Audi original quattro engine conversion and complete restoration-

2Bennett Audimotive  High Performance Audi Parts & Service 530-758-7325  Davis, California USA

Completed project.

This is the story of a 1984 Audi quattro rebirth.

Follow the story below from Black sheep to White swan.


Many images and completed project photos.


Starting point. 1984 original quattro.

This coupe has served its owner well. A daily driver in the snow of Lake Tahoe and weekends at the racetrack. 2Bennett has service this vehicle for many years, kept it very reliable, and now it is time for a new owner and a rebirth.


Begin July 20 / 2011

The car in this story has many upgrades and even a color change complete paint job.



Thanks for the confirmation. Here's a brief and honest write up on what got me into restoring an ur quattro.

I've been a car enthusiast since my early teen years and have own and/or driven some memorable vehicles in my lifetime. I have many fond memories of riding in a neighbor's 1966 Lotus Cortina, driving my dad's 1969 Boss 302, my very own 1971 Triumph Bonneville (a motor bike) and a friend's 1973 911S. But one thing I remember most vividly is seeing ABC Wide World of Sports cover a rally event back in the 80's that featured Group B rally cars from the era. A quattro won that particular event. Having never observed that type of racing before, I was amazed by the speed and car control skills that the cars and drivers could achieve and also the craziness of the spectators standing alongside the roads while these amazing machines flew by at insanely high speeds. The memory of that still remains with me to this day.

Fast forward four decades. I am an engineer in my 60's, about to retire after 40 years in the business and still the same car nut I was when I was in my teens. I own a W12 Phaeton (one of the best long distance touring cars ever designed) and a 997 GT3 (a track car you can drive on the street). Suddenly about three years ago, I started thinking about that Group B quattro I saw back in the 80's. One thing led to another and that led to me 2Bennett Audimotive. I started dreaming about restoring an Ur quattro and kept browsing the 2Bennett web site often (there was a green '83 Ur quattro for sale at the time that got my attention but was snatched before I could make up my mind). I got historical books and magazines on Audi, Auto Union and the other brands that make up the four rings in the Audi logo and read them cover to cover (I probably have more historical knowledge of Audis than the folks who sell them). Finally I decided life is too short and might as well go and live my dream. So here I am anxiously waiting to drive a car that I first saw many, many years ago on TV. You have my permission to use all or portions of the write-up above on your website.

> Regards,

Francis ... >-



There were a few problem areas with the body. This large dent in the fender as well as surface rust from years of driving in the snow all must be addressed. Time to strip the car down to a bare chassis and fully rebuild and upgrade everything.

This former Black Beauty will now be rebuilt and reborn with modern components and systems that will transform it into a virtual new car. The looks of an automotive icon and the ride and drivability of a vehicle fresh off the performance car lot.


image We took it all to bare metal for a fresh start and began reshaping it.
image Full pressure wash of the underside before drive train removal, mid body work. All dirt and grime is removed from the chassis for refinishing.
image Engine removed for new brackets and mounts and then new paint.
image AAN Code 20 valve turbo 5 cylinder engine ready for the 2Bennett rebuild. Removed from '93 S4. We will be rebuilding the head and all new bearings and connecting rods for the bottom end as well as oil pan baffling to prevent oil starvation during track driving.
image Doors prepared for painting on the inside. With a color change paint job, all the parts must be removed to be painted inside and out.
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  Following sheet metal work, a multi stage prime and seal system with wet sanding between each stage.
image 2Bennett bodyshop performed a complete color change paintjob.
quattro restoration Doors, hood, bumpers, and decklid are all painted off the car to ensure a better than original outcome.

Now in it's assembly bay, the entire suspension and drive systems are removed for restoration and upgrades.

The masking paper and yellow tape are to protect the new paint while the delicate operation of reassembly commences.

image Rear subframe with 2Bennett bushings and swaybar kit installed. The car also has 2B height adjustable and rate adjustable coilover suspension.

The interior during the carpet replacement and wiring system overhaul. 2B meticulously blends original wiring with upgrades and the engine harness to function better than original equipment.


Audi restoration One of the improvements to the 1984 original quattro performed by 2B is to add the 1985 and later differential lock control mounted above the left knee. This gives us the ability to add three gauge where the old differential lock was [below the radio].
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Engine bay with some wiring and mount brackets for the new systems. 2Bennett wiring harness for the 2B 500w fan system and 2B modified engine harness.

Engine now 2B remanufactured and modified. RS2 manifolds mounted, 2B water pipe installed with new sensors.

Engine, vacuum booster for brakes, intercooler, intake plumbing installed.

The entire hydraulic power steering and brake booster system is being replaced by a more reliable 2B vacuum boost system.

UR Quattro 20v turbo

This photograph shows the 2B updated alternator, power steering pump, cooling fan and shroud system, vacuum brake assist system, etc.

This car is truly being transformed into a brand-new driving vehicle minus all the things that make new cars heavy and bulky.

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Engine, cooling system, Air conditioning with our 2B serpentine belt system, 2B intercooler and turbo tract all installed. New European bumpers and 2B OE. replica rear spoiler installed. 2B 3" Turbo back exhaust.
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2Bennett Coil Program suspension with 2B adjustable camber caster mounts installed, 2B front and rear shock tower braces in place. Black [now ultra rare] tail lamp group and new windshield also installed. 2B reconditioned Fuchs wheels, 2B studs, and nuts installed.

This Quattro originally had white 15 x 6" wheels. The new owner had always wanted the original Audi Sport rally forged Fuchs wheels for this project. Fortunately we had a set in our inventory.

Fuchs wheels freshly restored. Age has caused most of the Fuchs around the world to need some cosmetics. We stripped, machined, refinished, polished and clear coated them back to life [prettier than new].

2Bennett meticulously brought many original Audi parts back to life as if they were new. Most of the parts on these cars are not available anymore. We take pride in bringing them back to life.

 Audi ur quattro Restoration
1/25/12 DONE

Below are some photos of parts highlights.

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Close up of 2Bennett all 304 Stainless Steel turbo downpipe. Note the twin Oxygen sensor inputs and very thick flanges so they never warp. True 3" downpipe with venturi flair directly out of the turbine visible in the photo. 2Bennett carbon fiber radiator shroud, 2B 4 row Aluminum radiator, 2B radiator shroud and 500 watt fan assembly. 2B radiator shrouding is on all sides of the radiator and updated AC condenser.


image 2B updated interior with Recaro power front seats, relocated late diff locks, 2B floor mats, and console.
image 2B Custom upholstered rear seats with Recaro fabric centers and Recaro leather to match front seats. The rear shelf behind the seat was a crumbled broken mess under the faded old carpet. We rebuilt it in our mold and covered the part in fiberglass. Stronger than new, we installed new speakers and fresh black carpet.
The car's owner took it to the racetrack instead of his track prepared Porsche GT3 and sent this.


'Just wanted to see how the car handled at 10/10th and it was a blast! Very predictable and confidence inspiring and the mid-range torque from the turbo is awesome. No nannies to get in the way (no ABS, no stability/traction control, no torque vectoring), just you and the car. I drove the wheels off the car and the experience was priceless!!!

:-) I can't stop grinning from all the fun I had.




MORE 2B Super Restorations HERE