ENGINE = engine code
HP = factory horsepower rating
SIZE = engine size in c.c. cubic centimeters
BOR = standard engine bore in inches
STRK = engine stroke in inches
ROD = engine rod length center to center in inches
C-H = compression height of piston in inches
PIN = wrist pin outside diameter in millimeters
H-D = cylinder head volume in c.c. cubic centimeters
BEW = connecting rod big end width in inches
BEB = connecting rod big end housing bore diameter
D = double overhead cam
S = single overhead cam
N = non v-tec
V = v-tec 1 millimeter = .03937 inches
DECK= deck height in inches
R/S= rod to stroke ratio
VA= valve angles in degrees
VS= valve sizes intake/exhaust diameter in millimeters
ENGINE HP SIZE DECK BORE STRK ROD C-H PIN H-D BEW BEB R/S VA VS D-S V-N MODEL
B18C1 170 1797 8.347 3.189 3.433 5.429 1.181 21 41.6 .858 48 1.58 26 33/28 D-V 94-97 GSR
B18C5 195 8.347 3.189 3.433 5.429 1.195 21 42.7 .858 48 1.58 27 33/28 97-98 TYPE-R
B18A1 130 1834 8.347 3.189 3.504 5.394 1.181 21 48 .935 48 1.54 25 31/28 D-N 90-93 INTEGRA
B18B1 140 AS ABOVE 94-97
B17A1 160 1678 7.998 3.189 3.205 5.208 1.181 21 42.7 .935 48 1.62 27 33/28 D-V 92-93 INTEGRA
B16A3 160 1595 7.998 3.189 3.047 5.290 1.181 21 42.7 .935 48 1.74 27 33/28 D-V 93-97 DEL-SOL
B16A1-A2 AS ABOVE J.D.M
H22A1 190 2200 8.655 3.425 3.571 5.630 1.222 22 53.8 .935 51 1.58 29 35/30 D-V 92-97 PRELUDE
H23A1 160 2300 8.655 3.425 3.740 5.571 1.203 22 50 .935 51 1.49 25 34/29 D-N 92-96 PRELUDE
H23A4 195 AS ABOVE 97-98
D16Y8 127 1590 8.347 2.953 3.543 5.394 1.154 19 32.8 .892 48 1.52 30/26 S-V 96-99 CIVIC
D16Y7 106 1590 8.347 2.953 3.543 5.394 1.181 19 34.6 .892 48 1.52 30/26 S-N 96-99 VARIOUS
D16Z6 125 AS ABOVE 30/26 S-V 92-95 CIVIC
B20B4 1973 8.347 3.307 3.504 5.394 1.181 21 45 .935 48 1.54 25 31/28 S-N 97-UP CRV
D16A6 8.347 2.953 3.543 5.394 1.161 38
This list shows how the engine families relate. As you can see, many of the engine models share a number of common
components and dimensions. This allows a number of different combinations to be assembled using factory parts.
Some common swaps are:
H22 twin cam v-tech head on H23 block
B16-17-18 twin cam v-tech head on B18 LS block
B16-17-18 Head on a B20B4 CRV block.
Care should be exercised when mocking up engines. Be aware when swapping parts that piston dome and
valve pocket locations, can cause problems. Other possible problems can occur with cylinder head,
valve angle and valve head diameter changes.
Some things to check are.
- Piston to cylinder head clearance. Because they often need more cylinder bore clearance,
forged pistons tend to “rock” more at T-D-C than cast pistons. This decreases as engine temperature rises. - Piston to valve clearance, both depth AND diameter. Just because it looks the same doesn’t mean it fits the same.
- Oil and coolant passage alignment. Some swaps require external cylinder head oiling. Proper coolant flow can be a concern.
- Cylinder head gasket availability. Copper head gaskets don’t seal very well and coolant leaks are common. MLS is a better choice.
- Performance piston and connecting rod availability. Having to wait for custom parts stinks and costs more money.
- Future camshaft timing changes. Adjusting the cam sprockets can diminish valve to piston clearance.
- Future camshaft replacement. You know a bigger cam is in the future.