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Topic I'd rather use it, but the concern might be |
Sparkplug replacement - tightening -real world Petee_C - Thursday, 13 October, 2011, at 2:26:08 pm |
Maybe the torque wrench is no good? Or the extension is weak or the ends are worn... MarcW - Thursday, 13 October, 2011, at 3:49:53 pm |
Quote
Petee_C
It's not rocket science, but I still have a couple questions.
Yesterday, due to an unfortunate work situation, I have a bunch of time on my hands for the next while. I've got plugs and tubes ordered during the summer and decided to install them today with my new free time....
Pedro's tip with the boat plug worked well, after i read the whole thing and cut the lip off of the plug (I was able just to spin it to break the seal, no leverage needed.)
1. My 3/8" torque wrench doesn't fit well, and maxes out at 29Nm. Fine. I can just do a little wiggle more than the click to get to 30Nm. However, when I go to tighten it in the one spot where I can actually swing the ratchet, it seems to be turning a bit more than I'd like. I wonder is it because I have the extension and the wrench in on an angle to get any type of torque on the end, and the spring isn't clicking. I put a 19mm socket on the end and try the wheel lug on the otherside, and 29Nm appears to be about 3 finger strength.
2. Bentley doesn't mention antiseize, Neither does Pedros Garage. Pelican Parts website says no antiseize. I have always put a tiny dab of antiseize on the threaded part of the plug. Could this be an issue?
3. I took my nice 3/8" composite ratchet and checked snugness. Seems fine to me.
I am thinking that 1/4-1/3rd turn after hand tight should be good for the plug, and continue with the antiseize.?
Thx,
Peter - currently unemployed......
PS. To make matters worse, there is a inner driver side ripped CV boot staring me in the face...... argh.....
How does anti-seize on a spark plug hurt the O2 sensor? Boxsterra - Thursday, 13 October, 2011, at 4:31:06 pm |
I'd rather use it, but the concern might be Laz - Thursday, 13 October, 2011, at 5:43:46 pm |
Antiseize affects metal to metal contact... bar10dah - Thursday, 13 October, 2011, at 9:03:54 pm |
Re: Antiseize affects metal to metal contact... BoxsterBob - San Carlos - Thursday, 13 October, 2011, at 9:11:58 pm |
Interesting contention: Better heat sinking without anti-seize, I suppose, but... Laz - Thursday, 13 October, 2011, at 9:45:29 pm |
Im sure it does. But 30 years of using it suggests it doesn't really matter *NM* grant - Friday, 14 October, 2011, at 11:11:35 am |
The anti-seize is a contaminant and will foul/coat the hot O2 sensor tip. There's no need to... MarcW - Friday, 14 October, 2011, at 2:00:10 pm |
Is it a soft alloy plating on the thread? *NM* Laz - Friday, 14 October, 2011, at 3:38:42 pm |
Nice theory, but i've seen M96 plugs seized. So the theory is contradicted by clinical facts. grant - Friday, 14 October, 2011, at 9:50:31 pm |
The plugs can be seized if the plugs are left in too long. Porsche generally has a plug change... MarcW - Sunday, 16 October, 2011, at 12:44:33 pm |
All possible, but i use the data i have available. grant - Monday, 17 October, 2011, at 11:56:56 am |
Re: Sparkplug replacement - tightening -real world dghii - Thursday, 13 October, 2011, at 10:19:03 pm |
After hand tightening, a half turn or so might be a bit much. My experience is more like 1/4 turn. Laz - Thursday, 13 October, 2011, at 10:39:11 pm |
snug then 1/3 turn will compress the washer and work fine *NM* old timer - Friday, 14 October, 2011, at 10:29:06 am |
With everything clean and unworn, 1/3 sounds about right and likely the maximum necessary. *NM* Laz - Friday, 14 October, 2011, at 10:34:44 am |
My similar experience on several cars... grant - Friday, 14 October, 2011, at 11:09:50 am |
And a slight loss of compression*. You might hear a "phht-phht" sound if it's leaking. Laz - Friday, 14 October, 2011, at 11:22:33 am |
Man, we know our spark plugs! dghii - Friday, 14 October, 2011, at 10:30:36 pm |