Forum Discussion
Me_Again
Mar 30, 2022Explorer III
JRscooby wrote:valhalla360 wrote:JRscooby wrote:
Back in early '70s I leased on to a company that half the company trucks where inline 6I71 2-stroke. The others, 6V71. The worst of the I6s could out pull the best of V6s. Most of the owner operators had 8V71s Some of them could be passed by the best of the I6.
That's not inherent to "I" vs "V" that's because of the V6s were generally designed for cars/minivans where towing was not a priority, so they weren't worried about generating big torque numbers. Those vehicles generally didn't have an engine bay long enough to accommodate an "I" configuration.
False. Both the V-6, and I-6 I talk about where 2-stroke diesels built as truck or industrial engines back when the line was Detroit Diesel makes the engines by the mile, will cut off what you want. My '67 Pete, had a 12V71. (Buzzin' Dozen) At least 1 tugboat working the river had a pair of 16V71s I hauled a gen-set powered by inline 8, I assume it was 71) Most of the engines had CID of 71 inches per cylinder
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, and 6 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
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