Engine Break-In Procedure - Honda K20C1 Operating Instructions Manual

Engine Break-In Procedure

After adding lubricants and coolant to proper specifications, follow the steps below to
properly break-in the engine. Following these procedures will ensure the proper
break-in of the engine, if these are not followed, the limited mileage engine warranty
will be void.
1. Bring engine to temperature (minimum 60°C coolant temperature)
2. On the first outing, keep RPM below 4000 RPM and throttle at 50%. Bring the
engine to stable temperature. Cover a distance of 20 miles. Vary load and engine
speed as much as possible and avoid steady states for prolonged periods. Do not
exceed 4000 RPM under engine load. Only exceed 4000 RPM for a momentary
period under no load conditions (downshifting).
3. Stop and inspect oil level and for leaks.
4. On the second outing, keep RPM below 6000 RPM and throttle at 75%. Bring the
engine to stable temperature. Cover a distance of 20 miles. Vary load and engine
speed as much as possible and avoid steady states for prolonged length of time.
5. Stop and inspect oil level and check for leaks.
6. Your engine is now ready for an outing at race pace. Although the engine is now
broken-in, it is advisable to monitor dash warning lights, including oil pressure, oil
temperature and water temperature indicators.
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Performance Development.