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Cork or Rubber? Tranny pan gasket... #733623
06/25/10 10:20 PM
06/25/10 10:20 PM
Joined: Apr 2004
Posts: 589
Waynesboro, PA
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cuda_tim Offline OP
mopar
cuda_tim  Offline OP
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Joined: Apr 2004
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Waynesboro, PA
Ok, I need to change the gasket on my 727 transmission pan. I used cork before, with some sort of blue RTV.

I'm not sure that it ever stopped leaking! A dribble here & a dribble there.

What do you suggest?

I have a rubber gasket.

But I'm used to cork.

If I use the rubber gasket, what RTV should I use?

I'm temped to use cork again, but with Permatex 2. Putting the gasket on the pan & letting it dry overnight. Then applying the same sealant with a dab on each screw...

Any help would be greatly appreciated.

Thanks!

Tim...


"Robots building robots.... now that's just stupid!" - Will Smith in the movie "I, Robot".

'71 Demon (340/727)/'69 Charger (383/727)/'65 Barracuda (273-2V/904)/'66 Coronet (340/727)/'86 Dodge Aries (2.5L)/'78 Dodge Aspen (318-2V/904)
Re: Cork or Rubber? Tranny pan gasket... [Re: cuda_tim] #733624
06/25/10 10:36 PM
06/25/10 10:36 PM
Joined: Jan 2003
Posts: 20,348
Eagle, Idaho
Neil Offline
The Doctor is in.
Neil  Offline
The Doctor is in.

Joined: Jan 2003
Posts: 20,348
Eagle, Idaho
I used a soft rubber gasket and clear GE Silicone I door and window sealant on my pickup transmission and it worked nicely. The GE silicone is available at home depot and lowes and it works better than any parts store rtv I have ever tried. It's super sticky and sets up pretty fast so have all your parts cleaned and ready to roll once you start applying it.

As with any sealant you need to make sure the surfaces are super clean. I went over the trans case surface with paper towels and carb cleaner several times in order to get it as clean and oil free as possible.

Re: Cork or Rubber? Tranny pan gasket... [Re: cuda_tim] #733625
06/25/10 10:39 PM
06/25/10 10:39 PM
Joined: Mar 2007
Posts: 550
ne
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broncobra Offline
mopar
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ne
Don't use rtv. Use Indian shellac or some thing else, or get one of those rubber/steel insert gaskets. RTV can get small blobs gunked up into everything, use a painted on type sealer.

Re: Cork or Rubber? Tranny pan gasket... [Re: broncobra] #733626
06/25/10 11:07 PM
06/25/10 11:07 PM
Joined: Jan 2003
Posts: 2,111
Bowie, MD
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Reggie Offline
top fuel
Reggie  Offline
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Bowie, MD
Go to a Dodge/Chrysler dealer and get the newer style reuseable pan gasket. The number for the 727 (or A-518/46RH/46RE) is: 2464324AC. It is hard nylon over steel with molded in double sealing beads. Be careful not to overtorque it, or you can strip the case threads because it doesn't compress the same as a cork or rubber gasket.

Re: Cork or Rubber? Tranny pan gasket... [Re: Reggie] #733627
06/25/10 11:58 PM
06/25/10 11:58 PM
Joined: Jan 2003
Posts: 752
AZ - The "dry heat" state
71autoxr Offline
super stock
71autoxr  Offline
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Posts: 752
AZ - The "dry heat" state
Quote:

Go to a Dodge/Chrysler dealer and get the newer style reuseable pan gasket. The number for the 727 (or A-518/46RH/46RE) is: 2464324AC. It is hard nylon over steel with molded in double sealing beads. Be careful not to overtorque it, or you can strip the case threads because it doesn't compress the same as a cork or rubber gasket.




I agree. It will be the last pan gasket you ever buy. Well worth the money.


68 AMX mopars red headed stepchild
69 Dart GT Convertible 340 4 speed
71 Challenger - looks like the avatar!
Re: Cork or Rubber? Tranny pan gasket... [Re: 71autoxr] #733628
06/26/10 12:24 AM
06/26/10 12:24 AM
Joined: Jul 2008
Posts: 30,247
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,247
Florida STAYcation
As long as the pan-rail is straight and flat ...and you do NOT over-torque the bolts ....

......ANY gaskets will work.

I have a cork one on my 62 since the late-70's ... on and off maybe 8 or so times .....NO problem.

And NOTE ... if you are chancing STRIPPING the threads in the case by OVERtightening ... you are using about FIVE TIMES ++ ... tooooo much torque on these bolts.

Re: Cork or Rubber? Tranny pan gasket... [Re: Reggie] #733629
06/26/10 12:38 AM
06/26/10 12:38 AM
Joined: Sep 2004
Posts: 1,226
Cookeville
Chilort Offline
Will Work For Mopars
Chilort  Offline
Will Work For Mopars

Joined: Sep 2004
Posts: 1,226
Cookeville
Quote:

Go to a Dodge/Chrysler dealer and get the newer style reuseable pan gasket. The number for the 727 (or A-518/46RH/46RE) is: 2464324AC. It is hard nylon over steel with molded in double sealing beads. Be careful not to overtorque it, or you can strip the case threads because it doesn't compress the same as a cork or rubber gasket.




One of the best things I ever did. I love mine. It is a slightly different shape than a 727 pan from Mopar (old, or even their deep pan -- P3690730AB) but it seals and seals well. I agree with the torque issue too. I think the book calls for something like 150inlbs which is too much for cork too. I went to around 1/2 that.

Re: Cork or Rubber? Tranny pan gasket... [Re: dIc dOc Deity !] #733630
06/26/10 01:59 AM
06/26/10 01:59 AM
Joined: Aug 2008
Posts: 1,568
Omaha, Nebraska
Scott Carl Offline
pro stock
Scott Carl  Offline
pro stock

Joined: Aug 2008
Posts: 1,568
Omaha, Nebraska
Quote:

As long as the pan-rail is straight and flat ...and you do NOT over-torque the bolts ....

......ANY gaskets will work.

I have a cork one on my 62 since the late-70's ... on and off maybe 8 or so times .....NO problem.

And NOTE ... if you are chancing STRIPPING the threads in the case by OVERtightening ... you are using about FIVE TIMES ++ ... tooooo much torque on these bolts.



I just rebuilt a GM (yeah I know ) but I re-used a rubber one that we had put on several weeks earlier when we thought it might just need a fluid and filter change. I got a new on in the kit but it was cork and as simply a personal choice, I'm not fond of cork. Anyway, point is, I just used a little film of white grease but no sealer. I go just snug on all bolts and another wrist twist (1/4 to 1/3 turn?) Been two weeks now and no leaks. If you can see the gasket compress and squish out any, you've over tightened.

Re: Cork or Rubber? Tranny pan gasket... [Re: Scott Carl] #733631
06/26/10 08:14 AM
06/26/10 08:14 AM
Joined: May 2003
Posts: 15,487
Florida
S
scratchnfotraction Offline
I Live Here
scratchnfotraction  Offline
I Live Here
S

Joined: May 2003
Posts: 15,487
Florida
x2..x3...x4 on the newer pan gasket from the dealer

well worth the $

just dont over torque the pan bolts,the gasket does not crush and you can strip the threds very ez

if you do pull some threds out..you can usally get by with a longer bolt as the newer gasket is thicker

had mine 5 yrs now and on/off about 8x so far and still no leak at the pan rail

now the shift selector seal is another thing though


Re: Cork or Rubber? Tranny pan gasket... [Re: broncobra] #733632
06/27/10 12:19 PM
06/27/10 12:19 PM
Joined: Jul 2003
Posts: 1,107
Spring Valley ,Ca.
moparsquid Offline
super stock
moparsquid  Offline
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Joined: Jul 2003
Posts: 1,107
Spring Valley ,Ca.
Quote:

Don't use rtv. Use Indian shellac or some thing else, or get one of those rubber/steel insert gaskets. RTV can get small blobs gunked up into everything, use a painted on type sealer.


I agee i just did my pan and used Indian head and a rubber gasket fixed the prblem.

Re: Cork or Rubber? Tranny pan gasket... [Re: moparsquid] #733633
06/27/10 12:26 PM
06/27/10 12:26 PM
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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MoparforLife Offline
Too Many Posts
MoparforLife  Offline
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
Quote:

Quote:

Don't use rtv. Use Indian shellac or some thing else, or get one of those rubber/steel insert gaskets. RTV can get small blobs gunked up into everything, use a painted on type sealer.


I agee i just did my pan and used Indian head and a rubber gasket fixed the prblem.


Great stuff till you want to take it apart for a trans service. Have fun.
The new ribbed gaskets seal with no added sealer and are reusable.

Re: Cork or Rubber? Tranny pan gasket... [Re: MoparforLife] #733634
06/27/10 12:29 PM
06/27/10 12:29 PM

A
Anonymous
Unregistered
Anonymous
Unregistered
A



I've always 3m adhesive a cork gasket [after it relaxes] to the tranny pan and then bolt it up, no sealer in the trans side.

the 3m works great.

mainly you need a pan that has not been torq'd to death in the past.


Re: Cork or Rubber? Tranny pan gasket... #733635
06/27/10 12:50 PM
06/27/10 12:50 PM
Joined: May 2003
Posts: 15,487
Florida
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scratchnfotraction Offline
I Live Here
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Joined: May 2003
Posts: 15,487
Florida
x2

wait till you remove the indian gasket sealer for the next service

dont get me wrong..I use it and it is good stuff

i am just picky were I use it and it wont be coming off any time soon

that dealer gasket is the way to go..even on an over torqued warped pan..like mine

Re: Cork or Rubber? Tranny pan gasket... [Re: cuda_tim] #733636
06/27/10 02:24 PM
06/27/10 02:24 PM
Joined: Sep 2003
Posts: 1,168
Vancouver, WA
MoparMarq Offline
super stock
MoparMarq  Offline
super stock

Joined: Sep 2003
Posts: 1,168
Vancouver, WA
One more vote for the later model 46RE nylon gasket.
Reused mine after a nice trans fluid shower; no leaks, no problems.

Re: Cork or Rubber? Tranny pan gasket... [Re: MoparMarq] #733637
06/27/10 02:33 PM
06/27/10 02:33 PM
Joined: May 2005
Posts: 4,679
Florida
BDW Offline
master
BDW  Offline
master

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Florida
Either will work.

I'd take a good look at the entire area, I replaced my pan gasket 3 times. Finally found out there were 3 other leaks making it look like the pan gasket was the problem.

Re: Cork or Rubber? Tranny pan gasket... [Re: cuda_tim] #733638
06/27/10 03:59 PM
06/27/10 03:59 PM
Joined: Apr 2010
Posts: 1,216
Under My Car
Mopar_Country Offline
pro stock
Mopar_Country  Offline
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Joined: Apr 2010
Posts: 1,216
Under My Car
Make sure your pan is flat on the mating area. A lot of the time you will see that in the bolt hole area that they are bowl shaped, this is from over tightening. Check with a straight edge on the surface that mates to the housing and see if everything is flush. If not you can work the bolt holes in the opposite direction to get a good seal on install.


___________________________________________
2003 Dodge Ram 4x4 Hemi
2002 Dodge Ram Van
1995 Dodge Ram 4x4 V-10
1976 Jeep Cherokee
1974 Dart Sport
Re: Cork or Rubber? Tranny pan gasket... [Re: Mopar_Country] #733639
06/27/10 04:28 PM
06/27/10 04:28 PM
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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dusturbd340W5 Offline
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Kissimmee Fl.
1st get the reusable gasket best gasket you will ever buy 2nd if installed correctly no gasket needs any sealer at all we use the fiber gaskets at work I use no sealer and have no problems.


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: Cork or Rubber? Tranny pan gasket.. STILL LEAKS [Re: dusturbd340W5] #733640
09/04/10 12:52 PM
09/04/10 12:52 PM
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Posts: 589
Waynesboro, PA
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cuda_tim Offline OP
mopar
cuda_tim  Offline OP
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Waynesboro, PA
Ok, since I posted last, I've had several gaskets on the tranny pan and it is still leaking...

I even got the one from the Chrysler dealer, and that one leaked also.

I also checked the flatness of the pan, it is fine. It is a deep pan.

The good thing is that I'm getting pretty good at dropping it. Luckily, it has a plug for drainage.

Ok, I'm beginning to think that perhaps it is leaking at the filler tube. I'm going to check that today.

But here is my question...

It only appears to leak when it is sitting (I know, otherwise I wouldn't notice it...duh!).

But I'm wondering if perhaps I'm overfilling it. The filler tube is NOT original. Does the fluid sitting in the pan normally lie ABOVE the seal between the pan and tranny? That is, perhaps when the car is sitting the fluid is supposed to be below the pan lip.

Anyone??


"Robots building robots.... now that's just stupid!" - Will Smith in the movie "I, Robot".

'71 Demon (340/727)/'69 Charger (383/727)/'65 Barracuda (273-2V/904)/'66 Coronet (340/727)/'86 Dodge Aries (2.5L)/'78 Dodge Aspen (318-2V/904)
Re: Cork or Rubber? Tranny pan gasket.. STILL LEAKS [Re: cuda_tim] #733641
09/04/10 01:11 PM
09/04/10 01:11 PM
Joined: Jan 2003
Posts: 32,882
Grand Prairie,Texas
stumpy Offline
I Win
stumpy  Offline
I Win

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Posts: 32,882
Grand Prairie,Texas
fluid level is above the pan and you get converter drainback raising the fluid level as it sits.

Re: Cork or Rubber? Tranny pan gasket.. STILL LEAKS [Re: stumpy] #733642
09/04/10 01:29 PM
09/04/10 01:29 PM
Joined: Nov 2007
Posts: 21,808
Kirkland, Washington
Pacnorthcuda Offline
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Kirkland, Washington
Many a pan gasket has been blamed for leaks that actually come from:
The selector shaft seal
The Fill-tube/O-ring
The reverse-shaft at the rear of the pan area, just above the pan rail

Re: Cork or Rubber? Tranny pan gasket.. STILL LEAKS [Re: Pacnorthcuda] #733643
09/04/10 01:31 PM
09/04/10 01:31 PM
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT Offline
Management Trainee
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Today? Who Knows?
Quote:

Many a pan gasket has been blamed for leaks that actually come from:
The selector shaft seal
The Fill-tube/O-ring
The reverse-shaft at the rear of the pan area, just above the pan rail




Exactly.

Re: Cork or Rubber? Tranny pan gasket.. STILL LEAKS [Re: 1_WILD_RT] #733644
09/04/10 02:30 PM
09/04/10 02:30 PM
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Posts: 13,544
md
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mopars4ever Offline
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md
I always have a tendency to over tighten so cork is always out for me. On my daughters neon I used "the right stuff" and no gasket but usually I just use a rubber gasket. Her neon leaked no matter what I tried so I used the sealer only. As far as the filler tube leaking, reach up around the base of the tube and see if it is wet. The fluid isn`t going to drip uphill.

Re: Cork or Rubber? Tranny pan gasket.. STILL LEAKS [Re: 1_WILD_RT] #733645
09/04/10 04:33 PM
09/04/10 04:33 PM
Joined: May 2005
Posts: 4,679
Florida
BDW Offline
master
BDW  Offline
master

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Florida
Quote:

Quote:

Many a pan gasket has been blamed for leaks that actually come from:
The selector shaft seal
The Fill-tube/O-ring
The reverse-shaft at the rear of the pan area, just above the pan rail




Exactly.




Good advice, as I said, replaced my pan/gasket 3 times. Look elsewhere.

https://board.moparts.org/ubbthreads/show...&PHPSESSID=

Re: Cork or Rubber? Tranny pan gasket... [Re: cuda_tim] #733646
09/04/10 05:35 PM
09/04/10 05:35 PM
Joined: Feb 2007
Posts: 612
Nampa, ID
None2Slow Offline
mopar
None2Slow  Offline
mopar

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Posts: 612
Nampa, ID
I had a turbo350 in my 69 Camaro that we couldn't get to stop leaking. No matter what gasket we used. Checked the pan and it was a little bent around the bolt holes so we fixed it. Still leaked. Bought a new deep pan and it still leaked. Finally put a straight edge on the trans itself and found that it wasn't flat. After asking around, I was told that if somebody had taken a metal scrapper, lik a putty knife, to clean the rail, it's easy to cause this type of problem. We took a long file and carefully worked the area around the low spot and finally got it to even out a bit. Put it back together and no more leak. May be worth checking into.

Re: Cork or Rubber? Tranny pan gasket... [Re: None2Slow] #733647
09/23/10 12:12 AM
09/23/10 12:12 AM
Joined: Apr 2004
Posts: 589
Waynesboro, PA
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cuda_tim Offline OP
mopar
cuda_tim  Offline OP
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Waynesboro, PA
Ok, I took my deep pan off again. And I thought that I found the problem. I was so excited!

When I laid a straight edge across the front of the pan rail (the rail that meets the front of the tranny), there appeared to be a little bend... exactly where it leaks (on the passenger side front corner). That was the only place that it didn't appear to be straight.

So rather then try to straighten it (and perhaps make it worse), I bought a new pan.

But this one appears to be bent in the same area.

So I'm ready to sell the car. Any takers? (just kidding!)

Now I'm thinking that I have a couple of options. 1) try and straighten the old one or 2) try the new one as is.

It came with a new rubber gasket that is less than 1/8" thick.

Does anyone know, am I supposed to use any sealant?

Thanks!

Tim...


"Robots building robots.... now that's just stupid!" - Will Smith in the movie "I, Robot".

'71 Demon (340/727)/'69 Charger (383/727)/'65 Barracuda (273-2V/904)/'66 Coronet (340/727)/'86 Dodge Aries (2.5L)/'78 Dodge Aspen (318-2V/904)
Re: Cork or Rubber? Tranny pan gasket... [Re: Reggie] #733648
09/30/10 01:14 PM
09/30/10 01:14 PM
Joined: Jan 2003
Posts: 3,719
Space Station #5
471Magnum Offline
master
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Space Station #5
Quote:

Go to a Dodge/Chrysler dealer and get the newer style reuseable pan gasket. The number for the 727 (or A-518/46RH/46RE) is: 2464324AC.




My local Dodge dealer indicates this is no longer a valid number.

Anybody got the current part number for the reusable 727 gasket?


-Jim

I can fix it... my old man is a television repairman.
He's got the ultimate set of tools... I can fix it.

Currently Mopar-less
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