In the late 80s, Chrysler and Mitsubishi Motors created a joint venture and worked on developing several different models. They shared the same platforms and engines, and the end product was named Diamond-Star Motors (DSM) cars.
DSM cars came as the result of joining the engineering of American and Japanese industries. These cars were edgy and sporty, with good performance and handling. The most popular DSM models were Mitsubishi Galant and Eclipse, Plymouth Laser, and Eagle Talon. Today, DSM cars cost a hefty price and are quite popular in the United States.
DSM cars offer plenty of power, and they stick to the road like glue. Their design was ahead of time, so they are still eye-catching. All this above developed a cult following of these cars, which is still very strong in the United States. Stay with us, and you will learn everything about these cars. We will go through the models, when they were made, what are their common problems, and how to maintain them.
What Does DSM Stand For in Cars?
What is a DSM car? A DSM or Diamond-Star Motors is a concept that goes back to the 1970s when Chrysler bought 15% stakes in Mitsubishi Motors. Chrysler wanted to import smaller, compact size cars, which the market in the US was still developing.
The Chrysler imported the Mitsubishis until 1982, when the Japanese side wanted to open direct dealerships and sell their cars. In 1985. they formed a joint venture called Diamond-Star Motors, and the first factory opened 3 years later in Illinois.
This corporation made two generations of cars. Each generation received a facelift, modern trim levels, and improved engines in 1995. DSM Motors was officially renamed to Mitsubishi Motor Manufacturing of America, Inc., thus ending the story of DSM.
DSM Car List and Its Popular Models
The first models that came from this factory were the following:
- Eagle Summit
- Mitsubishi Mirage
- Mitsubishi Eclipse
- Plymouth Laser
- Eagle Talon
These models were made between 1990 and 1994, except the Summit, which production ended a year before.
In 1994 and 1995, the DSM added new models, which included Mitsubishi Galant, Chrysler Sebring, Dodge Colt, and Dodge Avenger.
History of DSM Cars Over The Years
The first generation of DSM cars was known as a 1G DSM and was produced between 1990 and 1994. The original models were known as 1Gb and were made in 1990-1991, and they received a facelift in 1992. The first 1Gb models were known for their pop-up style headlights. The facelifted 1992-1994 1Gb models had a composite headlight set up. The best-known models of the first generation were the Eclipse, Talon, and the Laser.
The second generation of DSM or 2G DSM included models Eclipse and Talon, lasting from 1995 to 1999. This second generation brings a refurbished design of the car chassis. The sheet metal that was used for the chassis was more curved than in the first generation. The front bumper resembled a smiley face. Those design changes brought better aerodynamics and performances for all the models.
In 1995-1996, “2Ga” Models engineers added front bumpers that made them look more aggressive. These models also received sharper headlights. Side skirts also had a different style than in older models. In the back, there were redesigned back lights and new rear spoilers.
The 1997-1999 “2Gb” Models used the same 2Ga headlight but got a more aggressive look with a single raised strake on the sides. These models also got a larger and more aggressive rear spoiler.
Although the DSM as a company ceased to exist in 1995. the second generation made from 1995 to 1999 was considered to be DSM cars.
DSM Cars Performance Across Different Models
The first generation of Mitsubishi Eclipse came with two drivetrain options: front-wheel drive (FWD) and all-wheel drive (AWD). The base model came with the naturally aspired 1.8L 8 valve 4 cylinder engine. It produced 69 kWh (92hp). Other options were the DOHC 2.0L engine that produced 101 kWh (135hp) and its boosted AWD version with 112 kWh (150hp). The top offer was the GS turbo with 145 kWh (195hp).
The second generation was also offered FWD and AWD options, while the latter was reserved for the Grand Sport X trim level. The base model had a 2.0L engine that delivered 104 kWh (140hp). An improved GS-T trim came with the same 2.0L engine with the turbocharger. It delivered 157 kWh (210hp).
The Plymouth Laser base model was delivered with a 1.8L four-cylinder engine, which produced 69 kWh (92hp). The RS model had an improved DOHC 2.0L engine, which made an impressive 145 kWh (195hp). Initially, the only drivetrain was the FWD, while in 1992. The laser received an AWD option.
The Eagle Talon was introduced as a FWD model which used the same 1.8L engine as the Eclipse. The ES trim included a 2.0L engine, which delivered 101 kWh (135hp). Improved models offered a TSi option with an AWD drive train and turbocharged engine with 142 kWh (190hp).
Popular DSM Car Mods To Boost Performance
Today, DSM cars are often used in different types of races, from drag races and open track days to rally racing. These cars can handle a lot of tuning, both on the engine and the suspension. Several car enthusiasts offer DSM tune kits, but people from Boostin Performance and STM Tuned are well-known professionals.
Common Problems and Solutions in DSM Cars
One of the rare problems that DSM cars had was a lockup of the transfer case. The cause for it was a lack of lubrication. It was determined that the leak was not in the transfer case but in the brass plug in the center of the transfer case yoke.
Another noted issue was a thrust-bearing failure, which pointed to an engine failure. When this happens, the clutch pedal will stick to the floor after turning left. This problem was in the 1995-1997 Mitsubishi Eclipse, which was resolved in 1998.
Car Clubs and Communities for DSM Enthusiasts
The DSM cars have a cult following, both in the US and in Canada. The most recognizable car clubs are the DSM tuner community, Rollin Relics DSM Car Club, and Club DSM Canada. There, everyone can check for any races and competitions that are organized in the future. These clubs also have forums where owners can discuss topics about maintenance, tuning, and the history of DSM cars.
Factors in Buying Your First DSM Cars
DSM cars are not that young anymore; if you are looking for classic DSM cars, they can be 30 years old. You cannot expect to get a perfect car that works great in every way. When buying a DSM car, you should approach it like when buying any used car.
- Check for service history. If the owner(s) kept the service documentation, that is a plus. Then, you can know which parts are replaced and when. Nonetheless, you should check all the major systems of the car.
- Check the state of the bodywork. If there are signs of rust, the car was kept outside and exposed to rain. That doesn’t mean the rest of the car is bad, but it is an indicator to check it thoroughly.
- Take the car for a test drive. Check how the engine and the transmission are working. You should not hear strange noises from the gearbox and the engine.
If the bodywork, the engine, and the transmission are in decent shape, then you found a DSM car that is good for the taking. Even if you have to invest some money, that is expected when the car is 25+ years old. The things that you don’t need are large investments in the major car components that can take a lot of money from your pockets.
Check Out the So You Want a DSM:
Tips for Prolonged DSM Car Lifespan
Like with any other car, the best way to keep your DSM car running is by regularly inspecting and maintaining it. First, if you do not have it, get a service manual. There are listed all regular service intervals that you should follow.
Some of the recommended operations include:
- Check the timing belt every 60,000 miles and replace it if needed. When replacing the timing belt and its components, it is recommended to use OEM, not aftermarket products.
- Inspect and change the water pump after 120,000 miles. Like with the timing belt, buy an OEM pump and gaskets.
- Check for coolant leaks. If there are any, the common culprit is the valve cover gasket.
- Visually inspect the spark plugs and change them after 30,000 miles if needed.
- From time to time, do a boost leak test, and if there are problems with gaskets or seals, replace them.
DSM Cars in Racing and Other Competitive Events
Today, DSM cars are commonly used for drag racing and open track racing. The enthusiasts for both DSM cars and other tuned cars organize these.
Future of DSM Car
The DSM as a brand is long gone, and all that is left today are DSM aficionados. They are mostly used for tuning and amateur racing. You will rarely see somebody buying specifically a DSM car to use for commuting. But, they brought something new and different that the American market didn’t have – small, powerful, and fun cars to drive.
FAQs
Is Eagle Talon the same as Mitsubishi?
The Eagle Talon is engineered by the Mitsubishi and built in the US by the DSM. It is not a Mitsubishi, but Mitsubishi has a part in its creation.
Is the Eagle Talon a DSM?
Yes, an Eagle Talon is a DSM. All Talons made between 1990 and 1998 are considered to be a DSM.
What is a 1g DSM?
A 1G DSM is a first generation of DSM cars. It was made between 1990 and 1994. The most popular models were Eclipse, Talon, and Laser.
Final Considerations
DSM cars brought the idea of a small and powerful car to the American market. That concept was new for the Americans, but soon they caught on to it. The DSM cars are regarded as reliable cars, which, in upgraded versions, bring a lot of power.
Today, they are still popular, and several DSM car clubs are still active. Tuners recognized their potential and offered different tuning packages. They are mostly used for racing, thanks to their superior handling and power. They will always be remembered among car brands as cars that brought something new, different, and good.