS ‘Sport’ or ‘Light-weight’ (conversion M471) took an RSH and added greater wheels, carpet within the baggage compartment and a greater passenger seat.

The carpet is skinny felt overlaid with rubber mats, the glass is thinner too, and also you hear each granule of grit flicking into the arches or tinkling alongside the floorpan. There’s no radio. One solar visor. No armrests. A clean circle of plastic sits in” place of a clock. To open the door, tug on a skinny size of leather-based; to shut it, pull on a easy plastic deal with. The low-back Recaro bucket seats are thinly padded light-weight gadgets too. 

For the first collection of Lightweights, the Porsche crest was a weight-saving sticker as an alternative of a steel badge. On the rear decklid, easy rubber hooks took the place of a steel catch and cable. 

What all Lightweights lack, in comparison with Touring RSs, are gadgets like entrance bumper trim and ornamental chrome strips that run the size of the sill beneath the Carrera script. 

While you drive a 2.7 RS Light-weight, it’s apparent that the automobile was constructed to be a race automobile. It responds to steering inputs instantly and appears to anticipate what you need it to do. 

Study extra in regards to the RS Light-weight (Sport)

2.7 RS Touring (M472)

The Light-weight was nonetheless too uncooked for a lot of, and with the advertising and marketing division scared they might not promote such an especially sparse automobile, Porsche additionally determined to supply the RS Touring (conversion M472). The Touring provided 2.four S-style consolation in the identical light-weight physique, with regular door furnishings, carpets, dials, switches and again seats. It’s a extra pleasant highway automobile

The Touring mannequin is 100kg (220 lbs) heavier than a Light-weight on account of this added gear. It’s all further weight contributed by the game seats, sunroof, and energy home windows. However it’s the RS most patrons opted for due that snug inside and elective 7 and 8X15 inch Fuchs wheels.

By way of driving, the Touring is analogous, however only a bit extra civilized and refined. The RS Touring journey is barely softer and thus extra snug. Creature comforts similar to extra snug seats, energy home windows, correct door handles, a sunroof, and a passenger-side solar visor all add as much as it being extra livable each day. The extra undercoating additionally makes the Touring simpler on the ears as properly.

Study extra in regards to the RS Touring

2.eight RSR (M491)

Aimed squarely on the FIA’s Group four class for Particular Grand Touring Automobiles, Porsche constructed this all-out racing mannequin primarily based on the Carrera 2.7 RS, incorporating each conceivable enchancment allowed by the rule e-book. The end result was the two.eight RSR, a thoroughbred 911 developed strictly for competitors use. It was meaningfully dearer than each the Light-weight and Touring packaged vehicles. 

It was quickly evident that the RSR was simply value the additional cash for privateers seeking to race. In its first season, the RSR gained the Targa Florio, the 24 Hours of Daytona and the 12 Hours of Sebring, incomes it the World Producers and IMSA Divers championships. It went on to win lots of extra races. 

Study extra in regards to the 2.eight RSR

Carrera 2.7 MFI

In 1974 Porsche provided a excessive efficiency gas injected Carrera particularly for the European market. These had been near 2.7 RS specification and are also known as the two.7 or Euro Carrera.

Study extra in regards to the 2.7 MFI

Driving Impressions

The RS is the last word 911 and is particular due to the best way it drives. Certain it’s uncommon and costly, however it’s the driving expertise that elevates the two.7 RS to icon standing. The sound, the acceleration, the free-revving engine, the texture by means of the steering and chassis, the cornering poise, the wieldy dimensions, the look and odor of the factor. It’s participating, enjoyable and it simply sucks you in. Certain, 210 bhp and 188 lb/ft of torque doesn’t sound like a lot right now however keep in mind the RS Sport weighs solely 900kg in order that energy is greater than sufficient.

It’s genuinely quick, in each outright acceleration and point-to-point tempo. It hits Zero-60mph in 5.5 seconds, Zero – 100 mph in round 10 seconds and tops out at 150 mph. It’s small and slim with deep home windows and slim pillars, so there’s highway to spare and you may see all of it, it feels sooner and the pace is extra encompassing than in right now’s fashions. You are able to do 100 mph in a McLaren 720S and never even blink an eye fixed. Doing 60 mph within the 2.7 RS it seems like 100 mph and you might be enthralled by the expertise. Too many fashionable vehicles of nice tempo slip up right here; the 911 RS 2.7 is extra usable and gratifying than any of them.

It’s such a straightforward automobile to drive quick too. The rear engine and the plentiful high-revs torque merely make this a automobile steerable on the throttle. The sound is unmistakable – a deep bass pushed yowl overlapped with fast-paced tapping and the push of accelerated air. The upper the RPM, the higher it sounds. 

Blasting round roads from apex to apex, the benefits of lightening this Porsche present in each attribute. The journey is firm and you may really feel the identical highway imperfections by means of the seat as you sense by means of the steering. The steering is gentle however not particularly fast. The texture by means of it simply excellent. It tugs right here and there so you may really feel each bump and alter within the highway. Flip in and the steering weights up because the tires grip, however lightens as quickly as I goal for the following nook. It’s an early seventies automobile so in case you carry an excessive amount of pace the nostril pushed huge, however in reasonably quick highway driving it’s exhausting to get the again to step out except you might be being silly. The non-servo brakes are communicative, with a firm chunk and strong stopping efficiency. The Bilstein dampers management physique actions impeccably. Whether or not in compression or rebound, the RS maintains a rock-solid angle always, all 4 tires working collectively to provide me the boldness to push more durable.

Variations between the Light-weight and Touring variants are a direct reflection of the philosophy of every automobile. Within the Light-weight (Sport) model you get the total unmuffled expertise too due to the shortage of sound deadening. All the things is louder, extra pronounced and extra bodily. The steering on the Touring mannequin feels only a bit heavier, however that doesn’t imply it may be faulted as a bad-handling automobile. The place the Light-weight has a uncooked feeling, the Touring feels way more refined – which was Porsche’s intention. The variations in consolation, nimbleness, acceleration, and consumption noise are what separate the 2. The Light-weight is pure efficiency, a street-legal race automobile that’s sooner than the Touring.

Consumers Information

Based on analysis from the Discovery Channel, the Carrera 2.7 RS is the quickest appreciating automobile up to now decade. In 2004, costs hovered round $101,350 however shopping for one right now would set you again over $779,600. The rarer Light-weight fashions go for much more.

Whereas 2.7 RSs are enjoyable, quick and completely addictive, sadly with these escalating RS costs, most house owners don’t drive them a lot, or in any respect. The excellent news is that at these costs the vehicles are properly stored and are in nearly excellent situation. Upkeep is nearly at all times updated and only a few usually are not cared for properly. 

Our suggestion for potential patrons is to hope that the bubble will burst on 2.7 RS costs and swoop in after they do. For billionaires on the market seeking to have the last word Porsche of their assortment, nab a 2.7 RS, you gained’t be disillusioned. When you drive one you will notice why these with the required funds will hand over extraordinary quantities of cash to name one their very own.

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