Yes, I did a search for spark plugs and wires, but wanted to get your opinions on which of these plugs is best for a stock 98, MN6.

NGK TR55 (Copper), or NGK TR55VX (Platinum)

Also, are these plugs easy to find or will I have to order them?

Thanks and :cheers:

 

NGK TR55's are the best because they are hotter. The platinums are cooler, better for running nitrous. The TR55's are abundant at most quality automotive stores. Try Napa. They shouldn't be more than $2 apiece. $1.95 at Thunderracing.com :yesnod:


[Modified by ScreaminDemon, 11:48 PM 7/12/2002]


[Modified by ScreaminDemon, 11:49 PM 7/12/2002]

 

TR55 :smash:

Jerry

 

I bought TR 55's at O'Riellys for $1.67 ea.

 

Actually the TR55's (coppers), the TR55vx's (iridiums), and the TR55ix (platinums) are the same heat range of 5.

Heat range is selected based on the environment of the combustion chamber. Too hot of a plug, and you will get preignition, and plug failure. Too cold of a plug and you will get fouling because its not hot enough to clean itself. The material of the plug effects heat range contruction, but really has to do with longevity and spark, not heat range itself.

Copper plugs are optimal because they deliver the best spark, and the most consistant heat dissapation. They wear out the quickest tho.

Iridium plugs are a harder alloy then platinum, but recent technology allows the iridium to be mallable enough to make a thin electrode to provide a good spark with mid range longevity.

Platinum plugs last the longest, but have moderate spark ability. They are your "100,000 mile before a tune up", kind of plug that is great for mass produced cars and marketing.

The TR6 plug is the same contruction and material as the TR55, but is one heat range colder at 6, and is a great option for nitrous use.




[Modified by kewlbrz, 11:07 AM 7/13/2002]