Forum Discussion
JRscooby
Mar 30, 2022Explorer II
Me Again wrote:
I do not believe there was an actual single block I-8 71. Maybe two 4-71's. In V configuration there were 6V71s, 8V71s, 12V71s, 16V71s, and a few 24V71's. Heads were for 1,2,3,4,6,and 8 cylinders only I believe.
Series engines CU IN per cylinder:
51
53
71
92
120
Quote:
The Detroit Diesel Series 71 is a two-stroke diesel engine series, available in both inline and V configurations, manufactured by Detroit Diesel. The first number in the model series designation refers to the number of cylinders, and the second - 71 - the nominal displacement per cylinder in cubic inches, a rounding off of 70.93 cu in (1.2 L).
Inline models included one, two, three, four and six cylinders, and the V-types six, eight, 12, 16 and 24 cylinders.
The two largest V units used multiple cylinder heads per bank to keep the head size and weight to manageable proportions, the V-16 using four heads from the four-cylinder inline model and the V-24 using four heads from the inline six-cylinder model. This feature also assisted in keeping down the overall cost of these large engines by maintaining parts commonality with the smaller models
I can't say for sure about the straight 8. It was part of a load of scrap I pulled of a refinery. 4 cylinders where open, head still on others. Only had opening for 1 blower, would think if it was 2 engines there would been 2.
Pulling the long, heavy head off a I6 in a 93 inch BBC GMC took 2 good men, because had to go out the right door.
And yes, they did make several size cylinders but bet more 71 than all others combined
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