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Re: Gas outpowers the diesels


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Posted by jdemaris on November 07, 2010 at 14:26:07 from (67.142.130.36):

In Reply to: Re: Diesel vs. Gas tractors posted by JayinNY on November 07, 2010 at 12:36:46:

I don't know of any. Post the specs if you do. I've never come across a diesel that made as much horse or torque as a gas engine with same bore and stroke (unless turbocharged).

A few good examples.

Isuzu took their gas engines and converted them to diesel, so some are the exact same bore and stroke. Chevy used some in S10s, Chevettes, LUVs.

Chevy/Isuzu 1.8 liter gas (110 cubic inches) four-cylinder, 80 hp at 4800 rpm and 95
lb./ft. torque at 3000 rpm
3.31" bore x 3.23" stroke.

Same when converted to diesel.
Chevy/Isuzu 1.8 liter diesel (110 cubic inches) four-cylinder, 51 hp at 5000 rpm and 77
lb./ft. torque at 2000 rpm
3.31" bore x 3.23" stroke

Now, take a Isuzu and compare to a Chevy designed gas engine with similar bore, stroke, size.

GM/Isuzu 2.2 liter (139 c.i.) diesel - 62 horse at 4200 RPM and 96 lb. ft. torque at 2200 RPM
3.4" bore by 3.62" stroke

Chevy Vega 2.2 liter gas engine, (140 c.i.) - 90 horse at 4600 RPM, 115 lbs. torque at 2400
RPM, 3.5” bore by 3.62” stroke

Now, compare a straight-six diesel Dodge used in 1/2 ton pickups to a similar sized straight-six gas engine Chevy used.

Dodge 1/2 ton pickup diesel, 3.9 liter, 243 cubic inches, in-line six cylinder, 100 horse at
3700 RPM, 165 lbs. torque at 2200 RPM. 3.62” bore by 3.94” stroke.

Chevy gas engine, 4 liter, 250 cubic inches, in-line six cylinder, 145 horse at 4200 RPM,
230 lbs. torque at 1600 RPM, 3.9” bore by 4.5” stroke.

Now, compare John Deere 1010 diesel and 2010 gas -both exactly same size, bore and stroke.

John Deere 1010 diesel engine, 2.4 liter, 145 cubic inches, 40 flywheel horsepower at
2500 RPM, 95 lbs.torque at 1500 RPM, 3.62” bore by 3.5” stroke.

John Deere 2010 gas engine, 2.4 liter, 145 cubic inches, 50 flywheel horsepower at 2500
RPM, 114 lbs.torque at 1500 RPM, 3.62” bore by 3.5” stroke


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