Detroit diesel shootout update.

Delawaresurfman · Jul 23, 2016

Went to the county fair. I've seen just a few tractor pulls. Most of the tractors here last night were just off the farm. Only 4 in the Detroit diesel class. 1 Oliver 99, 2 Oliver 990's and a very fine restored Massey Ferguson 98. One of the Oliver 990's won. These tractors were awesome to watch. Crazy loud turning 1500 rpm's so the announcer said.
One other thing that surprised me were that the 2 cylinder John Deeres pulled so slow and long. Impressive to see them just chug along. I expected them to Peter out but they just kept going and going. Sorry no pictures my phone is full and forgot the camera. I'll go back and snap some shots. Have a great day!

T in NE · Jul 24, 2016

I think the 2 stroke Detroit's ran out closer to to 2200.

4wdtom · Jul 24, 2016

I am no GM expert but I have seen a few. One on a navy ship I was on was a 6-71 on an emergency generator, ran at 1200, rpm and was rated at 60kw if I remember. Sometimes it was run along with the regular ships service generators and for months at a time. Some 6-71s I ran in boats in Guantanamo Bay would only run up to maybe 1700 or 1800 rpm. They weren't new at the time, (1969). It depended on the condition and the load. Some of the newer ones in landing craft would run up to 2000. I went to engineman school at Great Lakes after bootcamp and one of the instructors told of being at a GM school and one of those GM instructors told of GM hotroding some 6-71s for high speed power boat ocean racing and they ran those up to 3500. not sure I would have wanted to be too near one of those.

mozark · Jul 24, 2016

Typical 2 stroke not very efficient, but they were one mean sounding engine. I had a H1 Kawasaki 3 cyl 2 stroke motorcycle and it sounded very similar. I watched a 53 series on a road grader run away with itself. It really screamed for a long time before it finally quit. Luckily the operator realized what was going on and got it stopped and got a way from it.

buickanddeere · Jul 24, 2016

(quoted from post at 10:18:20 07/24/16) I think the 2 stroke Detroit's ran out closer to to 2200.

Two valve 53 series limited to 2400, four valve 2800. 71 series 2300rpm.

T in NE · Jul 24, 2016

The tach in our brigadier showed 2200 with the 6-71t.

The thing about a marine application is cooling isn't such an issue. Your in cool/cold water, as long as you can pump enough of it through a heat exchanger.

showcrop · Jul 24, 2016

(quoted from post at 08:26:51 07/24/16) Typical 2 stroke not very efficient, but they were one mean sounding engine. I had a H1 Kawasaki 3 cyl 2 stroke motorcycle and it sounded very similar. I watched a 53 series on a road grader run away with itself. It really screamed for a long time before it finally quit. Luckily the operator realized what was going on and got it stopped and got a way from it.

Aaaahhh the Kawasaki widow-maker. Was it the blue streak? It was about the fastest bike of the time.

Detroit diesel shootout update.

Delawaresurfman

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T in NE

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4wdtom

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mozark

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buickanddeere

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T in NE

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showcrop

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