The tuned-up, noncatalyzed MV8 570 offers a wider rpm band to allow the engine to swing taller props, those with more pitch. Combined with optimized cam profiling, a sophisticated electronic control system and other fine-tuning, the result is increased speed potential while maintaining low-end torque, and enhanced fuel economy. Of course, since the 7.4-liter MV8 570 displaces less than the 8.7-liter engines it’s vying with for your dollars, the fuel economy claim is further supported if there’s any truth at all to the old saw about needing to fuel cubic inches.
That brings up the point about displacement as it pertains to durability, since another old saw holds that more iron is tougher in the long run. Ilmor’s retort? The naturally aspirated MV8 570 lacks turbo-induced stresses. Hand-built, all of the MV8 570’s internal parts are Ilmor-designed. These include a forged steel crankshaft, forged steel connecting rods and forged alloy pistons. The block is cast iron; the heads are aluminum, providing a balance between material strength and overall weight. The MV8 570 is also loaded with the latest in electronics, like fly-by-wire throttle and full digital engine controls.
Though it comes standard in brilliant Ilmor Red, custom colors are available for an upcharge. Ilmor also offers an appearance package called the MV8 570X featuring sport tube headers, billet aluminum pulleys, polished stainless components and carbon engine covers. This package looked great as installed aboard our test boat.
The warranty offered for the MV8 570 is one year, limited. When queried about service, I was told, “You call. We’re there.”
The MV8 570 is unique in that it is a recreational engine and a race engine. And it is the only production, small-block, gasoline, high-performance marine engine to meet the rigorous California Air Resources Board 3-Star, Environmental Protection Agency and EU Recreational Craft Directive (CE) certified emissions standards.