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Tool Talk Discussion Forum

Detroit Diesels

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Sam from WA

05-09-2008 09:02:10




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Whats worng with a Detroit Diesel that people cuss at em, saying they won"t touch them old hard starting son of a guns with a ten foot pole? I never have any problems with our 4-53s, 6-53s, 6-71s, 8-71s, 6V-92s, or our 8V-92s. They always start on the first try and go like a bat outta heck. I"d rather work on a four stroke engine, but I"ll gladly work on an ol" Detroit. The way I see it, any engine is a good one, so long as it is taken care of. I like Cats and Cummins because they"re easy to work on and they"re quiet, but who doesn"t like a challenge and that Detroit two-stroke scream?

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greygoat

05-12-2008 08:33:18




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
As a retired railroad locomotive mechanic I can
verify that the "Detroit Diesel" is very much
alive as 16V645 (V16, 645 cu in per cyl, 3000Hp)
and 16V710, (V16, 710 cu in per cyl, 4000 Horse)
2 cycle engines the are the "Backbone" of todays
American railroads. At 60 miles per hour they
run 900 RPM and use 200 gallons per hour, pulling a mile long train of piggyback trailers.General
Motors Locomotives are known worldwide for their
reliability!

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buickanddeere

05-11-2008 15:00:06




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
Nice try but it isn't there. b.t.w. it's written in scripture that those who re-word or tinker with the book of Revelation are in for trouble most serious.



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El Toro

05-10-2008 15:40:25




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
They were in thousands of military vehicles M113APC, M577, M561 Goat, M109, M110 and M578 & all those Oshkosh trucks, but they put Cats in them now. I probably missed a few too. Good engines. We had an EMD 2 cycle only turn 900rpm's, but developed 1600hp & at that time were made by GM. We could pull an M1A1 tank at 45 mph. Hal



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Dusty

05-10-2008 05:30:34




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
Theres a story about a farmer that had a farm tractor with a Detroit Diesel in it. It seems that he had it rebuilt and painted. He was real proud of that tractor so, he had a picture of it framed and hung it in the living room. The next morning there was oil running down the wall.

Dusty



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rexhellwig

05-11-2008 13:20:34




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 Re: Detroit Diesels in reply to Dusty, 05-10-2008 05:30:34  
Here's how to identify various mechanics:

Honda or BMW
third party image

John Deere third party image

Detroit Diesel third party image

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buickanddeere

05-09-2008 21:55:01




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
I had wondered what ever became of that overly keen 8V92.
The very flat torque band of a two stroke is a different kettle of fish from a fourstroke's peaked torque curve.
The two stroke is always at it's "peak torque no matter the rpm". Once overloaded, rpms will drop.
The fourstroke which runs are reduced volumetric efficiency while at peak HP. Does indeed pickup torque as the engine is overloaded and lugged down into the rpm band where a four stroke's volumetric efficiency improves.

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buickanddeere

05-09-2008 18:31:12




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
Most were drive until they dropped, then at best patched up and ran some more.
A S series two stroke didn't have a surplus of compression to begin with. Add lots of wear, an undersized replacement battery and tired wiring on a cool day. They won't make enough heat on the compression stroke to ignite the fuel. The N, C and A series injectors have much improved fuel atomization & spray pattern.
At fall shows my N series 2-53 gets parked beside S series 2-53's. The N series starts on the 1st or 2nd turn. The others require extended cranking and even a boost, ether or a tow.
Even mine if the throttle is advanced too far and the rack goes full. It won't start worth beans.

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J Schwiebert

05-09-2008 18:27:09




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
In 1988 I was doing some research for an aftermarket parts sales group and I had gotten a paper from a Cummins file sent to me by a lady at Cummins where General Motors had asked Cummins about buiding some engines for them and one line in that was : Have you considered the two stroke principal. Of course the paper dated from the mid 1930's. I also have part of another paper where Rollin White of Cletrac fame was building a 2 cycle diesel to use in Cletrac crawler in the 1930's. I don't have the whole thing but what I have is very interesting on the development of that engine. Several were made. Lot of things in common with a 71 cylinder. The depression ended the project. I wonder where the design people went.

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jdemaris

05-09-2008 17:44:14




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 They were the first diesels in reply to Sam from WA, 05-09-2008 09:02:10  
Basic design of the old Detroit two-stroke was the first diesel engine - invented years before Rudolph Diesel invented his. The two-stroke supercharged diesel came out in 1878. But, Mr. Diesel had better marketing with his in 1893 so we now have "diesel" fuel instead of "Clark" fuel. Mr. Clark invented the first working "diesel" engine - two stroke with a supercharger and G.M. later bought it.

I've always found them to be very rugged. They are also cheap and were often put into trucks that should of had more power. Subsequently many got beat to death. We were often told to "drive them like we hated them", especially with milk tankers in the mountains.

I still have four machines with Detroits and I love them. Extremely overbuilt and simple to work on. Also, chronic oil leakers - but no big deal as long as no hazmat teams come to my place.

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guido

05-09-2008 17:14:54




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
Hello Sam from WA.
I never met a Detroit Diesel I didn't like until I did a head gasket job on an 8.2 4 stroke Detroit Diesel. Had to jack the cab to get the heads off. They put them in boats also@%&*^%$. The injector's hight setting into the 10.000 of of an inch.( gauge graduation was in 1.000'S?) to set the injector's hight, every injector a different setting!
What a piece of engeneering.!!!!! !!!!
The 2 cycle ones are screamers. There are some 3/53 pulling sleds at the local track., they sound more like a V8 than a little 3/53. Was it you that had a problem with a 6v92 running away at times? if you posted what you found to fix them I missed it. The new Detroit Diesel 4 cycle series 60 and 50 are doing O.K.
Guido.

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Sam from WA

05-09-2008 19:56:30




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 Re: Detroit Diesels in reply to guido, 05-09-2008 17:14:54  
No, it was an 8V-92 we were having problems with. In the end, it wasn"t really much of a problem, mostly a slightly stick throttle linkage and a little bit of rust on the rack. Nothing a little clean up didn"t help.



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moonlite 37

05-09-2008 14:55:53




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
Truck with Detroit Diesel with Allison transmission only truck referred to in the Bible. Revelation 23:5 "In the later days screaming creeping things will be seen moving about on the face of the earth"



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CCer

05-09-2008 14:51:43




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
One of the guys on here usta call 'em converter engines, they converted FUEL into NOISE!



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trucker40

05-09-2008 13:20:02




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
Just my opinion of them,crack heads,crack blocks in main web area,Sound good,but have less torque than other motors,leak oil,can run away with themselves.Back in the days when thats all there was they were alright.When you didnt have good roads,didnt mind getting 4 or 5 MPG,couldnt run but 45 or 55 MPH most of the time,werent in a hurry,didnt mind reringing it every 100,000 miles,it worked.Improvements were made to other brands to where Cummins,Cat,and all the rest got better fuel mileage and lasted lots longer between overhauls,and an overhaul could be done on a Cat in 8 hours,it would take a good 40 if not more to rebuild a Detroit.

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ksampson

05-09-2008 11:45:42




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
Just can't beat the sound of a Detroit.



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rockyhawaii

05-09-2008 09:39:18




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 Re: Detroit Diesels in reply to Sam from WA, 05-09-2008 09:02:10  
I wonder the same thing. The military has relied on Detroits for decades, and they are very popular with our local fishing boats.



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