I have P180 UG3 model. Around 20K kms my bike started drinking oil in the range of 75ml/1k km. Slowly the consumption increased to 200ml/1k km but no smoke whats so ever. The engine vibrates bad due to the piston gap. Finally I decided to replace the block. Unfortunately I could not find UG3 block in SVC. I have no option to rebore. I have lots of doubts on reboring. Finally reboring has done on a cnc machine replaced with .25 oversize Mahle piston. Head word is also done with new valves. Total cost involved is Rs 1800 incl labour. I am very happy with the engine, very smooth. Planing to do run-in atleast 1500 kms. Mahle is much superior than Sam piston in my opinion. I will come to know whether its successful or not only after 5k kms.
How long do we need to run-in a rebored block?






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