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GM diesel
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birddog
- 10+ Years
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GM diesel
Does anyone know what the numbers meant (if anything) on the old GM Detroit diesels? Such as; 4-71. I was thinking maybe the number of cylinders and the cubic inches for each cylinder.
Mark "birddog" Birdeau
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Barnyard
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Re: GM diesel
The 71 indicated the engine series and the first number was the number of cylinders. I used to run a Euclid 82-30 dozer that was a 6-71. It was a six cylinder. Not sure how you calculated the cubic inches.
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Mr E
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Re: GM diesel
Barnyard wrote:The 71 indicated the engine series and the first number was the number of cylinders. I used to run a Euclid 82-30 dozer that was a 6-71. It was a six cylinder. Not sure how you calculated the cubic inches.
Per Wikepedia:
The 71 in the model series designation refers to the displacement per cylinder in cubic inches (actually 70.93 cu in / 1,162.4 cc). Bore and stroke is the same to all units, at 4.25 x 5.0 inches (107.95 x 127 mm).
In the middle of every difficulty lies opportunity. - Albert Einstein
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Roy Edenfield
Deep South CubFest #10
February 14 & 15, 2020
. Roy Edenfield
Deep South CubFest #10
February 14 & 15, 2020
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jwmcd
- 10+ Years
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Re: GM diesel
Birddog, you and they are right. It is number of cylinders and cubic inches per cyl. 4-53 is 212 cubic inches, 6-53-- 318ci, 6-71--426ci, 6-92--552ci etc. Biggest I've seen is 16V-110--1760 ci in a whole tree chipper. I think Detroit made some locomotive and tug motors that were even bigger.
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birddog
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Virginia Mike
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Re: GM diesel
The rarest tractor I ever had was a 1959 JD 435D with a 2 Cyl. GM diesel in it.
I think it was a 271 engine.
We used it on the farm and traded it on another tractor, before antique tractors became popular.
I think it was a 271 engine.
We used it on the farm and traded it on another tractor, before antique tractors became popular.
Best,
Mike
Tractors are made to work!
"A Cub will do as much as a team of horses,.. More in hot weather!" - C. W. Spradlin 1909-1994
Mike
Tractors are made to work!
"A Cub will do as much as a team of horses,.. More in hot weather!" - C. W. Spradlin 1909-1994
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Virginia Mike
- 10+ Years
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'49 JD "B"
'79 JD 2040
'50 DB "Garden Tractor"
'52 DB "Super Power"
'56 DB "Big 5"
'62 DB "Super 600"
'37 McCormick Deering "LA" engine - Location: Stewartsville, Virginia
Re: GM diesel
The rarest tractor I ever had was a 1959 JD 435D with a 2 Cyl. GM diesel in it.
I think it was a 271 engine.
We used it on the farm and traded it on another tractor, before antique tractors became popular.
I think it was a 271 engine.
We used it on the farm and traded it on another tractor, before antique tractors became popular.
Best,
Mike
Tractors are made to work!
"A Cub will do as much as a team of horses,.. More in hot weather!" - C. W. Spradlin 1909-1994
Mike
Tractors are made to work!
"A Cub will do as much as a team of horses,.. More in hot weather!" - C. W. Spradlin 1909-1994
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sdurnal
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Re: GM diesel
71 & 53 series were two stroke. No fun to be around much less work on. A lot of noise for the HP they made... IMHO
The best thing about them (6-71) was the blower which are still used on dragsters. (or their clones) IMHO
Blaw-Knox pavers, Terex, and Euclid used a lot of those engines. (I've been away from construction equipment for 30 years and I believe most are gone now, or bought out)
Just my 2cents worth..
The best thing about them (6-71) was the blower which are still used on dragsters. (or their clones) IMHO
Blaw-Knox pavers, Terex, and Euclid used a lot of those engines. (I've been away from construction equipment for 30 years and I believe most are gone now, or bought out)
Just my 2cents worth..
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