Posted by Leroy on March 04, 2022 at 07:07:03 from (98.30.20.69):
In Reply to: Re: 50A rebuild posted by miangus on March 04, 2022 at 06:03:38:
Is the pistons that were in the tractor that the one broke a cast steel and is the one you got aluminm? I am guessing that the one that broke is a cast piston for an all fuel tractor as the all fuel is a very low compresion and for a gas tractor the pistons are taller for more compression and higher horsepower. Then the aluminm pistons are for higher compression yet and are aftermarket. If what you got is the aluminm I would try to get the mate to it and instal them IF the diameter is correct as you have to figure out if the block has been rebored and if it has is it 45 over,90 over and that is all Deere made for that tractor but the after market aluminm pistons could also be 125 over size. So first thing is was the block ever bored, they do not use sleves. Then if overboard is it the 45, 90 or 125? And then is it an all fuell tractor or a gas tractor. If either an all fuel or a gas those taller pistons will work IF the diameter is correct But the pistons do have to be replaced in pares if different than what you took out. I had both a 49 B and a 51 A both gas tractors and they were rebored but I forget the exact size over bore but at that time the B was reboard Deere did not make a piston large enough for the over bore so all was left to do was the aftermarket extra high compression pistons. Without checking my parts books I am sure the crank is the same for either gas or all fuel as stroke is the same on both. Just different piston height. The all fuell tractor had a 29 PTO HP, the Gas 38 PTO HP and the higher compression aftermarket aluminum pistons were never tested at the test site but I am guessing they would put the power to around 45PTO HP. Sleves could be had but rare to install in a block that was totally dammaged beyond the oversize pistons but not done unless a replacement block could not be found. But then there is the POWER BLOCK option that was entirely different on piston size being if I remember correctly a half inch bigger in diameter and also still a higher compression. Your 1950 A could have been a gas tractor but still have had the extra fuel tank like a all fuel tractor. The 51 only had one tank and it was larger that the tractors with the 2 tanks.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. 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 - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
... [Read Article]
Latest Ad:
1945 Farmall wide body gas with pto and front plow. Runs good but needs new points.
[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.
