Scoping Out the Sport Compact Market - Engine Builder Magazine

Scoping Out the Sport Compact Market

At first it was known as the Import Tuner Market which later morphed into what is currently known as Sport Compact. However, the market could be changing again and may soon be called something else.

Last year, the Specialty Equipment Market Association (SEMA) changed the name of its Sport Compact Council to Street Performance Council (SPC) to better reflect the market and serve its members in what it says is an “extremely diverse street-performance industry.” Are the signs pointing to the end of sport compact? It’s hard to say, but sport compact tuners probably won’t be as mainstream as they have been; many of today’s youth have moved into other things besides cars, including computers and video games.

A recent survey showed that the people involved in this market are no longer teenagers or even early-twenty somethings: many have grown up and matured with the market. Research by SEMA indicates that the average age for those in the sport compact market is 27 years old. While the average age is still not that old to most of us, it’s a far cry from the teenagers who used to dominate the market in the beginning.

Experts concede the sport compact fad has faded a bit but there are still pockets of the country where it is strong. Mostly the warmer, coastal areas of the country continue to have a good following of sport compact enthusiasts.

Engine builders who wish to be part of this maturing market will need to immerse themselves in the scene to appeal to this group of potential customers. This is not a market in which you can wait for them to come to you and hope to get business. You will have to go out and pursue this niche on the street and track. There are national car shows and drag races dedicated to this market as well as local events and places where these customers hang out, and the more you put yourself in front of them the better chance you will have of landing their business.


The Engines and Platforms

The following is a list of base engines and platforms used for modifying or, for some tuners, swapping. Honda has some of the most-built and swapped engines in the sport compact market. Honda is considered by many as the small block Chevy of this market but the early VTECs (B18) are getting harder to find decent cores for and are therefore more expensive to build these days.

The B16A Honda engine debuted back in 1989 in the Japanese Domestic Market (JDM) CRX. It was then released in Europe in the Civic in 1992. The B16A3 first saw production in the U.S. in 1993 in the del Sol platform. The B16A2 was last used by Honda in the U.S. in the ’99-’00 Civic Si as well as Canada in the Civic SiR. The JDM B16A was also discontinued in 2000. The B18C Honda engine was released in the JDM Integra SiR in 1995 and continued in the JDM Integra Type-R through 2000. The B18C1 appeared in the U.S. Acura Integra GSR in 1994 and was used until 2000. The B18C5, which had higher compression, larger cams, etc, was released in the JDM Integra Type-R in 1994 and used until 2000. The B17A1 was only available domestically in the 1992-’93 Acura Integra GSR.

The B-series Honda DOHC engines are the most popular and well known of the Honda engines. The B18A, B18B and B20B platform is non-VTEC camshaft design. Introduced in Japan in 1986 in the Honda Accord, the B18A appeared in the U.S. in 1990 as the B18A1, found in the Acura Integra RS/LS/GS, and remained until 1994 when Honda/Acura released the B18B1 for the ’94-’95 Acura Integra RS/LS (the Acura badge is only used in North America). The Honda B20B found in the CRV uses the same cylinder head and camshaft package but has the larger 84mm bore size to increase overall displacement.

The H engine was Honda’s high-performance “big block” engine family from the 1990s and early 2000s. It is largely derived from the Honda F engine and shares many design features. It was replaced by the Honda K engine.

The primary vehicle platforms of the H engine series were the fourth- and fifth-generation Honda Preludes, and the fifth- and sixth-generation Honda Accords. It has also enjoyed some success as a racing engine, forming the basis of Honda’s Touring Car racing engines for many years, and being installed in lightweight cars (such as the Honda CRX) for use in drag racing.

The H22A debuted in 1993 for use in the Honda Prelude VTEC as the H22A1. Versions of the H22A would be the Prelude’s signature high-performance engine until the end of Prelude production in 2001. It was also used in the 1994-1997 Honda Accord SiR and 1998-2002 Honda Accord Euro-R in Japan.

The newest engine in the Honda tuning community, the “K Series,” is Honda’s production version of the roller rocker valve train assembly found in the S2000. Less friction, more rpm potential, faster action cam profiles – experts say this engine has great untapped potential. The engine was first seen in the Japanese Integra Type-R in 2001 and put out 220 hp at 8,000 rpm from the factory. The K20A also sees service in the JDM Civic Type-R, using the same compression and cam profiles.

The first U.S. production K series engine was the K20A2 found in the ’02-’04 RSX-S. Other engines featuring the same head configuration include the K24A2 (TSX) that features a 9.114? deck height, the K20Z1 in the ’05-’06 RSX-S that includes various JDM Type-R add-ons like cams, throttle bodies, higher compression and Honda’s answer to the tuning crowd, the K20Z3 found in the 2006-up Civic Si.

The only Honda engine designed to sit longitudinally for the rear wheel drive S2000 (named for its 1997cc displacement), this is Honda’s answer to four-cylinder high performance, high engine rpm (8,900 rpm factory redline). Similar to the K Series engine in terms of mechanical roller cam profiles and roller rocker followers, the S2000 engine is used in a variety of racing applications. The F20C engine is found in the ’00-’03 U.S. S2000 and the ’00-’05 JDM S2000 while the F22C is used to service the ’04-up U.S. car and has just replaced the F20C in the 2006 JDM S2000. Similar in terms of compression and cam specifications, the F22C features a longer stroke for added displacement and increased torque.

Nissan’s 3.5L (3498 cc) VQ35DE is used in many of its vehicles, but the most popular US vehicles for engine upgrades are the Nissan 350Z and the Infiniti G35. Unlike the inline six cylinders (RB26, 2JZ), the VQ35DE is a V6 configuration. It adds variable valve timing and has a stock bore of 95.5 mm and stroke of 81.4 mm. Output ranges from 240 hp to 301 hp and 246 lb.ft. to 287 lb.ft.

The VQ35DE is built in Japan and Tennessee. It was on the Ward’s 10 Best Engines list from 2002-2006, the only engine to be on Ward’s list every year since its inception. The VQ35DE has an aluminum engine block and aluminum DOHC cylinder heads. It uses SFI fuel injection, has 4 valves per cylinder with VVT and features Nissan’s nylon intake manifold technology. A modified version of the VQ35DE, called the S1, is produced by Nismo for the Fairlady Z S-Tune GT. It produces 285 hp at 7,200 rpm, a higher rev-limit than that of the original VQ35DE.

The Subaru WRX has become a popular choice for enthusiasts wherever it is sold for its high performance, great handling and relatively affordable price. Originally introduced in 1992 in Japan, then shortly afterwards in Australia,  Europe and later the U.S., the WRX had a turbocharged flat-4 2.0L engine producing 210-220 hp. From 1997, the restyled WRX offered 225 hp.

Low-volume versions with even greater power and grip were built by Subaru’s performance division, Subaru Tecnica International (STi). STi versions of the Impreza, which produced 280 hp from the factory, are often raced in various rally classes with great success. Introduced in 1994, the STi has proven to be a very popular high-performance machine in the Japanese domestic market. Introduced to the United States in 2004, the US model STi features the larger displacement 2.5L (EJ257) that features Active Valve Control System (AVCS).

One thing to keep in mind is that the intake camshafts are setup for non-AVCS operation. Subaru experts say, if running AVCS, you must completely remove the four set screws located in the front of each intake cam (dowel pin side) using a 2.5 mm allen wrench. This will allow oil to actuate the AVCS. These cams do not fit the 2008-up STi with dual AVCS.

The Mitsubishi Eclipse has been in production since 1989 and has been produced solely for the United States and Canadian market where it has also been built as the Eagle Talon and the Plymouth Laser through Mitsubishi’s close relationship with Chrysler known as Diamond Star Motors (DSM).

The first generation Mitsubishi Eclipse was available in both FWD and AWD models, but all came with the 4G63 engine; most with the turbocharged 4G63T. The first generation engine (6 bolt crank) was used from 1989-1992. The second generation engine (7 bolt crank) was introduced in 1993, but was used in the 1st Gen platform through 1994. The 7 bolt, 4G63 engine was used until 1999. Both the 1st Gen and 2nd Gen 4G63 engines use the same camshafts, however, do not confuse the 4G63 engine with the non-turbo, experts warn. The 420A Chrysler engine was used in the base FWD Eclipse from 1995 to 1999.

The Evolution IX features the venerable 4G63 2.0L but with the new MIVEC technology (Mitsubishi Innovative Valve-timing-and-lift Electronic Control) which features variable valve timing on the intake cam. The U.S. Evo IX was available in three different models that had subtle differences.

The 4B11T is the first engine in the Lancer Evolution series that uses a die-cast aluminum cylinder block versus the cast-iron block used in the previous turbocharged 4G63 engine that powered all previous models. The engine weight has been cut by 26 lbs. compared to the 4G63, even with the addition of a timing chain instead of a belt and MIVEC continuous variable valve timing on both the intake and exhaust camshafts (the 4G63 had MIVEC valve timing and lift switching on the intake only).

A revised turbocharger offers up to 20 percent quicker response at lower engine speeds compared to previous 4G63. The 4B11T offers a broader torque curve, producing more torque than the 4G63 at all engine speeds, helped by the engine’s square bore and stroke design (both measure 86 mm). Redline starts at 7,000 rpm, with a fuel cutout at 7,600 rpm to protect the engine. A semi-closed deck structure, an integrated ladder frame and four-bolt main bearing caps contribute to engine strength and durability.

Unlike the 4G63, the 4B11T does not use a balancer shaft. Aluminum is used for the timing chain case and cylinder head cover. The engine features an electronically controlled throttle, an isometric short port aluminum intake manifold and the stainless steel exhaust manifold is positioned at the rear of the engine. The use of a direct-acting valvetrain (buckets) eliminates the need of the roller rocker arm configuration previously used in the 4G63 and its valve stem seals are integrated with the spring seats.

Domestic manufacturers are also now players in the market with engines such as GM’s 2.4L Ecotec, Chrysler’s 2.4L Turbocharged SRT-4 and the 2.0L Ford ZETEC engine.

The sport compact market may not be every engine builder’s cup of tea but for some it has become part of the mix. If you already build performance engines then sport compact will not be that much of a stretch. Today, even domestic performance applications use power adders that the sport compact builders have turned to for years. What remains the same is your expertise in choosing the right components, and doing quality machine work.Eddie Procco, Central Florida Turbo (CFT) in Orlando, FL, says that Sport Compact drag racing has found salvation with the National Sport Compact Racing Association (NSCRA). Procco and CFT contest this 2003 Mitsubishi EVO that produces over 1,000 rwhp. His car, the Procco Evo, finished second in the NSCRA finals in December. Eddie Procco
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