Oops!

I forgot the M117 was both iron and aluminum. Must not be getting enough sleep.

I thought the M116 was the 3.5L short stroke, all later engines were the M117, but I will take your word on it.

Either way, the 380 in early versions had the single row chain, not the best design ever. The 420 is much worse than the others, too, in spite of being nearly identical.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!