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Hotter spark plug

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Bob Reineke
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PostPosted: Thu May 02, 2013 9:46 am    Post subject: Hotter spark plug Reply to specific post Reply with quote

I have a 1941 farmall H which uses a autolite 3116 spark plug. Does any one no where I can find a hotter plug for this tractor. The champion crossed referance one is no hotter.
 
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The Red
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PostPosted: Thu May 02, 2013 10:21 am    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

Bob I have had real good luck with AC 386 plugs. Got rid of all the Champions.
 
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John T
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PostPosted: Thu May 02, 2013 10:57 am    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

Best I recall the Autolite 3116 is in the vicinity of the heat range around a 386 or hotter 388 Autolite. However its a non resistor plug I believe which Id especially recommend if you had a Magneto Ignition.

Other things which can help if fouling is a problem for which youre seeking a hotter plug is to use hotter thermostats (if a T stat tractor) or radiator air deflectors or shutters etc TO RAISE THE OPERATING TEMPERATURE,,,Dont run the carb richer then necessary,,,,,,,,Use wire core plug wires, keep the ignition well tuned.

John T
 
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David G
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PostPosted: Thu May 02, 2013 11:08 am    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

I would agree with John T, warmer engine makes for less fouling.

I put thermostat in my H, runs much better.
 
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old
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PostPosted: Thu May 02, 2013 11:11 am    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

Why do you want hotter??? Does it use a lot of oil or what?? You can only go so hot before doing so causes many other problems like holes burned in the pistons and or burnt valves.
 
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Bob Reineke
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PostPosted: Thu May 02, 2013 12:32 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

OK thanks for the tip
 
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Bob Reineke
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PostPosted: Thu May 02, 2013 12:34 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

Ok thanks for the info
 
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Bob Reineke
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PostPosted: Thu May 02, 2013 12:35 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

OK thanks for your input
 
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Bob Reineke
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PostPosted: Thu May 02, 2013 12:36 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

Ive tryed about everthing I can, and gas keeps fouling the plug once it runs a short time
 
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rustyfarmall
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PostPosted: Thu May 02, 2013 1:12 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

Bob Reineke wrote:
(quoted from post at 13:36:58 05/02/13) Ive tryed about everthing I can, and gas keeps fouling the plug once it runs a short time


If the carburetor is set so rich that one plug is getting fouled, ALL of the plugs would be fouling.

I'm wondering if maybe the tractor does not get worked hard enough? Possibly the cylinders are all sooted up and it is a piece of that soot that comes loose, and THAT is what is fouling the plugs?

I will suggest starting it up, and then take it out and make it WORK. HARD. Put it on the road in 5th gear and pull the throttle back. Take it up and down a few hills. Don't stop until after the heat gauge has moved into the "run" zone.
 
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Janicholson
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PostPosted: Thu May 02, 2013 1:45 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

I have substantial experience with single plug fowling. It has always been an issue with oil. Stuck rings and over oiling of the walls, or worn ring lands pumping oil up top where it fowls a plug, or moderately worn valve guides. The guides are nearly cost free to fix with umbrella seals under the retainers. and that should be task #1.
The other issues are rebuild time.
A warm engine that has been leaned (as you indicated earlier)Will vaporize fuel readily. Oil has both ash, and metallic compounds it it that are nearly invisible but conduct electricity down the center electrode fouling the plug. Jim
 
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GRAPE-DRANK
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PostPosted: Thu May 02, 2013 1:53 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

You can use any spark plug you want. Richardson Engineering And Machining.

Sparkplugadapters.com

They have all the specs for Farmalls or whatever else.
 


Last edited by GRAPE-DRANK on Thu May 02, 2013 1:54 pm; edited 1 time in total
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Bob Reineke
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PostPosted: Thu May 02, 2013 2:05 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

Thanks
 
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Bob Reineke
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PostPosted: Thu May 02, 2013 2:06 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

OK thanks I'll try that. It doesn't get worked hard
at all.
 
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Bob Reineke
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PostPosted: Thu May 02, 2013 2:08 pm    Post subject: Re: Hotter spark plug Reply to specific post Reply with quote

Thank you for that good information. I'll try what you suggest
 
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