Ok, I've changed 1000 plugs in my lifetime.... litterally.
But, I know there are some idiosyncrasies associated with a COP system.
Anyone know a link to a s197 plug how to??

 

I cant find one off hand, but dont fork up, haha, not a good situation...

 

It's on here somewhere. Do a seach... I found a link here about six months ago. All that I remember is that it would be a real PIA.

 

I've looked...
There are post about ppl's boo, boo's and ut-ohs but nothing step by step.?

 

I don't have a step by step, but it's pretty simple. Disconnect COP connector, remove COP screw, pop COP off plug, remove plug (you might want to make sure the whole is clean first), replace plugs with new plugs, and put COPs back on. When I last changed mine, I showed my wife how to do one, and she did the rest.

Oh... here is a little guide on the COPs.


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I changed mine and like Don said it's not bad. Blow the hole out before you remove the plug itself. Also the hole is pretty deep , so I picked up an extra long socket ...

 

Cool, I'll get to it tomorrow, and report back.
Hopefully good news!

 

Just wondering, but why are you changing plugs? Your sig doesn't list any mods, and I doubt you have driven 100,000 miles yet, which is the recommended change interval.

 

I know the manual says 100k but i sure as hell am not going to wait that long....i have almost 25k on mine now and planned on doing it at 30k probably. You should atleast remove and check them every 15k or so especially if you modded at all

 

On another forum, he stated he was adding nitrous and going to the HT0 plug.

 

Well that makes sense then. I plan on waiting until at least 75-80K to change mine. The platinums they put in at the factory will last a looooong time. Much much longer than regular plugs, especially regular plugs in older cars that are not nearly as clean burning as the new 3V 4.6.

 

I plan to change mine @ 50K miles, but I'm conservative. Plugs should be changed with a stone cold engine. Use anti-seize on the new plugs. USE A TORQUE WRENCH.

 

I have ALL the "safe" mods. UDP's, Delete Plates, Intake, Gears, Tuner.... Enought to get me into the very low 13's.
I decided to take the leap and add a little laughing gas to my combo. I want to get well planted into the 12's and I'M DONE, I MEAN REALLY DONE!!!!
Besides, I am already faster than I am supposed to be in a vert, without a roll cage. So far no track personel have called me out on it yet. I do wear a helmet.
I already get pinging when I put the wrong 93 octane in my car .
So I figure I should probably lower my heat range on my plugs as well as run a new tune from Bama, Brenspeed or Tillman. I am even kicking around the idea of running a Hypertech 160 degree thermostat???

 

They don't come from the factory with any anti-seize compound and they were already hard to remove when I changed mine. If I had waited to the 100K mark they would have been even harder to remove. You sure don't want to break one off removing them ...

 

and make sure you don't overtighten them.. those socket threads are a bit fragile, or so i heard

 

Thank you all for the input.

 

How to: remove cop and old plug, install new plug and cop.

So easy a caveman can do it.

 

autolite HTO are colder than stock. Mostly for turbo and S/C applications. If you run 87 in a S/C car you will destroy the plugs in MINUTES(I did it)

 

I plan on continuing to use 93 octane.
When I decide to use the Nitrous, i will roll my SCT tune back to 87. (but still using the 93 gas).

 

HT0s are not needed for N/A or Nitrous. If you're running boost, then you might want to have them (I do).