The MD700 range of engines were updated and power levels were increased along with different coolers and heat exchangers.  What started out as a 4.2 litre 220 horse power indirect injection engine, now had direct injection and up to 345 horse power. Many internal components were modified to handle the extra power.  A true high performance light-weight diesel engine was now available.  Modifications to the cylinder heads were made which offered more resistance to cracking and the MD700 range was truly a superbly reliable high speed marine engine.

Cummins Mercruiser Diesel Marine Engine

Cummin Mercruiser Diesel Engine