valley pan installation
#2902127
03/23/21 05:17 PM
03/23/21 05:17 PM
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Joined: Apr 2012
Posts: 80 taunton, mass. 02780
moparthunder70
OP
member
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OP
member
Joined: Apr 2012
Posts: 80
taunton, mass. 02780
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Okay, I was getting ready to put my valley pan on my block and then do the intake install.. (383) Today I was talking to a mechanic friend of mine who said I need intake manifold gaskets put on the block first, then the valley pan...I was under the impression the valley pan took the place of intake gaskets and all that was required was to install the pan and then put the two hold down pcs. on the front and back. Also what kind of gasket sealer would be the best to use on the pan, and would you apply the sealer on the block as well as the top of the pan for the intake ? I've never heard of using both intake gaskets and the pan as well ? need some advice...thanks..
Last edited by moparthunder70; 03/23/21 05:19 PM.
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Re: valley pan installation
[Re: moparthunder70]
#2902139
03/23/21 05:42 PM
03/23/21 05:42 PM
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Joined: Jan 2003
Posts: 1,022 Andrews,In. U.S.of A.
67_Satellite
super stock
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super stock
Joined: Jan 2003
Posts: 1,022
Andrews,In. U.S.of A.
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Thin layer of silicone on the end rails with an extra dab where the head and end rails meet. On the other surfaces between manifold & head, use "Indian Head" or Permatex brush on sealer on both sides. I wouldn't bother with the paper gaskets unless you "need" them to compensate for some sort of milling that has been done.
Last edited by 67_Satellite; 03/23/21 05:44 PM.
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Re: valley pan installation
[Re: moparthunder70]
#2902218
03/23/21 10:58 PM
03/23/21 10:58 PM
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Joined: Aug 2003
Posts: 43,251 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,251
Bend,OR USA
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Mopar never used any intakes gaskets on BB motors that had the stock valley pan The stamp steel valley pan is embossed to serve as the only sealing surfaces needed As already mentioned if the heads and block have been milled very much you may need the thin fiber intake gaskets between the valley pan and the intake side of the heads and the pan to help seal it up so it doesn't suck oil up into the intake manifold
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: valley pan installation
[Re: moparthunder70]
#2902263
03/24/21 06:29 AM
03/24/21 06:29 AM
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Joined: Jan 2003
Posts: 5,138 East Aurora (Buffalo) NY
RoadRunner
master
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master
Joined: Jan 2003
Posts: 5,138
East Aurora (Buffalo) NY
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I never have used paper gaskets either. I do use a thin coat of Hylomar Blue sealant around the ports on both sides of the valley pan. The Hylomar stays sort of soft and isn't affected by fuel.
68 Road Runner (383/4speed, post car w/decor pkg) - Major Project 69 Road Runner w/472 Hemi & 4 speed. 70 Challenger R/T SE EF8 w/ V9J, U - A32 - Major Project 2023 Ford Mach 1
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Re: valley pan installation
[Re: moparthunder70]
#2902331
03/24/21 11:57 AM
03/24/21 11:57 AM
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Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
pro stock
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pro stock
Joined: Jan 2010
Posts: 1,442
NW Chicago suburban area
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The valley pan is a combined valley splash shield and outer perimeter gasket design -- a common design for large wide-spread engines, such as the BB Mopars.
The fiber side rail gaskets were originally installed by Chrysler only on the rare 1969 aluminum six-pack manifolds.... due to slight out-of-flatness in the assembly. Realistically, the installation of the side fiber gaskets (2 bottom, 2 top) helps to seal the entire assembly regardless of the manifold (and head) material -- cast iron or aluminum. Best to always install them, but your mileage may vary.
I'm a former gasket engineer from a major company. I know the history behind the designs.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
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Re: valley pan installation
[Re: RP's R/T's]
#2902842
03/25/21 11:23 PM
03/25/21 11:23 PM
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Joined: Mar 2011
Posts: 3,089 Michigan
A727Tflite
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Michigan
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It would seem that 2 gaskets, one above and one below the valley pan, would potentially raise the manifold enough for alignment issues with the intake bolts. I have had some issues in the past where the misalignment allowed valley oil to get pulled into the combustion chambers through a gap between the intake and head. In that case, with the addition of gaskets, the valley pan ribs couldn’t crush, as was intended for sealing. Regarding the service action for poor manifold machining, those gaskets were much thinner than the gaskets normally made available today.
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Re: valley pan installation
[Re: A727Tflite]
#2903025
03/26/21 02:11 PM
03/26/21 02:11 PM
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Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
pro stock
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pro stock
Joined: Jan 2010
Posts: 1,442
NW Chicago suburban area
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"...those gaskets were much thinner than the gaskets normally made available today."
Yes, they are thin and do not affect the bolt hole or port alignment.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
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Re: valley pan installation
[Re: Cab_Burge]
#2903181
03/26/21 09:05 PM
03/26/21 09:05 PM
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Joined: Feb 2003
Posts: 2,810 Sobieski Wi
bee1971
master
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master
Joined: Feb 2003
Posts: 2,810
Sobieski Wi
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Trying these next http://www.hughesengines.com/Index/...EJsb2NrIChMb3cgRGVjayk=&partid=33979Not having much luck on my 383/432 - Edelbrock E Street Heads and Weiand Action Plus Dual Plane Block was resurfaced only , about .003 Tried Fel Pro Gaskets with Tin Pan - Tin Pan only - Gaskets on head side only Gaskets dry on head surface , nothing around the ports No vacuum leaks , Engine idles and runs Awesome Sucking small amounts of oil intake ports
1971 Dodge Charger Superbee 2011 Ram Sport 1500 Quad Cab Deep Water Blue Loaded Siberian Huskies
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Re: valley pan installation
[Re: bee1971]
#2903183
03/26/21 09:08 PM
03/26/21 09:08 PM
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Joined: Feb 2003
Posts: 2,810 Sobieski Wi
bee1971
master
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master
Joined: Feb 2003
Posts: 2,810
Sobieski Wi
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You can see the crush marks from the Tin Pan around the Intake ports
1971 Dodge Charger Superbee 2011 Ram Sport 1500 Quad Cab Deep Water Blue Loaded Siberian Huskies
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Re: valley pan installation
[Re: bee1971]
#2903226
03/26/21 10:58 PM
03/26/21 10:58 PM
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Joined: Mar 2011
Posts: 3,089 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,089
Michigan
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Trying these next http://www.hughesengines.com/Index/...EJsb2NrIChMb3cgRGVjayk=&partid=33979Not having much luck on my 383/432 - Edelbrock E Street Heads and Weiand Action Plus Dual Plane Block was resurfaced only , about .003 Tried Fel Pro Gaskets with Tin Pan - Tin Pan only - Gaskets on head side only Gaskets dry on head surface , nothing around the ports No vacuum leaks , Engine idles and runs Awesome Sucking small amounts of oil intake ports Before installing any intake gasket check the manifold on the engine without gaskets. Standing at one end shine a light from the other end and see if the intake and head are touching equally at top and bottom. You can also use a feeler gauge - checking at top and bottom. Sometimes just sliding the intake back and forth a bit will center it between both heads. One other thing, make sure you have it centered when installing it and BEFORE you start tightening the bolts. Once it’s cocked it’s gonna stay that way. My guess if one bank is wet then it’s cocked to one side.
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Re: valley pan installation
[Re: elmor353]
#2903384
03/27/21 02:26 PM
03/27/21 02:26 PM
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Joined: Feb 2003
Posts: 2,810 Sobieski Wi
bee1971
master
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master
Joined: Feb 2003
Posts: 2,810
Sobieski Wi
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I have set the intake in place dry on the bare heads before
My smallest feeler gauge is .006" brass - Top , bottom , both sides I can’t get it to slide in anywhere
Port alignment on this intake manifold sure isn’t the greatest when setting up the valley tin pan
The port alignment on the E Street Heads with the valley tin pin installed is perfect
1971 Dodge Charger Superbee 2011 Ram Sport 1500 Quad Cab Deep Water Blue Loaded Siberian Huskies
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