Is anyone at rec.crafts.metalworking reading this thread??
If not, I suggest we (at rec.boats) stop further crossposting there.

On Wed, 22 Aug 07, jtay wrote:
Neither being a two-stroke nor using diesel oil (nor indeed the
combination) requires a blower/turbo for such an engine to operate.

Running a Detroit 4-53 without a blower (and maybe all Detroit 2
strokes -shrug- I dunno) would indeed take a complete and major league
re-design. Not just a few bolt on changes for sure.

Rick