Is this an April fool ?
No of course a car does not have the odemeter reset , in any case it should be impossible to reset it. It would be a good idea to get the new engine recorded it the official service history though with the odemeter reading when it was fitted.
don't be rediculous, the only time it is permissable to set an odometer is when it is replaced. eg if it breaks showing 96786 then he new one should be set thus. Why would replacing an engine mean resetting? The odometer is for the whole car. The milage at the time of replacement should be noted on the bill for information but that's all.
Sorry if all you guys thought my question was a prank. But being only a driver and not an enthusiast which possibly you are- I don't see why it would not be a legitimate question. Again, sorry if it seemed stupid.