Post by T-Topless on Jul 4, 2012 6:34:30 GMT -6
Interesting test performed by Mercury Marine. Report is on the www.nrel.gov (National Renewable Energies Libarary) site:
All engines ran hotter, the 200hp 2-stroke blew a rod before it completed the test, the Verado 300hp burned up 3 exhaust valves, and the 4.3L sterndrive experienced 4.5% increased fuel consumption.
"Conclusions and Recommendations:
Several issues were discovered in this study from an exhaust emissions and an engine durability standpoint ..."
www.nrel.gov/docs/fy12osti/52909.pdf
High Ethanol Fuel Endurance:
A Study of the Effects of Running Gasoline with 15% Ethanol Concentration in Current Production Outboard Four-Stroke Engines and Conventional Two-Stroke Outboard Marine Engines
June 16, 2010 – June 30, 2011
David Hilbert
Mercury Marine Fond du Lac, Wisconsin
A Study of the Effects of Running Gasoline with 15% Ethanol Concentration in Current Production Outboard Four-Stroke Engines and Conventional Two-Stroke Outboard Marine Engines
June 16, 2010 – June 30, 2011
David Hilbert
Mercury Marine Fond du Lac, Wisconsin
All engines ran hotter, the 200hp 2-stroke blew a rod before it completed the test, the Verado 300hp burned up 3 exhaust valves, and the 4.3L sterndrive experienced 4.5% increased fuel consumption.
"Conclusions and Recommendations:
Several issues were discovered in this study from an exhaust emissions and an engine durability standpoint ..."
www.nrel.gov/docs/fy12osti/52909.pdf
Drop your top and go 
