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best plugs for cub??

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DC

09-29-2004 20:49:41




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I have a 184 lo boy that I have been mowing with for years,I have a tach-hr meter on it and run 2000 rpm"s most of the time it burns NO oil and I only get about 100 hr"s out of a set of champions before 1 goes bad is there a beter plug I can use? also I changed it over to electronic ing. 3 years ago hoping it would help.




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John M

09-30-2004 12:44:34




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 Re: best plugs for cub?? in reply to DC, 09-29-2004 20:49:41  
I run Autolite 3116s in all my tractors.Havent had a plug fail in a few years now.The ones in my 154 are about 10 years old and she runs like a champ.



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George Willer

09-30-2004 07:19:29




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 Re: best plugs for cub?? in reply to DC, 09-29-2004 20:49:41  
Opinions vary widely about plugs. Many, like me, think the choosing plugs by manufacturer is just plain silly... the important thing is heat range.

After 100 hours, when you figure your plugs are shot, how did they fail? Are they fouled or are the tips burned away? Adjust your heat range accordingly. Fouled = go hotter. Burned = go colder.

Most of us prefer Champion D-21 or equivalent for Cubs, but they may be too hot for your use.

Regardless of manufacturer, they are all made with steel tips, porcelain insulators, and steel shells. No magic is involved.

George Willer

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Dr.Evil

10-04-2004 10:17:24




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 Re: best plugs for cub?? in reply to George Willer, 09-30-2004 07:19:29  
George is correct about heat range. If a plug over-heats the center & side electrodes melt & burn off and the plug stops firing. Not sure on the CUB but most letter series FARMALLS used a D-16 Champion plug when they were worked hard. In the mid 60's Champion came out with a D-15Y plug, cooler heat range but extended tip to get the spark down into the fuel/air mixture and that is what I have in My tired old Super H, and I bet the plugs are 20+yrs old. If You run a VERY hot plug like a D-21 and are pulling the engine hard I would say your over-heating Your plugs and risking SERIOUS DAMAGE to Your engine. Anything from detonation, collapsed ring lands, holes burned in the piston tops, burned valves, etc. It's better to err on the side of a slightly cold plug that way to hot of plug. I've made that mistake in the past and have the repair bills to prove it.

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farmallman

09-30-2004 05:33:21




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 Re: best plugs for cub?? in reply to DC, 09-29-2004 20:49:41  
I was told to put Auto-Lite (sp) into mine, i have to do that yet but appearently, Auto-Lites are better quality.



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