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Buckster 10-24-2005 11:57 AM

640 Adv Spark plug
 
Has anyone tried the Iridium plugs from NGK in their 640 Adv?

If so have you noticed any difference?

ram1000 10-24-2005 12:02 PM

I have one in my LC4, but I couldn't tell any difference in the running. I also put them in my GSXR and again no noticable difference. Hopefully they will last forever.

meat popsicle 10-24-2005 01:03 PM

two spark plug threads in the index Bucky. :wave

Buckster 10-24-2005 02:33 PM

Quote:

Originally Posted by meat popsicle
two spark plug threads in the index Bucky. :wave

And niether of them answered my question, you're very analy retentive at the moment.

creeper 10-24-2005 02:58 PM

Hey Bucky... I'll bite on your iridium plug query...

Quote:

Originally Posted by NGK
• More Durability and a Higher Melting Point than Platinum
• Better Center Electrode Anti-Oxidation and Anti-Erosion
• Improved Ignition
• Superior Anti-Fouling
• Lower Required Voltage
• New Metal Shell Plating Process for Better Anti-Corrosion

The realities are, would any of the above benefits be noticeable under normal circumstances?
Would a seat of the pants power increase be felt?
Would you be willing to leave the plug in for 10... 20 thousand miles?


Quote:

Originally Posted by NGK
Iridium is a precious, silver-white metal and one of the densest materials found on earth.
The natural properties of Iridium offered NGK the opportunity to create one of the world's finest spark plugs.
The result are spark plugs that require less voltage to spark, burns fuel more efficiently,
sparks at leaner air/fuel mixtures, and delivers higher horsepower and better gas mileage.

If one were to take the lean mixture idea to heart and rejet their bike a bit leaner, the consequences of which was a measurable improvement in fuel economy without a loss of power... then maybe the cost could be justified, especially on a single cylinder bike used frequently for commuting.

C

meat popsicle 10-24-2005 03:42 PM

Quote:

Originally Posted by Buckster
And niether of them answered my question, you're very analy retentive at the moment.

the full Freudian title of that category is "Anal-Sadistic" sweetheart :evil

DC950 10-24-2005 04:05 PM

I wanted to but couldn't find one so I used the regular type. I imagine it would last forever though.

I don't know how many miles were on my plug, but it had to be 8,000 miles. It had no insulator pitting, the gap never changed that I could gauge, and it had no visible electrode wear. I really don't know why I even changed it.

Scoot Jockey 10-24-2005 10:54 PM

I just installed one last week, and adjusted the valves along with it. The previous plug had developed a bit of brown fuzz from running too rich above 13,000 FT at the KTM Colorado rally. The new plug works great, but it is nothing earth shattering. After the install, I took the bike for a short 50 mile ride on some quick canyon roads. The bike felt strong, and the tappets were back to their tappy selves. The electrode on the IX plug is very small, slightly larger than a pin. I can't wait to see what it looks like 3000 miles from now.

Buckster 10-25-2005 01:31 AM

Quote:

Originally Posted by creeper
Hey Bucky... I'll bite on your iridium plug query...



Would a seat of the pants power increase be felt?
Would you be willing to leave the plug in for 10... 20 thousand miles?




If one were to take the lean mixture idea to heart and rejet their bike a bit leaner, the consequences of which was a measurable improvement in fuel economy without a loss of power... then maybe the cost could be justified, especially on a single cylinder bike used frequently for commuting.

Creeper, I do not believe that there could be noticeable power increase but was wondering if maybe with slightly better burn in the chamber if the bike could be a touch smoother at low revs, I currently change the plug at 3.5k miles at the time of service just because it is a pig to get to, but the plug always looks good, I think I will fit an Iridium and keep it till it fails but carry the one I take out this time, the cost is minimal, a full £3 more than the standard plug.

I commute on my bike 50 miles each way every day at the moment except when I have meetings and need to be suited, then I take the car but start and finish late to miss the traffic.


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