Description:

Background

Team Obermoser Jorg produced TOJ racing sports cars and formula cars of their own design and engineering from 1974 to 1981.  The final improvement evolution of the TOJ sports car chassis was designed in 1977 as the SC206 for the 1978 racing season and won the 1978 championship. It is the most successful of the TOJ sports cars. The initial group of perhaps five SC206 chassis were built 1977 to 1979. The first SC206 racing appearance was at Nurburgring on 2 April 1978.  Following a change of business ownership in 1979, the last two SC206 chassis, SM01 and SM02, were built utilizing the 1977 drawings. The car presented here is SM02 which is reported to have received some suspension component updates.  The first known race appearance of SM02 was for an Interserie event at Zolder on 11 October 1981.

Current Status

TOJ SC206 SM02, with 2.0L BMW 12/7 engine, Kugelfischer (Bosch) mechanical fuel injection, is in exceptional condition.  While it was acquired in good complete condition in 2020, the car had been in private storage and inactive for many years.  It has been professionally restored and recommissioned by Downing Atlanta, Inc.  It was fully disassembled, inspected, and reassembled with new parts as appropriate.

New fuel cell

New fire suppression system

New front bodywork

New sidepods

New rear bodywork

New intake air scoop

New custom intake airbox

New custom air filter

New front bulkhead crossmember

New driver seat, seat mounts

New electrical wiring

New temperature gauges

New fabricated water tank

New fabricated radiator shrouding

New fabricated dashboard

New fabricated overflow catch tank

New front suspension arms

New spherical joints

New front uprights/hubs

New road racing suspension components

New Ohlins adjustable dampers

New BBS wheels, two sets

Rebuilt Hewland FG 400 5-speed limited-Slip transaxle

New Hewland ring and pinion gears

New Hewland transaxle bearings, all

New steel braided brake lines

Rebuilt brake calipers

Rebuilt brake master cylinders

Refurbished original brass radiator

New brake bias balance bar

New brake pads

New water-coolant hoses

New fuel supply hoses

Fuel injectors tested/cleaned/rebuilt

New ignition wires

Confirmation

This car was raced by Jim Downing on 29 April 2023 in Historic Sportscar Racing’s (HSR), The Walter Mitty event, at Road Atlanta in the HBSR class.  He qualified the car in pole position and finished the race 1st in class and 2nd overall.  The car was last driven in a brief shakedown re-confirmation session on 25 November 2025.

Engine Status

The car owner during the 2010 time-period had the 2.0L BMW M12/7 engine rebuilt in Germany by Randlinger Motorenbrau.  He ran one validation hill climb event after the engine build and estimates having raced about 15 kilometers (10 miles) in that event.  Jim Downing has driven the car in shakedown, testing, or historic racing about 47 laps (120 miles). The engine is estimated to have about 130 race-pace miles since the engine build.

In-period Racing History

Documented race history has been researched. During 1981-1986, TOJ SC206 SM02 raced in 18 Group 6 road circuit races in European Interserie, DRM, and ADAC events. It achieved 56% podium finishes with six 2nd place and four 3rd place finishes.  In 1987, the setup was adapted by Bernard Chamberod for Group C3 European hill climb racing.  Chamberod won numerous hill-climb championships winning 19 of 24 events: 79%.

Hubert Striebig 1981-83                         European road circuit racing

Jacques Heuclin 1984-85                     European road circuit racing

Bernard Chamberod 1987-93            European hill climb racing

About Downing Atlanta, Inc.

Downing Atlanta has built, designed, and engineered numerous prototype racing sports cars and GT race cars over its 40+year history.  They achieved 7 professional driving championships and 3 manufacturer championships.  The record includes class wins at Daytona 24-hour, Le Mans 24-hour, and Sebring 12-hour races. Of 280 professional races driven, Jim Downing finished 1st 11%, 2nd 16%, 3rd 18%; with 45% podium finishes.  

Ownership History, estimated dates

1981 - 1983     Hubert Striebig

1984 - 1986     Jacques Heuclin

1987 - 1998     Bernard Chamberod

1998 - 2005?  Patrice Auguier

2005?                 Guido Enderle, intermediary

2005? - 2016  Bob Storz

2016 - 2020     Phil Daigrepont

2020 - now       Jim Downing

 

Dimensions, Specifications

Aluminum monocoque chassis with tubular rear subframe

Body length     164.5”                4178 mm

Wheelbase      96”                    2438 mm

Width, front     69”                    1753 mm

Width, rear       72”                    1841 mm

Height             26.7”                   678 mm             at cockpit

Height             33”                     838 mm             at rear body/wing mount

Weight              1323 lbs.                600 kg                with 3.5 gallons fuel, no driver

Independent suspension front and rear

Disc brakes, inboard at the rear

BBS wheels: 13”x10.5” front, 13”x14.5” rear

Longitudinal rear mid-engine, rear wheel drive

BMW 1993cc M12/7, DOHC, 4 valves/cylinder, normally aspirated

HP 300 at 9700 / TQ 180 lb.-ft

Hewland 5-speed FG 400 limited-slip transaxle, FT gears

Currently geared for 153 mph at 9000 rpm

Logbooks in hand

French Passport number:  008803

SOVREN logbook number: 1066

HSR logbook number: A-1639

SVRA logbook number: 23-015

 

Spares

Brake rotors, vented, slotted

Original set of 4 wheels

New front bodywork

Original front bodywork

Original rear bodywork

Original side pods

Original rear wing support bar

Original front brake ducts

Original dashboard, gauges

Original dead pedal

Original front hubs (cracked)

Hill-climb suspension components

Two front lower A-arms

Two original front lower A-arms (bent)

Keyword Search Terms:

TOJ, Hillclimb, Group C