Autolite spark plug question

Charlie M · May 20, 2012

When I got my A last fall it had Autolite 386 plugs. I'm not familiar with Autolites as the rest of my tractors have Champions. I was just wondering what the equivalent Champion is to an Autolite 386. I don't have a reason to change them - just want to know what I have.

The Red · May 20, 2012

That would be a Champion D21. I gave up with the Champions 10 years ago. I use the Autolite 386 in my Hs and Ms now.

Bouncer · May 20, 2012

Do yourself a favor and keep the Autolite plugs in it. Myself, I prefer to use 3116 which is equivalent to the heat range of the 386 but is non a resistor plug.

The Red · May 20, 2012

Thanks Bill, I will jot that down. Been 10 years since I bought 386s.

the tractor vet · May 20, 2012

Bouncer i am TRYEN something different at this time .I jumped ship on the Autolites . I put a set of NKG's in the 706 , now due to CRS i can not remember the number they are COLDER then the 3116's . This past week the 706 has had it's bag worked Did all the corn planting on one tank of fuel running first high pulling a 7000 JD 4 row no till with dry fertilizer at 4.5 mph over 74+ acres , mowed 45 acres of first cutting up and down some rough ground with the worst yet to come. Sofar it has been running good .

Bouncer · May 20, 2012

NGK is a very good plug. I have ran them in vehicles before, and my buddy runs them in his JD A pulling tractor. Just for an FYI, Autolite now has out two series above the standard plug. Think of them as good, better, and best. I just bought a set of the top line "best" for my wife's car. Haven't got them in yet, but they get great reviews on several discussion boards. They have a electrode made of something different that is supposed to conduct better and hardly wear. They were about $9 a piece.

Stuart · May 20, 2012

We use to pull a 4 row 7000 Deere with dry fert. with a 450 gas at 4.5 mph. Didnt work it to much.
Use to plant 300 acres that way.

David G · May 20, 2012

I have 386 in the H farmall, work fine.

uncle henry · May 20, 2012

i got autolite 386 in my tractors been running them for over five years with no problems yet

Ken Ind. · May 21, 2012

I have always used champions and had very good luck with them. The champ equel would be a d21 . If you are plowing or doing heavy feild work with I would use a d17. The autolite works well in the ford stuff but always have used champs.in my Ih stuff and my Case stuff also. I put them in my Allis and the old girl starts a lot better then th autos.Kenny

kopeck · May 21, 2012

(quoted from post at 10:12:20 05/20/12) Bouncer i am TRYEN something different at this time .I jumped ship on the Autolites . I put a set of NKG's in the 706 , now due to CRS i can not remember the number they are COLDER then the 3116's . This past week the 706 has had it's bag worked Did all the corn planting on one tank of fuel running first high pulling a 7000 JD 4 row no till with dry fertilizer at 4.5 mph over 74+ acres , mowed 45 acres of first cutting up and down some rough ground with the worst yet to come. Sofar it has been running good .

Interesting. I've used NGKs in all my 2-Stoke engines for as long as I can remember and they're been very good plugs.

I might have to cross them and give them a try in one of my tractors. The champions seemed to foul very easily, I've been running Autolites for years and they've worked pretty well for me.

K

karl f · May 21, 2012

tractor vet,
probably NGK AB6.
Same as a late 60s Rotax.
I like the reduced size head for the tight spark plug spaces on the smaller farmalls.
karl f

Autolite spark plug question

Charlie M

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The Red

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Bouncer

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The Red

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the tractor vet

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Bouncer

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Stuart

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David G

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uncle henry

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Ken Ind.

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kopeck

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karl f

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