Diesel vs gas

[4570Man]

It was $2.64 here on Friday....

I haven’t bought any in probably 2 weeks but it cost me $5.80 to fill my 2 gallon can.

 

[4570Man]

once again; thanks to government shenanigans.

ps. pretty sure you can buy bulk e free 87 for quite a bit less than $3 gallon.

With the Dixie chopper on backup duty and the diesel grasshopper doing most of the work I don’t burn very much e free gas anymore. Local bulk place wants 700 gallons a month to have an account.

 

[Sawyer Rob]

If you can use that diesel fuel below zero, it has additives in it.

It probably does, BUT I didn't put it in... I don't add anything to my diesel, storage or other wise...

I have NO problem starting my loader tractor all winter long and yes it does go below zero here in the winter.

SR

 

[LouNY]

I am going to go back a bit in the 50's we had gas and or distillate engines,
in the 60's and 70's up to 80 HP you had a choice of gas or diesel, depending on the make and model the gas and diesel turned about the same rpm (within a few hundred), the power delivery was very similar the gas motors had about the same lugging power as the diesels.
A lot of the gas engines had torque peaks at 12-1400 rpm and would pull right down to 3-400 rpm,
then of course the poppin johns would lug down to just a few rpm gas or diesel.
The gas motors generally started better, especially in the cold weather,
most of the diesels had a bit better longevity, but also cost more,
the big difference was in fuel usage, the gas engines used a lot more gasoline to do the same work in a day then the diesels used,
especially when you went over the 60 HP level.
The cost of diesel was a bit less per gallon, I can't recall the exact $$$.
As time went on the diesel economy surpassed the gas by an even larger amount.
It would be interesting to see a gasoline tractor with the newest injection technology and ignitions, to compare with the new diesels.

 

[buickanddeere]

Pulled out my IH2500b manuals.

It was available with either a 200 cubic inch gas engine or a 239 cubic inch diesel engine.

With gears transmissions:
Full load engine speed for both engines is 2200 rpm.
High idle for the gas is 2420 rpm and the diesel is 2480 rpm.

With hydrostatic transmissions:
Full load engine speed for both engines is 2400 rpm.
High idle for the gas is 2640 rpm and the diesel is 2650.

The bore on the gas is 3.812 and diesel is 3.875.
Stroke is 4.39 gas and 5.06 diesel.

So, the diesel requires a larger bore and stroke and HIGHER rpms than the gas engine.

Well said there M.R.

 

[MossRoad]

I haven’t bought any in probably 2 weeks but it cost me $5.80 to fill my 2 gallon can.

It cost them about $356 for 135 gallons..... I complained about spending about $80 on 32 gallons of gas in my Suburban the other day! :laughing:

Gas was $2.73 Monday and went up to $3.09. I got it at $2.73.

 

[MitchellB]

I got a Ford 1958 861 Diesel tractor. I believe this was Ford's first year for diesel tractors. The gasoline counterpart uses virtually the same engine block.
According to Tractor Data online, that diesel engine has the same bore & stroke 3.90x3.60 inches and the same 172 cubic inches as the gas engine. However the diesel has 16.8:1 compression compared to 7.5:1 for the gasser. The diesel has 56.3 hp and 140.4 lb-ft of torque at 1400 RPM; rated RPM is 2200. The gasoline engine is 62.6 hp, rated RPM is 2000, torque is 166 lb-ft at 1600 RPM. So it seems to me the gasoline engine is a little stronger when the cubic inches and bore/stroke are identical.

 

[dfkrug]

87 - octane gas is about $3.50/gal now in CA; diesel is over $4. You prob have to go to Hawaii
to find prices that high in the US.

I notice that the smallest diesel engine sold now in CA (in new excavators) seems to be 3-cyl, Yanmar, Kubota, or
similar, and only about 10 hp and a bit over 700cc. A 420cc gas engine (CARB/EPA-compliant) puts out 15-16hp.

 

[MHarryE]

Back in the 70's I was working as an engineer for Cleaner Combines. We used the same basic engine gas or diesel but the gas wouldn't handle slugs fed into the combine like a diesel. Slug -- poor -- dead -- dig the slug out. So we changed to GM gas engines to get more gas engine power. Combine 155 HP from a Chef 350 gas or 130 from a turbo 301 Allis-Chalmers. Same result except sucking a tremendous amount extra fuel when fuel prices were skyrocketing with $1 per gallon in site. Bit the bullet and dropped the gas, or rather the customers did it for us.

I have a Kubota M7-171 rated by Kubota at 140 PTO up. The Nebraska test shows it put out slightly more HP at the E PTO 1600 rpm than it did at the rated PTO 2000 rpm. Since HP=2 × pi x T/33,000 the torque has to really climb to get more HP at 1600 than at 2000. Our JD 7720 is even better rated at 130 PTO but by the Nebraska test peaking at 170 HP as it pulls down.

I grew up with Far all H's and M's but what a difference when we got our first diesel - except for starting at 40 below. It didn't, but the Farmalls were still around.

 

[Groo]

I remember hearing about a well drilling rig around here. The got it with a Dodge V10, and it got like 3mpg for them. Needless to say; they got a Cummins when the V10 mysteriously burned up. I think the B5.9t got like 12mpg or so. Not too surprising. Those 8.0ls were always thirsty.