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 Post subject: Valve cover torque
PostPosted: Mon Jan 02, 2023 11:41 am 
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TBI Slant 6

Joined: Thu Sep 15, 2022 12:00 pm
Posts: 142
Car Model: 1963 Plymouth valiant
According to my manual, I need to torque my valve cover bolts to 40 Foot pounds. That seems like a lot..... I always thought that those covers can distort easily so
not a lot of torque was needed. Thoughts?


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 Post subject: Re: Valve cover torque
PostPosted: Mon Jan 02, 2023 12:56 pm 
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Supercharged
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Joined: Sat Feb 16, 2008 1:25 pm
Posts: 5611
Location: Downeast Maine
Car Model:
The torque for valve cover bolts is 40 in-lb. This number is located in "225 cubic inch Engine" section, "Cylinder head installation" near the end of last paragraph. Tighten cylinder head cover nuts to 40 inch-pounds.

40 in-lbs = 3.3 ft-lbs.

Before installing the valve cover, check the bolt hole flange for flatness. Sometimes bolt holes will be stretched or deformed from previous over tightening, and require a few light taps with a hammer to correct the problem.

I use a nut driver to hand tighten these nuts or bolts.

Over tightening will damage a cork gasket, and it will never seal.

_________________
67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

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 Post subject: Re: Valve cover torque
PostPosted: Mon Jan 02, 2023 1:33 pm 
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TBI Slant 6

Joined: Thu Sep 15, 2022 12:00 pm
Posts: 142
Car Model: 1963 Plymouth valiant
Ahh, thank you


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 Post subject: Re: Valve cover torque
PostPosted: Wed Jan 04, 2023 5:21 am 
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Supercharged
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Joined: Wed Oct 12, 2005 9:00 pm
Posts: 2992
Location: kankakee IL
Car Model: 80 volare, 78 fury 2 dr, 85 D150
I don't think that I've ever used an actual torque wrench on a valve cover.
And for that low of reading don't "convert" the reading to a ft /lb tq wrench, as that's too low for most to even register.


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 Post subject: Re: Valve cover torque
PostPosted: Wed Jan 04, 2023 6:12 am 
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Supercharged
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Joined: Sat Feb 16, 2008 1:25 pm
Posts: 5611
Location: Downeast Maine
Car Model:
I posted that 3.3 ft-lbs number to show just how little torque is needed to snug down a valve cover. Most folks can envision exerting a 3 lb force on a one foot wrench, or twice that on a six inch long wrench. 40 in lbs, not so obvious to ones wrenching hand.

_________________
67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

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