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Scarab Mk II Chevrolet

Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet
Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet
Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet Scarab Mk II Chevrolet
Click here to save all images    Image credits: Wouter Melissen 

    

Click here to download printer friendly version A golden age for American road racing dawned in the second half of the 1950s. The V8 engined 'backyard specials' were quickly replaced by purpose built sports cars, which were predominantly sourced from Europe. The 1958 season was expected to be particularly competitive as revised regulations left all big-engined racing cars obsolete for major international races like the 24 Hours of Le Mans. Many of these cars were not ready for retirement and found their way into the hands of American racing drivers. Going against the grain, the young heir to the Woolworth fortune Lance Reventlow decided to build his own car instead. Together with his friend Bruce Kessler he had toured various European factories in 1957 and concluded that he had seen nothing that could not be done in the United States. He was just 21 years of age at the time.

To ensure his new machine would be up to the challenge, Reventlow had his chief mechanic Warren Olson hire the best designers and builders. Among them were former Kurtis fabricators Dick Troutman and Tom Barnes, and engine wizards Jim Travers and Frank Coon, who would later form Traco. Reventlow also called in the help of legendary racer and designer Ken Miles to draft up the chassis. The final piece of the puzzle was Chuck Daigh, who was hired as both as a driver and a drivetrain specialist. Reventlow Automobiles Incorporated was led by Olson and set up shop in North Hollywood, California. Within months after assembling the engineering 'dream team' the first sports racer rolled out of the shop. Reventlow dubbed it the 'Scarab' after a dung beetle that was considered sacred in Ancient Egypt.

Reventlow had one big advantage over the Europe sourced competition; he could build a car specifically for American 'stop-go' tracks, which were quite different than their much faster European counterparts. Accordingly he asked for a car that was compact, light and above all able to put its power down very well. Inspired by the Mercedes Benz 300 SL, Miles penned a design for a spaceframe with enough room for Olson and his men to make their own interpretations. The suspension was equally advanced through double wishbones at the front and DeDion axle at the rear. Making an all American racing car meant that Reventlow had to make a compromise and use drum brakes instead of the superior British discs. The only 'inconsistency' was the Morris sourced rack-and-pinion steering box.

The very American Corvette V8 formed the basis for the Scarab's powerplant. Although by the time Travers and Coon were done with the engine, it was a different beast altogether. The first order of business was to increase displacement from the original 4.6 litre (283cid) to 5.5 litre (339cid) by boring and stroking the V8. The enlarged engine was equipped with Hilborn fuel injection and the intake manifold sported eight very stylish intake trumpets. With all modifications in place, the V8 was good for anywhere between 360 and 385 bhp, most of which was available from very low revs. The engine was mated to a Borg-Warner four-speed gearbox, which had an aluminum casing. An aluminum body styled by 19-year old Art Center School student Chuck Pelly, rounded off the package. The completed machine weighed in at a very competitive 860 kg or 1900 pounds.

Reventlow debuted the 'Scarab Mk I' early in 1958, but he was not immediately successful. The first noteworthy result was a third behind two Briggs Cunningham entered Listers at a Sports Car Club of America (SCCA) race on the Virginia International Raceway. The Scarab's first victory came much closer to home in Santa Barbara in June of 1958. While Reventlow raced the prototype, two more cars were assembled at the shop. Referred to as Mk IIs, they featured slightly larger tubes for the frame, wider track and right hand drive. It is commonly believed that this was done for the additional space available on the right side of the gearbox. Scarab enthusiast Don Orosco however told us that they switched simply because all the Europeans did it as well. Chuck Daigh drove one of the Mk IIs alongside Reventlow in the Mk I and together they dominated the remainder of the season. The highlight of the year was a closely fought victory during the prestigious Times Grand Prix at Riverside. Daigh beat the 440 bhp Ferrari 412 S piloted by future world champion Phil Hill after swapping the lead many times. A fitting finale of the season were two victories for Reventlow during the Nassau Speed Week.

With America conquered, Reventlow looked at taking on the Europeans on their own turf. The much tighter World Championship regulations called for a maximum displacement of just three litre. With his options limited to American engines, Reventlow commissioned the construction of a three litre version of the four-cylinder Offenhauser Indy engine. It was installed in the second Mk II, but replaced by a conventional V8 after just one race as the heavily vibrating 'four' was no match on power for the six and twelve cylinder engines used by the competition. At the end of the season both Mk IIs were put up for sale and raced with great success for several seasons in the hands of the likes of Augie Pabst and Carroll Shelby. Harry Heuer was still able to win the SCCA B-Modified championship in 1961 against the 'superior' mid-engined European racers. The Scarabs remained competitive well into the 1963 season. Reventlow had his personal Scarab converted into a road car and embarked on an even more ambitious Formula 1 project.

The Scarab name was used for three more racing cars, including the ill-fated Offenhauser engined Formula 1 cars and a mid-engined sports car. None of these were particularly successful and certainly did not live up to the expectations set by the first Scarab racing car. In the early 1960s Reventlow left the motor racing scene as quickly as he had entered it just a few years earlier. He nevertheless left a big mark and today the Scarabs are considered to be among the finest front-engined sports cars produced. They are really only rivaled by the Chaparral 1, which was also built by Troutman & Barnes. Fortunately all three front-engined Scarabs have survived and are put through their paces quite regularly. Reventlow himself was not so lucky as he was killed in a plane crash in Colorado in 1972.

Featured is the second Scarab Mk II constructed, which is also referred to as the Scarab Mk III. It was originally fitted with the three-litre Offenhauser engine for just the one race. According to Chuck Daigh it was ''100 pounds heavier than the Chevrolet and had 100 bhp less.'' With the V8 installed the car was successfully raced alongside its sister Mk II by Harry Heuer's Meister Brauser team for several more seasons. Today this exceptional racing car is part of the fabulous Collier Collection. For the 2008 Monterey Historic Races, John Morton was handed the 'keys' and he did not disappoint. The highly experienced American racer won his race handsomely often powersliding the Scarab out of the corners. In the opening laps he had to fight off the ex-Phil Hill Ferrari 412 S that Chuck Daigh had beaten almost half a century earlier.

Article by Wouter Melissen, last updated on 11 / 07 / 2008

Add your comments on the Scarab Mk II Chevrolet

 SCARAB 50th Anniversary Reunion - July 2008 at Road Am  
bobsirna
12-04-2008
I own the 25 th Anniversary Scarab MK-I tat was built for Richard Reventlow by Dick Trotman. Don Devine, Augie Pabst and I put on a Scarab Reunion at Road America last July. It was a fantastic 3 day event integrated into the vintage weekend festivities. One of the high lights was the Saturday dinner where we celebrated all things SCARAB. Chuck Daigh was eulogized, all the Reventlow Scarab team members present were interviewed and then the Nickey Chevrolet, and Meister Brauser Team members in the room were interviewed. A 2 hour DVD has been produced documenting this event. It has 50 min of highlights of the weekend including about 20 minutes of on track images of Scarabs at speed. The second part is one hour and 10 minutes of the Saturday dinner with all the interviews. Great stuff if your are a fan of all things SCARAB.
     

General specifications
Country of origin United States
Chassis number 003
Numbers built 2
Produced in 1959
Body design Chuck Pelly

Engine
Configuration Chevrolet 90º V 8
Location Front, longitudinally mounted
Construction cast-iron block and head
Displacement 5.555 liter / 339 cu in
Bore / Stroke 101.6 mm (4 in) / 85.7 mm (3.4 in)
Valvetrain 2 valves / cylinder, OHV
Fuel feed Hilborn Fuel injection
Aspiration Naturally Aspirated

Drivetrain
Chassis/body aluminum body on chrome-moly tube spaceframe
Front suspension double wishbones, coil springs, tubular shock absorbers
Rear suspension DeDion axle, radius rods, Watts linkage, coil springs
Steering rack-and-pinion
Brakes drums, all-round, rear in-board
Gearbox Borg-Warner T10 4 speed Manual
Drive Rear wheel drive

Dimensions
Weight 862 kilo / 1900.4 lbs
Wheelbase / Track (fr/r) 2337 mm (92 in) / N/A / N/A

Performance figures
Power 385 bhp / 287 KW
BHP/Liter 69 bhp / liter
Power to weight 0.45 bhp / kg

Resources
Suggested reading Vintage American Road Racing Cars 1950-1970, by Harold W. Pace and Mark R. Brinker
Related articles
Useful links


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