The 230-horse, VTEC turbo-four is said to power the next Civic Si.

It has been said that Honda is primarily an engine manufacturer that just happens to make excellent cars on the side. In that case, the latest of their core products has just surfaced online.

Just days after a report about a performance-oriented Civic Si, the powerplant purported to power the hotted-up compact has appeared on CivicX.com, a forum dedicated to the tenth-generation of Honda's longest-running nameplate.

The photo appears to confirm that the 230-horsepower, turbocharged 2.0L inline-four is not just rumor. It seems more likely than ever that there will be a performance model to slot in between commuter specials and the eyeball-melting Civic Type-R, which will come to the US for the first time in its next iteration.

From the looks of it, the mill is a detuned version of the Type R's turbo four. That engine rated at 310 horsepower and powers the Type R prototype that currently holds the front-wheel-drive production car record at Nurburgring Circuit.

The engine appears to employ an aluminum intake with cooling fins, electric power steering, an integrated blow-off valve and an integrated oil cooler, possibly for the transmission. Sure to warm the hearts of enthusiasts, the motor is said to be on offer with a 6-speed manual only.

Honda has not made an official statement regarding the existence of an Si. If it does, we are likely at least a year away from the production version.