NRHS Sportster 883-1212 Engine Conversion

NRHS Sportster 883-1212 Engine Conversion Dyno90 Horsepower and 85 Ft-Lbs of Torque. Sweet!

On this Dyno readout from Rosa’s Cycle the starting horsepower was 75. That’s after I did the conversion. Starting out, the stock Sportster 883 had something like 53HP, 49 ft-lbs of torque.

The readout shows I need to do a little work in the lower RPM range. Hopefully the exhaust I designed will take care of that. If I can get this puppy up to 100hp that would be almost a 50% increase in horsepower. Not to shabby for a 74 Cubic Inches.

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