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Post by Foreman Rider on Nov 26, 2004 12:10:26 GMT -5
Which spark plug to you recommend for your ATV or which do you get the most of and is at a resonabke price? Im putatin it on a Foreman ES so i need so help.
Thanx,
Ethan
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Post by Jake on Nov 26, 2004 19:34:10 GMT -5
People claim a thousand things about a thousand spark plugs. Most all of the claims seem to be direct reflections of what the advertisements say, not what it really does.
The fact is that spark plugs do not do anything, create anything, or cause anything. They facilitate other items to create, cause, and do things. They have to "match" your ignition system, cylinder design, and typical riding style and environment.
You won't find any improvement by installing racing, high performance, and expecially "gadgety" plugs (like Splitfire's). Plugs are not, and can not be a stand alone upgrade.
If your bike is stock or close to it (No redesigned engine spec's), stick with NGK. The number is DPR7EA-9. In extreme cold weather (couple of months with the daily high still below zero) then consider a slightly hotter plug (DPR6EA-9), or if you plan to spend some time in the desert with the throttle on the pin for hours at a time (and I don't mean just beating on it in general, I mean literally hours without ever letting off the pin) then you would want a colder plug (DPR8EA-9)
One thing you can do is upgrade to the irridium plugs that are in the Rubicons. They are $15 to $20 each, depending on where you get them, and they do (in theory) offer a longer life span. I don't have a part number ot offer for that one. Considering that most riders who never change the plug till it won't run don't wear one out but every three to seven thousand miles (depending on mods, riding habits, and conditions), my preference is to use a two dollar stock plug and change it every year and know that it's always fresh.
The other one I would hesitantly recommend is Denso. These are a Honda approved substitute, and in general are a good quality spark plug, but I have no first hand experience in any Honda ATV.
The ones I would strongly recommend that you avoid are Splitfire's "miracle in a box" because they will slow you down, and any Champion plug. For some strange reason, Polaris, Mopar, and Briggs and Stratton engines really appreciate Champion plugs, and while they work great in other engines at first, they don't last long at all.
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Post by WILD450S on Dec 1, 2004 19:04:23 GMT -5
I run the iridium plug and the lifespan of it I will never know. I tend to change them every year and the ones I take out are fine. I'm just a perfectionist who likes to change any minor thing that I can before problems develop.  ;D |
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Post by Foreman Rider on Dec 1, 2004 19:33:09 GMT -5
Thanx guys, ill probably stick with the NKG plugs i got know.
Ethan
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Ezrider
Sergeant
TBF Member
Posts: 89
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Post by Ezrider on Dec 1, 2004 20:28:32 GMT -5
thats what I run.........never had a problem yet with one.
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Post by BadForeman on Dec 3, 2004 19:11:42 GMT -5
ForemanRider,
You know how I dont even have a Foreman yet, well lets just say i've already started the modifying to it. I was at work the other day and the had a big box of NGK spark plugs for sale for $2.50 each. Well I said I needed two NGK Spark Plugs for a Foreman and thats what I got. I looked around and it seems like thats what everyone else is running so, I thought why not try it? I'll let ya know how it does when I get the Foreman. JMO
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Post by BadForeman on Jan 8, 2005 23:26:11 GMT -5
Well I found out that the same NGK spark plug that goes into the Foreman fits in my Rancher too. So this winter I put one of them in to see if I could tell any real difference. I kinda did too. It seemed easier to start. So lets just say I kinda think its a good accessory worth getting and I am getting some more later for the Foreman for extras. Just thought I would let ya'll know!!!
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;D
