They all have a TDC mark on the crankshaft pulley. Some also have marks to 50 degrees and some do not.
#1 cylinder when cranking is supposed to get spark when the pulley is at 5 degrees BTDC (before top dead center). That's when it's on the compression stroke. Easy to tell. Just loosen a spark plug and when it hisses because air is coming out - it's on the compression stroke.
If you have an engine with a crank pulley NOT fully marked, you can mark it yourself with a tape measure.
Points get set at .014" in your Lucas distributor. Static/initial timing is 5 degrees BTDC. Full advance is 39 degrees BTDC at 2200 RPM. Timing marks are on the crankshaft pulley. If your's only has the TDC mark and no 5 degrees BTDC? 5 BTDC is 9/32" before the TDC mark. 39 degrees BTDC will be 2 7/32" from the TDC mark.
When the engine is at 5 degrees BTDC, you can time without a timing light if you want. With power on, just loosen and rotate the distributor in the normal direction of travel - then back slowy until #1 wire sparks.
If you get working on your VN or VNN Zenith carb - keep in mind it is a British Zenith and has nothing to do with USA Zenith carbs.
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 - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
... [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.