Advice on Spark plug Type For Super A

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
5+ Years
5+ Years
Posts: 26
Joined: Tue Jun 15, 2010 8:01 pm
Zip Code: 12589
Tractors Owned: 1953 Farmall Super A
1974 Cub Cadet 169
1951 David Bradley
1955 David Bradley
1959 David Bradley Suburban

Advice on Spark plug Type For Super A

Postby Popeye » Sat Jul 16, 2011 6:51 pm

Hi guys, I am in need of your input / opinions on what is the BEST choice of Spark Plugs for my 53 farmall super A tractor. FYI : it is all original, 6 volt positive ground wiith a Magneto Ignition system. USE : I Do NOT use the tractor much at all, start it up maybe once a week run it for a couple of hours. However in the winter I do use it more with My Buzz saw and loader. I am now running D16 Champion Plugs and am not happy with the way it starts and don't believe I'm getting a good hot spark. All of the Ignition componants are Like NEW. I have been told by some that champion plugs do NOT do well in farmall tractors and that i should change to Autolite or AC plugs. I am also being told by some that because of my minor use of the tractor and the fact that it is a Mag system that i should use a Hotter Plug. Well, now I'm a little confused and so, before i go buy new plugs i figure let me ask you guys for your expert advice. Info on what type & # plugs to or NOT to use would be Great. thanks, DanO'
"I Yam What I Yam"

"Life is a Short Trip, You Don't Need Baggage" DOC

5+ Years
5+ Years
Posts: 218
Joined: Thu Nov 12, 2009 1:36 pm
Zip Code: 61272
Tractors Owned: Tractors

1940s Allis Chalmers B
1966 140


1950 Buick Special
1964 Cadillac
1955 R190
Location: New Boston IL

Re: Advice on Spark plug Type For Super A

Postby josys36 » Sat Jul 16, 2011 7:31 pm

I have always had good luck with Champion D21s. That is what is in my Super A, and what I have installed into my 140. Tractor runs great, and if things are properly tuned you should have no issues. I pulled out my plugs on my super A at the beginning of this season and they looked just fine. I installed them last year.

"Beauty through function and simplification."
"Raymond Lowey"

User avatar
5+ Years
5+ Years
Posts: 2208
Joined: Fri Sep 10, 2010 5:23 pm
Zip Code: 39861
Tractors Owned: 76 Cub Denim Springs
49 Cub Denim Springs
51 Cub
"Jacksonville" 53 Cub
"Jackson" 76 Cub
"Louie" 64 Cub Fast Hitch
"Paw Paw"71 Cub Fast
"Alvin" 72 Cub
"Ugly" 75 Cub
76 Cub Val
Mr. Kirkland" 77 Red Cub
77 Cub "Russell
76 Cub w/fast hitch "Edgar"
76 - 185 Cub Lo Boy
John Deere 2003 - 5320
Circle of Safety: Y
Location: Jakin Georgia

Re: Advice on Spark plug Type For Super A

Postby Tezell » Sat Jul 16, 2011 7:46 pm

I have been running Autolite 3116's in my stuff and I just recently put in a set of Champion D21's. So far so good. I can say that my tractor cranks better right now than it ever has. I guess there is something to the "hot plug" theory. Just my 2 cents worth.
"I ain't believing this!"

User avatar
Don McCombs
Team Cub Mentor
Team Cub Mentor
Posts: 13232
Joined: Mon Feb 03, 2003 6:45 am
Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: Advice on Spark plug Type For Super A

Postby Don McCombs » Sat Jul 16, 2011 10:05 pm

I use D21s in all my Farmalls.
Don McCombs
MD, Deep Creek Lake

Proud Member of Maryland Chapter 39

john nussbaum
10+ Years
10+ Years
Posts: 112
Joined: Sun Sep 09, 2007 3:24 pm
Zip Code: 44270
Tractors Owned: 54 farmall 400 60 oliver 770 two 49 cubs, 52 ford 8n
Location: rittman ohio

Re: Advice on Spark plug Type For Super A

Postby john nussbaum » Sun Jul 17, 2011 9:57 pm

d-18y or d-21

Daniel H.
10+ Years
10+ Years
Posts: 608
Joined: Mon Feb 03, 2003 1:18 pm
Zip Code: 27055
Tractors Owned: 1951 Super A
1955 Cub Lo-boy
1955 Ferguson TO-35
Circle of Safety: Y
Location: NC, Yadkinville

Re: Advice on Spark plug Type For Super A

Postby Daniel H. » Mon Jul 18, 2011 8:16 pm

I don't know about others, but the only plug I can use in my Super A is a Champion (D21) because the space around the plug is too tight for a regular, even thin-wall, socket to go in deep enough to grab the hex on the plug. The hex sets higher on the Champion and the wrench will reach it. On the AC and Auto-lite the socket will not go in deep enough to grab it. My Super A is a 1951 and on my 1955 Farmall 100, I don't have this problem, so IH must have changed the head some between them.
The four most expensive words in tractor restoration: "We might as well..."

User avatar
Cub Pro
Cub Pro
Posts: 28706
Joined: Sun Feb 02, 2003 8:37 pm
Zip Code: E1A7J3
Skype Name: R.H. "Rudi" Saueracker, SSM
Tractors Owned: 1947 Cub "Granny"
1948 Cub "Ellie-Mae"
1968 Cub Lo-Boy
Dad's Putt-Putt
IH 129 CC
McCormick 100 Manure Spreader
McCormick 100-H Manure Spreader
Post Hole Digger
M-H #1 Potato Digger
Circle of Safety: Y
Twitter ID: Rudi Saueracker, SSM
Location: NB Dieppe, Canada

Re: Advice on Spark plug Type For Super A

Postby Rudi » Mon Jul 18, 2011 9:28 pm

My buddy Gord used Champion D-21's in his Super A and I think in his H as well as in his Cub.
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship

Gary Dotson
Team Cub Mentor
Team Cub Mentor
Posts: 3059
Joined: Thu Aug 03, 2006 6:20 am
Zip Code: 43358
Tractors Owned: 48 Cub Diesel (Cubota)
53 Cockshutt 20 restored (Shooter)
52 Cockshutt 20 unrestored
47 Leader "B" (Herckie)
49 Leader "D" (Princess)
49 Leader "D" very rough
48 Leader "D" unrestored
Kubota B6200E
Kubota B6200HST
Kubota B8200HST-D
Circle of Safety: Y
Location: OH West Mansfield

Re: Advice on Spark plug Type For Super A

Postby Gary Dotson » Tue Jul 19, 2011 7:00 am

For light duty & winter time use, you'll be happier with a hotter plug. The D-21 Champion is a good choice but I'm not brand loyal so choose the brand of your choice.

User avatar
Bus Driver
Team Cub Mentor
Team Cub Mentor
Posts: 2917
Joined: Sat Feb 11, 2006 5:26 pm
Location: NC

Re: Advice on Spark plug Type For Super A

Postby Bus Driver » Wed Jul 20, 2011 3:29 pm

The tractors are older with typically worn engines and few have newly rebuilt engines. Few are used for hard work now. The hotter plug is really needed.
Luck favors those who are prepared

  • Similar Topics
    Last post

Return to “Farmall A, Super A, AV, 100, 130 & 140”

Who is online

Users browsing this forum: No registered users and 1 guest