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Honda R18Z1 specs: 1.8L (110 ci) 4-cylinder. Rated 110-143 hp, 2012–2015. Used in the Honda Civic. Rod ratio and piston speed worked out.
Each of the 4 cylinders displaces 27.5 ci (451 cc).
It is one of 3 engines in the Honda 110ci family, all of them 110 ci — the differences between them are in compression, heads and rating, not displacement. 8 factory variants share these dimensions, rated from 110 to 143 hp across 2012–2015.
| Displacement | 110 ci / 1.8 L |
|---|---|
| Cylinders | 4 |
| Configuration | I4 |
| Fuel type | gas |
|---|---|
| Advertised HP | 110–143 hp |
| Years | 2012–2015 |
| Displacement per cylinder | 27.5 ci |
|---|
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2012 | 110 hp | R18Z1 |
| 2012 | 140 hp | R18Z1 |
| 2013 | 110 hp | R18Z1 |
| 2013 | 140 hp | R18Z1 |
| 2014 | 110 hp | R18Z1 |
| 2014 | 143 hp | R18Z1 |
| 2015 | 110 hp | R18Z1 |
| 2015 | 143 hp | R18Z1 |