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About Honda Integra engine
The Honda Integra is a line of small, sport coupes made by Honda during the years 1985 to 2007 with Japanese engines.
First generation Integra engine from 1986 to 1989
This vehicle debuted in Japan in 1985 as the Honda Quint Integra; it came with a 1.6 L DOHC 16 valve 4 cylinder engine. The engine was the vehicle’s most publicized feature, as DOHC, multi valve engines were anything but commonplace in entry level models at the time.
The first generation Integra’s actually came with two different engines. Although they shared the same engine code (D16A1), there were a few differences. The engine differed in the years 1986 to 1987 and 1988 to 1989. The two engines are commonly called the “Brown top” and “Blacktop” due to the colour of their valve covers. The “brown top” came in 1986 and 1987 Integra’s while the “blacktop” came in 1988 and 1989 models. The improvements in the “blacktop” engine included lighter rods, domed pistons for slightly higher compression, and an electric advance distributor (the “brown top” came with a vacuum advance distributor). The overall gain in performance was about 5 hp (3.7 kW) for 118 hp (88.0 kW).
Second generation Integra engine from 1990 to 1993
Honda debuted the second generation Integra in 1989 as a 1990 model, now powered by a new 1.8 L engine (B18A1) making 130 hp (140 hp 1992-1993), giving the model a necessary boost in performance.
For 1992, added the GS-R trim level (DB2 chassis code), powered by a variant of the very successful VTEC engine, called the B17A1, the difference between the B16A and B17A1 is the deck height and compression ratio and its displacement, the B17A1 is a 1678 cc engine. It featured a VTEC system, as found in the then-new NSX, bumping output to 160 hp (119.3 kW) and a 8000 rpm redline.
The 92 to 93 Integra GS-R is the rarest Integra to date because of its B17A engine, low production numbers, and unavailability in the used car market. This model Integra holds its retail value extremely well because of its rarity, reliability, and performance.
Third generation Integra engine from 1993 to 2001
Honda was debuted the third generation model in 1993. Acura followed in 1994. It had an unusual four headlight front end design which was dubbed “bug eyes” by some enthusiasts. Standard power from the B18B engine increased to 142 hp (105.9 kW), and the GS-R received the B18C1 VTEC engine, equipped with a dual-stage intake manifold, ported exhaust manifold and a displacement increase (from the second generation Integra) from 1.7 litres to 1.8 litres, bringing power up to 170 hp (126.8 kW). The bug eye model was known in Japan as Integra Si and it powered by a B18C engine with a power of 180Hp which later became the type R power lump.
A Type R model was added for the 1995 model year in Japan and in 1997 in other markets, powered by a highly tuned, hand-finished variant of the Si/SiR engine. That same year the Integra GSR was sold as the SiR-G. The JDM B18C Spec-R (B18C5 for USDM) equipped Type-R produced 197 BHP. Although it had an impressive rev limit, the Type R was still hampered by some criticism; its maximum torque output of only 133.8 lb•ft at 7500 rpm meant that the engine would have to be revved high to achieve the best performance.
Type R Trim Level Integra engine from 1997 to 2001 excluding 1999
The Type R’s B18C5 engine was not merely a tuned version of the GS-R’s B18C1. The Type-R’s head is a re-worked PR-3 head, with better valves, camshafts, a retainer, stiffer valve springs and a red cover. A retuned engine computer also contributed to improved power output, which allowed the Type-R to accelerate from 0 to 60 mph (100 km/h) in 6.2 seconds (as opposed to the GS-R’s 7.0).
The Integra SJ (standing for “Sedan Joyful”) was a rebadged Civic Ferio, with modified headlamps and grille and slightly larger rear lights. It was made from 1996 to 2001, and used the 1493 cc D15B engine.
Fourth generation Integra engine from 2001 to 2007
The fourth generation Integra, produced from 2002 on, it had an entirely new engine, the K-series. The Integra came in two models, the RSX base model, and the RSX-S boasting the K20A2 engine from 2002 to 2004, while the 2005 and 2006 RSX-S came with a K20Z1.
The Honda K series engine is a 4 cylinder 4 stroke engine. The K series engines are equipped with DOHC valve trains and use roller rockers to reduce friction. The engines use a coil-on-plug, distributorless ignition system with a coil for each spark plug. This system forgoes the use of a conventional distributer based ignition timing system in favour of a computer controlled one that allows the ECU to control ignition timings based on various sensor inputs. The cylinders have cast iron sleeves similar to the B series engines, as opposed to the FRM cylinders found in the H-series.
Two versions of Honda’s i-VTEC system can be found on K series engines; variable timing control (VTC) can be found on the intake cam of both versions. The VTEC system on engines like the K20A3 only operate on the intake cam; at low RPM only one intake valve is fully opened, the other opening just slightly to create a swirl effect in the combustion chamber for improved fuel atomization. At high RPM, both intake valves open fully to improve engine breathing. In engines such as the K20A2 found in the Integra RSX Type-S, the VTEC system operates on both the intake and exhaust valves, allowing both to benefit from multiple cam profiles.
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