Take 50+ year old technology for best fuel economy- Hemisperical (or close to it) combustion chamber, dual spark plugs and dual spark source like 2 magnetoes, maybe direct fuel injection or leanable light throttle carberator. You can find examples in Pratt&Whitney 14 cylinder radials. BMW /5, /6 motorcycle engines had some dual plug upgrades when worried about unleaded gas here- claimed road mileage increased 5-10% under 90mph. Ford 140 inch 4 with dual ignition advertised about same mileage gain still with carb. Central spark plug, high energy ignition and port type fuel injection nowadays getting about the best compomise of fuel economy and performance. Cadillac has/had a 8stroke ignition cycle for light load running to get fuel economy and run cool- basicly fuel injector squirted only 1/2 the time. Lots of ways to get fuel economy known- but the marketable balance of power and performance may vary between Citroen 2CV and Ford Taurus when the 75 mile speed zones for 100 miles are considered. RN
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.