Spark plug - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 24 Old 05-21-2006, 11:16 AM Thread Starter
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Spark plug

I just had my 12000 km check up and my dealer offered me to put some "spitfire" spark plug. Their sold for $20 each but he sold it to me for $5 each. Says their not offen asked and want to discountinue it.
Anybody heard of those ?
The only thing I notice different is that the top peace of metal is split in two part, like a snake tong.
Could it make a big difference ?

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post #2 of 24 Old 05-21-2006, 11:53 AM
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It provides more right angle corner area that parks prefer so should last a little longer than standard plugs but not that much. For a longer lasting plug, go with platinum which outlasts iridium which outlasts standard.

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post #3 of 24 Old 05-21-2006, 12:01 PM Thread Starter
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So if I get it right, it doesn't justify the $15 more expensive that it is ask for. Thank god he sold it to me for $5
Thank you for the advise greywolf, nex time I'll try the platinume one.

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post #4 of 24 Old 05-23-2006, 05:27 AM
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I personally do not beleive in those hocus-pocus like Spitfire and some other "revolutionary" brand advertises. The performance and the life of a spark plug besides the manufacturing process mainly depend on the materials used: the ceramic and the electrode's metal.
I have been working 7 years in a car spare part shop. We sold thousands of NGK plugs. We have NEVER EVER had any technical claims on them. Just one fact to notice: NGK was the first in the world who used copper in their plugs as standard (at that time Bosch offered copper only in their premium plugs).
NGK with its brother company NTK are the world's largest technical ceramic manufacturers, for example they are the leader in catalysator parts manufacturing. The other material is used at the poles where the spark generated. Every sparking means material-lose from the electrode. Expensive metals like iridium or platinum whithstand more against this kind of erosion. Lower erosion=slower increase of gap between the poles=sparking performance doesn't change too much as time goes by.
My experience is that today's modern sparkplug's life is much more longer than what is their replacement-intervals. Even two or three times! You can use your old plugs just need to reset the gap. The manufacturer's (Suzuki) recommendation on the change is driven only by safety of engine functionality and business.
For everyday use I suggest just to use the recommended plugs or other brand's compatible ones. The use of any "extended life" plugs perhaps makes sense when you go for a trip which takes longer than the plug change interval. Also by using extra plugs you will never notice any increase in performance, mpg or so, it is just waste of money.

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post #5 of 24 Old 05-23-2006, 09:50 AM
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Did a Google search and was directed to this site:

http://www.splitfire.com/triple.htm

Now SplitFire's patented split "V" side electrode design is available with three separate points of platinum, substantially reducing electrode wear. What's more, the revolutionary platinum-tipped fine wire center electrode requires less voltage to fire. No other spark plug combines 3 platinum alloy points, the fine wire center electrode and the patented split "V" technology. No other spark plug provides more for the life of your vehicle engine!

No claim of increased performance.

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post #6 of 24 Old 05-23-2006, 09:23 PM
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it is hocus pocus...

regardless of what kind of spark plug you have, it'll only fire the amount of juice that the distributor can give it.
post #7 of 24 Old 05-24-2006, 04:27 AM
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As I wrote before every systems with split V or multiple electrodes (Splitfire: Triple Platinum, NGK: V-Power, Bosch: Platinum+4, Platinum2, etc) or with special metals like iridium or platinum are designed to maintain the gap between poles. Manufacturers would like to make it maintenance-free.
Before you install a new plug you need to set the gap according to engine producer's specification. It is usually between 0,4-1,2 mm depending on the vehicle, the older the vehicle the smaller the specified gap. This is because of the evolution of ignition systems. Later ones have higher power/performance, can produce sparking on larger gap.
Back to the initial gap setting: the tool for that is usually a feeler gauge:


The tolerance of the gap set by this tool is about tenth of a mm. If you use a normal plug the gap increase during the replacement-interval measures maximum 0.1 mm. So by a wrong setting you can generate the same gap increase like the normal wear and you will realize that the engine still starts and runs without any problem. Why? Because the initial gap is calculated backwards: from the maximum allowed gap minus the wear during the replacement-interval.
Multiple or V shaped electrode plugs do not fire more sparking than one at a time. Sparking will only be generated where the smallest the gap between electrodes. Exactly the same as a normal plug does.
I write the whole thing to try to highlight that for normal, everyday use it is not necessary to use the most modern, sophisticated and expensive spark plug.

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post #8 of 24 Old 05-24-2006, 09:39 AM
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Your English is wonderful. I now have this picture in my mind of my plugs 'sparkling' - thank you for that.

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post #9 of 24 Old 05-24-2006, 01:17 PM
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Our friend from Budapest seems to be a wealth of knowledge. Thank you Mokus. Ride Safe.

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post #10 of 24 Old 05-24-2006, 02:21 PM
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Quote:
Originally Posted by kamloopsal
mokusbajusz

Your English is wonderful.
Quote:
Originally Posted by water warrior
Our friend from Budapest seems to be a wealth of knowledge.
I cannot decide whether you ridicule me or not. :?
I am still fighting with english and the slang used our fellows here. I have learnt it many years ago and for the time being unfortunately do not use it regularly (except this forum). I need to use a dictionary a lot. So I have asked Howboucha to open a topic (just for me?) with different slang words and abbreviations and their explanations. Am I crazy? Definitely YES!

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