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Case Tractors Discussion Forum
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Converting from gas to diesel

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4435

04-25-2007 07:39:46




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I have a 730 already torn down due to #4 breaking a ring. As we all know these are gas hogs and gas isn't 9 cents a gallon anymore. Have access to a 700 diesel that is due to be scrapped out. So far I can see that heads, camshaft, injection system, oil pump and I am sure other things would have to be swapped. Please tell me what I am missing and that I am totally nuts. Thanks Tom
P.S. this would be casomatic to casomatic

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MI-Case

04-27-2007 08:39:13




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 Re: Converting from gas to diesel in reply to 4435, 04-25-2007 07:39:46  
Diesel combustion is a lot tougher on just about everything than gas combustion. The big thing is that where a gas engine might run a 8:1 or 10:1 compression ratio, the diesel runs more like 20:1. Wears out the main bearings, crank, rodbearings awful fast. Also the stroke on diesels tends to be longer, making that higher compression and better torque.

It can be done (witness the GM 350 Diesel sold in Olds and others in the 80's - almost exactly a 350-V8 with diesel heads and carbs) but longevity is poor.

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jaker2

04-27-2007 10:43:21




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 Re: Converting from gas to diesel in reply to MI-Case, 04-27-2007 08:39:13  
If I am thinking correctly the 700-800 gas and diesel use the same rods and crankshafts. The only difference may be in the pistons and and the camshaft. Case engines are not even close to comparing a olds 350. A 4 cylinder case engine has 5 main bearings so it can take the abuse.



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INCase

04-25-2007 09:25:11




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 Re: Converting from gas to diesel in reply to 4435, 04-25-2007 07:39:46  
If the Diesel tractor is a Caseomatic it is NOT a 700 it would be an 800. From what I understand you can not easily switch a gas block to diesel. There were also some other differences between the "00"s" and the "30 series" engines. It would be less work to swap the engines out if the "700" is running. Unless you"re farming full time i"d keep the gas myself.



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