boberjagel
Member
Do you pull knob out to over ride stop on throttle lever and give it full throttle to get true test on dyno?
- Thread starter boberjagel
- Start date
Dieseltech
Well-known Member
- Location
- Akron, Indiana
From the M&W Gear chart, late diesel 4020 Power shift with 1000 RPM shaft, engine no load 2410 RPM for 1272 PTO, engine full load is 2200 for 1161 PTO, 95.8 HP. The late diesel 4020 synchro is engine no load 2380, PTO 1256. Full load 2200 engine, 1161 PTO, 94.9 HP.
If using the six spline shaft the no load speed should be about 610 PTO, and loaded down to 540 and reading taken there. The engine checked at 1900 RPM the PTO HP will be slightly less than the M&W Gear chart.
If using the six spline shaft the no load speed should be about 610 PTO, and loaded down to 540 and reading taken there. The engine checked at 1900 RPM the PTO HP will be slightly less than the M&W Gear chart.
Traditional Farmer
Well-known Member
- Location
- Virginia
Check the dyno(LOL)
BarnyardEngineering
Well-known Member
- Location
- Rochester, NY
Curious, wouldn't a "true test" be one that mimics operating conditions? You don't run the tractor in the field with the knob pulled out, do you?
Who cares if the tractor makes 216HP with the knob pulled out? You're never going to use it because the knob is pushed in and the tractor is only making oh let's say 92HP.
Tx Jim
Well-known Member
- Location
- Coyote Flats, Texas
OOPS double edit
This post was edited by Tx Jim on 08/05/2021 at 05:38 am.
This post was edited by Tx Jim on 08/05/2021 at 05:38 am.
Tx Jim
Well-known Member
- Location
- Coyote Flats, Texas
I'll bet smoke coming out of muffler on a 4020 @ 115 HP resembled smoke from old freight train engine.
My limited experience watching tractors being dynoed yrs ago is the dyno operator can ""within limits"" show whatever HP they choose.
Nebraska test shows '69 4020 @ 95.93 HP/2200 rpm's
This post was edited by Tx Jim on 08/05/2021 at 05:35 am.
(quoted from post at 05:11:40 08/05/21)
I'll bet smoke coming out of muffler on a 4020 @ 115 HP resembled smoke from old freight train engine.
My limited experience watching tractors being dynoed yrs ago is the dyno operator can ""within limits"" show whatever HP they choose.
Nebraska test shows '69 4020 @ 95.93 HP/2200 rpm's
This post was edited by Tx Jim on 08/05/2021 at 05:35 am.
If you had 10 PTO dynometers and tested the same 1 tractor on all 10 dynos you'd likely get 10 different readings.
PTO Dynos are like oscilliscopes, both expert and novice alike can make it read what they want it to read.
For purposes of comparison they have a use but they're not a very good way to get a true measurment of actual horsepower.
Traditional Farmer
Well-known Member
- Location
- Virginia
My Italian built Long would take that 4020 to the cleaners(LOL)
Similar threads
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.
Copyright © 1997-2024 Yesterday's Tractor Co.
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.
Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy