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ulflyer
honda_silver
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DickO
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PostSubject: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 19, 2012 8:52 pm

Hi All,
Have researched iridium spark plugs on this site but have seen no mention of an applicable part number that might apply to it. Also, a good, best, favorite place to pick up such an item.
Any help would be appreciated. Thanks.
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JeffR_
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 19, 2012 10:02 pm

Dick,

I bought mine from Matt at scootertrap.com , but as we all know he closed. Here is one link that I looked up and they seem to be about what most charge.

http://www.scootertronics.com/hosi600irspp.html

I changed mine out to the iridium and I need to do some maintenance on my scoot this winter. I hear they last a lot longer but probably don't do much else than last longer.
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DickO
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 19, 2012 10:21 pm

Thanks JeffR. I'll giv'em a look-see. Also, one more question if you don't mind. When you switched over to the iridium plugs, did you have the problem (as one SWinger had) of a big jump in idle rpm's??
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JeffR_
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 19, 2012 10:30 pm

Dick,

I didn't have any problems at all. I kind of thought it may have smoothed it out some, but then it could have been just because I changed out to new plugs. But I really think they are just a plus since they last so long. Also, I have never bought from this place but they seem to sell many things so I wouldn't have a problem buying from them if I need something. It was just a search I did to try to find a place that sells them. I sure do miss Matt at scootertrap.com. I ordered quick a bit from him.
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honda_silver
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 19, 2012 11:53 pm

DickO wrote:
Have researched iridium spark plugs on this site but have seen no mention of an applicable part number that might apply to it.

NGK CR8EH-9 Normal spark plug
NGK CR8EHIX-9 Iridium spark plug

DickO wrote:
Also, a good, best, favorite place to pick up such an item.

Normal automotive parts store ... call first to see if in stock or need to order.
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ulflyer
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeFri Jan 20, 2012 7:30 am

You might look for a crossover from NGK to Denso. A couple weeks ago I wanted to change iridium plugs on my car and at all local parts houses and some online ones they were $25 each: found Denso's for $12.

Edited to add: Looked it up and Denso is IU20 but price if anything appears higher than NGK which can be had for $9 each.
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DickO
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeFri Jan 20, 2012 7:00 pm

Thanks to everyone for all the information!!
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Old Limey
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeSat Jan 21, 2012 12:17 pm

DickO, I put Iridium plugs in at 8,000 mls. Now got 15400mls up. First thing i noticed revs dropped slightly at tickover(only slightly). Perfomance wise, very pleased with them never any missfire or overrun.Someone said they will last up to 50,000mls. Not sure about that, I'll be checking them out when i do the 16,000ml service. In the UK they cost the same as NGK ordinary plugs, about £8. Normal cruising speed for me is 60mph. Smile
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ulflyer
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeSat Jan 21, 2012 2:22 pm

The ones I recently replaced in my car had 71,000 miles on them and looked practically like new....they would have gone on for another 30K most likely. I had a slightly rough idle (tickover....I like that word) and thought new plugs would help. They didn't. I'm told the throttle body needs cleaning.

I would expect them to last 50K in the SW, at least.
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honda_silver
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeSat Jan 21, 2012 3:59 pm

ulflyer wrote:
I would expect them to last 50K in the SW, at least.

My NGK Irididium spark plugs have lasted 50,000 miles. I will replace them when I service my Silverwing.
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Old Limey
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeMon Jan 23, 2012 1:45 pm

What would tell you they need replacing, honda silver?
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honda_silver
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeMon Jan 23, 2012 11:50 pm

Old Limey wrote:
What would tell you they need replacing,

When I replace the spark plugs, I will compare them to the new spark plugs (appearance, gap, tip).

Then i will check if I notice any differences (idle, power, response) and then ultimately the MPG comparison.

If the spark plugs have no difference, then I will extend the spark plug life next time.

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Old Limey
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeTue Jan 24, 2012 11:44 am

I haven't looked at these plugs since i fitted them, i presume they should look as the ordinary plugs should IE: brick red tip, and no sign of oiling or weak mixture. The other point was, as the gap was set at manufacturer, would it be safe to regap ,if needed, as i was told they are quite fragile(or at least the centre electrode is). I'm a tightwad so would not buy a new set unless i was sure i needed them. Smile
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bigbird
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeTue Jan 24, 2012 1:04 pm

x


Last edited by bigbird on Sun Jun 10, 2012 4:47 pm; edited 1 time in total
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Old Limey
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeTue Jan 24, 2012 2:25 pm

Thanks Bigbird Smile
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DickO
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 26, 2012 12:08 am

So... if a person purchases iridium plugs, then they just stick them straight into the engine?? Do they come already pre-gapped??
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bigbird
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 26, 2012 12:11 am

x


Last edited by bigbird on Fri Jun 08, 2012 9:44 am; edited 1 time in total
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NWSSC
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 26, 2012 12:39 am

Just my two cents worth, but the best thing that happened to spark plugs was taking the lead out of the fuel. Next was fuel injection.
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PostSubject: Re: Spark Plugs   Spark Plugs I_icon_minitimeThu Jan 26, 2012 2:31 am

Sparkplugs do come pre-gapped, but I always check them. Who knows, they might have a knucklehead like me drop them somewhere along the line.
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