Well while waiting for John T to get on and answer, I will make a feeble attempt. On a coil/bat ignition system,I don't think it makes a diff as long as they are in good condition,in other words compare new to new. Now on a magneto ignition , which is probably what the posts you are referring to are talking about , there is no external power source feeding the coil and magnets have a finite amount of power that cannot ramp up just because a resistance is sensed as the other can. Therefore , any resistance between the mag and plug (including the plug itself) will affect the power to make spark. A coil/bat system has plenty of reserve and way more power than it needs to overcome resistance and actually make a hotter spark because of it. Not so with a magneto on the old tractors. A magneto on a nitro burning dragster was designed to fire a mixture of "syrup" and alcahol under extreme pressure conditions but these old tractor mags don't need and don't like resistance. I'm sure John "T" will chime in with the real answer.
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
... [Read Article]
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.
