Can I reseal Valley cover with Indy heads on engine?
#1470688
07/19/13 10:54 PM
07/19/13 10:54 PM
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Joined: Jun 2009
Posts: 233
vashon island washington
hunterstroble
OP
enthusiast
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OP
enthusiast
Joined: Jun 2009
Posts: 233
vashon island washington
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Hi all, I have a 440, with Indy EZ heads and their solid valley cover with inspection plate. The valley cover is leaking in the front where the silicone is. Do I have to pull a head to reseal this or is their a way to reseal it with the heads on the engine. I searched but did not find any defenate answers. What silicone do you reccomend? I was going to use the Mopar ATF silicone unless there was a more suitible kind. Thanks.
1969 Dodge dart 500 stroker
1973 Dodge Challenger 440
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Re: Can I reseal Valley cover with Indy heads on engine?
[Re: hunterstroble]
#1470690
07/20/13 12:05 AM
07/20/13 12:05 AM
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Joined: Dec 2006
Posts: 4,647
aotearoa
rebel
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master
Joined: Dec 2006
Posts: 4,647
aotearoa
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no problem. clean up the area where it's leaking real good. spray some carb cleaner or other suitable de-greaser around the area to be sealed. lay out some masking tape on the perimeter edges where you want the sealer to stop & rtv away. lick your finger so the rtv dont stick & make it look tidy. peal off the tape & you wouldn't know you'd repaired it. i do this to seal my heads, i'm sure you can do similar to repair your leak.
Last edited by rebel; 07/20/13 12:07 AM.
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Re: Can I reseal Valley cover with Indy heads on engine?
[Re: hunterstroble]
#1470692
07/20/13 04:07 AM
07/20/13 04:07 AM
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Joined: Jan 2003
Posts: 9,997
Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Frostbitefalls MN (Rocky&Bullw...
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Some of the Mega blocks (like the one I own!) need to have a hump near the distributor ground off if you have to slide the valley plate out. I should buy a plate with the access built in!
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Can I reseal Valley cover with Indy heads on engine?
[Re: hunterstroble]
#1470695
07/20/13 03:28 PM
07/20/13 03:28 PM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
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On my old 500" low deck I had a local machine shop put a slanted cut down the center of my Indy plate so it could easily be installed or removed with the 440-1 heads installed. Worked great!
I'm also doing a pump gas 500" low deck for the new Duster with max wedge port Eddy heads so I don't know what I'm gonna use for a valley cover??
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Can I reseal Valley cover with Indy heads on engine?
[Re: ProSport]
#1470697
07/21/13 01:58 PM
07/21/13 01:58 PM
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Joined: Aug 2008
Posts: 4,070
Mo.
racerx
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master
Joined: Aug 2008
Posts: 4,070
Mo.
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Quote:
On my old 500" low deck I had a local machine shop put a slanted cut down the center of my Indy plate so it could easily be installed or removed with the 440-1 heads installed. Worked great!
I'm also doing a pump gas 500" low deck for the new Duster with max wedge port Eddy heads so I don't know what I'm gonna use for a valley cover??
So what seals the machine surface cut rtv.  ?
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Re: Can I reseal Valley cover with Indy heads on engine?
[Re: ProSport]
#1470698
07/21/13 03:54 PM
07/21/13 03:54 PM
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Joined: Jan 2003
Posts: 3,575
The Netherlands
BigBlockMopar
master
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master
Joined: Jan 2003
Posts: 3,575
The Netherlands
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Quote:
On my old 500" low deck I had a local machine shop put a slanted cut down the center of my Indy plate so it could easily be installed or removed with the 440-1 heads installed. Worked great!
I'm also doing a pump gas 500" low deck for the new Duster with max wedge port Eddy heads so I don't know what I'm gonna use for a valley cover??
I'm dealing with the same thing on my 500" blower motor. But since the heads are spaced up about .010" with Cometic gaskets, I've been thinking of doing a straight cut on the coverplate, and fill the gap with some aluminium edging in the form of a T-strip or something.
Andy's plate looks like a very nice piece but I can't see myself spending $250 on it at Mancini's.
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Re: Can I reseal Valley cover with Indy heads on engine?
[Re: BigBlockMopar]
#1470699
07/21/13 04:42 PM
07/21/13 04:42 PM
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Joined: Jan 2003
Posts: 31,030
Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,030
Oregon
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The clear valley has been useful during dyno testing. We tracked down a couple of small oiling issues by watching thru the plate.
Last edited by AndyF; 07/21/13 04:43 PM.
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Re: Can I reseal Valley cover with Indy heads on engine?
[Re: AndyF]
#1470702
07/21/13 10:36 PM
07/21/13 10:36 PM
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Joined: Mar 2006
Posts: 9,835
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,835
MI, usa
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Quote:
Re-sealing the valley plate without pulling the heads seems like a high risk deal. Guess it all depends on what you're trying to accomplish. If you have a vacuum pump it might work since you can put a bead on the outside and the vacuum will pull it in. If you have positive crankcase pressure then my guess is that you'll have a leaker until you pull the heads and do it right.
I don't agree. I've pulled the valley plate off 2 different Indy engines withe the heads on. Remove the intake, remove the 6 tray bolts, cut the RTV with a knife, slide the plate back and drop it into the valley. Then twist lift, remove, clean, and reinstall. Whats the big deal? I also thread the center 2 holes 3/8x24. Then screw a bolt into the plate to help split the China wall seal. Only a turn or so against the block does the job.
Doug
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.But now i have one with the removable center section so if i need to check the lifters i can remove the center plate.Hope this helps 
