The Honda R engine is an inline-four engine launched in 2006 for the Honda
Civic. It is fuel injected, has an aluminum-alloy cylinder block and
cylinder head, is a SOHC 16-valve design and utilizes Honda's i-VTEC system. The
R series engine has a compression ratio of 10.5:1, features a "drive by wire"
throttle system which is computer controlled to reduce pumping losses and
create a smooth torque curve. The engine uses many advanced
technologies to improve fuel economy and reduce friction. Piston rings are given
an ion plating and weight is reduced with plastic and aluminum parts and
variable length intake manifolds that maintain ram air at a wide RPM range.
The engine also features piston cooling jets, previously available only on high
performance engines, and in the ninth generation 1.8L Civic the pistons are
treated with molybdenum disulfide applied in a polka-dot pattern. The
automatic transmission model is rated at California Air Resources Board ULEV-2
with fuel economy 25 mpg-US city, and 36 mpg-US highway. It also uses the same
computer controlled distributorless coil-on-plug ignition as the Honda
K-series engines. R16
= R16A = Found in:
2006+ Honda Civic Displacement: 1,595 cc
Compression: 10.5:1 Bore & stroke: 81.0 mm × 77.4 mm
Power: 125 PS @ 6,200 rpm Torque: 15.6 kgf·m) @ 4,200 rpm
Redline: 6500 rpm R18
= R18A1 = Found in:
2006+ Honda Civic Displacement: 1,799 cc
Compression: 10.5:1 Bore & stroke: 81.0 mm × 87.3 mm
Power: 140 PS @ 6300 rpm Torque: 17.7 kgf·m) @ 4,300 rpm
VTEC window: 1,500 - 3,500 rpm cruising/economy happens during VTEC
under cruising load only. Fuel Cut Off: 7150 rpm
= R18A2 = Found in:
2012-2014 Honda Civic Displacement: 1,799 cc
Compression: 10.5:1 Bore & stroke: 81.0 mm × 87.3 mm
Power: 140 PS @ 6,300 rpm Torque: 17.7 kgf·m) @ 4,300 rpm
VTEC window: 1,500 - 3,500 rpm cruising/economy happens during VTEC
under cruising load only. Redline: 7150 rpm
= R18Z1 = Found in:
2012- Honda Civic Displacement: 1,799 cc
Compression: 10.6:1 Bore & stroke: 81.0 mm × 87.3 mm
Power: 141 PS @ 6,500 rpm Torque: 17.7 kgf·m) @ 4,300 rpm
R20 = R20A1 =
Found in: 2007- Honda CR-V
2008- Honda Stream 2013- Acura ILX
Displacement: 1,997 cc Compression: 10.5:1
Bore & stroke: 81.0 mm × 96.9 mm Power: 150 PS @ 6,200 rpm
Torque: 19.4 kgf·m) @ 4,197 rpm = R20A2 =
Found in: 2007- Honda CR-V
Displacement: 1,997 cc Compression: 10.5:1
Bore & stroke: 81.0 mm × 96.9 mm Power: 150 PS @ 6,200 rpm
Torque: 19.4 kgf·m) @ 4,200 rpm = R20A3 =
Found in: 2008- Honda Accord
Displacement: 1,997 cc Compression: 10.5:1
Bore & stroke: 81.0 mm × 96.9 mm Power: 156 PS @ 6,300 rpm
Torque: 19.3 kgf·m) @ 4,300 rpm Top speed: 215km/h
= R20Z1 = Found in:
2012- Honda Civic Displacement: 1,997 cc
Compression: 10.6:1 Bore & stroke: 81.0 mm × 96.9 mm
Power: 155 PS @ 6,500 rpm Torque: 19.4 kgf·m) @ 4,300 rpm
See also Honda Engines
References External links
Honda Worldwide, Honda Develops New 1.8l i-VTEC Engine
Honda Worldwide, New 1.8l i-VTEC Engine