|
| |
Compression Ratio for Stock Engines
|
Engine-Piston |
B16A-PR3 |
B16A-P30 (JDM) |
B17A1-P61 |
B18C1 P72-A0 (US) |
B18C1 P72-00 (JDM) |
B18C5-P73-A0 (US) |
B18C5-P73-00 (JDM) |
B16B-PCT (JDM) |
B18B |
|
Compression Ratio |
10.2 |
10.4 |
9.7 |
10.0 |
10.6 |
10.6 |
11.1 |
10.8 |
NA |
Approximate Compression
Ratio for Engine-Piston Mixes
|
Engine |
Piston |
| |
B16B or Civic Type-R |
P73 (US) Integra Type-R |
P73 (Japan Spec) Integra
Type-R |
|
B16A |
11.1 |
10.4 |
10.7 |
|
B17A |
11.4 |
10.6 |
10.8 |
|
B18C w/GSR Head |
11.8 |
10.9 |
11.4 |
|
B18C w/Type-R or B16 Head |
11.6 |
10.6 |
11.1 |
Approximate Piston Measurements
|
Engine-Piston |
B16A-PR3 |
B16B-PCTX |
B17-P61 |
B18B-PR4 |
B18C-P72 |
B18C5-P73 |
B20B |
H22A1 |
|
Rod Length |
5.290 |
NA |
5.208 |
5.394 |
5.429 |
5.429 |
NA |
5.63 |
|
Stroke |
3.031 |
NA |
3.205 |
3.504 |
3.433 |
3.433 |
NA |
3.571 |
|
Bore Size |
3.189 (81mm) |
3.189 (81mm) |
3.189 (81mm) |
3.189 (81mm) |
3.189 (81mm) |
3.189 (81mm) |
3.307 (84mm) |
3.425 |
|
Head C.C. |
42.7 |
42.7 |
42.7 |
45 |
41.6 |
42.7 |
|
53.8 |
|
Compression Height |
1.180" |
1.210" |
NA |
1.180" |
1.183" |
1.190" |
1.165" |
NA |
|
Dome Height |
.098" |
.253" |
NA |
-.055" |
.000" |
.070" |
-.035" |
NA |
|
Weight |
299g |
327g |
NA |
280g |
305g |
310g |
312g |
NA |
| |
|
