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1990 Audi Coupe Quattro

 

September 2002 European Car Article below.

 
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2B 20v turbo 3B code engine converted

2B Stage2 Brakes - 330mm 2B Kit with Silver Brembo 4 piston Calipers

2B Coil Program suspension - Height adjustable coilover conversion with external adjust Koni shocks

2B Quick-Rev downpipe - 2B 304 stainless downpipe flairs at the turbo flange, 3/4" flange, internal ceramic coating

2B 3"secondary exhaust -  2B 304 Stainless, all mandrel bent single muffler

2B supreme Bushings - 2B Delrin /Stainless Steel control arm bushings

2B big KKK turbo - 2B spec. k26/27 with 2B fluid line set

RS2 exhaust manifold - Ceramic coated 

RS2 airmass sensor

RS2 intercooler mounted to 2B cross over pipe and front support

RS2 front bodywork - Factory RS2 bumper, headlights, grill emblem, clear turn signals, fog lights, B4 hood conversion, RS2 mirrors on 2B mirror mounts

Rear bumper is OE shortened and painted top to bottom + side lower sills and trim painted

2B aluminum radiator- All Aluminum radiator/ 4 row fits factory AC condenser

2B balanced engine with 2B modified head

2B Camshafts

 2B baffled oilpan - Prevents oil starvation during high-G turns

Carillo rods

S2 white instrument clusters and 3 extra gauges mounted in dash - Boost, fuel pressure, mixture

HRE 18x 8" custom built wheels- polished lip & gold centers

Sparco red suede steering wheel

Harness seat belts


2 Bennett Audimotive 1990 Audi Coupe Quattro 20V - Coupe De Gras

Wringing Ultimate Performance From An Early Audi Coupe

By Karl Funke
photographer: Rob Hallstrom

New cars are good; new cars are great. New cars are nice, straight, tight and shiny, and they exude a smell, a wonderfully refreshing, heady, nigh intoxicating odor that plays on the enthusiast's senses like no other...that new car smell. You know what I'm talking about. Yes, a new car-regardless of make or model, really-is one of my very favorite things. And without a doubt, some of the nicest new cars we've seen today have come from Audi. From matchless paint finishes to elegant, ergonomic leather-and-brushed-aluminum interiors, Audi has helped set a standard for value and quality in the new car market.

Still, there is something to be said for the older Audis, the coupes and sedans that pulled the floundering company up by its boot straps after the "unintended acceleration" debacle of the early '80s. One example of such a car is the pictured 1990 20V Coupe Quattro, owned by professional snowboarder Ali Goulet and tweaked by 2 Bennett Audimotive (2B) in Davis, Calif.

2 Bennett offers performance tuning in every area, from suspension to brakes to engine modifications, for a wide slice of Audi vehicles. Older cars are 2B's specialty, though, as this Coupe will illustrate. It showcases the full spectrum of the company's performance upgrades for this chassis.

During its production run, Audi pushed the 20V Coupe Quattro as a "luxury sports coupe." As far as actual mechanical performance, Audi's press kit lauded the Coupe as achieving "a higher level of overall performance than [was] normally associated with luxury cars" at the time. It was powered by a 2.3-liter five-cylinder engine, with a cast alloy head endowed with four valves per cylinder for the oddball "20-valve" designation. In 1990 this plant was the most powerful naturally aspirated engine yet offered by Audi in the U.S. market, producing 164 bhp at 6000 rpm and peak torque of 157 lb-ft at 4500 rpm, 89 percent of which (138 lb-ft) became available at just 3300 rpm.

Despite its merits, the naturally aspirated 7A powerplant was not part of 2Bennett's plan for wringing ultimate performance from Goulet's Coupe. 2B turned instead to another five-cylinder engine, the 3B (not to be confused with 2B), which incorporated a turbo-driven, intercooled forced-induction system to produce 217 peak bhp and a strong, extraordinarily flat torque curve, with a peak of 228 lb-ft beginning at just 1950 rpm! The 3B was released in the United States for one year only as the heart of the final incarnation of Audi's ultimate five-cylinder performance sedan, the 1991 model year 200 Quattro, precursor to today's S4.

Though on paper the 3B appears technically very similar to the 7A engine found in the Coupe Quattro, it was engineered and built to perform under high boost conditions, with a stout bottom end incorporating high-stress pistons, rods and bearings. For this reason, it was the easy choice when it came to building a suitable powerplant to motivate the Coupe.

Of course, many factory components were swapped in favor of high-flow, high-performance hardware taken from 2 Bennett's catalog of goods. A 2B aluminum four-row radiator provides augmented cooling capabilities for the mill, and a new 2B baffled oil pan was installed to guard against oil starvation during hard cornering. Some components, such as the intake, intercooler and exhaust manifold, were taken from Audi's RS2, the Euro-spec, 315-bhp stud Avant that some have described as "a five-door Porsche"; it is, incidentally, also powered by a version of the 20V motor, making fitment issues a non-factor.

The factory-issue 3B turbocharger was replaced with a high-flow KKK hybrid unit, similar to the turbo used on Audi Trans Am race cars in the 1980s. The turbo mounts to the RS2 exhaust manifold, where hot gases drive the turbine wheel and then get expelled through a 2B Quick-Rev downpipe and 3-in. secondary exhaust, all constructed from 304 stainless. Like the RS2 manifold, the downpipe features a high-velocity internal ceramic coating. All 2B exhaust components are mandrel-bent for uniform diameter and unimpeded flow.


On the cool side of things, an RS2 airbox and airmass sensor allow for augmented intake capabilities. Once compressed, the intake charge passes through a RS2 front-mount intercooler; the plastic factory plumbing has been replaced with stainless pipes fabricated by Bennett. A hand-ported 20-valve head works its top-end magic according to 2B's use of custom-ground cams and specially made valve stems and guides. Fuel enrichment and ignition duties are masterminded by one of two Bennett-hacked ECUs. For everyday driving, fuel and ignition maps are scaled back, and boost runs about 21 psi to produce somewhere close to 325 bhp, a conservative estimate according to 2B. For club or track events, or gross displays of all-wheel tire-smoking madness, 2B plugs in the "big ECU" for advanced, aggressive fuel and ignition curves and an additional 4 psi of boost. 2 Bennett claims these advanced properties, along with a little high-octane race fuel sloshing around in the tank, are good for at least another 100 bhp.

The factory transmission and drivetrain have been unaltered, other than a Sachs clutch assembly with a special 2B street disc for maximum streetable grip without painful actuation and disengagement. Ken Bennett, one half of the 2B tuning equation, stated that Audi production drivetrain components are not far removed from their race-proven counterparts; in fact, he believes the older the car the stronger the parts. Therefore, the drivetrain remains unaltered.

The suspension has been screwed down using 2 Bennett's own 2B Coil Program upgrade, a height-adjustable coilover conversion with externally adjustable Koni shocks. The brakes have been upgraded using big, slotted 330mm 2B rotors and Brembo four-piston calipers.

Possibly one of this car's best features is its understated exterior. Unless you live, breathe, eat and shit Audi, the car is aesthetically unremarkable, other than the meaty, 8x18-in. HRE wheels and Pirelli P7000 rubber at the corners. In fact, the car does remain mostly stock Coupe from the mirrors back; the front end has seen a bit more work. An RS2 bumper and headlight conversion are the first hints of what may lurk beneath, but only to the eclectic European enthusiast or the average Audi geek on the street. RS2 mirrors, mounted on 2B mirror mounts, continue the theme. Clear turn signals on the corners and a late-model B4 hood wrap up the forward modifications.

Interior treatments on the Coupe were kept even simpler. The factory instrument panel was changed over to the white-face look using an S2 cluster. Three auxiliary gauges were installed in the passenger's dash; AutoMeter Phantom series meters read boost, fuel pressure and air-fuel ratio. A Sparco three-spoke tiller replaces the factory wheel, and Sparco harnesses anchor driver and passenger in stock leather bucket seats.

Vehicles like this Coupe are what performance street vehicles should be-faster than all hell, but you'd never know just by looking at it. 2 Bennett Audimotive deserves credit for producing one mean, clean package that will get the job done, whatever is asked of it, whether it's a night out on the town or a tough day of chewing up the track. This project also serves to spotlight the latent quality inherent in an automotive marque like Audi, where power, and elegant application thereof, are not new concepts in the company's repertoire. Such attributes have been built into the cars all along. Sometimes it just takes a little wrenching to get them to really stand out.

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