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Re: 440 rear main seal woes brand new seal leaks!
[Re: coronet1966d]
#637498
03/12/10 01:36 PM
03/12/10 01:36 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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If the side seals are your suspected leak then they were installed improperly. They should be flush with the pan rail surface when fully seated. The Orange Silicone side seals will seal effectively. If you had issues with installing 2 side seals then you can double your chances with installing 4 and still have less surface area contacting the block and retainer. The 440 source rear seal retainer has been releived on the oil side (side toward the inside of the motor) to allow excessive oil to escape and not flood the rear main seal. http://www.440source.com/rearsealcaps.htm
Last edited by roadhazard; 03/12/10 01:38 PM.
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Re: 440 rear main seal woes brand new seal leaks!
[Re: coronet1966d]
#637499
03/12/10 01:42 PM
03/12/10 01:42 PM
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Joined: Apr 2009
Posts: 183
Canada
Mofopar
member
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member
Joined: Apr 2009
Posts: 183
Canada
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Quote:
i just installed my rebuilt 440 and the rear main is leaking. i used a standard retainer with the rubber rear main and the orange sides. i RTV'ed the bottoms of the retainer and it still leaks
what should i do?
what did i do wrong?
are those billet retainers any better?
can i R&R a rear main without pulling the trans?
i can pull the pan while its in the truck
I honestly can't see keeping the area oil free (where you need it to be) while in the truck. My motor's been on the stand for weeks and it still drips oil in this area.
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Re: 440 rear main seal woes brand new seal leaks!
[Re: Mofopar]
#637500
03/12/10 01:58 PM
03/12/10 01:58 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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Hylomar on the retainer to block mating surface will work instead of silicone  Remember you don't have to goop it up to seal better. Less always the way to go with sealers.
Last edited by roadhazard; 03/12/10 02:00 PM.
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Re: 440 rear main seal woes brand new seal leaks!
[Re: coronet1966d]
#637501
03/12/10 05:51 PM
03/12/10 05:51 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Quote:
ok that all looks good but is there any benifit to the billet retainers sold by mancinis or mopar? they have the double o ring style seals on the sides and im guessing thats where mines leaking
That's how i fixed my leak last year many old seal retainers are warped.
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Re: 440 rear main seal woes brand new seal leaks!
[Re: Dodgem]
#637502
03/12/10 06:30 PM
03/12/10 06:30 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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The newest Fel Pro seal is NOT like the old ones If the seal does not stick out from the seal retainer it will leak---cut 005-010 off of the aluminum seal holder( in rod cap cutter at machine shop ) and it will stop 90% of leaks--when doing a new build you can put the seal in and line it up--then scribe the seal retainer to the block--having it lined up is the easy way to go to save a headache--can't do it in the vehicle but... If you are under the car taking a 40 weight shampoo the best attack is to cut the retainer---the orange rubbers might seal but getting them in is another thing--I have been making side seals like the old kind out of photo mat board--I swear I think that was what the old ones were--they help center the retainer and thus aid seal line up--I have never seen the use of sealers cause harm--I use RTV with no ill effects Good luck I know it can be a real PIA--check crank seal area for nicks--that CAN be done in the car-- 
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Re: 440 rear main seal woes brand new seal leaks!
[Re: coronet1966d]
#637503
03/12/10 11:38 PM
03/12/10 11:38 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
i just installed my rebuilt 440 and the rear main is leaking. i used a standard retainer with the rubber rear main and the orange sides. i RTV'ed the bottoms of the retainer and it still leaks
what should i do?
what did i do wrong?
are those billet retainers any better?
can i R&R a rear main without pulling the trans?
i can pull the pan while its in the truck
I was told by the dealer that the Mopar billet seals are unobtanium as in Disco'd. I have the Mancini one. It worked fine the couple times I use it. This third time was turning into a nightmare. I asked where to get the o ring seals and they said to cut up a 1/8" o ring. Everytime I tried to put it in, the side seals would pull out. I gave up and filled the grooves with the Right Stuff and a dab on the mating surface.
Sometimes the retainers bottom out before the seal contact the crank and you have to take a little material off the bottom. You can tell that if the seal retainer sits up a bit off the pan rails with no seal installed.
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Re: 440 rear main seal woes brand new seal leaks!
[Re: coronet1966d]
#637504
03/13/10 10:40 AM
03/13/10 10:40 AM
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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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Silly question, but you did install the seal the correct direction? The lip is angled abd you want the lip to be forced into teh crank with internal pressure, if that makes sense
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: 440 rear main seal woes brand new seal leaks!
[Re: Supercuda]
#637505
03/13/10 03:09 PM
03/13/10 03:09 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
Silly question, but you did install the seal the correct direction? The lip is angled abd you want the lip to be forced into teh crank with internal pressure, if that makes sense
Yup. leading edge of seal points forwards.
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