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International Automotive Technicians Network
Re: rebuilt engine break-in (vintage)
Posted to Technical Discussion Forum on 11/16/2016

Were the cylinders bored, or just honed/cleaned?

Bored cylinders don't really need a lot of break-in, just go for a city/freeway drive. Basically, just give it an OBDII test drive.

If it was just re-ringed, that's another story entirely. Under acceleration... Login to read more.