jlrz28

iTrader: (7)

Just thought I would pass on some info

http://www.ngksparkplugs.com/pdf/TB-...1antisieze.pdf

ZeeOSix

I saw that NGK Tech Bulletin when I changed my plugs last fall. I decided to use a small amount of aluminum head spark plug anti-seize anyway, and torque to the service manual spec of 11 ft-lbs. When they torqued up they seemed just fine - ie, they snugged up quick and 11 ft-lbs gave them just a little more rotation.

99Bluz28

iTrader: (35)

Good to know, I guess I don't have to worry anymore about getting Anti-Seize on my hands or cloths the next time I change spark plugs.

projectX

iTrader: (51)

Hmm I put it on mine...

dr_whigham

iTrader: (49)

Damn. Guess I better change mine out. I used anti-seize, pretty sure I far surpassed 11ftlbs too. By A lot. I use German torque specs for damn near everything.

I guess the TR55's have the special coating....

Also, I see the compressed gasket in the bulliten. We don't have that, as we have tapered plugs. I wonder how that affects things, if at all.

sabersaw30

iTrader: (10)

I love anti seize always used it never had a problem.I barely put pressure on my plugs though no where near 11 ft lbs.That just seems way to tight.

arob987

iTrader: (9)

never used anti seize with mine just get them snug them then bout a quarter to half turn

ZeeOSix

What torque spec are you using?

ZeeOSix

11 ft-lbs is the factory service manual spec. Doubt it's really too tight.

ZeeOSix

A quarter to half turn past snug is way more than 11 ft-lbs. With the tapered spark plug seat, like used on the LS engines, the NGK box says:

Tapered Seat with Aluminum Heads
7 to 14 ft-lbs (note GM spec of 11 is mid-range)
or
Hand tight (snug) + 1/16 to 1/8 turn

In this case, "hand tight (snug)" means when the taper on the plug just seats in the head by finger tightening.

arob987

iTrader: (9)

sorry guess i shoulda specified what snug is.i think snug varies to different people.yours is explained more and sounds correct.

Grimes

iTrader: (3)

I usually grab the ratchet more towards the center when tightening the plug down, reducing the torque I'm actually putting on the plug. No problems ever, with any of the cars I've done.

joecar

11 ftbs is 1/8 of a turn or less from when the plugs taper touches... they need to be barely snug, they will stay in.

I still would use a small amount of antiseize.

Paul Bell

iTrader: (9)

I've been using light oil on my spark plug threads for over thirty years and never had a problem using the TaH torque method.

buschmec

we change plugs every pass when tuning in our big motors(780",706"), probably 70 sets or more last year. always with antiseize and never once had a problem. you can feel the gasket compress if you take your time.......plugs from the bulletin look like someone didn't know wtf they where doing.......

wav3form

iTrader: (1)

They should just put out a revised torque spec when using a lubricant on the threads. I always use anti-size and hand tighten and never had any issues... the pics look like the guy used a breaker bar to tighten the darn things.

tillery

iTrader: (4)

Ive never used anti seize where anything needs to be torqued. Like paul bell said. A light coat of clean oil is fine. Anti seize cakes up when the oils fall out of it. And of course improper torque.

ZeeOSix

Lubricating with oil is going to change the torque spec basically the same as using anti-seize. Even if the torque changes by 10% or 20%, when torquing to 11 ft-lbs that's only 1~2 ft-lbs off. Still within the 7~14 ft-lbs that NGK specs for tapered plugs.

I'm looking at the package of some Permatex (Loctite Corp) anti-seize and it says to torque to manufacture's specs ... so apparently they are not worried about the torque spec being very far off when using the anti-seize.

batboy

iTrader: (6)

Someone asked what German torque specs are: "Guudentite" (good and tight).

91sonomast

I hold the ratchet with my thumb around the head and my hand has about 3-4 inches of the ratchet in it is all and tighten pretty firmly. They make spark plug ratchets, little stubby dudes only about 5 inches long total.