Any news on gas engine CUTS?

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   / Any news on gas engine CUTS? #191  
Torque rise when lugged is often mistaken for power. It's why a 2HP electric motor will momentary carry a 5HP load and make a 4HP internal combustion engine look like a wimp even though the 4HP ICE can perform twice the work per hour than the 2HP electric.
 
   / Any news on gas engine CUTS? #192  
It seems that some people want to compare a turbo intercooled diesel to a motorcycle engine??? What next, challenge your Grandma to an arm wrestle?
If they want to compare gas to diesel it should be something similar like a natural aspirated 5.7 Olds, 6.2 Chev or 6.5 Chev vs 5.3 DI gas Chev.
Of a Ford Eco-Boost 2.7 or 3.5 vs a similar sized turbo diesel such as the Fiat Chrysler VM Motori A 630 DOHC .
 
   / Any news on gas engine CUTS? #193  
It seems that some people want to compare a turbo intercooled Cummins 6BT diesel to a gas motorcycle engine??? Or a John Deere model G vs a John Deere 720 diesel in fuel efficiency .What next, challenge your Grandma to an arm wrestle?
If they want to compare gas to diesel it should be something similar like a natural aspirated 5.7 Olds, 6.2 Chev or 6.5 Chev vs 5.3 DI gas Chev. We will even spot the diesel a few points and compare them to a Chev 5.3 port injection.
Of a Ford Eco-Boost 2.7 or 3.5 vs a similar sized turbo diesel such as the Fiat Chrysler VM Motori A 630 DOHC .
 
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   / Any news on gas engine CUTS? #195  
Here is the last gas powered tractor that I am aware of.

TractorData.com Cub Cadet 5252 tractor engine information

Here is the diesel version with 2hp less.

TractorData.com Cub Cadet 5234D tractor engine information

The gas version was $2,299 less.

Now someone needs to find fuel use charts for them so we can compare.

I just realized the 5252 was 2WD.

There was a 5254 that was 4WD like the 5234D and it was $600 less than the diesel version. It had a liquid cooled Kawasaki.

TractorData.com Cub Cadet 5254 tractor information
 
   / Any news on gas engine CUTS? #196  
No doubt a similar hp diesal has more torque then a gasoline engine. But we used a regular old super farmall M, 4 cylinder gasoline engine that we've used since the early 50's. Don't do anything special with it at all, and runs like a top. We also use j5 bombardiers, 6 cylinder flathead 6 that are extremely torquey and pull really hard where a farm tractor would only dream of and do nothing special with those, they are 40+ years old. Gas engines seem fine to me. We aslo use a mahindra 2816 diesel. No real preference. I would prefer the gas in the j5.
 
   / Any news on gas engine CUTS? #197  
No doubt a similar hp diesal has more torque then a gasoline engine. But we used a regular old super farmall M, 4 cylinder gasoline engine that we've used since the early 50's. Don't do anything special with it at all, and runs like a top. We also use j5 bombardiers, 6 cylinder flathead 6 that are extremely torquey and pull really hard where a farm tractor would only dream of and do nothing special with those, they are 40+ years old. Gas engines seem fine to me. We aslo use a mahindra 2816 diesel. No real preference. I would prefer the gas in the j5.

Other than fuel use in GPH, the gas versions of the same chassis in diesel pulled just as much .
In fact remember how gutless the Olds 5.7 , Chev 6.2 diesel and the Chev 6.5 diesel are. A Chev 5.3 will walk all over them with more power, torque, greater reliability and lower fuel cost per mile.
 
   / Any news on gas engine CUTS? #198  
Other than fuel use in GPH, the gas versions of the same chassis in diesel pulled just as much .
In fact remember how gutless the Olds 5.7 , Chev 6.2 diesel and the Chev 6.5 diesel are. A Chev 5.3 will walk all over them with more power, torque, greater reliability and lower fuel cost per mile.

You keep saying people shouldn't compare engines of different vintages, but you continue to do that exact thing. The Olds 5.7 came out in 1978. The Chevy 5.2 and 5.7 came out in 1982.

The DI Chevy 5.3 came out in 2013....that's 31 years difference. Heck, even the non-DI versions of the 5.3 Chevy are at the very least 17 years newer than the other engines you mentioned.

Apples-to-oranges.

Talking about 30 year old car and light truck engines when the topic is tractor engines is silly. Cars and light trucks putter around at a fraction of their rated power and torque. Tractors operate at or near rated power, or a significant portion of it (PTO speed) for hours on end.

Nothing you say will change that even a CUT's duty cycle is significantly different than road cars and trucks. Nothing you can say will change that the best diesels have around 15% better thermal efficiency than the best gas engines.

If tractor manufacturers thought they could turn a profit, and make a decent product, with a gasser SCUT/CUT, they would have already done so. There is no way that they didn't have that discussion when Tier III and Tier IV emissions rules were proposed for off-road diesel engines. Nothing happened with that for a reason.
 
   / Any news on gas engine CUTS? #199  
Ventrac still uses some Gas engines - I have the 4231 Gas Liquid Cooled and the new 4500 series offers a B&S and a Kawasaki 31 Hp. Ventrac is low center of gravity, articulated, and made in Ohio.

Here is the last gas powered tractor that I am aware of.

TractorData.com Cub Cadet 5252 tractor engine information

Here is the diesel version with 2hp less.

TractorData.com Cub Cadet 5234D tractor engine information

The gas version was $2,299 less.

Now someone needs to find fuel use charts for them so we can compare.
 
   / Any news on gas engine CUTS? #200  
Looking at the mileage of the same vehicle with a DI gas vs a diesel. The thermal efficiency must be similar between DI gas and diesel. As the diesel barely makes the 13% greater mileage it should with diesel's greater btu per gallon.
You are mixed up in your numbers between percent differnce btu per gallon and percent combustion efficnecy .
Since we operate the vehicle on cost per mile. The greater btu per dollar in gasoline and the lower vehicle/machine price makes the DI gas is the winner .
Manufactures sell where they can make money. As the highway vehicle, boat, snowmobile , motor cycle , ATV , RTV and small equipment purchasers want economical power. They purchase DI gas. There are some people stuck on the idea that since diesel was better from 1920 to 2006. They are not changing their minds or going to accept that thier pet diesel is threatened. They have invested years of telling people and purchasing diesels . They can't loose face and change their minds now.

Take a couple of minutes and read about the Otto Cycle, combustion and efficiency.

http://energy.gov/sites/prod/files/2014/03/f8/deer10_johansson.pdf
 
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