Engine Compression
COMPRESSION RATIO SPECIFICATIONS
| Application |
Ratio |
| B2200 (2.2L) |
8.6:1 |
| B2600i (2.6L) |
8.4:1 |
| Miata (1.6L) |
9.4:1 |
| MPV |
| 2.6L (4-Cyl.) |
8.4:1 |
| 3.0L (V6) |
8.5:1 |
| MX-6 & 626 (2.2L) |
| Non-Turbo |
8.6:1 |
| Turbo |
7.8:1 |
| Protege (1.8L) |
| DOHC |
9.0:1 |
| SOHC |
8.9:1 |
| RX7 (1.3L Rotary) |
| Non-Turbo |
9.7:1 |
| Turbo |
9.0:1 |
| 323 (1.6L) |
9.3:1 |
| 929 (3.0L V6) |
| DOHC |
8.9:1 |
| SOHC |
8.5:1 |
COMPRESSION PRESSURE SPECIFICATIONS
| Application |
Minimum psi (kg/cm2
) @ RPM |
Standard psi (kg/cm2
) @ RPM |
| B2200 (2.2L) |
121 (8.5) @ 300 |
173 (12.2) @ 300 |
| B2600i (2.6L) |
142 (10.0) @ 280 |
185 (13.0) @ 280 |
| Miata (1.6L) |
135 (9.5) @ 300 |
192 (13.5) @ 300 |
| MPV |
| 2.6L (4-Cyl.) |
142 (10.0) @ 280 |
185 (13.0) @ 280 |
| 3.0L (V6) |
121 (8.5) @ 300 |
164 (11.5) @ 300 |
| MX-6 (2.2L) |
| Non-Turbo |
114 (8.0) @ 270 |
162 (11.4) @ 270 |
| Turbo |
98 (6.9) @ 260 |
139 (9.8) @ 260 |
| Protege (1.8L) |
| SOHC |
121 (8.5) @ 300 |
173 (12.2) @ 300 |
| DOHC |
128 (9.0) @ 300 |
182 (12.8) @ 300 |
| RX7 (1.3L) |
43 (3.0) @ 250 |
85 (6.0) @ 250 |
| 323 (1.6L) |
135 (9.5) @ 300 |
192 (13.5) @ 300 |
| 626 (2.2L) |
| Non-Turbo |
114 (8.0) @ 270 |
162 (11.4) @ 270 |
| Turbo |
98 (6.9) @ 260 |
139 (9.8) @ 260 |
| 929 (3.0L V6) |
| SOHC |
114 (8.0) @ 300 |
164 (11.5) @ 300 |
| DOHC |
125 (8.8) @ 300 |
179 (12.6) @ 300 |