Holden Commodore Problems

The dizzyingly high prices being realised for the XY Falcon GTHO Phase III in recent times has led to a rethink of values right across the classic car market. While the Phase III HO has grabbed the headlines with cars selling well in excess of half a million dollars, other lesser Australian muscle car classics have also appreciated in its wake. When the price of the Phase III became beyond the reach of all but the very well heeled those who wanted a Phase III turned to the regular XY GT and its price escalated as a result.By the time it finished every local muscle car classic had increased in value and the search was on for any that had yet to really take off. The early classics, the Falcon GTs, Monaros, Toranas, Chargers and the like were pretty much out of the picture having already had, in some cases, some pretty hefty price hikes.It was in the later group, from the 1980s and early 1990s that there was some cars, like the VN Commodore SS Group A, that still had some potential to appreciate in value in the future.The trick was to decide which ones had the potential and how high the prices might climb. When selecting cars for their potential to increase in value it’s important to tick a number of boxes, namely, rarity, heritage and desirability. The VN Commodore SS Group A ticks all of those boxes. Just 302 were built, they were built for racing and they’re very desirable.MODEL WATCH The VN Group A was born out the need for Holden to go racing. The company had been a long-time supporter of touring car racing and held on through the 1980s when the local racing authority adopted Group A racing rules from Europe. Group A was conceived by European carmakers to promote the cars they were building and selling to the public in their home markets, it was much like the old Production car rules here in the 1960s and ’70s.One of stipulations of Group A was that any carmaker wishing to compete had to build a run of 5000 production cars, after which they could then spin off a special racing model. It too had to be built and sold to the public, but it could have a number of special features aimed at making it a better racing car.The VN Commodore SS Group A was such a car. It was the last so-called ‘homologation special’ Holden built for Group A before the rules were changed to the current Supercar V8 formula, which doesn’t require any special models to be built in production.The VN Group A story really began under the bonnet. The fuel-injected 5.0-litre Holden V8 was virtually all new from top to bottom and produced 210 kW at 5200 revs and 400 Nm at 4000 revs. Under full acceleration it would race from 0 to 100 km/h in just over six seconds and account for the standing 400-metre sprint in 15 or so seconds. To cope with the torque Holden engineers equipped the VN Group A with a six-speed manual ZF gearbox lifted from the American Corvette.The suspension was thoroughly reworked with higher rate front and rear springs, heavier anti-roll bars, and Bilstein shocks all round. Special Holden designed 17x8-inch alloy wheels were wrapped in 235x45 17-inch Goodyear Eagle tyres to give it the grip it needed.Compared to the Walkinshaw VL that preceded it the VN Group A was fairly subtle. The body kit consisted of quite modest spoilers front and rear, neat side skirts, but a power bulge in the bonnet and a sizable boot lid wing gave it a measure of menace. Holden also developed a special red to satisfy their dealers’ desires for the VN to recall the early red VL Group A, but added a touch of blue to make a little less vibrant.IN THE SHOP Few of the 302 VN SS Group A Commodores Holden built would have been driven daily as a regular VN would have been. Most will have been used for play purposes and left to sit in the shed for most of their lives. But leaving a car unused for long periods can be a recipe for disaster so look for signs of regular use. Just starting them regularly and driving them around the block is not enough to keep them in good order, they need to be driven for long enough to thoroughly warm up the engine, gearbox and diff, and operate the brakes a number of times.The best cars are the ones that haven’t done a lot of kilometres, but have been looked after none the less. Before handing over your cash make sure it is a genuine VN Group A, never assume anything, and check to make sure it has all of the special equipment it should have.IN A CRASH Built prior to the widespread use of airbags the VN Commodore SS Group A has to rely on its body structure and seat belts in a crash. But it has a competent chassis package, responsive steering, good brakes and tyres, so there’s every chance a skilled driver could dodge a collision.OWNERS SAY Jamie Boatwood’s father-in-law bought a VN Group A in 1993 and he and his wife inherited it when his father passed away. Jamie was with him when he bought it and was allowed to drive it on very rare occasions over the years. He says it looks fantastic and drives beautifully. The twin throttle body set up matched with the six speed transmission make it a really special drive, the beauty is you can just ‘cruise’ and enjoy the experience or give it a boot full and hold on. He drives the car probably every four to six weeks and the rest of the time it remains warm and cozy under its car cover locked away safely.Con Sarvanakis has owned the fourth VN Commodore SS Group A built for six years. He bought it from a mate after his VL Commodore Group A had been stolen. He says he wanted a car with power that handled well on the track. He also says he love’s the VN’s shape and the fact that it’s a luxury car that can be driven hard or gently.LOOK FOR • tough muscle car looks• rare, but useable classic• awesome performance• last of the supercarsTHE BOTTOM LINE A classic Australian muscle car that can be driven daily and will in time appreciate in value.RATING 85/100

Peter Brock’s name will always be synonymous with Holden. The late great driver forged his relationship with Holden with a string of sensational race victories in the 1970s and will forever be remembered as a Holden hero. Never was the bond between Brock and Holden stronger than it was in the early 1980s when Brock set up his own car company and produced a series of race-bred road cars based on the Holden Commodore. There were many great HDT-branded Commodores, but one of the greatest was the ‘Bluey’, the born-to-race Group A Commodore built for the new international Group A racing rules in 1985.MODEL WATCH In 1985 Australia’s touring car racing changed from the home-grown rules that has been in place since the early 1970s to a new formula devised in Europe. The local rules had moved touring car racing away from the street by allowing manufacturers wide ranging freedoms to modify their production cars to suit the track, but the new overseas rules were more restrictive and they reintroduced the requirement to build at least a limited run of production cars to qualify for racing.The VK SS Group A was the first of these so-called ‘homologation’ specials Holden built during the Group A era. It was based on Brock’s HDT SS Commodore, which itself was based on the Commodore SL, the lightest model in the Holden range. All were painted ‘Formula Blue’, hence the nick-name ‘Bluey’ by Brock enthusiasts, and featured a Brock-inspired ‘letter box’ grille and a body kit derived largely from Brock’s previous Commodore racers.Inside it had special blue trim, full instrumentation and a Mono leather steering wheel.Underneath the Group A had a similar suspension set-up to that on Brock’s SS Group Three, with Bilstein gas struts and shocks, and SS springs. Like the regular SS it had a 14 mm rear anti-roll bar, but there was a much heftier 27 mm bar at the front.Brakes were lifted from the Brock SS Group Three, while the wheels were HDT’s 16x7-inch alloys and they were wrapped in Bridgestone Potenza 225/50 rubber.Under the bonnet sat a specially tweaked 4.9-litre Holden V8. Under the Group A rules the Commodore would have been heavily penalised with extra weight had it raced with a regular-sized Holden V8, so the engine’s capacity was reduced from 5.044 litres to 4.987 litres by reducing the stroke to squeak in under the 5.0-litre limit.The rest of the engine drew heavily on Holden’s past racing experience, and included cylinder heads modified by engine guru Ron Harrop, heavier L34 conrods, heavier Chev/L34 valve springs, Crane roller rockers, a lumpy Crane camshaft, Rochester four-barrel carb, matched inlet and exhaust ports, double-row timing chain, lightened flywheel, HM headers, and Lukey mufflers.All up it produced 196 kW at 5200 revs and 418 Nm at 3600 revs, an increase of 19 kW over the regular Holden V8 with equal torque. It was also a more free-revving engine and Holden lifted the red-line by 1000 revs from the standard engine’s limit of 5000 revs. Backing up to the new engine was a stock Holden M21 four-speed manual gearbox.Tested at the time the VK Group A would reach 100 km/h in around seven seconds, and cover the standing 400-metre sprint in 15s. It was quick for its time, handled and stopped exceptionally well, and looked great with an unmistakable Brock road presence.Under the Group A rules Holden had to produce 500 cars before they could race it. These were built on the Holden production line and then shipped to Brock’s factory in Port Melbourne where it was completed.IN THE SHOP Under the Brock skin it’s a Holden Commodore and subject to the same issues that afflict regular Commodores. Under the bonnet look for oil leaks around the engine and power steering. Inside look for wear on the light blue trim as it doesn’t wear well, and check the dash pad for cracks and distortions through exposure to the sun. The good news is that most owners treasure their cars and look after them accordingly. The most important thing is to make sure it’s a genuine Group A model and not a fake.IN A CRASH Safety was in its infancy when the VK Group A was launched, so it lacked the systems now taken for granted. There were no airbags, or ABS, and stability control was still years away from reality. In 1985 cars mostly fell back on body strength and crumple zones, while drivers had to rely on seat belts in a crash. But the VK Group A did have quite good, at least for the time, active safety with its responsive handling and good-sized disc brakes.AT THE PUMP With a highly-tuned V8 under the bonnet the VK Group A is never going to be a fuel-miser, but fuel economy is something few owners would care about. The VK Group A is a sunny Sunday car, it’s not likely to be driven daily, so fuel consumption is of a lesser concern to those who own it. It requires a high-octane fuel, and unless it’s been modified for unleaded it requires an additive. Expect to see economy figures of 15-17 L/100 km, but it depends on driving style.LOOK FOR • Classic Aussie muscle• Brock cred.• Authenticity• V8 performance• Responsive handlingTHE BOTTOM LINE A great Aussie classic muscle car built by a true legend of motorsport.RATING 85/100