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Thread Topic: A DIFFERENT antiseize paste on spark plug threads? Threaded

   
Date: 7-13-08 08:51
From: TonyB
Subject: A DIFFERENT antiseize paste on spark plug threads?

I have read the archives on this subject and do not need to be reminded that some manufacturer's recommend and others don't. PaulW loves CU antiseize while others may prefer silver paste or moly. I recently read some newer opinions on this subject which I have not seen addressed here as they might apply to 02's and E3's and E21's, etc.

I was working on a R75 and reading another forum where it was stated with seeming authority that once you use antiseize paste on sparkplug threads, the antiseize becomes impregnated into the aluminum cylinder heads, in effect compelling future use of antiseize. This expert also states the [BMW motorcycle] factory torque settings are way to high if the plug threads are coated with antiseize and that a torque wrench for such low torque (12-18 ft.lbs.) is not only unnecessary, but probably inaccurate if the wrench is rated to 75 or even 100 ft. lbs.

The above opinions seem to be rooted in common sense. Consequently, I have even pulled out my old AT inch pound torque wrench. But since I am using antiseize, should I be torquing the plugs as low as 12 ft. lbs? Also, if one uses antiseize without chasing the threads, the antiseize paste builds up over time and even carbonizes (I think) because, after all, the carrier for the paste is probably oil. What about the hazards of mixing (unknowingly) different antiseize mixtures?

Any thoughts? What do you guys who actually work on these things on a daily basis do? If you know, does Mercedes, Porsche or even Ferrari have any specific recommendations along these lines?

Thank you.



Date: 7-13-08 12:54
From: Clydeg in Little Rock, AR View user's profile
Subject: Re: A DIFFERENT antiseize paste on spark plug threads?

the old school stuff I learned while working on Aircraft radial engines was to use Magnesium Carbonate (aka: milk of magnesia) it has not failed me in over 40 years.
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'73 2002 "Gretta"
'70/75 2002 "Wilhelm" aka "Slick Willie"
'74 widebody with schnitzer flares "Brigette"
'75 parts car

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Date: 7-14-08 09:52
From: landon in New Castle CO. View user's profile Send e-mail
Subject: Re: A DIFFERENT antiseize paste on spark plug threads?

I have used graphite lube ( such as lock-eze) on plugs since my first 1600 in 1981. Threads are clean upon removal. Never a problem.



Date: 7-14-08 09:53
From: Rooney
Subject: Re: A DIFFERENT antiseize paste on spark plug threads?

Clydeg wrote:
the old school stuff I learned while working on Aircraft radial engines was to use Magnesium Carbonate (aka: milk of magnesia) it has not failed me in over 40 years.


I forgot all about this and have been using the commercially available pastes. I used to go to the trouble of letting the liquid dry before bolting things up. Is this really necessary?

Thanks



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