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57dodge
Valve cover stud torque


I am changing the valve cover stud on a 1957 Coronet 325. the old one is clogged does anyone know the torque on the nut that holds the rocker assembly, I assume its the same as the the rocker hold down bolts.
Thanks
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on: Thu 24 of Apr, 2014 [03:17 UTC] reads: 16194

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Jack
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Re: Valve cover stud torque
on: Sat 03 of May, 2014 [16:24 UTC] score: 0.00
Maybe one could enlighten me. I see the OP referred to a Hemi base Poly head. I have heard the Polys referred to as Semi Hemis. So Does that mean that the combustion area on the poly heads are spherical? My 392 heads would cradle a soft ball just about perfectly. So, would a Poly head do the same or are these just poly wanna bes?

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57dodge
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Re: Valve cover stud torque
on: Sat 26 of Apr, 2014 [23:07 UTC] score: 0.00
mrgreen> I am changing the valve cover stud on a 1957 Coronet 325. the old one is clogged does anyone know the torque on the nut that holds the rocker assembly, I assume its the same as the the rocker hold down bolts.
> Thanks

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57dodge
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Re: Valve cover stud torque
on: Sat 26 of Apr, 2014 [23:06 UTC] score: 0.00
> I am changing the valve cover stud on a 1957 Coronet 325. the old one is clogged does anyone know the torque on the nut that holds the rocker assembly, I assume its the same as the the rocker hold down bolts.
> Thanks

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hemipwr202
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Re: Valve cover stud torque
on: Thu 24 of Apr, 2014 [21:00 UTC] score: 0.00
> I am changing the valve cover stud on a 1957 Coronet 325. the old one is clogged does anyone know the torque on the nut that holds the rocker assembly, I assume its the same as the the rocker hold down bolts.
> Thanks




My Dodge Hemi with ARP head studs, ARP instructions w/studs says to torque head stud nuts to 110' lbs. These head studs also hold the valve gear girdls/rocker shafts, along with the head to te short block.


I don't know that there is a torque spec. for the valve cover stud nuts or bolts. Just like a typical valve cover not too tight, just squish the gasket a bit. Are you talking about the Rocker Shafts being clogged?


Todd

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George
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Re: Valve cover stud torque
on: Thu 24 of Apr, 2014 [15:20 UTC] score: 0.00
Is it a valve cover stud or does it have studs for the heads? What does "Clogged" mean, or did a so called "smart phone" auto-correct to a different word?

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57dodge
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Re: Re: Valve cover stud torque
on: Sat 26 of Apr, 2014 [23:05 UTC] score: 0.00
> Is it a valve cover stud or does it have studs for the heads? What does "Clogged" mean, or did a so called "smart phone" auto-correct to a different word?
The stud that is the hold down for the Valve cover on my 325 engine actually is screwed into the heads and passes through the rocker assembly so there is a nut there it also comes up through the cover and there is another nut that serves to fasten the cover. The stud also supplies oil to the valve rockers the original stud is clogged and I have another that has been cleaned, want to replace the old one for the cleaned one

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DaveBlakeman
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Re: Valve cover stud torque
on: Thu 24 of Apr, 2014 [14:56 UTC] score: 0.00
You state valve cover stud but then say nut that holds rocker assemlby. On the Chrysler there is no nut it is the head bolt that holds down the rocker assembly which gets torqied to 85 ft/lbs. I am not familar with the Dodge but maybe you have ARP studs? On the Chrysler the ARP stud nuts also get torqued to 85 ft/lbs. This info may not be helpful at all in your case. Not sure what you are dealing with.

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57dodge
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Re: Re: Valve cover stud torque
on: Sat 26 of Apr, 2014 [23:09 UTC] score: 0.00
> You state valve cover stud but then say nut that holds rocker assemlby. On the Chrysler there is no nut it is the head bolt that holds down the rocker assembly which gets torqied to 85 ft/lbs. I am not familar with the Dodge but maybe you have ARP studs? On the Chrysler the ARP stud nuts also get torqued to 85 ft/lbs. This info may not be helpful at all in your case. Not sure what you are dealing with.
The stud that is the hold down for the Valve cover on my 325 engine actually is screwed into the heads and passes through the rocker assembly so there is a nut there it also comes up through the cover and there is another nut that serves to fasten the cover. The stud also supplies oil to the valve rockers the original stud is clogged and I have another that has been cleaned, want to replace the old one for the cleaned one

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George
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Re: Re: Re: Valve cover stud torque
on: Sun 27 of Apr, 2014 [02:25 UTC] score: 0.00
> The stud that is the hold down for the Valve cover on my 325 engine actually is screwed into the heads and passes through the rocker assembly so there is a nut there it also comes up through the cover and there is another nut that serves to fasten the cover. The stud also supplies oil to the valve rockers the original stud is clogged and I have another that has been cleaned, want to replace the old one for the cleaned one

I believe you don't have the 325 hemi or poly, sounds like an "A" Poly to me. Quality Engineered Components has/had some of those hollow studs, check with Gary there.

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George
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Re: Re: Re: Re: Valve cover stud torque
on: Sun 27 of Apr, 2014 [02:50 UTC] score: 0.00
> > The stud that is the hold down for the Valve cover on my 325 engine actually is screwed into the heads and passes through the rocker assembly so there is a nut there it also comes up through the cover and there is another nut that serves to fasten the cover. The stud also supplies oil to the valve rockers the original stud is clogged and I have another that has been cleaned, want to replace the old one for the cleaned one
>
> I believe you don't have the 325 hemi or poly, sounds like an "A" Poly to me. Quality Engineered Components has/had some of those hollow studs, check with Gary there.

The 318 "A" Poly family has the system your talking about, came in various sizes including the '59 Dodge one year only 326, where it's being called a 325 it may be the 326, that someone drpped in @ some point.

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57dodge
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Re: Re: Re: Re: Re: Valve cover stud torque
on: Mon 28 of Apr, 2014 [01:29 UTC] score: 0.00
> > > The stud that is the hold down for the Valve cover on my 325 engine actually is screwed into the heads and passes through the rocker assembly so there is a nut there it also comes up through the cover and there is another nut that serves to fasten the cover. The stud also supplies oil to the valve rockers the original stud is clogged and I have another that has been cleaned, want to replace the old one for the cleaned one
> >
> > I believe you don't have the 325 hemi or poly, sounds like an "A" Poly to me. Quality Engineered Components has/had some of those hollow studs, check with Gary there.
>
> The 318 "A" Poly family has the system your talking about, came in various sizes including the '59 Dodge one year only 326, where it's being called a 325 it may be the 326, that someone dropped in @ some point. I have had the car since new and the engine is original I'm told by all that it is the 325 5.3L engine I have the basic model I do have the mechanics manual but can't find any reference to torque for the valve cover, I have to read again but its about 800 pages. Thanks for the info though

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George
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Re: Re: Re: Re: Re: Re: Valve cover stud torque
on: Mon 28 of Apr, 2014 [01:42 UTC] score: 0.00
> > > > The stud that is the hold down for the Valve cover on my 325 engine actually is screwed into the heads and passes through the rocker assembly so there is a nut there it also comes up through the cover and there is another nut that serves to fasten the cover. The stud also supplies oil to the valve rockers the original stud is clogged and I have another that has been cleaned, want to replace the old one for the cleaned one
> > >
> > > I believe you don't have the 325 hemi or poly, sounds like an "A" Poly to me. Quality Engineered Components has/had some of those hollow studs, check with Gary there.
> >
> > The 318 "A" Poly family has the system your talking about, came in various sizes including the '59 Dodge one year only 326, where it's being called a 325 it may be the 326, that someone dropped in @ some point. I have had the car since new and the engine is original I'm told by all that it is the 325 5.3L engine I have the basic model I do have the mechanics manual but can't find any reference to torque for the valve cover, I have to read again but its about 800 pages. Thanks for the info though

You may be right, been too long since I've looked @ my Hemi based Poly heads, they seem to bolt on that way too. .

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57dodge
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Re: Re: Re: Re: Re: Re: Re: Valve cover stud torque
on: Sat 03 of May, 2014 [02:46 UTC] score: 0.00
> > > > > The stud that is the hold down for the Valve cover on my 325 engine actually is screwed into the heads and passes through the rocker assembly so there is a nut there it also comes up through the cover and there is another nut that serves to fasten the cover. The stud also supplies oil to the valve rockers the original stud is clogged and I have another that has been cleaned, want to replace the old one for the cleaned one
> > > >
> > > > I believe you don't have the 325 hemi or poly, sounds like an "A" Poly to me. Quality Engineered Components has/had some of those hollow studs, check with Gary there.
> > >
> > > The 318 "A" Poly family has the system your talking about, came in various sizes including the '59 Dodge one year only 326, where it's being called a 325 it may be the 326, that someone dropped in @ some point. I have had the car since new and the engine is original I'm told by all that it is the 325 5.3L engine I have the basic model I do have the mechanics manual but can't find any reference to torque for the valve cover, I have to read again but its about 800 pages. Thanks for the info though
>
> You may be right, been too long since I've looked @ my Hemi based Poly heads, they seem to bolt on that way too. .



The nut i am most concerned about is the intermediary nut that actually hold down the rocker but I will put my torque wrench on the others and try to gauge what they are and just torque the new at the same ft/lb thank you guys for the help and words of advice I appreciate it.biggrin


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