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Old 03-27-2013, 11:16 AM
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bolivier bolivier is offline
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Question Diesel vs Gas
I'm just wondering why it takes 3 diesel cylinders to make 15hp, and only one gas cylinder to make 16hp? Just kinda popped into my head. What's the advantage of diesel over gas? (other than the cool factor) Do they have more torque?

Brent
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Old 03-27-2013, 11:32 AM
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Originally Posted by bolivier View Post
I'm just wondering why it takes 3 diesel cylinders to make 15hp, and only one gas cylinder to make 16hp? Just kinda popped into my head. What's the advantage of diesel over gas? (other than the cool factor) Do they have more torque?

Brent
Well, a D600 is 36.6 CI, and a K341 is 34 CI , so not a huge difference in cubic inches. The biggest reason for three cylinders is to balance the engine, a 1 cylinder diesel that size would rattle your teeth out. Diesels are better on fuel than gas engines for the most part. And yes, the diesel has more torque, my 1782 pulls better than my 20 HP 982.
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Old 03-27-2013, 11:34 AM
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bolivier bolivier is offline
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Ahh. Didn't take the time to look at the ci of both engines. Makes sense. So the reason a 1 cylinder diesel would "rattle your teeth out" is the high compression??
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  #4  
Old 03-27-2013, 11:51 AM
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Ahh. Didn't take the time to look at the ci of both engines. Makes sense. So the reason a 1 cylinder diesel would "rattle your teeth out" is the high compression??
Being the High compression and compression ignition is the biggest difference between a gas and diesel I would say yes. A basic rule is the more cylinders an engine has the smoother it runs.
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Old 03-27-2013, 02:54 PM
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A diesel does not use as much fuel as a gas engine. Hence why train locomotives/semi trucks are diesel engines. I've mowed with both a gas tractor and a diesel one. Going from the gas to the diesel I couldn't believe how much the diesel sips fuel.
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Old 03-27-2013, 03:27 PM
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Even though the HP is nearly the same the torque is no where near the same. I think the 1650 has 31 fl/lbs of torque while the kubota diesel in like the 782D has 44 fl/lbs of torque
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Current Workhorses: 1977 1650, Sleeve hitch, #2 tiller; 1985 782, QA 42A snowblower, 50'' deck, 42'' blade, Ags, IH Wheel weights; 197? 1250; 1976 1250, hydraulic lift, 44'' deck, 54'' blade (currently needing a engine)
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