soloman369

iTrader: (13)

Ok well we r having an aggument about what spark plug is worse use wit nos is it ture that iridums r the worst ones u can use? if so why?

tonskiguy

iTrader: (3)

I don't know abour the Iridiums, but I've always heard not to use platinum tipped plugs because the platinum tip can get blown off of the plug and score your cylinders. I just use conventional.

Websy21

iTrader: (34)

No reason to use the iridiums anyways, get the tr6's and change once a year and be done! You should be checking them anyways so why not get the one's that work and the price is right!

Robert56

iTrader: (2)

What we want is a non protruding and heavy gauge electrode. A heavy wire can displace heat quicker, and a non protruding tip has a less likely chance of turning into a blow torch. Depending on hit size, a colder range plug is better. I like the TR7, as it has less protrusion than the tr6.
Robert