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Has anybody added a drain bung to a Torqueflite oil pan?
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56D500boy
Posted 2019-03-23 1:47 AM (#579742)
Subject: Has anybody added a drain bung to a Torqueflite oil pan?



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Seems like it would be a good idea. The filler tube hole sits about 1/2" above the bottom of the pan. Looks to me like it would be possible to add a drain bung to the front (deep end of the pool) of the pan, i.e. a big flat nut and a nice hole in the pan sealed with an oil pan drain bolt or the like.

As shown below:





(PotentialLocationOfATorqueFliteDrainBung.jpg)



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Attachments PotentialLocationOfATorqueFliteDrainBung.jpg (232KB - 212 downloads)
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wizard
Posted 2019-03-23 5:54 AM (#579746 - in reply to #579742)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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Yes, it would be a good position, BUT - When the transmission fluid is to be changed, I always recommend to pull the pan and clean the pan from eventual clutch and band residue - there will always be something in the pan.

Just draining the fluid would mean that you pour in fresh fluid that might agitate the residue and conterminate the fresh fluid.


So, the proper service would be to pull the pan, clean it out - check the shift cable adjustment - mount the pan with a new gasket - drain the torque converter - fill up with Dexron III fluid according to the proceedure in the fsm.


Adjust the bands and the throttle valve linkage after the specs in the fsm.




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mikes2nd
Posted 2019-03-23 9:46 AM (#579751 - in reply to #579742)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?


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yeah who is changing their trans oil that often?
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56D500boy
Posted 2019-03-23 12:33 PM (#579758 - in reply to #579751)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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Thanks Sven and Mike. I will leave the pan alone and service it properly (but messily) in the future.



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Phil_the_frenchie
Posted 2019-03-23 3:20 PM (#579762 - in reply to #579742)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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I've one since restoration of car. The only benefit is to drain the oil pan before removing it so you have less oil on you when you remove the last bolt ...
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57chizler
Posted 2019-03-23 4:02 PM (#579764 - in reply to #579742)
Subject: RE: Has anybody added a drain bung to a Torqueflite oil pan?



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On the iron TF I have always used the fill tube to drain the pan, gets enough out so that it doesn't slosh over when removing the pan.
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56D500boy
Posted 2019-03-23 4:48 PM (#579769 - in reply to #579762)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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Phil_the_frenchie - 2019-03-23 12:20 PM

I've (had?) one since restoration of car. The only benefit is to drain the oil pan before removing it so you have less oil on you when you remove the last bolt ...


I think that is what I was thinking. Drain the oil first, then remove the pan.
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56D500boy
Posted 2019-03-23 6:49 PM (#579775 - in reply to #579769)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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Just bought a very dirty (on the outside) cast-iron TF pan that has fewer dints (two small one) for US$25 that is going to cleaned up, de-dinted and a new drain bung, just for fun.

This:



(eBayTransPan_1_small.jpg)



(eBayTransPan_2_small.jpg)



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Attachments eBayTransPan_1_small.jpg (142KB - 184 downloads)
Attachments eBayTransPan_2_small.jpg (144KB - 183 downloads)
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jboymechanic
Posted 2019-03-23 10:10 PM (#579797 - in reply to #579742)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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The first TF trans had a separate drain plug from the factory, like on my late production 1956 Imperial.
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56D500boy
Posted 2019-03-23 10:15 PM (#579798 - in reply to #579797)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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jboymechanic - 2019-03-23 7:10 PM

The first TF trans had a separate drain plug from the factory, like on my late production 1956 Imperial.


Any photos that you can share?

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jboymechanic
Posted 2019-03-25 5:19 PM (#579903 - in reply to #579742)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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I'll see if I can find one for you. If not, I'll have to crawl under the care and take one.
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local2Ed
Posted 2019-03-28 8:43 AM (#580024 - in reply to #579742)
Subject: RE: Has anybody added a drain bung to a Torqueflite oil pan?


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If the fill hole sits only 1/2 inch off the bottom, I don't think there is much to gain from installing a drain plug on the side of the pan.

Just leave the drivers side pan bolts loose and let the passenger side hang down as low as possible to drain as much fluid out.

Edited by local2Ed 2019-03-28 8:45 AM
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57chizler
Posted 2019-03-28 12:35 PM (#580028 - in reply to #580024)
Subject: RE: Has anybody added a drain bung to a Torqueflite oil pan?



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Or just unscrew the fill tube nut and let it drain from there.
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56D500boy
Posted 2019-03-28 3:09 PM (#580034 - in reply to #580028)
Subject: RE: Has anybody added a drain bung to a Torqueflite oil pan?



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57chizler - 2019-03-28 9:35 AM

Or just unscrew the fill tube nut and let it drain from there.


Sure but that still leaves about 1/2" of oil in the bottom of the pan.

The tilting of the pan off the driver's side bolts and using the fill tube hole to get the final drain before removing the pan seems to be the answer.

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57chizler
Posted 2019-03-29 11:27 AM (#580062 - in reply to #580034)
Subject: RE: Has anybody added a drain bung to a Torqueflite oil pan?



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When you take into consideration the radius at the floor/side intersection, a drain plug added on the side like shown in your pic won't completely drain the pan either. A 1/2" left on the bottom will make less of a mess than trying to remove a full pan.
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jboymechanic
Posted 2019-04-02 10:30 PM (#580312 - in reply to #580062)
Subject: RE: Has anybody added a drain bung to a Torqueflite oil pan?



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Here is the factory drain plug location, on my 1956 Imperial with factory original TF. On the driver side of the pan, more toward the rear of the pan.



(IMG_3535.jpg)



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Attachments IMG_3535.jpg (143KB - 217 downloads)
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wizard
Posted 2019-04-03 1:37 AM (#580325 - in reply to #579742)
Subject: Re: Has anybody added a drain bung to a Torqueflite oil pan?



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This would leave approximately the same amount of fluid as is the filler tube is removed. The advantage is that it's more easy to drain off a certain volume for to change the neutral starter switch or the shift cable.


The filler tube is very often subject for small leakages.




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