I looked at a 1976 boat today powered by a Volvo Penta 6cyl diesel. I was kind of expecting a Nissan SD33 but found another engine instead. It has two valve covers. The injection pump drives the raw water pump and it was normally asperated. The VP outdrive had the number 270 pn it. The engine was much larger than a SD33, probably near the size of a 5.9 Cummins. I should have written down the numbers cast into the head but it was getting dark. Does thgis help anyone ID the engine type?
TIA,
John
TIA,
John