Ah, gas versus diesel;
brings back memories of the late 50's 60's.
In my opinion the main reason that most tractors went diesel was the fuel economy, back when a WD Chalmers was a big tractor (compared to a ? VAC Case), there was allways a concern on operating cost a great many of the old tractors were designed to start on gas then switch to kerosene just for economy. Then the gassers took over for a while with a few early diesels, at that time they were hard starting smoke belching pain in the rears at times. Then farms started needing ? more horsepower, about 60-70horsepower the diesel fuel economy was so much grater then a gas engine, run an IH 806 on gas for a days hard tillage work then the same 806 with a diesel, you where converted. It would be interesting to see how a fuel injected gas 40 HP tractor would do when worked next to a 40 HP diesel. I had to put a new condenser in an 656 just last week, points had been changed, carb tinkered with hard starting no rpms, old gas took more tinkering with then diesel. New gas with computerized ignition and fuel injection compared with a common rail electronic diesel would be interesting and both would be nice when working right and when not working neither would be worth a ****. Personally I still perfer mechanical diesel injection tractors.