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

Company Logo 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
Tractor Town
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
Today's Tractors
Garden Tractors
Kountry Life
Ford 9N, 2N & 8N Discussion Forum

spark plug torque

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

09-10-2019 13:06:33

Report to Moderator

Spark plug torque for 43 2n? I don't see a search option. Perhaps someone could point out how to find it.

[Log in to Reply]   [No Email]

09-13-2019 04:34:58

Report to Moderator
 Re: spark plug torque in reply to howardusa, 09-10-2019 13:06:33  
Quoting Removed, click Modern View to see

Please note that the man said he used a spark plug socket with external flats for a 3/4" wrench. Nothing about the AF dimension of the plug.


[Log in to Reply]  [No Email]
Tim PloughNman Daley

09-13-2019 03:44:28

Report to Moderator
 Re: spark plug torque in reply to howardusa, 09-10-2019 13:06:33  
FORD nomenclature denotes the spark plug wrenches for all vehicles to be part number 17017. It is the prefix and/or suffix which defines the module first used on. Shown here are all the correct Ford tractor offset sparkplug wrenches with the 01A-17017-B wrench at bottommost four. These were often called the 'suitcase handle wrench' for their resemblance to a suitcase handle. These were used in all flat head Ford toolkits. The 14mm Champion spark plug size is 13/16 AF (Across Flats) not 3/4 as noted. The 01A-17017-B wrench is perfect for getting to your plugs.


Tim *PloughNman* Daley(MI)

[Log in to Reply]  [No Email]
Mad Farmer

09-11-2019 06:24:34

Report to Moderator
 Re: spark plug torque in reply to howardusa, 09-10-2019 13:06:33  
What these guys said is solid advice.

Tighten it down until you feel the gasket crush, used plugs just good and snug.

With new plugs I'll put a small dab of never seize on the threads.

In the toolbox I keep a plug socket that has the hex flats for a 3/4" wrench on it (have an adjustable in tool box), it's easier than getting a ratchet on plugs 2-4. Plug 1 is the most PITA to remove/install. I also keep a length of tubing in toolbox (gas line size), I use to blow the crap out around the plugs (by mouth) before removing.

I have been using autolites 437 but the finish quality has went down, I'm trying out some NGKs now and they are nickel plated and don't rust up like the autolites NGK 3112 (B-4l).

[Log in to Reply]  [No Email]

09-11-2019 03:48:25

Report to Moderator
 Re: spark plug torque in reply to howardusa, 09-10-2019 13:06:33  
While spark plug torque isn't critical on older tractors it is important on newer vehicles. I pass this chart out to my students when we cover vehicle maintenance because they, being new techs, don't understand how tight to get spark plugs. I am not suggesting this is the case here, but wanted to pass this information along to anyone that needs it. Here is the link. https://www.autolite.com/docs/default-source/tech-specs/understanding-spark-plugs/torquespecs.pdfhttps://www.autolite.com/docs/default-source/tech-specs/understanding-spark-plugs/torquespecs.pdf
I hope this helps.

[Log in to Reply]  [No Email]
Tim PloughNman Daley

09-11-2019 00:47:03

Report to Moderator
 Re: spark plug torque in reply to howardusa, 09-10-2019 13:06:33  
I have never heard of anyone torquing their plugs. Hand tighten 1/8 to a 1/2 extra turn to secure. OEM Spec is 25-30 FT/LBS. Here's the thing. When removing a spark plug, always blow out the socket wells with compressed air to remove dirt and debris before pulling out. Use a 13/16 6-pt socket or the OEM FORD 01A-17017-B offset sparkplug wrench -it was made for the flat heads. Gap new plug to .025"-.028" and start by hand always. OEM FORD TRACTOR spark plugs spec'd as: 14mm Champion H-10. Since then, Champion released a hotter plug, the H-12 and an alternative is the AUTO-LITE 437 plug. Both are equally as good. Some fellas claim allegiance to one brand or the other, say one is better than the other, but that is their opinion and not based on facts (how does one gauge/measure performance?) and their choice. I've found BOTH are EQUALLY good and I've never had any issues with using either or. I buy whatever brand my store has in stock. The industry today, in their infinite wisdom, has decided to re-number the plugs. The Champion H-12 is also listed as the 512 plug and the AUTO-LITE 437 is also listed as the 216 plug so if your store can't find your original number, try one of those. BE ADVISED: The plug thread size is 14mm x 1.25mm -that's METRIC for those who don't know, and fine thread pitch size and attempts to chases the head plug threads with anything different will result in boogered up threads and a ruined head. There's no need to retap or chase the head plug threads anyway. A gentle air blast at insertion will clear any debris. If you have difficulty inserting a plug, you are either cross threading it or have a rusty plug thread. Try using a new plug to chase the thread with or a legitimate 14mm x 1.25mm plug tap. ALWAYS HAND START AND TIGHTEN PLUGS. Get plug fully seated by hand then a 1/8 turn to 1/2 turn or so by wrench to tighten. DO NOT OVERTIGHTEN. NO NEED TO TORQUE. Torque is often used a lot unnecessarily and often misunderstood anyway. Do you know what IN/OZ; IN/LB; FT/LB; and Newton Meters are? Do you know how to convert if your scale doesn't have the range you want? Leave the torque wrench in you box for bearings and heads and such. This is my method, my advice to others, but...

...your mileage may vary...

Tim *PloughNman* Daley(MI)

[Log in to Reply]  [No Email]

09-10-2019 13:18:27

Report to Moderator
 Re: spark plug torque in reply to howardusa, 09-10-2019 13:06:33  
Quoting Removed, click Modern View to see

Not really tractor specific. For gasketed plugs with 14MM threads in a cast iron head Champion recommends 25-30 lb-ft. Most people simply get them hand tight and then a partial (3/8-5/8 ) turn with the wrench sufficient to crush the gasket. You will feel the resistance go up substantially as soon as the gasket is crushed.


[Log in to Reply]  [No Email]

09-10-2019 13:44:18

Report to Moderator
 Re: spark plug torque in reply to TheOldHokie, 09-10-2019 13:18:27  
Thank you. That's the method I have used on autos for the last 60 years. Just didn't know how sensitive/specific the old girl was.

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

Hop to:

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). We have the parts you need to repair your tractor - the right parts. Our fast shipping, low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums

Copyright © 1997-2019 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