You're absolutely correct... Probably the BEST DIRECT example is the Ford Basildon engines. They were designed as a diesel engine and were mostly uniform throughout the range having 3, 4 and 6 hole versions utilizing many of the same parts. These engines were then modified to spark ignition... but the bottom ends were identical. I believe the cam was also identical. Heads were similar... main difference to drop the comp ratio was in the pistons. The gasoline engines made considerably ~more~ power on the same displacement... so they generally used a bit smaller displacement on the gas engines for the same model tractor so as to keep the power level the same. I suspect that peak torque for a given displacement WAS the same but the spark engines were probably a bit more top ended on power which is why they made a bit more....
So as it applies to the previous arguement... I think if you had a direct injected spark ignition engine built to diesel specs... with a turbo... you'd probably get pretty similar performance to a diesel engine... and mabey even close to the efficiency we've known from diesel's.
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 ]
Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
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.