Re: Questions about installing a valley pan
[Re: 440mopar]
#2642371
04/07/19 05:50 PM
04/07/19 05:50 PM
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Joined: Jan 2003
Posts: 4,273
Morrow, OH
markz528
master
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master
Joined: Jan 2003
Posts: 4,273
Morrow, OH
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I use red spray permatex. rtv just on the ends on the block.
As far as gaskets, normally used when intake is shaved. But best way to know if you need the gaskets is to put the intake on and see how well the ports align. Do it with and without the gaskets.
67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......
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Re: Questions about installing a valley pan
[Re: B1MAXX]
#2643022
04/08/19 10:56 PM
04/08/19 10:56 PM
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Joined: Jun 2006
Posts: 5,163
CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,163
CT
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I don't use any sealer around the ports, just on the ends
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: Questions about installing a valley pan
[Re: GTX MATT]
#2643028
04/08/19 11:18 PM
04/08/19 11:18 PM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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I don't use any sealer around the ports, just on the ends Same here. I trial fit the intake without the valley pan gasket to make sure the manifold to head angles are the same (Check top and bottom of ports with feeler gauge or shim.) with no gasket the intake should sit a bit low with the bolt hole alignment. With the valley tray gasket, uncompressed, the bolt holes should be close to just slightly high. Often if the block or heads have been milled and the intake side of the heads not milled to match, the intake will set too high and may need to be milled to fit correctly.
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Re: Questions about installing a valley pan
[Re: 440mopar]
#2643117
04/09/19 09:01 AM
04/09/19 09:01 AM
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Joined: Jan 2003
Posts: 17,860
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,860
S.E. Michigan
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If I remember correctly the thin paper gaskets that come with fel pro 1214 and 1215 were basically the same as those advised in a very old Chrysler TSB
for 440 6 pack vehicles with aluminum intakes. I believe the reduced torque spec of the aluminum intake caused a leak here
and there which the paper gaskets helped repair.
I like to use all 4 paper gaskets when it doesn't goof up the fit. I Copper coat or High Tack the paper gaskets to the pan.
Any good RTV on the end rails/an extra blob in each corner because they tend to "sweat" out of the corners.
If you're addicted to intake manifold swaps or want to make it a little easier to service, you can apply a light coat of oil or white grease with your finger
to the intake flange, so that it doesn't stick to the gasket. I've done that since the '80s and it has worked well.
If there's no space for the paper gaskets, then I usually just use copper coat on both sides.
Rich H.
Esse Quam Videri
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Re: Questions about installing a valley pan
[Re: ZIPPY]
#2643253
04/09/19 02:07 PM
04/09/19 02:07 PM
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Joined: Aug 2006
Posts: 614
Michigan
Get-X
mopar
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mopar
Joined: Aug 2006
Posts: 614
Michigan
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If I remember correctly the thin paper gaskets that come with fel pro 1214 and 1215 were basically the same as those advised in a very old Chrysler TSB
for 440 6 pack vehicles with aluminum intakes. I believe the reduced torque spec of the aluminum intake caused a leak here
and there which the paper gaskets helped repair.
I like to use all 4 paper gaskets when it doesn't goof up the fit. I Copper coat or High Tack the paper gaskets to the pan.
Any good RTV on the end rails/an extra blob in each corner because they tend to "sweat" out of the corners.
If you're addicted to intake manifold swaps or want to make it a little easier to service, you can apply a light coat of oil or white grease with your finger
to the intake flange, so that it doesn't stick to the gasket. I've done that since the '80s and it has worked well.
If there's no space for the paper gaskets, then I usually just use copper coat on both sides.
Other than greasing up the paper for reuse, I do exactly the same thing. There are times, like when it's an iron head and a iron intake that were uncut, I just glue up the end rails and nothing else with that combo.
'65 Belvedere
'68 GTX
'57 Dodge pickup
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Re: Questions about installing a valley pan
[Re: topside]
#2643262
04/09/19 02:26 PM
04/09/19 02:26 PM
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Joined: Aug 2003
Posts: 43,211
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,211
Bend,OR USA
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Using the thin paper gaskets on the tray is the best way I've found to do it once and never have a sealing or vacuum leak issue.
Usually .015 thick is perfect, glued to the tray.
Any paper gasket gets a thin coat of something that'll release cleanly, like a thin wheel-bearing grease or Pam depending on where it is.
Blob of clear RTV at corners, a smear of non-hardening sealer along the china walls, install, clean excess, paint, done. All good information on all the above posts  I do try to use the paper gaskets on the head side when I can't use both of them so it prevents oil from being sucked up into the ports   I do also use Gasket Cinch to seal the gaskets, especially on the inside of the ports sides 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Questions about installing a valley pan
[Re: Get-X]
#2643582
04/10/19 10:18 AM
04/10/19 10:18 AM
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Joined: Jan 2003
Posts: 21,074
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,074
Niles , Ohio
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Never in 50 years used sealer around ports.Even years ago using used pans never used it.Use some RTV on the ends and thats it.My 440 now aluminm heads and intake been together for 20 years no problems.My son ran the same with iron heads for 15 years.Rocky
Chrysler Firepower
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Re: Questions about installing a valley pan
[Re: therocks]
#2664097
06/09/19 05:20 PM
06/09/19 05:20 PM
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Joined: Jan 2003
Posts: 2,863
middle Tennessee
mopower440
master
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master
Joined: Jan 2003
Posts: 2,863
middle Tennessee
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Never in 50 years used sealer around ports.Even years ago using used pans never used it.Use some RTV on the ends and thats it.My 440 now aluminm heads and intake been together for 20 years no problems.My son ran the same with iron heads for 15 years.Rocky Well, ive never used anything besides the valley pan, Then this weekend i take off the stock iron intake to install my new Holley Street dominator intake and have a vacuum leak from hell on both sides of the intake! I used some good sealant around the ports and a new fel-pro valley pan, but it wont idle because of the vacuum leak..so, not sure what to do now..Ive never had this happen, but this is my first aluminum intake..Before was always the big heavy stock intake..any advice? Heads have never been milled.
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Re: Questions about installing a valley pan
[Re: mopower440]
#2664168
06/09/19 09:19 PM
06/09/19 09:19 PM
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Joined: Mar 2011
Posts: 3,081
Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,081
Michigan
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When installing a manifold for the first time on any engine I always lay the manifold in place and center side to side then use a feeler gauge at the top and bottom of the head flange to see if there’s a gap. I usually find that when things are correct you can’t get a .002” gauge between the manifold and head.
A thin paper gasket on the valley pan should correct minor angle variations.
I do recall hearing of using plastigauge too.
Last edited by Transman; 06/09/19 09:20 PM.
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