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vmaximus
Scooter Rider
Number of posts: 19
Age: 59
Location: Nottinghamshire England
Points: 434
Registration date: 2011-04-15
 |  Subject: Iridium spark plugs  Sun May 08, 2011 12:02 pm | |
| Hi, after looking in the service history for my 09 S/wing i cannot find any info when the spark plugs were last changed so i thought that would replace them.Is there any benifit in changing them with Iridium spark plugs or should i stick with the stock plugs Any info would be greatly appreciated. |
|   | | bigbird
Silver Wing Guru
Number of posts: 2164
Location: Winnipeg Canada
Points: 3061
Registration date: 2010-05-02
| | Subject: Re: Iridium spark plugs Sun May 08, 2011 1:58 pm | |
| The Iridium plugs last a very long time, likely 50k miles in a Swing. The plugs should be pre-gapped correctly. If not, bend only the side electrode. Never touch the thin centre electrode. |
| | | | honda_silver
Site Admin
Number of posts: 2258
Age: 51
Location: Georgetown, Tx
Points: 3605
Registration date: 2008-12-23
| | Subject: Re: Iridium spark plugs Sun May 08, 2011 2:07 pm | |
| | bigbird wrote: | | The Iridium plugs last a very long time, likely 50k miles in a Swing. |
I replaced my regular NGK plugs twice at about 9,000 miles.
I have 42,000 miles on my NGK Iridium plug now._________________ Bill - Georgetown TX 07 Silver Wing ABS Clearview w/vent, Givi E96/TB19/E52 with Admore Lighting, Alaskan Leather, Wrist Rests, 3M Solas tape, K&N air, Hyperpro spring, Grip Puppies, Airhawk, Utopia backrest, Stebel, Apexcone HIDs, StingerZ LEDs (w/Backoff WigWag), Knight Rider Sequential LED, NGK Iridium, Power Commander III, Manic Salamander, Saeng mirrors, Garmin Zumo 660, Dark-Side Sumitomo Tire  |
| | | | honda_silver
Site Admin
Number of posts: 2258
Age: 51
Location: Georgetown, Tx
Points: 3605
Registration date: 2008-12-23
| | Subject: Re: Iridium spark plugs Mon Apr 30, 2012 9:08 am | |
| | honda_silver wrote: | I replaced my regular NGK plugs twice at about 9,000 miles each.
I have 42,000 miles on my NGK Iridium plugs now. |
I replace my NGK Iridium spark plugs at 53,550 miles.
The spark plug gap definitely increased, if I get a chance I will measure later)
The RPM idle speed jumped by ~300 RPM ( just changing the spark plugs ), bringing me back to normal RPM range. I did not want to adjust the RPMs till I replaced the spark plugs.
Based on the results I observed, I will replace my NGK Iridium spark plugs in the 40,000 - 45,000 miles ranges next time to determine the optimal NGK Iridium lifetime._________________ Bill - Georgetown TX 07 Silver Wing ABS Clearview w/vent, Givi E96/TB19/E52 with Admore Lighting, Alaskan Leather, Wrist Rests, 3M Solas tape, K&N air, Hyperpro spring, Grip Puppies, Airhawk, Utopia backrest, Stebel, Apexcone HIDs, StingerZ LEDs (w/Backoff WigWag), Knight Rider Sequential LED, NGK Iridium, Power Commander III, Manic Salamander, Saeng mirrors, Garmin Zumo 660, Dark-Side Sumitomo Tire |
| | | | Old Limey
Maxi-Scooter Rider
Number of posts: 171
Age: 67
Location: BOLTON LANCASHIRE ENGLAND
Points: 912
Registration date: 2010-06-09
| | Subject: Re: Iridium spark plugs Mon Apr 30, 2012 11:12 am | |
| Vmaximus, I changed to Iridium plugs at 8,000mls service(Iridium plugs were same price as NGK ordinary plugs) at 16,000mls i checked them and they were okay. Performance wise, no difference that i could comment on. However, as people are saying you get 50,000ml + out of them why not fit them?  |
| | | | Brooksy
Scooter Rider
Number of posts: 2
Location: Crewe, Cheshire, UK
Points: 24
Registration date: 2012-05-02
| | Subject: Re: Iridium spark plugs Thu May 03, 2012 1:09 pm | |
| If you look at Honda cars fitted with iridium plugs, they quote 75000 miles before changing them. For an extra few pounds (proper money) it can't be a bad deal. |
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