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- - Spark Plugs (https://www.seccs.org/forums/showthread.php?t=1575)

ArthurS

2004-06-24 08:32 AM

Spark Plugs

I searched and didn't know if we had talked about the different types of spark plugs. I will need to get some new ones for the 30k service and had gone over the basics of the ones available.

So we have the standard (copper I think), then platinum, double-platinum (is this just a gimmick?), and iridium. I think that all of them have a gap at .044?

Quetion is, is it really worth it to spend the ~35$ for Iridiums? What are the stock ones considered? Copper?

Thanks for anyone's input on this.

sperry

2004-06-24 08:39 AM

IIRC the benefit of irridium plugs is mostly that they last longer. I read a good tech report somewhere... lemme see if I can find it.

sperry

2004-06-24 08:47 AM

Here's some info:

http://www.ngksparkplugs.com/techinf...000&country=US

http://www.spark-plugs.co.uk/pages/t...park_plugs.htm

ArthurS

2004-06-24 08:50 AM

Thanks!

sperry

2004-06-24 08:51 AM

Quote:

Originally Posted by ArthurS

Thanks!

Neither of those are the site I was think about. I'm still looking for the good one.

ArthurS

2004-06-24 09:00 AM

Quote:

Advantages of Iridium spark plug types
Because of the properties of Iridium, the spark plugs centre electrode can be made with a much smaller diameter than with platinum types (usually 0.8mm for NGK and 0.7mm for Denso), Gold or gold palladium and copper/nickel types. This means that spark plugs potential difference is more concentrated and hence less 'spark jump' voltage is required - this can be as much as 5,000 volts less than with standard plug types. Ignition is improved and less strain is placed on the ignition system. Benefits of improved ignition/combustion include better fuel economy, increased power/acceleration and especially better throttle response.

They really make it seem they are worth it over platinum's. Just hard to justify paying almost triple the cost of double platinum's.

sperry

2004-06-24 09:07 AM

More:

http://corner-carvers.com/forums/sho...hlight=iridium

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