just curious as to what everyone runs/suggests. brand (obtainable in the u.s.), generation (1st, 2nd, or 3rd), heat range (autox and gas guzzler), etc.

 

I run NGK's in mine

 

I run platinum FD trailing plugs all around... I wanted something colder back when I was mysteriously breaking trailing plugs last year (due to messing around with advanced timing settings...) Whether this actually provides any advantage whatsoever, I don't know, but no problems yet

 

i am running stock Nippon Denso. I think they are a better built plug then NGK. Look at them side by side. Also SilverRocket how do you break plugs by advancing the timing.

 

I have broken 3 trailing plugs. The part of the plug that breaks is the white ceramic around the center of the plug. It's dangerous as hell because although the pieces often get caught inside the plug, it's easy for them to get inside the motor and cause havoc.

This was with my stock Nikki carb with all emissions junk taken off it and one or two little mods, RB exhaust, electric fan, and Yaw's timing advice of 24L 16T.

I don't know much about it, but here is my theory:

My stock carb jetting was causing me to run a little on the lean side during certain operating conditions. Advancing the timing so severely was causing my engine to run hotter and perhaps causing mild detonation that I was not aware of. My plugs were heating up beyond their rated capacity to dissipate heat properly. The result of all this is that they break.

I'm not really sure I'm right about the reason, but I know that several others have reported the same problem. I don't think this should be the case if all else is right - correct mixtures, new motor, good ignition system, etc. But with a stock carb, it's pretty hard to know what's going on there... unless you're sure, I think the Yaw suggestion is too aggressive for the average person with a fairly stock car. That's just my experience, others have different opinions.

 

any others?

 

I use the NGK,s as well

 

NGK =)

Are bosch platinums good?

 

i use NGKs
but i'm thinking about experimenting a little with others

 

i was thinking of trying 3rd gen plugs. if anything they look cool

 

They look different?

(Directfreak showing his true ignorance...)

 

i use the 2nd gen NGK's in mine, the leading and trailings are different and they seem to run better than the first gen ones.