xxtheshockerxx

Hey Guys. I got my bosch iridium plugs in the mail yesterday from the contest on this site. I was wondering how hard the back 4 plugs are to reach? and should i use anti-seize on them or not?

Thanks everyone

TheJPGXP

I got mine out with no issues.

06MonteSS

do NOT use anti-sieze or anything on spark plugs!

xxtheshockerxx

good to know i was unsure if i should or not thanks Lew

1BAD06MCSS

beware they are a bitch and a half to get out. I would remove the rear coil packs to gain more clearance. This is how I installed my NGK's.

vroom_vroom

iTrader: (5)

Congarats on the win, but be careful with that brand if plugs would not be the first time I have sceen a insulator brake off and hold a valve open when a pistion is coming at it , dunno it this is still the case

xxtheshockerxx

i am pretty leery about bosch plugs in general. My dad had some in his truck that WOULD NOT come out. took him 4-5 weekends of messing with them to finally get them out. So thats why i asked about anti-seaze

Brian396

iTrader: (3)

Why not?

06GrandPrixGXP

i was told to put anti sieze on the tr6 cuz their steel and we have aluminum blocks and i guess they get stuck?

xxtheshockerxx

i am not sure. I have heard that it is a bad idea to anti seize and have heard the same thing 06GrandPrixGXP said

06MonteSS

The plugs have a coating on them, which is usually silver, sometimes with a greenish or golden tinge to it, it`s not bare metal (dark or black in color)

Why not use anti-seize compound?

1 - you can easily over torque it and deform it without even knowing or even worse pull the aluminum threads right out of the head. Dry and Wet torques are totally different installed values.

2 - if any manages to get to the insulator or tip shorting/misfire will occur.

3 - it acts as an insulator and prevents proper heat exchange between plug and head/water jacket.

06MonteSS

you can find the good NGK plugs for our cars, at ls4store.com

06GrandPrixGXP

my uncle said as long as you use a torqe wrench it should be okay

Ill_Born_ss

WET verses DRY thread torque

When applying torque to a dry thread more friction is created. With less friction (wet threads)the threads stretch more before the desired torque is reached.
(example: a dry thread torqued to 10lb ft is 10lb ft, the same thread wet will click the torque wrench at 10lb ft but in fact it is 12 or 13lb ft)
Using thread lube, anti seize, oil or other lubricants all differ in the actual friction loss. One must understand that WET threads require less torque than DRY threads.