I'm thinking about getting Iridium plugs instead of the copper ones.

-> Do the Iridium plugs have a longer life than the copper ones? Are there any other advantages?

-> Will they cause any problems with my engine? I don't plan on running any kind of FI or Nitrous (heard they cause problems with that), will I be oK with these?

THanks
Mark

 

They are supposed to last a lot longer than the regular NGK copper plugs, such as the TR-55.
They are also supposed to have less voltage requirement to produce the same amount of spark as the copper ones.
Supposed to have a wider heat range.
I'm going to try them next time i change the plugs.

 

How much longer do they last? I might be able to justify spending the $8 apiece if they last for like, 70-100K miles.

They don't cause detonation on NA motors, do they?

<img border="0" alt="[Firebird]" title="" src="graemlins/formula.gif" />

 

TTT...what's the average life on Iridium plugs?

<img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />

<small>[ April 26, 2002, 08:26 AM: Message edited by: squirrels ]</small>