I was looking at the on-line Champion spark plug listing for their Iridium plugs. Found some interesting stuff so I revised my Spark Plug Chart (see pic) to show the Iridium part numbers by year.

What I found interesting is that the Iridium plugs are the same from 1991 to 2001 - heat range 12. Also, that the 1991 and 1992 Champion Copper plugs changed from RC9YC to RC 12LYC.

I bought a set of RC12WEPB5 plugs to try out in my '99 just to see what difference they make from the NGK ZFR5N plugs I currently use - probably nothing.

 

Get your Taylor wires yet?

 

Pick one.
http://www.jegs.com/webapp/wcs/store...1&YEAR=1656522

 

I was looking at them on Summit's site. Once in a while they offer free shipping. I'm so tight my a-hole squeaks so I keep looking around for a good deal.


Didn't think about Jeggs.


No...I haven't got them yet.

 

Well, so much for those sorry a$$ Iridium plugs. I put a set in the other day and my motor went nuts. Took it on a mini tour around the hood until the oil got good and hot then pulled in the driveway and popped the hood. The motor was shaking and rattling/clanking like mad. Shut it down.


Today I pulled the POS plugs. The ground electrodes were white like they were over heating. Maybe that was the clanking I heard....detonation.


I put a new set of NGK ZFR5N plugs (like I have been using) back and now the motor runs normal.


I deserve to be slapped for leaving the NGK fold to begin with.


That's TracyK. LOL

 

i can't stand that champion junk.. ran autolite for years and now i like NGK

 

NGK all the way.