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How to Seal Oil Pan From Leaking FOREVER??
#1586336
03/01/14 04:06 PM
03/01/14 04:06 PM
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Joined: Jul 2007
Posts: 1,526
North Carolina
cjskotni
OP
pro stock
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OP
pro stock
Joined: Jul 2007
Posts: 1,526
North Carolina
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Or as close to as possible... I have a nice weekend here and I wanted to see what you guys recommend I do to seal my oil pan up for good. I had paid a mechanic to replace my old oil pan as I could never quite get it to seal...always seemed to weep. Of course my body guy wasn't careful and dented the crap out of my oil pan on a lift....so anyways need to replace AGAIN. I have the new pan and two of the Milodan 'crushproof' pan gaskets. I really don't want to pay the mechanic another chunk of $$$ and I have the steering linkage torn down now as I am replacing the gear so figured I'd try it again. This is a BB car with the "windage tray sandwhich" so a real PITA to do.... What do I need to do to get this to not leak?? I have the Moroso 7" pan and the nice gaskets. What do I need to use?? RTV?? What color?? How much or none at all?? Both or one side of the gasket? This is a real pain and something I want to do ONCE. Please advise me on how to get this to seal up good.  Thanks!! 
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: JohnRR]
#1586339
03/01/14 04:46 PM
03/01/14 04:46 PM
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Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard
master
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master
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
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Quote:
weld it to the block ??? 
You stole my thunder 
Start by getting rid of the so called "Crush Proof" gaskets.
It appears to me they are using an RN-8011 material which is fine for sealing irregular surfaces. However, it will tend to wick oil (weep) and not maintain bolt torque (weep some more).
If you want the straight shot on the best way to install the Milodon gasket I suggest you contact the manufacturer for their recommendations.
And as far as I know the jury is still out on just how well that Jeg's tray seals on certain oil pans.
If you want a real quality gasket click the link in my signature and browse the catalog.
Some recent thoughts on our gaskets
https://board.moparts.org/ubbthreads/show...e=0#Post8055421
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: cjskotni]
#1586340
03/01/14 05:59 PM
03/01/14 05:59 PM
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Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Quote:
Or as close to as possible...
I have a nice weekend here and I wanted to see what you guys recommend I do to seal my oil pan up for good. I had paid a mechanic to replace my old oil pan as I could never quite get it to seal...always seemed to weep.
Of course my body guy wasn't careful and dented the crap out of my oil pan on a lift...
Over last summers many changes, I replaced the oil pan in my car with anew 6 qt Milodon street Hemi pan. I had the Jegs molded composite windage tray ready to go in when I found that they sent me one for a stock stroke. I needed a 4.15 stroke version. It looks to be a winner though. It has soft rubber ribs on each side of the gasket surface and installs in one shot. The old style Block-gasket-steel tray-gasket-oil pan looks totally crude by comparison. I was in a hurry to get the car back together so I sent the Jegs one back and went with the gasket sandwich style. Yeah, it weeps a bit of oil but oddly, the leak isn't at the rear main area. I get it near the timing cover/oil pan connection. What is strange is that this has happened before even with a different oil pan and timing cover.
I've tried looser bolt torque, more bolt torque, smearing RTV on clean surfaces...I see many guys running oil free engines and also wonder what I've done wrong.
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: Kern Dog]
#1586341
03/01/14 06:07 PM
03/01/14 06:07 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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"the right stuff" but it's the cats' ass to get back off. Have/can you pinpoint the exact spot in the front timing cover/pan interface where it's leaking? To see if something is dented/too much gap/poor fit/not squeaky clean (which RTV requires as you know) etc. sumpin ain't right.
live every 24 hour block of time like it's your last day on earth
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: cjskotni]
#1586344
03/01/14 06:31 PM
03/01/14 06:31 PM
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Joined: Aug 2003
Posts: 43,913
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,913
Bend,OR USA
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Quote:
I bought some Permatex High Tack adhesive. I am hoping this with some lock-tight on the pan bolts threads will work. I am hoping this will help me stick the gaskets together and keep them weep free. Part of the problem is with the time it takes to get the tray and pan together, most sealants are already partially set.
Read my post on what was suggested, that has and does, flat work on a lot of motors(150+), gasket adhesives are intended to attach gaskets to parts, not make them oil weep free 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: cjskotni]
#1586346
03/01/14 06:44 PM
03/01/14 06:44 PM
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Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard
master
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master
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
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Quote:
I bought some Permatex High Tack adhesive. I am hoping this with some lock-tight on the pan bolts threads will work. I am hoping this will help me stick the gaskets together and keep them weep free. Part of the problem is with the time it takes to get the tray and pan together, most sealants are already partially set.
The only thing Lock Tite is going to do for you is make it harder to re-torque the oil pan bolts.
The pan gasket you are looking at using will relax under torque requiring you to tighten them more. The more you tighten them the more the oil pan flange distorts..... it's a vicious cycle.
As far as using adhesive silicone on all sides of the gasket........ why bother with a gasket at all, just put it together with silicone
Good luck
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: cjskotni]
#1586348
03/01/14 09:22 PM
03/01/14 09:22 PM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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I just use the stock paper gaskets, one on each side of the windage tray. Not problems getting it to seal.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: Supercuda]
#1586349
03/01/14 09:26 PM
03/01/14 09:26 PM
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Joined: Jul 2007
Posts: 1,526
North Carolina
cjskotni
OP
pro stock
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OP
pro stock
Joined: Jul 2007
Posts: 1,526
North Carolina
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Quote:
I just use the stock paper gaskets, one on each side of the windage tray. Not problems getting it to seal.
With or without sealant? What type?
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: cjskotni]
#1586350
03/01/14 09:34 PM
03/01/14 09:34 PM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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I hate RTV with a passion, so I almost never use it.
I might put a dab where the rear seal retainer and block mate. If it's a pain to line up gasket I will use copper gasket spray to glue it in place, but it's not there to seal it.
Other than that, nothing.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: ScottSmith_Harms]
#1586352
03/01/14 10:04 PM
03/01/14 10:04 PM
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Joined: Jul 2007
Posts: 1,526
North Carolina
cjskotni
OP
pro stock
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OP
pro stock
Joined: Jul 2007
Posts: 1,526
North Carolina
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Oil pan is brand new so should be flat. My windage tray is a bit banged up but I straightened it a bit with a ball peen hammer and a 2x4. Has nobody here used the Permatex High Tack Sealant? They mentioned it by name in the Haynes Manual I have. That and just a dab of RTV in the four corners where the rear seal retainer and timing chain cover meet up with the block. Why I am shying away from the RTV is the fact that I lathered both gaskets (cork) when I did this before and it leaked like crazy. Apparently I did something wrong or RTV just isn't what I should be using. Thanks for all the advice so far! I have the oil pan off and will try to button it up tomorrow! P.S. I do love the Jegs idea but I saw some bad press about the quality and fitment here a year or so ago when those came out. That is a fabulous idea they have if they can pull it off. I want to make sure they get the bugs out and get the fitment right before I sink $85 for the stroker version and the time to drop all this steering again.
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: cjskotni]
#1586354
03/01/14 10:31 PM
03/01/14 10:31 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Permatex "high tack" the red stuff in the spray can #99MA? That is good stuff for holding gaskets in place & works good with cork & is a spray adhesive & does seal very well but it is very thin & not made for gaps like RTV is & not saying I am a fan of RTV cuz I ain't. I wouldn't want to use RTV on cork (not a dealbreaker just a preference). "the right stuff" goes on like RTV but is far different & dries rock solid, just me I would not refer to it as RTV to avoid confusion as it is far better. I still think you have an excessive gap or poor fitment (including the cork gasket) somewhere. Good luck as leaks are just a pain to deal with as you know. Do check the "new" pan rails for flatness
live every 24 hour block of time like it's your last day on earth
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Re: How to Seal Oil Pan From Leaking FOREVER??
[Re: Cab_Burge]
#1586355
03/01/14 11:34 PM
03/01/14 11:34 PM
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Joined: Jul 2005
Posts: 1,954
Blairsden, CA
Triggerfish
top fuel
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top fuel
Joined: Jul 2005
Posts: 1,954
Blairsden, CA
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Quote:
Go buy two small tubes or one large tube of Silicone marked as "adhesive sealant," not the other gasket maker kind  Use it sparingly, not a bunch, between the block and the first gasket after you use it to seal the two oil pan gaskest onto the windage tray first and then between the bottom gasket and the oil pan at the same time as you put it on the block  Follow the directions on the tube to the letter, it will insure a weep free seal IHTHs
Yes... After 6...that's SIX pan gasket changes, I've had to learn the
hard way. Turns out the root cause was my pvc was plugged into the front of the Eddy afb instead of the rear vacuum port & was causing too much crankcase pressure & blowing the pan gasket seal. SO, after TWO Jeg's composite windage tray/gaskets, one installed with Right Stuff (NEVER again...took 4 solid hours to remove it), and the Moroso
crush proof (EXPENSIVE) gaskets w/ the factory tray, I called Permatex & he reiterated what Cab says. Use a sealant on rubber gaskets & not
RTV. I did use RTV on the edges of the front timing cover junction & where the rear main seal holder meets the block. Anyway, the gist of my long winded post is, use sealant with the Moroso gaskets & DON"T overtighten. My pan rail was gouged due when removing The "Right"Stuff
so I don't think you'll have an issue with just a very thin coat of sealant. Best of luck & hope it goes well.
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