The 1989-1993 generation Honda Integra bears the code E-DA. This is the most important generation of models in Honda's history as this is where the legendary VTEC system was introduced. The very first VTEC engine was the 160ps version of the DOHC VTEC B16A and the very first model to use this engine was the DA6 Honda Integra RSi/XSi, first introduced by Honda in April 1989. Thus as the official JDM Honda factory manual for the DA6 states, the first VTEC engine in the world is a B16A bearing the serial number 1000001 and was used in an Integra RSi or XSi which beared the chasis serial 1000001 !

There were two main variants of the top DOHC VTEC model, the RSi and the XSi. The RSi was the base model without any options, while XSi was the full options variant with climate control and optionally sunroof and ALBS. This top ranked DOHC VTEC model was complemented by more docile models that uses dual-carb'ed or PGM-Fi versions of the versatile ZC engine but in the more compact SOHC configuration. Similarly there were base and full options variants of these SOHC engine Integras coded RX/RXi and ZX/ZXi respectively.

In 1991, the range received minor cosmetic changes. More significantly the B16A engine was enhanced to current generation specs; 10.4 CR, wilder cam-profiles; producing 170ps. The 1991 revision also saw the introduction of the first 1.8l engined Integra. The DOHC (non-VTEC) B18B was first used on the 1991-1993 Integra ESi where it produced 140ps.

An interesting fact about the 1991 revision of the DA-Integra is that it is relatively unknown ! Most publications, even japanese, focus on the original 1989-1991 line-up as it is more famous and popular. The specifications and model line-up for the 1991 revision are obtained from the japanese Hyper-Rev magazine. The RX/RXi models were listed as being deleted from the line-up and the 1.8l ESi model added. While I cannot confirm the correctness of this infor, I can confirm that the 1.8l ESi do in fact exist since I've checked a real example up-close. What I do have some reservations though is the gear-ratio data for the 170ps B16A which are identical to those of the EG and current EK-series Civics.

The specification data here are from two different sources. The 1989-1991 line-up data were obtained from the official Honda JDM catalog for the Honda Integra which will therefore be absolutely authoritative. The specs for the 1991 revision as noted are sourced from the japanese Hyper-Rev magazine which is a non-Honda source so I cannot confirm their absolute accuracy.




Model Line-up 1989 to 1991
Source : Official JDM Honda Integra Catalog 1989-1991

3-door Coupe 4-door sedan
Model Integra RXi/ZXi Integra RSi/XSi Integra RX/ZX/
ZX-extra Integra RXi/ZXi Integra XSi
Code DA5 DA6 DA7 DA8
Engine ZC PGM-Fi B16A ZC carb ZC PGM-Fi B16A
Length(mm) 4390 4480
Width(mm) 1695
Height(mm) 1325 1340
Wheelbase(mm) 2550 2600
Clearance(mm) 150
Weight(kg) 1040-1110 1060-1170 1030-1100 1060-1130 1120-1190
Tyre Size 185/65R14
85H 195/60R14
85H 185/70R13
85S 155/65R14
85H 195/60R14
85H



Engine Line-up 1989 to 1991


Engine ZC carb ZC PGM-Fi B16A
Capacity(cc) 1590 1595
Bore X Stroke(mm) 75.0 X 90.0 81.0 X 77.4
CR 9.1 10.2
Specification 16V SOHC dual Keihin carbs 16V SOHC PGM-Fi 16V DOHC VTEC PGM-Fi
Max Power(ps/rpm)
manual/(auto) 105/6300 120/6300 160/7600
(150/7100)
Max Torque(kgm/rpm)
manual/(auto) 13.8/4500 14.5/5500 15.5/7000
(15.3/6000)
1st Gear MT/AT 3.250/2.705 3.250/2.647
2nd Gear MT/AT 1.894/1.560 2.052/1.566
3rd Gear MT/AT 1.259/1.027 1.416/1.111
4th Gear MT/AT 0.937/0.780 1.103/0.810
5th Gear MT/AT 0.771/- 0.906/-
Reverse Gear MT/AT 3.153/1.954 3.000/1.904
Final Drive MT/AT 4.250/3.933 4.437/3.933 4.400/4.428




Model Line-up 1991 to 1993
Source : Hyper-Rev Vol27 'Integra'
Note that this is not an official Honda source so the data here will not be authoritative

3-door Coupe 4-door sedan
Model Integra ZX Integra ZXi Integra RSi/XSi Integra ZX-extra Integra ZXi Integra ESi Integra XSi
Code DA5 DA6 DA7 DB1 DA8
Engine ZC carb ZC PGM-Fi B16A ZC carb ZC PGM-Fi B18B B16A
Length(mm) 4390 4480
Width(mm) 1695
Height(mm) 1325 1340
Wheelbase(mm) 2550 2600
Clearance(mm) 150
Weight(kg) 1030-1050 1060-1080 1060-1130 1030-1050 1070-1090 1130 1130-1150
Tyre Size 185/70R13
85S 185/65R14
85H 195/60R14
85H 185/70R13
85S 185/65R14
85H 195/60R14
85H



Engine Line-up 1989 to 1991
Note : Same caution applies as for Model Line-up


Engine ZC carb ZC PGM-Fi B18B B16A
Capacity(cc) 1590 1834 1595
Bore X Stroke(mm) 75.0 X 90.0 81.0 X 89.0 81.0 X 77.4
CR 9.1 9.2 10.4
Specification 16V SOHC dual Keihin carbs 16V SOHC PGM-Fi 16V DOHC PGM-Fi 16V DOHC VTEC PGM-Fi
Max Power(ps/rpm)
manual/(auto) 105/6300 120/6300 140/6300 170/7800
(155/7300)
Max Torque(kgm/rpm)
manual/(auto) 13.8/4500 14.5/5500 17.4/5000 16.0/7300
(15.6/6500)
1st Gear MT/AT 3.250/2.722 -/2.647 3.230/2.647
2nd Gear MT/AT 1.894/1.555 -/1.483 2.105/1.566
3rd Gear MT/AT 1.259/1.027 -/0.974 1.458/1.111
4th Gear MT/AT 0.937/0.780 -/0.725 1.107/0.810
5th Gear MT/AT 0.771/- -/- 0.848/-
Reverse Gear MT/AT 3.153/1.954 -/1.904 3.000/1.904
Final Drive MT/AT 4.250/3.937 4.437/3.937 -/4.428 4.400/4.428