Holden Commodore VL

The Holden Commodore (VL) is a mid-size car that was produced by Holden from 1986 to 1988. It was the final iteration of the first generation of the Holden Commodore and included the luxury variant, Holden Calais (VL). Between February 1986 and August 1988, 151,801 VL model Commodores were built.

Design and development

The VL Commodore represented a substantial makeover of the VK, and would be the last of the mid-size Commodores until 2018.

The designers sought to soften the lines for the VL, rounding off the panels and introducing a small tail spoiler built into the boot lid. Holden also implemented rectangular headlamps as opposed to the square shaped ones fitted to earlier models. For the top-of-the-range Calais model, the design incorporated the use of semi-retracting headlight covers, the first for a production Holden. This had been previously attempted on the never released Torana GTR-X which featured fully retractable headlights. The Calais covered headlights were the same as the regular VL Commodore headlights.

Major changes were made to the dashboard with new instruments, touch switches mounted either side controlling wipers, rear window demister, electric antenna (Berlina/Calais), and the headlight switch moved from the right-hand dash side to the indicator stalk. Heating, ventilation, and air-conditioning control graphics changed slightly, the center console offered more storage with new transmission shifter and surround.

Powertrains

Straight-six engine

A comprehensive ''Black'' engine was completely dropped in favour of an imported 3.0-litre '' RB30E'' straight-six unit designed and manufactured by Nissan in Japan. The reason for the Nissan-Holden combination was because all cars manufactured in Australia from 1 January 1986 had to run on unleaded 91 octane fuel. The previous six-cylinder ''Black'' motor was unable to do this, as was the V8, hence the later release date of this engine. As the tooling for the Holden straight-six engine had become worn by this stage, it also was not considered cost-effective to adapt the design to unleaded petrol. The new engines included features such as an Electronic Combustion Control System (ECCS) and a ram-tuned intake manifold.

Six months into its release a turbocharged '' RB30ET'' version of the Nissan engine was released. The Garrett turbo unit was fitted inside a water-cooled housing to ensure longevity. The engine received new pistons which lowered the compression ratio, while an updated camshaft was used to reduce overlap. The allure of the Commodore was quickly established particularly when the top speed was and then extended to with the addition of the Garrett turbocharger. The turbo models had larger brakes and Girlock finned alloy front calipers. The Australian Police commissioned the turbocharged models as their "interceptor" Highway Pursuit cars of choice. These interceptors were denoted by "BT1" in the model code on the Body & Option plate attached to the firewall.

GM also sourced
Jatco
electronic four-speed automatic. Those that opted for a manual received 5-speed Nissan gearboxes. The turbo and non-turbo variants were designated MX7 and MF5 respectively.

Power was sent to the rear wheels through a Borgwarner 28-Spline (Turbo variants) /25-spline open center (non-turbo variant) with a 3.45 or 3.23 Final Drive ratio with a Limited-Slip version available as an option. This was taller than the ratio offered in the Nissan Skyline (3.70 Manual, 3.889 Auto) which utilised the same power plant.

The New Zealand assembled six-cylinder VLs had the 2.0-litre Nissan ''RB20'' engine six-cylinder available as an option in addition to the 3.0-litre models. The engine was mated with the Japanese ''Jatco'' four-speed automatic; the 5.0-litre (4,987 cc) V8 remained available in carbureted form with the old three-speed automatic. New Zealand models were not saddled with emission controls. The 2.0 litre engine was also used in exports to other South East Asian countries such as Singapore and Thailand. This model was also the last Holden to be assembled and sold in Indonesia, as the "Holden Calais 2000." The car was first shown in Indonesia on 19 February 1987, at a ceremony attended by the Australian ambassador to Indonesia, Bill Morrison.

V8 engine

Previously, Holden had considered discontinuing their V8 engine rather than adapting it to unleaded petrol. This was partly in response to Ford Australia's 1983 decision to drop the V8 from its competing Falcon model. However public outcry spearheaded by a media-driven "V8s 'til 98" campaign persuaded Holden to continue production. Eventually with continual developments, the Holden V8 lasted until 1999, before being replaced by the imported GM LS1 V8 engine.

The 5.0-litre V8 was released in October 1986, it still featured the familiar Rochester four-barrel carburettor, not electronic fuel injection (EFI). Now adapted to unleaded fuel, this V8 5.0-litre was boasting both more power and torque than its predecessor, now at with . GM had fitted the V8 with larger valves carried over from the previous Group A engine.

EFI did however, make its V8 debut in the VL Commodore in the evolution version of the Group A touring car homologation special, the SS Group A SV ( see below). Commonly known as "The Walkinshaw", the SS Group A SV also marked Holden Special Vehicles (HSV) taking over as Holden's official performance car partner. With the 3.0-litre turbocharged engine being the performance flagship, Holden marketed the V8 as ideal for towing due to its low-down torque characteristics. The V8 engine was mated with either the existing three-speed ''TriMatic'' automatic, or the five-speed Borg-Warner T-5 manual.

Models

Introduced in Commodore SL, Executive and Berlina variants, the VL series also included a luxury Calais model. However, this was known as the "Holden Calais" as opposed to the "Holden Commodore Calais". A limited number of Calais station wagons (198 ever produced) were offered from March 1988 through to production end in August of the same year to reduce the stockpile of wagon bodies.

File:1988 Holden Commodore (VL) Executive station wagon (20948238235).jpg, Commodore Executive wagon
File:1986-1988 Holden Commodore (VL) Executive Turbo sedan (16633686473).jpg, Commodore Executive Turbo sedan
File:1988 Holden Commodore (VL) Berlina sedan (2015-07-14) 02.jpg, Commodore Berlina sedan
File:Commodore Berlina wagon (New Zealand).jpg, Commodore Berlina wagon (New Zealand)
File:1987 Holden Calais (VL) sedan (2015-07-14) 01.jpg, Calais sedan
File:1987-1989 Holden VL Commodore Royale sedan 02.jpg, Commodore Royale sedan (New Zealand)

The V8-powered models were introduced in October 1986. The following year, a special edition Commodore Vacationer was offered. To commemorate the 1988 Australian Bicentenary, an aptly named "Series 200" sedan was briefly offered from March 1988. The Series 200 was issued with two-tone champagne paintwork, and featured air conditioning, power steering, electric windows, central locking among other features over the base-line Commodore SL. Only the naturally aspirated six-cylinder engine was fitted to this model.

Luxury models the GTS and Royale were also available but only in New Zealand.

Commodore SS Group A

The Commodore SS Group A was heavily modified by Holden's official performance tuner, originally the Holden Dealer Team. The SS Group A existed primarily as a homologation special, created specifically so a racing optimised version of the Commodore could be utilised for Group A touring car racing. The regulations set down by the international governing body FISA for Group A motor racing specified that a minimum of 5,000 base model cars were to be built, with a further 500 "Evolution" specials built to a certain specification prior to said vehicle being allowed to compete. Group A regulations governed many touring car series at the 1980s and 1990s including series in Australia, New Zealand, Great Britain, Japan, Italy, Germany and the European Touring Car Championship as well as the one-off 1987 World Touring Car Championship, as well as significant races like the Bathurst 1000, Spa 24 Hours and the RAC Tourist Trophy. The SS Group A model run ran from 1985 until 1992. The four models have since become highly collectible amongst Holden and performance enthusiasts.

Unique amongst all products produced by both the Holden Dealer Team and Holden Special Vehicles, these cars were referred to as Holdens, rather than as HDTs or HSVs.

November 1986 (produced until 1987) saw the introduction of the Commodore SS Group A which was developed from the Commodore SL by Peter Brock’s HDT Special Vehicles organisation. 500 examples were built, all of them in "Permanent Red", by Holden to allow the model to be homologated for Group A racing. Along with better aerodynamics of the VL Commodore over the VK model, the VL SS Group A featured larger and more aggressive front and rear spoilers, as well as a small, open bonnet scoop to help feed the carburetted V8 engine the colder air from the base of the windscreen. The VL Commodore was the last V8 powered Holden to feature a carburetor. From the Holden VN Commodore (and the VL SS Group A's successor the VL SS Group A SV), all Holden V8 powered cars would use Fuel injection.

The cars were assembled at Holden's Dandenong plant and modified at the HDT Special Vehicles located in Port Melbourne.

This was the last Group A Commodore produced by the HDT after Holden sensationally ended its relationship with Brock and the team in February 1987, after Brock had begun fitting a device known as the "Energy Polarizer" to HDT vehicles, including the VL SS Group A. Brock claimed that the Polarizer, a small box with crystals and magnets encased in an epoxy resin, aligned the molecules around the car and "made a shithouse car good". Regarded as pseudoscience by Holden and the vast majority of the Australian motoring community, a new VL series "Director" model was released by Brock in February 1987 which incorporated not only the Polarizer but also a new independent rear suspension system developed by HDT without Holden's approval. Holden ended its association with Brock as he had refused to supply a Director for test purposes and Holden was therefore unwilling to honour warranties on any cars thereafter modified by Brock's HDT operation. Holden's decision to end its relationship with Brock ended the HDT being their 'factory' team, an association which started in 1969.

After dumping the HDT, Holden formed the Holden Motor Sports Group in late February 1987 and signed Roadways Racing (Allan Grice) and Perkins Engineering (Larry Perkins) as their factory backed teams for the year, with both Grice and Perkins Commodore's wearing Holden Motorsport logo's, though both Perkins and Grice claim that the support was almost in name only and they received no financial assistance from Holden. Ironically, in late 1986 before the Holden-HDT split but with the relationship already fraying due to Brock's fitting of the "Energy Polarizer" to HDT modified cars, Brock had predicted that Holden had become weary of the HDT's growing independence and wanted to start its own specialised vehicle operation (ultimately Holden Special Vehicles) and the Holden Motor Sports Group. Up until the split with Brock and the HDT, this was denied by Holden who claimed they were happy to continue their on-going relationship.

Motor racing

;Touring Cars
The SS Group A was twice a winner during the inaugural World Touring Car Championship in 1987. Allan Moffat and John Harvey drove their Rothmans sponsored VL Commodore to victory in the very first race of the championship at Monza in Italy. Initially finishing 7th on the road, the pair were declared winners after the entire BMW Motorsport crew running the new BMW M3's that finished the race 1–6 were disqualified for running 80 kg underweight thanks to the use of non-homologated kevlar and carbon fibre body panels. Moffat and Harvey would later go on to finish a brilliant 4th at the Spa 24 Hours on the famous Spa-Francorchamps circuit in Belgium, before Moffat abandoned the Commodore and returned to rivals Ford (for the first time since 1980) and their highly touted new challenger, the turbocharged Ford Sierra RS500.

The HDT spec Commodore's second win in the 1987 WTCC was at the 1987 James Hardie 1000 at Bathurst. Peter Brock and his HDT had a well publicised split with Holden in early 1987 which saw the factory stop all support for the race team. Running as a privateer at Bathurst for the first time since 1977, Brock finished 3rd on the road driving with Peter McLeod and regular HDT co-driver David Parsons in the team's second car (#10) after his own car blew its engine on lap 34 with Parsons at the wheel. The two Eggenberger Motorsport Ford Sierra RS500's that finished 1st and 2nd were eventually disqualified in February 1988 for illegal bodywork (wheel arches that were 1 size too big) and Brock's HDT were declared winners giving the HDT spec VL Group A SS Commodore two wins from the 11 race WTCC. Allan Moffat's big money gamble to run a Sierra backfired as the car he leased from British driver/engineer Andy Rouse proved to be woefully unreliable. Moffat later claimed that he should have stuck with his original entry for Bathurst, his VL Commodore, stating that his Commodore (which at the time was in storage in Europe) was in much better shape than Brock's #10 which, by the HDT's own admission was cobbled together from whatever spare parts they had and was only run due to the teams contract with primary sponsor Mobil which called for two race cars. The HDT openly admitted surprise to the car finishing the race believing before the start that it would have been lucky to last 30 of the races 161 laps.

Until 2014, The Brock / McLeod / Parsons VL Commodore Group A SS held the record at Bathurst for winning the race from the lowest grid position, with Brock having qualified the car in 20th place. Ironically this was actually against the rules as he had already qualified his own #05 car in 11th spot and no driver can qualify two separate cars for grid position the race. Had the error been corrected, the #10 car would have started the race from 27th with Brock's time serving only to qualify him in the car.

Larry Perkins, who had continued to race the well developed VK rather than upgrade to the VL (which both Brock and Allan Grice reported small teething problems throughout the 1987 Australian Touring Car Championship), was forced to replace his VK when it was badly damaged on just the second lap at Bathurst with a HDT VL, debuting VL in the Bob Jane T-Marts 500 WTCC round at Calder Park Raceway a week after Bathurst. He later qualified his new car on pole and led the early laps of the Group A support race for the 1987 Australian Grand Prix in Adelaide before tyre wear and failing brakes on the demanding Adelaide Street Circuit forced him to drop back to 3rd at the finish. In the 1988 Australian Touring Car Championship Perkins ran the VL as the official factory team backed by the then new Holden Special Vehicles (later to be replaced by the Holden Racing Team). Against the lighter (by approximately ) and more powerful (by up to ) Ford Sierras, as well of the introduction of the new Nissan Skyline GTS-R turbo, Perkins and the VL simply didn't have the speed to successfully compete for wins in the ATCC's shorter sprint races, while the weight of the car () usually saw heavy tyre wear. His best result being 3rd in Round 7 at Sandown after some of the faster Sierras had struck mechanical trouble. Perkins would go on to finish 7th overall in the championship.

;AUSCAR
The VL model was also successful in AUSCAR racing. Races were primarily held at the Calder Park Thunderdome in Melbourne, a quad-oval speedway with 24-degree banking in the turns for high speed built by millionaire tyre retailer Bob Jane. The Thunderdome was noted as the first NASCAR style high-banked oval built outside of North America. Sydney based racer Tony Kavich won the 1988/89 Australian AUSCAR series using a VL Commodore, while Albury based Brad Jones won the first of what would be five straight AUSCAR titles in 1989/90 also driving a VL.

VL model AUSCAR's used a variation of the HDT's SS Group A body kit, with the only difference being that the cars had a regular VL bonnet without the air scoop of the Group A version. In AUSCAR racing, all Holden Commodores used, including the VL, would use the 5.0 L Holden V8 engine, though Commodore runners had the choice of also using the Group A developed 4.9 L V8. However, unlike in Group A racing, the weight of the AUSCAR remained the same whichever size engine was used.

Commodore SS Group A SV

The SS Group A SV was produced in 1988 and was only available in one colour, Panorama Silver (named after the renowned Australian Mount Panorama Circuit). It was assembled at Dandenong, Victoria (Holden) and modified at Clayton, Victoria

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