In the case of the 4255, rated rpm and the engine rpm required to attain 540 and 1000 rpm are all the same, according to the Nebraska test. The picture tells me nothing. HP available at the PTO, with the PTO spinning 540 or 1000rpm and HP available at the PTO while the engine is at rated speed are two different things, although in this case (4255) they are the same. In the case of the 4020, the two are different at 1000PTO rpm, and we have no proof one way or the other, except for tractordata, at what engine speed 540PTO rpm is acheived at. I'd love to see a picture of a 4020 diesel tach. It's unusual for 1000PTO rpm to occur at an engine rpm lower than 540PTO rpm occurs.
Let's look at another example. Allis 190XT/200. Considered a 93PTO HP tractor. It makes 93.64 HP at 2200 engine rpm. At 540 PTO rpm(1937 engine rpm), it makes 89.71 HP. TWO DIFFERENT NUMBERS, although they will cross at times.
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 - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
... [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.
