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#4564567 - 11/05/17 07:45 AM For Any Welders Out There
Sierra048 Offline


Registered: 02/26/11
Posts: 827
Loc: N. Georgia Mtns
I'm getting my ducks in a row for when I drop the transmission pan on my Sierra to change the filter. My pan doesn't have a drain plug, YET! I found this on line and I'm thinking of adding this to the pan before I re-install it. I like this one because it's relatively flat on the outside with no space taken up inside the pan.



I'll need someone to weld this on since I'm not a welder, hence the reason for my topic. How much do you it would cost for someone to weld this onto my pan? Hole will aready be drilled. Just welding it in place and nothing else. Where I live I'm a little limited in the number of welders around, at least the few who advertise. I'd like to get an idea of what to expect. Thanks.


Edited by Sierra048 (11/05/17 07:46 AM)
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#4564570 - 11/05/17 07:51 AM Re: For Any Welders Out There [Re: Sierra048]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
I paid $30 for someone to tig weld a Dorman plug onto mine.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4564575 - 11/05/17 07:56 AM Re: For Any Welders Out There [Re: Sierra048]
tom slick Offline


Registered: 05/26/03
Posts: 9301
Loc: Central Coast, Calif.
Thatís an NPT bung and plug, NPT isnít usually used on drains (especially automotive) because it tends to wear out after several uses and not seal well.
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You get what you pay for...
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#4564577 - 11/05/17 07:57 AM Re: For Any Welders Out There [Re: Sierra048]
bullwinkle Offline


Registered: 10/09/04
Posts: 7671
Loc: Cincinnati, OH, USA
Guy I use pretty regularly welded a bung onto a rear end cover on my GMC for $10 (factory plug in the case hopelessly rusted & stripped). Look for a little local guy who does stuff for cash.
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#4564580 - 11/05/17 07:57 AM Re: For Any Welders Out There [Re: tom slick]
bullwinkle Offline


Registered: 10/09/04
Posts: 7671
Loc: Cincinnati, OH, USA
Originally Posted By: tom slick
Thatís an NPT bung and plug, NPT isnít usually used on drains (especially automotive) because it tends to wear out after several uses and not seal well.
A little Teflon tape fixes that issue-then the tape wears instead of the fittings.
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#4564581 - 11/05/17 07:58 AM Re: For Any Welders Out There [Re: Sierra048]
spasm3 Offline


Registered: 05/30/10
Posts: 8662
Loc: North Carolina
You can buy a pan with a drain plug cheap enough. I usually don't like a lot of dorman stuff, but i have this pan and its going on when i change the fluid on the avalanche. It feels well made and has a nice drain bolt.

$35 and no welding. A few reviews about incomplete stamping, but mine looks fine and is flat.

https://www.amazon.com/Dorman-265-811-Transmission-Oil-Pan/dp/B002U6ELS4


Edited by spasm3 (11/05/17 08:00 AM)
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#4564582 - 11/05/17 07:58 AM Re: For Any Welders Out There [Re: motor_oil_madman]
Slick17601 Offline


Registered: 12/04/04
Posts: 1515
Loc: Pennsylvania
Originally Posted By: motor_oil_madman
I paid $30 for someone to tig weld a Dorman plug onto mine.


Good advice, you want TIG for this application.

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#4564591 - 11/05/17 08:07 AM Re: For Any Welders Out There [Re: Slick17601]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
Originally Posted By: Slick17601
[quote=motor_oil_madman]I paid $30 for someone to tig weld a Dorman plug onto mine.


Good advice, you want TIG for this application.

It will leak or look like [censored] with any other method due to being so thin.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4564594 - 11/05/17 08:08 AM Re: For Any Welders Out There [Re: Sierra048]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
I don't recommend the Dorman plug unless you're having it welded.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4564603 - 11/05/17 08:17 AM Re: For Any Welders Out There [Re: tom slick]
George7941 Offline


Registered: 05/10/05
Posts: 2158
Loc: Toronto, Canada
Originally Posted By: tom slick
Thatís an NPT bung and plug, NPT isnít usually used on drains (especially automotive) because it tends to wear out after several uses and not seal well.


In this situation, NPT will do just fine. It is not sealing against pressure, so it does not have to be torqued heavily. Tape or joint compound (I prefer the compound) will lubricate the threads and ensure no wear on the threads.

Heavy truck axle drains are 1/2 in NPT. They have FPT on the axle and the MPT plug screws in flush so that it is not sticking down and risking damage if the truck is driven over a rock. If a flanged plug sealed with an o-ring is used, there is the danger of it getting sheared off by a rock and the driver only finds out when the axle loses all its oil and starts making horrible sounds or seizes up. I have drained the oil in many axles with MPT plugs and there has never been an issue with the drain plugs.
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#4564607 - 11/05/17 08:20 AM Re: For Any Welders Out There [Re: Sierra048]
skyactiv Offline


Registered: 03/02/13
Posts: 4402
Loc: The Midwest
You only get about yes, half the fluid out when changing the transmission fluid. B&M is a long standing performance automatic transmission specialist and offers a drain plug kit for cheap. You'll leave a little in the pan how it's designed, but again, you never get all the fluid changed out regardless.

https://www.amazon.com/80250-Automatic-Transmission-Universal-Drain/dp/B00029WR78

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#4564615 - 11/05/17 08:26 AM Re: For Any Welders Out There [Re: spasm3]
Ethan1 Offline


Registered: 12/29/14
Posts: 1632
Loc: 'murica
Originally Posted By: spasm3
You can buy a pan with a drain plug cheap enough. I usually don't like a lot of dorman stuff, but i have this pan and its going on when i change the fluid on the avalanche. It feels well made and has a nice drain bolt.

$35 and no welding. A few reviews about incomplete stamping, but mine looks fine and is flat.

https://www.amazon.com/Dorman-265-811-Transmission-Oil-Pan/dp/B002U6ELS4


^Correct answer. It's one of the only Dorman parts I would recommend.

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#4564629 - 11/05/17 08:41 AM Re: For Any Welders Out There [Re: Sierra048]
MasterSolenoid Offline


Registered: 09/26/17
Posts: 166
Loc: One Step Beyond
Your on the right track.

What I did was,
* Buy a Hex Nut with the same thread as your current Drain Plug.
* Have Hex Nut welded onto (exterior) Pan.
* Drill Hole thru Pan.
* Use the same Drain Plug you were using before.

Once a year I now do a Drain-N-Fill of Trans Fluid.

Cost: My Nephew did the welding (= free).

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#4564640 - 11/05/17 08:48 AM Re: For Any Welders Out There [Re: Sierra048]
tig1 Offline


Registered: 01/03/09
Posts: 13661
Loc: Illinois
I have tig welded drain plugs for myself and others. Cost; Is the pan aluminum or steel?
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2007 Ford Fusion 227,000 miles
M1 0-20 EP
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#4564641 - 11/05/17 08:49 AM Re: For Any Welders Out There [Re: skyactiv]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
Originally Posted By: skyactiv
You only get about yes, half the fluid out when changing the transmission fluid. B&M is a long standing performance automatic transmission specialist and offers a drain plug kit for cheap. You'll leave a little in the pan how it's designed, but again, you never get all the fluid changed out regardless.

https://www.amazon.com/80250-Automatic-Transmission-Universal-Drain/dp/B00029WR78








That's what I had welded on. Lol it's like $7 I didn't have faith in that plastic washer not leaking.


Edited by motor_oil_madman (11/05/17 08:50 AM)
_________________________
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