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Top model of the 4th generation Honda Civic was the JDM
(Japanese domestic market) SiR (EF9). It is equipped
with the 1.6L DOHC VTEC engine (B16A) that delivers
160hp @ 7600rpm. The VTEC system is tuned for optimal
performance unlike some later VTEC engines like the 5th
gen. EDM (European domestic market) VEi, SOHC VTEC,
tuned for fuel-efficiency and the VTEC-E(conomy) models
(VX). The B16A was a very technical advanced engine for
its days and still is today. It is a short stroke 4
in-line that delivers its max. hp at 7600rpm and the
redline is at a astonishing 8000 rpm. Later generations
B16A's can be found in the later generations Civics' and
in the Del Sol (CRX for Europe). Compared to the other
4th generation Civics' the SiR has a completely
different front-end. It has different headlights, a
different bumper and the hood is bigger to accommodate
the larger B-series engine. The different front end
however is not exclusively for the VTEC models, the
special models of the JDM 23L and 25X and the late
models of the JDM hatchbacks have a similar front-end. |
More visual differences between the ‘normal’ models and
the VTEC models: The roof spoiler is bigger (SiR only),
the VT and SiR have 'side skirts', rear bumper lip, the
center plate between the tail-lights is red and says
CIVIC VTEC and the SiR has a different gauge cluster
(see picture below).
Europe's equivalent of the SiR was called 1.6i VT (EE9).
Although it was also equipped with a B16A engine (B16A1)
and the same SiR front-end there are many (small)
differences. For one the EDM version ‘only’ has 150hp (SiR
160). The exact reason for this is not very clear, the
head is the same but the VT does not have a knock
sensor. A theory is that the EDM VT has a different
ignition timing and is detuned because of Octane ratings
(JDM 98RON, EDM 95RON).
The VT has slightly different gear ratio's, also the SiR
has the speedometer in the center of the gauge cluster,
the VT has a standard layout. The biggest difference off
course is that the SiR is right-hand drive and the VT
left-hand drive (except for the UK and Irish VT models).
Both the SiR and VT have rear disk brakes and larger
ventilated disks in front. The suspension also improved
and is (compared to the other 4th gens) different in
many ways.
The B16A engine was also available in the JDM CRX (EF8)
and EDM CRX (EE8). Again the CRX 1.6i VT and SiR have a
different front-end and different suspension (among
other things). Again the VT has 150hp and the SiR 160hp.
Compared to the EDM 1.6i-16 (1.6L DOHC) the VT adds more
standard equipment, such as full leather seats, power
windows, power mirrors, low fuel indicator light etc.
For some reason there has never been a USDM (United
States domestic market) 4th gen Civic/CRX VTEC. The Si
(1.6L SOHC) was the US top model. But off course there
are a lot of hybrid 4th gens with the 1.6L DOHC VTEC and
non-VTEC engines. |
|
SPECS
(see the
specs section for more
specifications) |
| |
CIVIC
SiR |
CIVIC
VT |
CRX
SiR |
CRX
VT |
|
|
Engine |
1.6
DOHC VTEC 16V |
1.6
DOHC VTEC 16V |
1.6
DOHC VTEC 16V |
1.6
DOHC VTEC 16V |
|
Engine code |
B16A |
B16A1 |
B16A |
B16A1 |
|
Chassis
code |
EF9 |
EE9 |
EF8 |
EE8 |
|
Displacement
cc |
1595 |
1595 |
1595 |
1595 |
|
Bore x Stroke mm/inch |
81.0
x 77.4
3.19 x 3.05 |
81.0
x 77.4
3.19 x 3.05 |
81.0
x 77.4
3.19 x 3.05 |
81.0
x 77.4
3.19 x 3.05 |
|
Compression
ratio |
10.2:1 |
10.2:1 |
10.2:1 |
10.2:1 |
|
Power
hp/rpm |
158
@ 7600 |
150
@ 7600 |
158
@ 7600 |
150
@ 7600 |
|
Torque
nm/rpm | lbs/ft |
152
@ 7000 | 112 |
144
@ 7100 | 106 |
152
@ 7000 | 112 |
144
@ 7100 | 106 |
|
Top Speed kmh/mph |
180
/ 112.5 * |
208
/ 129 |
180
/ 112.5 * |
222
/ 139 |
|
0-100kmh(62mph) |
7,3s |
7,3s |
7,2s |
7,2s |
Gear Ratio's
1
2
3
4
5
R
FDR |
Y1
3.166
2.052
1.416
1.103
0.870
3.000
4.266 |
Y2
3.250
2.052
1.416
1.103
0.870
3.000
4.133 |
Y1
3.166
2.052
1.416
1.103
0.870
3.000
4.266 |
Y2
3.250
2.052
1.416
1.103
0.870
3.000
4.133 |
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