Posted by Jim Becker on September 12, 2011 at 16:42:35 from (173.57.144.251):
In Reply to: First hemi?? posted by Bud DeLong on September 12, 2011 at 10:15:16:
Quoting Removed, click Modern View to see
Makes absolutely no difference in that respect. The various pressures, amount of surface area, and force directions all balance out. You get the same push as a flat top piston.
Where it does matter is in the quality of the combustion. The coldest part of the combustion chamber is at the surface. Combustion is best where it is hottest. A spherical shape has the greatest ratio of volume to surface area. A hemisphere comes closer to that ratio than most other combustion chamber shapes. The old Chrysler hemis had a more or less spherical shape to the chamber in the head, with flat top pistons, thus the "hemi" name. This idea is somewhat theoretical and other shaped combustion chambers with carefully designed quench areas do quite well.
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 - Gettin My Old Tractor Home - by Clayton Sweeney. My name is Clayton Sweeney. I am from Southern Maryland in a small town called Lothian. I am 20 and my father and I are the proud owner of a 1954 Allis Chalmers WD-45. When I was 18, I dated a girl in the next county over. Her family are tobacco farmers. It was a cold Thanksgiving evening, and we were going up to her Grandparents house. As we passed one of their barns, I noticed something orange in the corner of my eye in this old shed. It was pretty dark and I asked what it was
... [Read Article]
Latest Ad:
1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
[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.
