gordosoar

What else can be used on plug threads besides anti-seasure stuff.?
Tks,
G

C6 Snowboarder

possibly lanolin

http://www.inoxmx.com/inox/mx4-grease/

Bruze

Why do you "need" anything on them?

FWIW: I've never used anything on plugs, never had a problem removing them even in aluminum heads. But I only snug them up enough to compress the washer, never tighten too much --supposedly that can distort the gap (maybe an old wive's tale, but I've heard that since I was young) and maybe a side benefit is that they come out without a problem.

gordosoar

I think I saw someone use synthetic motor oil on them but I'm not sure.

Not So Fast

A/C Delco told me "NOTHING", they have a special coating on them nowadays to prevent seizing.
And torqueing them down takes very little pressure, 11 ft lbs comes up with little effort. They don't have "crush gaskets" anymore.
NSF

KB9GKC

gordosoar

Thanks for all that.
I guess I'm living in the past where all that stuff was recommend.
G

Dano523

Yep, if you are going to install them, and not pull them for 100K until they need to be replaced again, nothing is needed since they come pre-coated.

If you are going to pull the plugs say every 30k and re-gap and clean them instead, then standard anti-seaze will work once they are pulled and reinstalled.

Lastly, do not remove or install the plugs until the head are bone cold, hence let the engine completely cool down before you work in it. Failure to do so, could end up with your stripping the spark plug channels out of the heads.

Not So Fast

Yep, I forgot about the COOL ENGINE part, thanks
NSF

gordosoar

Yep, cleaned the engine today before putting her back in the garage until tomorrow when I will pull the plugs and install new plugs and wires.
Thank.
G

mikeCsix

If you can squeeze a torque wrench in there, I highly recommend using one to tighten the plugs. It's amazing how little torque is needed these days. 11ft-lbs is 121in-lbs, so the torque wrench doesn't have to be very big.

If you were to coat the plugs with never-sieze or lanolin, you'll screw up the torque values too and end up over torquing the plugs, further risking thread damage in the heads.

Don-Vette

I use Bostich high temp Nickel antisieze.

WW7

I have had trouble getting plugs out that were "Pre Coated" from the factory... I use just a small amount of "Loctite anti seize stick" on the threads, not enough to make a mess, just enough to fill some of the lower threads... Just a little extra insurance that the plugs will come out easy...WW
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gordosoar

I thought 11 foot lbs was equal to 171 inch lbs.
if I'm wrong,, my plugs are over torqued.

Oh crap,, I just checked it and it's 132 inlbs ,,, now what?

Corvette_Ed

Get the torque wrench out and pop the hood. Time to make an adjustment.

Bruze

It's not that critical. "Snug" is good enough. A bit over won't hurt anything.

IMO, people are over-using torque wrenches today. Outside of engine assembly or maybe a few other areas, they aren't needed. You should be able to "feel" how tight a bolt should be.

mikeCsix

My bad, 11 ft-lbs is 132 in-lbs. It still isn't a lot of torque. Since it isn't much, I like using a torque wrench to set such sensitive values.

mikeCsix

With Mercedes, nearly every fastener has a torque value. Once I started working on them, I tried to guess the torque I was placing on fasteners and found I couldn't come close. With so much aluminum in the Corvette, I'm not willing to guess how tight the fastener feels, I want to know how tight I've torqued it to.

Not So Fast

Maybe this will help, courtesy of the internet What would we do without it,
LS 3 torque specs
NSF
http://paceperformance.com/files/pdf...rque-specs.pdf
PS just noticed they state a different value for new plugs VS old plugs

WW7

On my 89 corvette I use the torque wrench on the intake manifold and the heads, most everything else is by feel.. With plugs I go until they stop , then give them a little bit more and they're fine. There's no room for a torque wrench most of the time.....WW