Posted by jdemaris on October 04, 2010 at 10:02:50 from (67.142.130.45):
In Reply to: Re: Lead addatives posted by Kruse on October 04, 2010 at 09:45:12:
I don't know what the guy has, but many if not most older tractors will last longer with lead additive, IF used like real farm tractors - which I assume rarely happens anymore. Valve recession happens when a tractor is run hot and hard, all day, and has no hardened valve seats. Also, those that have had valve-jobs in the past 20 years might have been upgraded with hard seats anyway.
I can't give a specific list, but I used to do a lot of valve work on pre-1960 tractors (still do some). Very few came OEM with hardened valve seat inserts (that don't suffer from recession). Obviously, some did, but it was not standard.
I just did a valve job on an late 50s Oliver with a Hercules engine - and it has NO seat-inserts. Also just did a Deere 1960 1010 and a 1966 350, and again . . no inserts. Also recently did a Ferguson 1959 TO35 with a Continental Z-134 and it also had no seat inserts. I've also know that my Case DCs, VACs, and 530 also do not have hardened seats. My Shaw tractor with a Wisconsin engine does have them OEM.
Seems the question should be which ones did, instead of which ones did not. I know many Ford engines had them. Many air-cooled engines also had them. Not sure what else.
There were controlled tests done on many no-hard-seat engines run on unleaded gas - and there is NO doubt they suffer when used hard and long. But, when used part-time, it's not an issue.
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 - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
... [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.
