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TR-55 vs TR-6

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Old Nov 27, 2001 | 06:46 PM
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Default TR-55 vs TR-6

Is either one better? What are the differences/advantages/disadvantages? TIA

Jerry
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Old Nov 27, 2001 | 06:50 PM
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Default Re: TR-55 vs TR-6 (99 Corvette)

It is not a better or worse situation. If you are NA, the correct heat range for you would be the TR55. With forced induction such as superchargers, you will want a cooler spark plug. This is where the TR6 comes in to play.
Hope this helps,
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Old Nov 27, 2001 | 07:01 PM
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Default Re: TR-55 vs TR-6 (99 Corvette)

I see people talk about "colder" plugs, but I don't quite understand what this means. Can someone tell me what makes a plug "colder" in layman terms? Thanks

Jerry
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Old Nov 27, 2001 | 09:12 PM
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Default Re: TR-55 vs TR-6 (99 Corvette)

A colder plug is designed to keep the combustion process at a colder temperature than a standard heat range plug. That's why it's good to go colder for forced induction; blower, turbo or nitrous; which creates added heat that can cause damage.
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Old Nov 27, 2001 | 09:50 PM
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Default Re: TR-55 vs TR-6 (99 Corvette)

A "colder" plug does not lower combustion temperature, but rather only the temperature of the center electrode. If the electrode is too cold, deposition will form and misfiring may occur. If it is too hot, detonation, rapid wear, and even catastrophic electrode failure may occur.

Simply looking at the plugs provides a tremendous amount of information supporting any possible temperature change. I am sure you can find a "how to read sparkplugs" chart on the net somewhere.
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Old Nov 27, 2001 | 10:06 PM
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Default Re: TR-55 vs TR-6 (99 Corvette)

Thanks for the imput guys. I guess I will go with the TR-55s then.

Jerry
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Old Nov 27, 2001 | 10:08 PM
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Default Re: TR-55 vs TR-6 (99 Corvette)

Check out this web page. It has some info on spark plug heat ranges.
http://www.ngksparkplugs.com/techinfo/spark_plugs/

See the how they work section
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