Too much tranny fluid?leak out of back of tail housing?
#683894
04/29/10 09:02 PM
04/29/10 09:02 PM
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Joined: Jul 2005
Posts: 1,301
Penna
70satelliteguy
OP
pro stock
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OP
pro stock
Joined: Jul 2005
Posts: 1,301
Penna
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I have one of the Aluminum Moroso Deep transmission pans and when I filled the trans this winter I added till I got to the correct markings on my stock dipstick with the transmission in neutral and warmed up to temp. I now have a leak out of the back of the housing right where the driveshaft enters. It slings some fluid on the floorpan and drips a little after every pass. I have also noticed some on the floor of the trailer and at home in the garage. After I clean it up it does not drip again till I run it. The tranns gaskets were all replaced on the rebuild over the winter. If I am say 1 quart over fill will this cause it to leak like this or should I just pull the drive shaft and replace the gasket again? Thanks Mike 
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Re: Too much tranny fluid?leak out of back of tail housing?
[Re: 70satelliteguy]
#683897
04/29/10 09:22 PM
04/29/10 09:22 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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If you put the level to the dip stick again... its at the correct level(deep pans hold more but thats below the full line on the stick so you still fill to the full line).... change the seal on the tail shaft 
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Re: Too much tranny fluid?leak out of back of tail housing?
[Re: 70satelliteguy]
#683899
04/29/10 09:45 PM
04/29/10 09:45 PM
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Joined: Aug 2003
Posts: 43,228
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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I run my trannys with deep pans intentionally low, (so when I hit it at the track it doesn,t flood the tailshaft housing and the rear seal.  I run mine from just on the bottom of the dip stick to right at the add one pint mark when warmed up, no troubles in over thirty years of doing that  BTW, I have one all out state of tha art(at one time  )race trans that has a B&M aluminum deep pan that has a slosh baffle welded into the rear of the pan to prevent flooding the tailshaft housing under acceleration
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Too much tranny fluid?leak out of back of tail housing?
[Re: 70satelliteguy]
#683901
04/30/10 07:16 AM
04/30/10 07:16 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I run the stamped steel deep pan on mine(no baffle) and I launch fairly decent off the trans brake and its never leaked(anywhere)
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Re: Too much tranny fluid?leak out of back of tail housing?
[Re: dOoC]
#683902
04/30/10 07:21 AM
04/30/10 07:21 AM
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Joined: Jul 2005
Posts: 1,301
Penna
70satelliteguy
OP
pro stock
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OP
pro stock
Joined: Jul 2005
Posts: 1,301
Penna
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"How is the baffling in that pan ? .. " Doc it does have some baffeling in the pan but they are not very deep. So if I do have have a hard launching car it could flood the tailshaft???  Thanks Mike
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Re: Too much tranny fluid?leak out of back of tail hous
[Re: atoetly]
#683905
04/30/10 09:34 AM
04/30/10 09:34 AM
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Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4
master
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master
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
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The last 2 post is what I would look at, bushing, seal and end of the yoke, most people don't know that there's a plug that some times leak by the joint. Also when you have it apart inspect the yoke for damage caused by the seal.  
it's ok to butt heads, just don't do it with a butthead
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Re: Too much tranny fluid?leak out of back of tail housing?
[Re: 70satelliteguy]
#683907
04/30/10 01:43 PM
04/30/10 01:43 PM
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Joined: Jul 2008
Posts: 30,451
Florida STAYcation
dOoC
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,451
Florida STAYcation
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Quote:
"How is the baffling in that pan ? .. "
Doc it does have some baffeling in the pan but they are not very deep.
So if I do have have a hard launching car it could flood the tailshaft???
Thanks Mike
Mike .... SOME of the baffling I have seen in the pans are very sloppy. You have to seal it well to the sides of the pan AND extend it out to the filter extension AND beyond.
About a year ago ....I saw a listing on eBay for a B&M(IIRC) cast alum pan A N D a WINDAGE TRAY ... that only allowed drain-back and slosh possible from the FRONT of the sump.
A good bushing(EZ to check) and seal are important ... but FLOODING the bushing and seal can be an issue tooooo.
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Re: Too much tranny fluid?leak out of back of tail housing?
[Re: Cab_Burge]
#683908
05/04/10 06:29 AM
05/04/10 06:29 AM
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Joined: Sep 2003
Posts: 19,480
north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,480
north of coder
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Quote:
I don't have a picture of it, it is on the trans and I don't want to remove for a picture. It is a piece of aluminum (probally 1/8 or so thick) formed to fit the back side(rear) of the pan all the way around and it is two to three inches wide from front to back. It is weleded to the top edge of the pan, not on the top rail or flange , just below the rail
thanks cab. that was what i was thinking it might be. your explaination needs no pic. docfiberglass, i never seen[or really heard of] a baffeled trans pan before. kinda makes sense it could help keep the tailshaft sloshing in check. was the egag pans of any quality to speak of ?
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Re: Too much tranny fluid?leak out of back of tail housing?
[Re: Dodgem]
#683909
05/04/10 08:49 AM
05/04/10 08:49 AM
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Joined: Feb 2006
Posts: 1,064
Tennessee
727builder
super stock
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super stock
Joined: Feb 2006
Posts: 1,064
Tennessee
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Quote:
A good tail shaft bushing and seal are the key.
 What he said! Replace the tail housing bushing and seal. Also check the plug in the back of the slip yoke. Might be leaking there.
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