Favorite spark plug

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Anonymous-0

Well-known Member

• Jan 23, 2014

• #1

What's your favorite spark plug for the old letter series
Farmalls. Less fouling with today's gas and show/parade
tractors with limited use.

 

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FBH44

Well-known Member

• Jan 23, 2014

• #1

I tried to find the hottest plug I could for my 1950 "H" parade / chore tractor. Lately I have been running Autolite 388"s, set at 0.030" to 0.035" or so, with permium gas and Seafoam, and I open her up and run her hard every so often. Based on old timer"sa advice at CNH dealer. seems to work, I guess, but I have never known what actually makes a plug "HOT". Is it the thickness or thinness of the electrode, or something else??? dunno.

 

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NEsota

Member

• Jan 23, 2014

• #1

In operation the tip of the plug, where the spark is, is the hottest part of the plug. The coolest point is where the plug screws into the head or block. More heat is conducted from the hot tip of the plug to the cooler part when the distance is short and conduction of heat is high. This is a cool plug. Plug construction is the opposite on a hot plug

 

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littlered1

Member

• Jan 23, 2014

• #1

I have been advised to run a hot plug and do so. Not sure what I am running presently. I like and use Seafoam. Why do you run premium gasoline in a low compression engine? I have done this too and don't really notice any difference. I use non-ethanol regular with good results / performance.

 

Red Dave

Well-known Member

• Jan 23, 2014

• #1

Autolite 3116's and copper plug wires if you have a magneto.

Autolite 386 or 387's for a battery ignition.

 

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D beatty

Well-known Member

• Jan 23, 2014

• #1

I use Autolite in every thing that I can get a cross match on and the ones I can't I use Champion. I use seafoam and if I'am going to work the hell out of it use Marvels Mystery oil in fuel. I will from time to time run a tank of permium through them. Had mechanic years ago tell to switch back and forth on octanes to help snap carbon.

 

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Denny ('60 Lo-Boy)

Member

• Jan 23, 2014

• #1

(quoted from post at 09:33:42 01/23/14) What's your favorite spark plug for the old letter series
Farmalls. Less fouling with today's gas and show/parade
tractors with limited use.

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Champion D-21's or it's equivalent in another brand.

 

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Owen Aaland

Well-known Member

• Jan 23, 2014

• #1

Here are a couple links that deal with spark plugs and heat range.

http://www.ngk.com.au/spark-plugs/technical-information/heat-range-explanation

http://www.briskusa.com/technical-info/heat-range/

 

Al L. in Wisc.

Well-known Member

• Jan 23, 2014

• #1

Farmall A Tractor; an older tractor mechanic turned me on to this brand and they work, no ifs; ands' or buts'!

12/19/2013 I ordered 10 of the 4-H that I can use in my Farmall 340 and or 460. Poke below for Aldor spark plugs.

http://aldorsparkplugs.com/index_eng.htm

 

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Pappy

Well-known Member

• Jan 23, 2014

• #1

Read what Red Dave has to say. He has it all figured out. That"s what I use and have never had a problem.

 

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OP

A

Anonymous-0

Well-known Member

• Jan 23, 2014

• #1

Why not 3116's with a battery ignition?

 

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504

Well-known Member

• Jan 23, 2014

• #1

Anything except the spark plugs Dad would have used,Champion; the last set I bought lasted three days, the A/C in it now have been there ten years.

 

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JarettB

New User

• Jan 23, 2014

• #1

Autolite 3116's !!

 

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teddy52food

Well-known Member

• Jan 24, 2014

• #1

I don't know. That is what I put in my super C after the D18Y champions fouled out.

 

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Roger46

Member

• Jan 24, 2014

• #1

Spark plugs are like oil. Everyone has their opinion on what is best, usually not based on any data other than based on what they have convinced themselves is best.

 

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luv2wrench

Member

• Jan 24, 2014

• #1

ac 87 plugs

 

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Patrick HMD

Member

• Jan 24, 2014

• #1

Another vote for the 3116's. My 'M' has 6 volt mag ignition w/ cutout, starts easy, and runs like a top. Old school baby. lol I have no desire to change anything. Perfectly satisfied.



Best regards
Patrick
'49M

 

rustred

Well-known Member

• Jan 25, 2014

• #1

well for parades and putzing around you need a hotter plug than factory spec. I use mostly all champions as they have more meat in the thread area than the autolites. found this out when had autolite twist off in the hole. I have found defective plugs in both types and do not really notice anything greater in the autolites. any plug will foul up when the engine never reaches operating temperature. also these old tractors came with champion plugs.

 

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Jim Becker

Well-known Member

• Jan 26, 2014

• #1

(quoted from post at 10:53:10 01/25/14) . . . also these old tractors came with champion plugs.

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nd ACs, maybe others.