4P 2.4L D2 Midget Engine - LONGBLOCK ONLY R40 3mm Intake Valve that is

3mm Intake Valve that is lighter than the competition's smaller valves

and a 4P B-Series TURBO Race Engine on back

Easily install on the ground or on a lift

More horsepower

4P 2.4L D2 Midget Engine - LONGBLOCK ONLY R40 3mm Intake Valve that isDescription The 4 Piston Racing USAC D2 Midget Race Engine was specifically developed for D2 competition. This is a replacement long block only. Please see our turn key package if you are looking for a ready to run engine that is tuned and ready to race. New OEM Engine Block Core 4P Assembled Long Block to USAC D2 Spec 4P Prepared Cylinder Head Engine Only Add your accessories 2025 USAC D2 Midwest Thunder Midgets Champion Tyler Nelson D2 Engines are