Welcome! Please use the navigational links on your left to explore our website.

Company Logo (800) 853-2651 Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Kountry Life
Allis Chalmers Discussion Forum


Welcome Guest, Log in or Register
Author  [Modern View]

07-29-2009 18:49:26

Report to Moderator

In a compression test with all 4 spark plugs removed, is 90 PSI good or what? What is a good compression test? It ranges from 90 to 95. and i know that is good. Not so sur about 90 lbs though

[Log in to Reply]   [No Email]
John Harmon

07-31-2009 06:01:46

Report to Moderator
 Re: WD-45 in reply to rowdy33, 07-29-2009 18:49:26  
Does it have a miss,smokes a little? If not At 90PSI I would think blowby and rings goeing away but probably not any time real soon and not real bad for an old Engine. If you do not run it to do a job but only for amusement as I suspect, I would get some "Engine Restore",install as OLD says [credit] 40 wt OIL if you can find some or 20/50 if not and the "Engine Restore" and have fun.I've used Engine Restore for many years on old engines and have not been disapointed by the increased Engine life it contributes.

[Log in to Reply]  [No Email]
Tramway Guy

07-30-2009 07:39:52

Report to Moderator
 Re: WD-45 in reply to rowdy33, 07-29-2009 18:49:26  
Are you sure it's a WD45 and not an 'imposter'; like a WD with'45 decals or a WD45 with a WD engine??
Does it burn oil, and/or is there a lot of 'blowby' from the crankcase breather?

[Log in to Reply]  [No Email]
Will Herring

07-30-2009 06:13:46

Report to Moderator
 Re: WD-45 in reply to rowdy33, 07-29-2009 18:49:26  
Just out of curiosity...

1. What should compression be on an early and a late model WD?

2. Do you need a complete engine rebuild to fix compression issues?

3. What causes bad compression? Bad seals? Worn engine metal? Stuff wearing out?

[Log in to Reply]  [No Email]

07-30-2009 08:10:36

Report to Moderator
 Re: WD-45 in reply to Will Herring, 07-30-2009 06:13:46  
I like no less than 300 psi but i dont farm with mine .I just play with it at pulls.

[Log in to Reply]  [No Email]

07-29-2009 21:25:32

Report to Moderator
 Re: WD-45 in reply to rowdy33, 07-29-2009 18:49:26  
That be about as low as you would want. One like that can last a long time if you run a 30W/40W or 50W oil in it and keep an eye on things

[Log in to Reply]  [No Email]
Texas Denny

07-29-2009 21:02:30

Report to Moderator
 Re: WD-45 in reply to rowdy33, 07-29-2009 18:49:26  
It isn't great and you will be down a bit on power. However, if you are not in competition, it will probably give you years of reliable service. Problems with low compression are starting and plug fowling. If it starts good and the plugs don't fowl, you don't need to rebuild now.

[Log in to Reply]  [No Email]
stu (ON)

07-29-2009 19:08:32

Report to Moderator
 Re: WD-45 in reply to rowdy33, 07-29-2009 18:49:26  
Service Manual specifies WD45 at 130 psi.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

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 ]

Home  |  Forums

Today's Featured Article - Tractors and Winter - by Staff. Unfortunately, tractors and winter don't mix well. It seems that I can start out with my tractors in great running condition but sometime during the long cold dark winter they quickly revert to the lawn-art category. The lack of running, cold weather, and admitted neglect all take their toll on a machine. If you are lucky enough to not need your tractors during the winter months you can perform a few simple maintenance items to winterize and come spring have them going by reversing the process. If you need your tractor in ready-to-run condition (like that ... [Read Article]

Latest Ad: want to buy open station platform and fenders for 4430 john deere, needs to be in good condition . [More Ads]

Copyright © 1997-2021 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