Iridium Spark Plugs.My findings.

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Iridium Spark Plugs.My findings.

Postby Gman » Wed Sep 03, 2008 9:36 pm

Something I forget to mention is that I run NGK Iridium Spark plugs in both my CX,

http://tinyurl.com/63pz73

Image

Q:Are they better than standard plugs but are they worth the money.

Well over time yes.I've been running them 3 years and they have no sign of wear and never need re-gapping so stay optimal.


Q:Do the bikes start better.

Well hard to tell as both my CX have correctly serviced carbs and will start on-the-button even with standard plugs.

Q:Do they give more power



I cannot prove it but there's definitely a feeling of more power and a growl to the engine that is not there with standard plugs and the bikes do really rip-it up going up hills and dales and pull like Turbo Charged Tractors even two up!!

Q:Do they give better economy

Yes.With standard plugs the best I got out of either of my CX was 58 mpg(UK gallon) with standard plugs.The best I got on that bike with Iridium plugs was 62 mpg(UK gallon).
There are alot of variables to this so it's never a really great test.


Q:Would I recommend them


Yes.Even if it was only because you can fit them and forget about buying anymore plugs for the bike possibly in it's lifetime and never need to gap them(Unless something went drastically wrong and you are not supposed to ever change the gap anyway)

According to here some Iridium plugs can do 120,000 miles

http://www.spark-plugs.co.uk/pages/technical/iridium_spark_plugs.htm

Q:Would I go back to standard plugs

No.I keep my old standard ones as spares and cary a couple with me just incase in my underseat toobox.



New kid on the Block

There's an even newer kid on the block when it comes to spark plugs.They cost at the moment £18/$36 a plug but I ain't tellin' yet ;)
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Re: Iridium Spark Plugs.My findings.

Postby LRCXed » Thu Sep 04, 2008 3:55 am

As with all increased technology, things just keep getting better. I like the sounds of these plugs. One question though. What is the number on the plug that we all need to order for the CX?
Larry
"If I need to have someone do something for me, why shouldn't I learn to do it myself"
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Re: Iridium Spark Plugs.My findings.

Postby Gman » Thu Sep 04, 2008 4:02 am

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Re: Iridium Spark Plugs.My findings.

Postby LRCXed » Thu Sep 04, 2008 4:17 am

Thanks Shep, I'm going to order a set. Avery edge helps when you want MPG.
Larry

I just called my local discount auto part store, and they are going to order them for me for $6.99 a piece. No shipping either.
Thanks again.
"If I need to have someone do something for me, why shouldn't I learn to do it myself"
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Re: Iridium Spark Plugs.My findings.

Postby Gman » Thu Sep 04, 2008 4:23 am

You may want to slightly re-tune the mixture because they are more efficient or just keep an eye on the plug colour.They don't need to be A dark tan but edge towards a lighter Tan or test against best at idle as in normal setting.I have my Mixtures on perfect Blue in the chambers and the plug are towards the Lighter side of Tan.
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Iridium Spark Plugs Udate

Postby Gman » Mon Jun 21, 2010 12:58 pm

Well they have finally crapped out after around 16,000 miles.I won't be buying any more at the moment as I have box full of stock plugs I'm going to use up(Tight Wad me) :) :)
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