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-   -   quick 3X plug question (https://www.fordbarn.com/forum/showthread.php?t=236913)

1930artdeco 01-10-2018 01:03 PM
quick 3X plug question
 

Hi All,

I just installed, but can uninstall if need be, some new 3x plugs. The washer that came with them is concaved. I installed them so the washer would flatten out when tightened. Is this correct?

Mike

1930-Pickup 01-10-2018 01:31 PM
Re: quick 3X plug question
 

The gasket will take the shape of the head/plug interface, which in this case should be flat. You should be fine, but retorque them after a few miles just to be sure.

BILL WILLIAMSON 01-10-2018 02:56 PM
Re: quick 3X plug question
 

"Rule of thumb" for plug torque is 25 Ft Lbs.
Bills' Specs

burner31 01-11-2018 10:31 AM
Re: quick 3X plug question
 

So...

1: Concave up, flat down
or
2. Concave down, flat up

Feedback?

katy 01-12-2018 10:34 AM
Re: quick 3X plug question
 

Quote:
Originally Posted by 1930artdeco (Post 1577277)
Hi All,

I just installed, but can uninstall if need be, some new 3x plugs. The washer that came with them is concaved. I installed them so the washer would flatten out when tightened. Is this correct?

Mike
Either way should be OK.

burner31 01-13-2018 10:00 AM
Re: quick 3X plug question
 

Answer to post #4 is:

2. Concave down, flat up

BILL WILLIAMSON 01-14-2018 07:37 AM
Re: quick 3X plug question
 

UNIFORM Torueing is MOST important, since plug HEAT is dissipated through the threads & gasket contact area. Make sure the head surface doesn't have paint build up.
Bill W.


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