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Tractor Talk Discussion Forum

2-Cycle Diesel

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Treeman

10-07-2005 05:58:38




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While watching RFD TV I heard about a two cylinder, two cycle, diesel engine used on some farm machinery. I didn't catch what it was used on. Anyone know anything about such an engine?




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wdtom

10-07-2005 19:55:48




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 Re: 2-Cycle Diesel in reply to Treeman, 10-07-2005 05:58:38  
I am no expert on GMs but I know a little about 71s. They were made in 1, 2,3, 4,6, V8, V12, and V 16 versions I believe. I have seen most of them. Many were on navy ships, and in navy boats. Some were in trucks and tractors. The ship I was on also had two cycle GMs for power. Main engines were V16 278a and generator engines were straight 8, 268a if I remember right. The v 16s had about a 8" bore and 10" stroke, the 268s were a bit smaller. I think at one point most all GM diesels were 2 cycle.

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RayP(MI)

10-07-2005 18:36:14




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 Re: 2-Cycle Diesel in reply to Treeman, 10-07-2005 05:58:38  
Didn't GM also make a 6 cylinder 2 cycle diesel used for trucks. Saw one torn down in a school shop - student was rebuilding it to be used (again) as an irrigation pump on father's farm. Looked pretty impressive - betcha it was real noisy, as exhaust had no provision for muffler.



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NEsota

10-07-2005 12:34:10




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 Re: 2-Cycle Diesel in reply to Treeman, 10-07-2005 05:58:38  
Forty some years ago I was operator at a small municipal diesel-electric plant. The largest generator was 800KW and was driven by a two cycle opposed piston diesel. I think it was twelve cylinder and that it usually was used in marine applications. Prior to this on the U.P.R.R. as a switchman I had some exposure to another interesting engine used on a few of their locomotives. It was a turbine and is now part of R.R. History.

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Vince H

10-07-2005 10:50:43




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 Re: 2-Cycle Diesel in reply to Treeman, 10-07-2005 05:58:38  
They also use these on diesel locomotives. They produce slightly less horse power, but are more efficient. Now there is a big difference when loco's have engines that are 310 cu. in. displacement for each cylinder.



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Bob M

10-07-2005 06:09:37




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 Re: 2-Cycle Diesel in reply to Treeman, 10-07-2005 05:58:38  
The 2 cylinder, 2 stroke you descripbe would be the Detroit 2-53. It powered the JD 435 tractor.

4 cylinder variant of this engine (the 4-53) powered the Oliver 1900 GM and 1950 GM tractors.

It's larger displacement, 3 cylinder cousin (the 3-71) powered the Oliver 99 GM, and I believe also certain Massey 97(?) tractors.

And the 6 cylinder Detroit 6-71 powered the John Deere 8010 - JD's first articulated 4WD tractor.

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Gene Davis (Ga.).

10-07-2005 18:39:17




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 Re: 2-Cycle Diesel in reply to Bob M, 10-07-2005 06:09:37  
Don"t forget the famous screaming "jimmie", the 6-71 that powered so many over- the-road trucks in years past when there were "Detroits" and "Jimmmies".



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Coloken

10-07-2005 09:49:55




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 Re: 2-Cycle Diesel in reply to Bob M, 10-07-2005 06:09:37  
And, I think, the Allis crawler..HD5, was it?
All ways wanted one to play with.
Kennyp



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Bob M

10-07-2005 11:14:17




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 Re: 2-Cycle Diesel in reply to Coloken, 10-07-2005 09:49:55  
I don't recall the model numbers but there were several different Allis HD series crawlers using Detroit diesels ranging from 2 to 6 cylinders.

The largest (HD-20 maybe?) used the Detroit 6-110. Displacing 660 cubic inches I believe it was the largest 6 cylinder 2 stroke Detroit ever built.



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Wardner

10-07-2005 12:00:16




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 Re: 2-Cycle Diesel in reply to Bob M, 10-07-2005 11:14:17  
Bob,

GM also built Detroit Diesels with 149 cubes per cylinder. I have seen them in marine applications and self propelled rail passenger cars made by Budd. These were popular as commuter trains.

GM also built Todelo and Cleveland 2 stroke diesels. These are much larger and may have been built by the EMD division of GM. I think the Toledo's had 256 cubes per cylinder. I have used the past tense here but it is possible that these products are still being manufactured. Let Google do the walking.

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Bob M

10-07-2005 12:26:12




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 Re: 2-Cycle Diesel in reply to Wardner, 10-07-2005 12:00:16  
Wardner - There was indeed the 149 also! The only ones I'm aware of had 12 and 16 cylinders, though engines with fewer cyliders may have have been built.

Detroit also briefly built a valveless 2 stroke, the model 51.

The EMD 2 stroke locomotive engines evolved from the Winton 201A, 2 stroke diesel. The original engines had 567 cubic inches per cylinder. Later variants increased this 645 and 711 cubic inches per jug.

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Wardner

10-07-2005 13:23:05




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 Re: 2-Cycle Diesel in reply to Bob M, 10-07-2005 12:26:12  
Bob.

I think you may be right about the 149 DD. I am now thinking that the Budd cars had 6-110 DD laid on their side. Some of the cars had two engines and others only one. The single units were usually put in trains with four or more cars and were positioned at the front and rear. On the Boston and Maine RR, they always fired up every engine and they were never shut down even on weekends. EPA would never let that happen now-a-days. The yard in Lowell probably consumed 1000-2000 gals of idling fuel per weekend. I think they were concerned that they might not start on Monday.

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Bob M

10-07-2005 15:30:54




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 Re: 2-Cycle Diesel in reply to Wardner, 10-07-2005 13:23:05  
Wardner -

The same practice (letting engines idle for days at a time) was the norm on the railroads here. But back then they were paying perhaps a dime a gallon for diesel, so who cared!



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Wardner

10-07-2005 23:30:10




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 Re: 2-Cycle Diesel in reply to Bob M, 10-07-2005 15:30:54  
Speaking of 51 series, there is a rebuilt 4-51 on ebay right now. I've never seen one run. The ad said they stopped making them in '53 but I think they were produced until '57 or '58. I have a low serial number (below 300) 2 valve 4-53 that was made in '58. I assume that motor replaced the 51 series.

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Tramway Guy

10-07-2005 09:13:57




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 Re: 2-Cycle Diesel in reply to Bob M, 10-07-2005 06:09:37  
And the 4-71 GM powered the Fox Self-propelled forage harvester. What a machine that was.



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the tractor vet

10-07-2005 18:09:30




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 Re: 2-Cycle Diesel in reply to Tramway Guy, 10-07-2005 09:13:57  
Yea you could hear it in the next county.



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730 virgil

10-11-2005 18:21:20




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 Re: 2-Cycle Diesel in reply to the tractor vet, 10-07-2005 18:09:30  
when i was younger i worked in a quarry . one of the rock crushers had a 6-71 gmc or detroit screamer powering it . that was LOUD i ran aother crusher that was powered by a 6 cylinder cat most ot the time one not know it was running as that 6-71 drowned it out



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