Your manual is quoting distributor rpm and not engine. Therefore the 20 degree advance at 800 rpm would be equivalent to 40 degree advance at 1600 rpm. That 40 degree advance was for the original cast iron piston with standard bore. If you have installed a thin wall sleeve and aluminum pistons the degrees drop to 30 degrees at full advance at engine. If you have a high alt piston or fire crater the advance continues to drop to close to 22 degrees. Over advance causes detonation and lack of power with damage to pistons. If you adjust a 40 degree advance distributor to have 30 degrees at full throttle you of course will be late at low speed and not run freely. You can take the distributor apart and fill in the hole in plate that controls maximum advance and then play with the springs by curling the ends to get close to what ever advance gives you the best performance. It takes trial and error. You can get different distributor shafts and correct springs for that shaft also if you want to go that route. I have no idea what pistons you have so can't say what advance you actually need.
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 - Tractor Profile: Allis-Chalmers Model G - by Staff. The first Allis-Chalmers Model G was produced in 1948 in Gasden, Alabama, and was designed for vegetable gardeners, small farms and landscape businesses. It is a small compact tractor that came with a complete line of implements especially tailored for its unique design. It featured a rear-mounted Continental N62 four-cylinder engine with a 2-3/8 x 3-1/2 inch bore and stroke. The rear-mounted engine provided traction for the rear wheels while at the same time gave the tractor operator a gre
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[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.
