With the increase in oil consumption, some blue smoke on start up, and a bit of bronze in the oil filter, I'd have to go with valve guide/seal wear. Rocker arm bushings are brass, but that and the pin bushing are brass but would not result in greater oil consumption(change). To be more specific, most likely exh valve guides as intake guide wear would draw the brass into the combustion chamber, and most of it would exit the engine after firing. Also, exh valve guides run quite a bit hotter, and are the most wear-prone item on an internal combustion engine.
Validating exh guide wear is not difficult. Remove the rocker arm from the engine. Remove one spark plug from that side. Insert about 12" of poly rope into the cyl, leaving about 4" with a knot sticking out. Gently move the crankshaft around BY HAND to compress the rope in the cylinder, and keep the valve from dropping into cyl. Remove the keepers and retainer from the top of the exh valve. Remove the spring(s) from the exh valve. Wobble the top of the exh valve from side to side. There should be very little play. Watch the top of the guide seal as it is moved(this replicates the action of the rocker on the valve.
If you have wobble on the valve when moved around by hand, that is a guide failing and the seal unable to maintain integrity with the valve stem. Remediate by removing the head, and having the exh guides, seals, and valves replaced with new, then grind the seats to the correct chamfer angle(s) of the new valves.
Upload one or more videos to your post. Photo and video filesizes should be less than 8MB. 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 - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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.
