Unless you plan to also convert over to an electronic ignition switch, as long as you"re using original points and condensor system, I doubt you will notice much if any improvement using a so called HV coil, Id stay with a stock. The so called HV coil does NOT fire at any higher voltage if the compression and plug gap remain unchanged, its only that it has the ability/capacity to do so if compression is raised and/or the plug gap is increased. The stock coil will achieve sufficient voltage to arc jump a gap of 0.020 (and less) to 0.040 (and likely more) unless you raise the compression dramatically, and a gap of 0.020 to 0.030 is in the range of where youre likely at anyway.
Id look at the compression on that weak cylinder and/or the valves and their lash before I tried a whole lot of ignition improvements. If a weak cylinder is low on compression or burning excess oil (rings or valve guides/seals etc.) a hotter ignition wont cure that, it will just increase the time before the plug eventually fouls out.
The ignition is more efficient if the coil is at the correct polarity to match the tractor battery, i.e. for a Pos ground the coils + goes to distributor while for a neg ground the coils - goes to distributor, you may wanna check that
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 Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
... [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.
