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Well, Gerry, it doesn't sound as if you're sure if this engine is brand new. If your engine is brand new and the rings have seated properly then you shouldn't experience this problem. The engine needs to run through a break-in. An hour of various throttle openings and loads would seat the new rings. No heavy loads or high throttle settings until the engine has had at least two runs up to operating temperature and cooled down. Could be that the cylinder hone job wasn't done correctly if you're still getting "blow-by." If the engine just has a new head then various problems could exist: A bad mate between the new head and the old block. Head bolts aren't torqued correctly. New head is warped. Valve seals were damaged when installed. Check for oil in the coolant. Check for coolant in the oil. It could be that one or more of the oil control rings was damaged when the engine was rebuilt. Also consider that 50 years ago tolerances and mating surface weren't measured in the ten-thousandth inch as they are today. Even brand new engines in the 50's smoked a little under load. Hope some of this helps. Tim
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