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 Post subject: spark plug ?
PostPosted: Wed Jun 16, 2010 2:28 pm 
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what 3/4 reach 14mm plugs are everybody using?

also are the NGK DP8EA-9 the best 3/4 reach 12mm plugs, i usually try to get bosch platinum plugs but cant seem to find any that cross with the DP8EA-9's?

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 Post subject: Re: spark plug ?
PostPosted: Wed Jun 16, 2010 4:00 pm 
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i think the part number is a 62,63 and 64,autolite,coldest to hotest,i think


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 Post subject: Re: spark plug ?
PostPosted: Wed Jun 16, 2010 5:20 pm 
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On long reach 14mm we use 7904 Bosch copper plugs or 4035 Bosch for platinums.

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 Post subject: Re: spark plug ?
PostPosted: Thu Jun 17, 2010 1:41 pm 
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thanks guys

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 Post subject: Re: spark plug ?
PostPosted: Tue Jan 24, 2012 10:48 pm 
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What is the best plug to use. I use Champion plug right now and I heard that they wernt very good.


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 Post subject: Re: spark plug ?
PostPosted: Wed Jan 25, 2012 2:41 am 
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Champion plugs is the best by far, I run them the entire time I owned a buggy, never missed a beat.

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 Post subject: Re: spark plug ?
PostPosted: Wed Jan 25, 2012 1:10 pm 
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I personally would not run a Champion plug in a lawn mower. I have had the center electrode fall out of Champion plugs.I like Bosch in a AC.I run Autolites in my everyday cars and trucks JM2cents
Baddvw wrote:
Champion plugs is the best by far, I run them the entire time I owned a buggy, never missed a beat.


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 Post subject: Re: spark plug ?
PostPosted: Wed Jan 25, 2012 7:14 pm 
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If i where to get Bosch, would the hottest plug be best? I believe i am using the hottest plug my Champion at the moment.


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 Post subject: Re: spark plug ?
PostPosted: Wed Jan 25, 2012 7:30 pm 
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duneman wrote:
If i where to get Bosch, would the hottest plug be best? I believe i am using the hottest plug my Champion at the moment.


Are you running 14mm or 12mm?

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 Post subject: Re: spark plug ?
PostPosted: Thu Jan 26, 2012 1:44 am 
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autolight and champs are junk i bosh or ngk

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 Post subject: Re: spark plug ?
PostPosted: Thu Jan 26, 2012 9:31 am 
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I had better luck on champions than any other plugs I ever ran in my buggies and they never let me down, I am still running the same plugs in my 2500 for 2 years now and they were even being used on the exact same heads for 2 years, so they are 4 years old now....I just don't see why I should pay more for ngk or Bosch plugs when they are $2.00 a piece and my experience with them proves they are good enough for me.

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 Post subject: Re: spark plug ?
PostPosted: Thu Jan 26, 2012 3:37 pm 
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rockrockets1 wrote:
I personally would not run a Champion plug in a lawn mower. I have had the center electrode fall out of Champion plugs.I like Bosch in a AC.I run Autolites in my everyday cars and trucks JM2cents
Baddvw wrote:
Champion plugs is the best by far, I run them the entire time I owned a buggy, never missed a beat.

champion plugs are junk,,,i been running autolites for a while and if my plugs never stay 4 yrs in anything,,,,bout 1 time ayear in my bug whether it needs them or not


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 Post subject: Re: spark plug ?
PostPosted: Thu Jan 26, 2012 8:20 pm 
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duneman wrote:
If i where to get Bosch, would the hottest plug be best? I believe i am using the hottest plug my Champion at the moment.

If a plug is too hot it will cause pre-ignitoin . I like to run the coldest plug that will not foul . This can help keep head temps. down a litte .


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 Post subject: Re: spark plug ?
PostPosted: Fri Jan 27, 2012 9:07 am 
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hyde wrote:
duneman wrote:
If i where to get Bosch, would the hottest plug be best? I believe i am using the hottest plug my Champion at the moment.

If a plug is too hot it will cause pre-ignitoin . I like to run the coldest plug that will not foul . This can help keep head temps. down a litte .

i thought timing causes pre ignition,,,dont that rotor button tell what plug to fire when it fires,,,,,i run the hottest plug i can buy and a 55 thous plug gap because thats what my ignition system calls for,,,plus racing fuel burns cooler than regular pump gas


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 Post subject: Re: spark plug ?
PostPosted: Fri Jan 27, 2012 11:25 am 
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C&P from Denso: "all spark plugs must be able to resist fouling. The trick here is to design the plug so that the electrodes run hot enough to burn off any deposits but not so hot that they cause preignition or detonation. To burn off carbon deposits, the electrodes need to reach about 700 degrees F quickly. But if the electrodes get too hot (above 1,500 degres F), they can ignite the fuel before the spark occurs, causing preignition and detonation. For most plugs, the ideal operating temperature is around 1200 degrees F."

"The temperature of the electrodes is controlled by the length of the ceramic insulator that surrounds the center electrode and the design of the electrode itself. Ceramics do not conduct heat very well, so an insulator with a relatively long nose will conduct heat away from the electrode more slowly than one with a relatively short nose. The longer the path between the electrode and the surrounding plug shell, the slower the rate of cooling and the hotter the plug."
As you go up in compression ratio, more heat is produced, requiring a colder plug.

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 Post subject: Re: spark plug ?
PostPosted: Fri Jan 27, 2012 12:58 pm 
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And yet again,this is another fine example of learning from fellow buggy riders.I can't seem to retain information like I use to but I can always save a post and go back for info I need.maddog you seem like a good guy and always offer good advise.hope one day I have my stash of toys like you do.you for sure have got it going on,lol.chad :mrgreen:

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 Post subject: Re: spark plug ?
PostPosted: Fri Jan 27, 2012 1:04 pm 
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gasman wrote:
And yet again,this is another fine example of learning from fellow buggy riders.I can't seem to retain information like I use to but I can always save a post and go back for info I need.maddog you seem like a good guy and always offer good advise.hope one day I have my stash of toys like you do.you for sure have got it going on,lol.chad :mrgreen:

No children=more toys.
Sometimes, I'm a little jealous of you guys with kids.

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 Post subject: Re: spark plug ?
PostPosted: Fri Jan 27, 2012 7:13 pm 
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X2 Thanks Maddog


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 Post subject: Re: spark plug ?
PostPosted: Sat Jan 28, 2012 11:25 am 
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Damn Mad Dog's showing out.Thats some good info. :)


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