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PostPosted: Thu Jan 02, 2014 10:59 am 
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TBI Slant 6

Joined: Mon Aug 22, 2011 11:03 am
Posts: 204
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Yes, this is going on the assumption that there's no such thing as a stupid question.

Curious, though, what kind of torque I should use for tightening the spark plugs in a spark plug-tubed head?

I always seem to have leaks there, new seals or not.

Thanks!

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PostPosted: Thu Jan 02, 2014 12:47 pm 
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TBI Slant 6

Joined: Sat Dec 19, 2009 11:07 pm
Posts: 245
Location: ross county,ohio
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Ahhh good ol drool tubes. I have seen very few that didn't leak.

If I'm not mistaken you have the crush gasket type spark plugs.
Normally I just turn them 1/4 turn after I cant turn them by hand

I'm sure that's not the "correct" way to do it, but it has worked so far.

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PostPosted: Thu Jan 02, 2014 1:13 pm 
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TBI Slant 6

Joined: Thu Dec 06, 2012 11:50 am
Posts: 160
Location: Thousand Oaks, CA
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For all my spark plugs I've always hand tightened then just a little bit further with a breaker bar or torque wrench.

Don't forget to remove the washer from the spark plug before installation.

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 Post subject: Thanks!
PostPosted: Thu Jan 02, 2014 6:21 pm 
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TBI Slant 6

Joined: Mon Aug 22, 2011 11:03 am
Posts: 204
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Thanks, guys. I always do the washer thing.

Maybe I'm going a little tight. I'll try finger tight and then a bit tighter with a socket.

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63 Plymouth Valiant V200 Convertible.

225, HEI, Super Six with 38/38 Weber, Electric Fans, Scarebird discs, FirmFeel front swaybar.


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 Post subject: Pinkie tight...
PostPosted: Thu Jan 02, 2014 6:27 pm 
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Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9760
Location: Salem, OR
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Quote:
I'll try finger tight and then a bit tighter with a socket.


My grandfather always told me that if I didn't have a torque wrench on a mopar to finger tight them in place, then use the 3/8" ratchet and plug socket and use your pinkie on the handle to cinch it in place (it's about 10 ft lbs...of course I have built up my muscles since then, so I have to watch it or I'll do 35 ft lbs with the twist of the wrist...)

:lol:


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PostPosted: Thu Jan 02, 2014 9:37 pm 
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Turbo Slant 6

Joined: Wed Jun 13, 2012 4:39 am
Posts: 519
Location: Australia
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I know some people don't recommend it,but I use a smear of silicone around the o rings to seal them up,works fine for me. As for torque,all good advise in above posts,cheers.


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PostPosted: Thu Jan 02, 2014 11:25 pm 
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Joined: Sat Feb 08, 2003 2:37 pm
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Location: CA
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I doubt too tight is your source of leaks.

I don't see what the big deal with using silicon at that point is. Heck why not just a fat bead of silicon with no ring? It's not under pressure, just drip. Just have to be careful removing them next time so none falls in.

I generally have good luck with new seals. Use fancy plugs so you don't have to be fussing with them as often. Seems they seep once they get repositioned.


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PostPosted: Fri Jan 03, 2014 12:11 am 
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Turbo Slant 6

Joined: Wed Jun 13, 2012 4:39 am
Posts: 519
Location: Australia
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Pierre wrote:
I doubt too tight is your source of leaks.

I don't see what the big deal with using silicon at that point is. Heck why not just a fat bead of silicon with no ring?

I'm with you,not sure what the big deal is,done it all the time as a standard deal when fitting them,but there was a post a while back ,can't really recall the points against it,but some were pretty passionate about not doing it. At the end of the day it works!


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PostPosted: Fri Jan 03, 2014 12:12 am 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13008
Location: Fircrest, WA
Car Model: 76 D100
I always put a bead of RTV sealant around the drool tubes when I install them with new gaskets.

Torque on spark plugs? Snug. 8)


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PostPosted: Fri Jan 03, 2014 8:16 pm 
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TBI Slant 6
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Joined: Fri Feb 22, 2013 10:28 am
Posts: 201
Location: IL
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FSM says 30 ft.-lbs., right?

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PostPosted: Sat Jan 04, 2014 1:24 pm 
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Supercharged
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Joined: Sat Feb 16, 2008 1:25 pm
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Location: Downeast Maine
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Quote:
FSM says 30 ft.-lbs., right?


Same as my 1967 copy...

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PostPosted: Sat May 14, 2022 3:32 pm 
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1 BBL (New)

Joined: Sun Sep 12, 2021 5:44 pm
Posts: 1
Car Model: Duster
I’m not surprised so many people call the spark plug tubes ‘drool tubes’. 30 ft. Pounds is needed to adequately pull the tube tight enough for the gasket to actually seal against the head. 30 ft. Pounds would be a lot if these were aluminum heads however that isn’t too much torque for a steel cylinder head like on the slant.


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