What is the break-in method after an engine overhaul?
2 Answers
An engine after a major overhaul will have speed limits; try to keep it below 80 kilometers per hour and avoid letting the engine speed exceed 3,000 RPM. Specific details are as follows: 1. After an engine overhaul: If the repair meets the technical requirements, the engine performance can be restored to over 90% of its original state. Normally, the service life of an engine after a major overhaul will be shorter than the original engine, and its durability will also decrease. This is an undeniable fact. 2. Precautions: Do not accelerate abruptly right after the engine is repaired; accelerate slowly and avoid driving too fast initially. Pay attention to the normal water temperature and ensure there are no oil leaks. Start by idling for a period to break in the engine.
I just finished overhauling my old Bora, and the break-in period is quite particular! The mechanic at the repair shop said the first 500 kilometers are the most critical: don't rush to step on the gas after starting; wait until the coolant temperature reaches 90 degrees before moving. Keep the speed below 80 km/h and the RPM under 3000. When climbing hills, shift to a lower gear in advance to avoid straining the engine. I checked the dipstick every 200 kilometers and indeed found a lot of metal shavings initially. Over the weekend, I deliberately took a smooth highway drive to ensure even wear of the piston rings. Now, after completing 1000 kilometers, the engine sound is noticeably smoother.
