do i need to gap my NGK TR55's??
 

Ive heard that you do and that you dont... :confused:
I bought some to upgrade from stock plugs...
should I gap them or do they come coorect..
ALSO
how often do you have to replace the plugs on a daily driven camaro ss

thanks

I just popped mine in. Everything turned out okay. But maybe I was lucky?

.055, most people swap the tr55's out once a year ... or ever 15-20k

you shouldnt need to gap them but you do need to check to make sure they are correct

The TR55s come out of the box around .059" but you'll get better results bringing them down to .050"

I like to change mine every 6 months, or roughly every 10k

thanks guys! how bout this...if i go with the iridiums from NGK, will they last a little longer so I can avoid switching them every year or so??
Thanks

Yes the iridiums will last alil bit longer. I'm not sure as to how much longer tho, I dont' have much experience w/ them

Wow. There is no way I would change my spark plugs twice a year. Maybe if they were easy access but considering it takes an hour to replace the #8 plug (and you have to be underneath the car) I would have to pass on the semi annual plug change.

What I want to know is why you would need to? I have always heard (until this thread) that plugs last 100K miles these days. I bought my car with 45K miles and replaced the plugs and wires at 70K. And I thought that was overkill. I wasn't planning another change until at least 110K on my clock.

Platinum plugs last 100k, the iridiums are somewhere close to that I think. Personally I'll stick w/ the NGK's, b/c I've felt the difference between the NGK tr55's and the Bosch Plat +4's. It was night and day. Throttle response was 10x crisper, and she cranked up instantaneously when I turned the key, very crisp. Where as w/ the Plat+4's there was a lag in throttle response as well as it kind of gradually started ... almost like the engine was starting 1 cylinder at a time, now its all 8 w/a turn of a key.

And I get ancy pretty easy, I always have to be doing something to my car or be planning on something. So spark plugs once a year helps w/ my problem :jest:

It's true, plugs on modern engines do usually last a long time, however I do notice a slight difference once my plugs get some miles on them, so that's why I like to have fresh plugs in there so much. Besides, a plug change on my C5 only takes me 45min, not even rushing, it's super easy. Actually, even when I had my 98 Formula I could do it's plugs in 45min too. I've got skinny arms though, so plug #8 wasn't too difficult for me to reach from up top.