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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 05-23-2013, 08:48 AM
chopin1012 chopin1012 is offline
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Spark Plug Help

I've searched this forum and a few others and have come up with different answers.

2006 BMW 330i N52 engine: yes or no to antiseize on spark plugs? Dielectric grease on spark plug ceramic?

Using NGK ILZFR6D11
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Old 05-23-2013, 09:04 AM
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thekurgan thekurgan is online now
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BMW TIS specifies NO anti seize and ungreased.
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Old 05-23-2013, 09:32 AM
chopin1012 chopin1012 is offline
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Thanks so much!
I'm assuming 30nm is correct for torque?
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Old 05-23-2013, 09:38 AM
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thekurgan thekurgan is online now
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Quote:
Originally Posted by chopin1012 View Post
Thanks so much!
I'm assuming 30nm is correct for torque?
I think on the aluminum head, it's 23nm ~ 17 ft-lbs. You'd be best to buy or rent a torque wrench in the lower area, like in inch pounds or one from 10-80 ft-lbs. Using one that starts at 20 ft-lbs won't work.

http://www.amazon.com/Neiko-8-Inch-F...rque+wrench+10
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Old 05-23-2013, 10:11 AM
Watchme Watchme is offline
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Eh with spark plugs it's usually better to follow "number of turns" after flange contact method. spark plug itself should have this spec.
your torque is going to be off if oil got on the htreads - or other lubricants.
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Old 05-23-2013, 10:21 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by thekurgan View Post
BMW TIS specifies NO anti seize and ungreased.
+1

Conflicting posts? It's spec'd by BMW and very well known....
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Old 05-23-2013, 10:51 AM
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thekurgan thekurgan is online now
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Quote:
Originally Posted by CALWATERBOY View Post
+1

Conflicting posts? It's spec'd by BMW and very well known....
I think the Bentley manuals still quote anti seize for some odd reason ; use of a torque wrench is mandatory on an aluminum head, however, Bentley enforces this as well.
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Old 05-23-2013, 12:03 PM
chopin1012 chopin1012 is offline
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Thanks for all the responses. I've seen people recommend in posts on other forums to use anti seize, but don't have the Bentley manual yet. Thanks for the clarification.

I already own a small torque wrench in lb/in, so I should be good on that. I'll also double check the package for number of turns.

I should have it done tomorrow morning.
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Old 05-23-2013, 12:07 PM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by thekurgan View Post
I think the Bentley manuals still quote anti seize for some odd reason ; use of a torque wrench is mandatory on an aluminum head, however, Bentley enforces this as well.

You're right!

"Lightly lubricate new spark plug threads with copper based anti-sieze compound."

Bentley recommended spark plug to head torque: 23 +-3 Nm or 18 +-2 ft lb

And now I've forgotten my ref not do lube. Anyone got this from BMW?

Do have THIS from and for NGK plugs recommended by BMW....maybe that's it....
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Old 05-23-2013, 12:17 PM
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Quote:
Originally Posted by CALWATERBOY View Post
You're right!

"Lightly lubricate new spark plug threads with copper based anti-sieze compound."

Bentley recommended spark plug to head torque: 23 +-3 Nm or 18 +-2 ft lb

And now I've forgotten my ref not do lube. Anyone got this from BMW?

Do have THIS from and for NGK plugs recommended by BMW....maybe that's it....
It's in the T.I.S. but I don't have it on my office laptop.
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Old 05-23-2013, 12:27 PM
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boramkiv boramkiv is offline
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The problem is the over oiling. I've seen people just coat the threads with anti seize throughout.
N52 motor for me with NGK plugs, I lightly coat them, and don't coat the first two and last two threads.
I forgot the torque for the N52 motor with oil.
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Old 05-23-2013, 12:39 PM
Watchme Watchme is offline
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Quote:
Originally Posted by CALWATERBOY View Post
You're right!

"Lightly lubricate new spark plug threads with copper based anti-sieze compound."

Bentley recommended spark plug to head torque: 23 +-3 Nm or 18 +-2 ft lb

And now I've forgotten my ref not do lube. Anyone got this from BMW?

Do have THIS from and for NGK plugs recommended by BMW....maybe that's it....
And once again, this confirms my suggestion of not using the torque wrench, but instead "install based on vehicle manufacturer’s torque angle". This goes back to the issue of torque spec being based on static thread friction, where ANY oil/anti-seize will force you into dynamic friction and torque specs are out of the window. Be gentle on those aluminum heads.
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