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 Lets talk about spark plugs

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willis923
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PostSubject: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitimeApril 16th 2014, 3:29 pm

alright guys, so i know there is already a spark plug thread floating around on here, but that dosent really relate to what i need.

SO, here we go
i need to replace the spark plug in my push mower, the engine is a 6.5 horse, OHV briggs platinum. its about 5 years old, religiously maintained. (she is my baby) the stock spark plug is a champion RC12YX, and i cant find the damn thing anywhere. even on the champion website, i get "no results found". its like it dosent exist. ive read on various places that there isnt much differance between the YX and the RC12YC, which is a common, standard plug for almost ALL OHV engines. so i went and pulled the YX out of my push mower and the YC out of our Kohler V-twin, and waddya know, there almost identical. the only differance is that the center electrode is alot smaller on the YX. supposedly its like that to create a hotter, more prominate spark. i call snake oil. its also supposed to be "built" for a smaller, .20 gap, whereas the YC is "built" for a .30-.35 gap. really, the only differance is the center electrode. ive got a vid uploadin so i'll post that in here when its done. let me know what yalls think. would it be ok to use an RC12YC?
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mr.modified
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PostSubject: Re: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitimeApril 16th 2014, 4:05 pm

As long as the heat range is the same, it won't hurt anything. I looked up the letter designations in the book. Y stands for standard projected core nose. C = copper plus design. X is for fine wire.
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willis923
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PostSubject: Re: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitimeApril 16th 2014, 4:50 pm

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Doc Sprocket
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PostSubject: Re: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitimeApril 16th 2014, 6:49 pm

You're good to run the YC at specified gap.
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PostSubject: Re: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitimeApril 16th 2014, 7:20 pm

The R is for resistance, if you ran a plug without the R on ur engine during a football match on tv, every neighbour came out and yelled at you, since they distorted the tv picture  Very Happy
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PostSubject: Re: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitimeApril 16th 2014, 7:26 pm

Thunderdivine wrote:
The RC is for resistance, if you ran a plug without the RC on ur engine during a football match on tv, every neighbour came out and yelled at you, since they distorted the tv picture  Very Happy

And here's, says it's OEM now.

http://wiki.answers.com/Q/Is_the_RC12YC_the_same_as_the_QC12YC_spark_plug#slide=7

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willis923
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PostSubject: Re: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitimeMay 4th 2014, 9:35 am

i dont think thats right. both plugs just came out of my Kohler command 20 V-twin. both of them got put in at this time last season... i think something is wrong... LOL

from the left cylinder- Lets talk about spark plugs NCM_03451_zpsff862171

aaand the right? - Lets talk about spark plugs NCM_03441_zps20b739fa

both side by side Lets talk about spark plugs NCM_03461_zpsad272a9a


i think theres something broken
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Doc Sprocket
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PostSubject: Re: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitimeMay 4th 2014, 10:08 am

Man, you better put that plug back in, 'fore all your oil drools out...
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PostSubject: Re: Lets talk about spark plugs   Lets talk about spark plugs Icon_minitime

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