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Oil Pan Fitting Installation #2672220
07/01/19 05:37 AM
07/01/19 05:37 AM
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MASSACHUSETTS
Chip Offline OP
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Chip  Offline OP
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MASSACHUSETTS
I bored 2 holes in my oil pan for the Milodon swivel pickup installation. The Milodon kit comes with 2 washers and 2 rubber o-rings to seal the pickup to pan on the inside.

How tight should the -12 AN fitting backing nut be tightened to squish the rubber o-ring?

Do I need additional sealant or does the o-ring do the job?

Thanks, Chip

Re: Oil Pan Fitting Installation [Re: Chip] #2672232
07/01/19 06:47 AM
07/01/19 06:47 AM
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Posts: 4,243
Charlotte, North Carolina
sgcuda Offline
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I found that a thin smear of silicone goes a long way to seal those. You don't need to crank down on the nuts with a 3ft. breaker bar, but the o rings should compress enough to seal properly, and without the nuts vibrating loose. A short open end wrench pulled snug by hand, and a small extra bump for good measure, is what I usually do.

Last edited by sgcuda; 07/01/19 06:48 AM.
Re: Oil Pan Fitting Installation [Re: sgcuda] #2672267
07/01/19 08:17 AM
07/01/19 08:17 AM
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Posts: 17,801
S.E. Michigan
ZIPPY Offline
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S.E. Michigan
Thanks for this post. I will doing my first external pickup
Pretty soon and any little tips are helpful.


Rich H.

Esse Quam Videri




Re: Oil Pan Fitting Installation [Re: ZIPPY] #2672395
07/01/19 10:05 AM
07/01/19 10:05 AM
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Posts: 13,319
Marion, South Carolina [><]
an8sec70cuda Offline
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Marion, South Carolina [><]
Like sgcuda said, silicone is your friend! No need to tighten the snout out of them, just snug them up and take some time to seal every gap w/ a thin bead of silicone or it will leak. Even the Doty (DMI) sealing rings leak, for me anyway, but they are better then the Milodon washers.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Oil Pan Fitting Installation [Re: Chip] #2672415
07/01/19 10:31 AM
07/01/19 10:31 AM
Joined: May 2004
Posts: 12,379
Taxes & Virus's R-US, NY
Dragula Offline
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Taxes & Virus's R-US, NY
Well that's a loaded question......

Snug as it will go without distortion...Thinner the pan, the lighter you have to go....And yes, rtv,,,I used to have blue aluminum washers that captured the o-rings so they didn't squeeze out. Problem was most fittings weren't long enough to use them most of the time.. Went to the copper washer captured style 0-rings....and lots of rtv before a drop of oil goes in...

My new setup by Billet Fab uses a static pickup and AN16 welded fitting....no leaky washers...

hemi102 (1).JPGDSC00020.JPGKIMG0687.JPG
Last edited by Dragula; 07/01/19 10:43 AM.

'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Oil Pan Fitting Installation [Re: Dragula] #2672457
07/01/19 11:13 AM
07/01/19 11:13 AM
Joined: Jan 2012
Posts: 2,603
Stuttgart, Arkansas
rickseeman Offline
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Use sealant called The Right Stuff. Follow the instructions.


2011 Drag Pak Challenger
Re: Oil Pan Fitting Installation [Re: sgcuda] #2672472
07/01/19 11:29 AM
07/01/19 11:29 AM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
R
RapidRobert Offline
Circle Track
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Lincoln Nebraska
Quote
I found that a thin smear of silicone goes a long way to seal those.
silicone adhesive or silicone gasket cement?


live every 24 hour block of time like it's your last day on earth
Re: Oil Pan Fitting Installation [Re: RapidRobert] #2672482
07/01/19 11:44 AM
07/01/19 11:44 AM
Joined: Aug 2003
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Bend,OR USA
C
Cab_Burge Offline
I Win
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Posts: 43,007
Bend,OR USA
Silicone adhesive twocents


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Oil Pan Fitting Installation [Re: Cab_Burge] #2672492
07/01/19 12:02 PM
07/01/19 12:02 PM
Joined: Dec 2005
Posts: 11,408
Fulton County, PA
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CMcAllister Offline
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Fulton County, PA
The Ultra Gray Ford spec stuff is very substantial. Or the real silicone black 16B.


If the results don't match the theory, change the theory.
Re: Oil Pan Fitting Installation [Re: Cab_Burge] #2672498
07/01/19 12:09 PM
07/01/19 12:09 PM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Offline
"Butt Crack Bob"
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north of coder
Originally Posted by Cab_Burge
Silicone adhesive twocents


iagree just don't use a TON. a light smear is enough.
beer

Re: Oil Pan Fitting Installation [Re: moparx] #2672516
07/01/19 12:33 PM
07/01/19 12:33 PM
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In The Hills
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jughed Offline
pro stock
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In The Hills
I always run a bead of silicone under the washers, and around the holes on the pickup. And i use the larger Indy swinging pickup. A Milodon pickup is on the left.

51208 001.jpg


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Re: Oil Pan Fitting Installation [Re: jughed] #2672568
07/01/19 02:07 PM
07/01/19 02:07 PM
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Warren, MI
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Jerry Offline
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Jerry  Offline
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Warren, MI
we make the bulk head sealing washers with dual orings so you don't have to use silicone.

washers.jpg

Superior Design Concepts
2574 Elliott Dr
Troy MI 48083
jerry@sdconcepts.com
www.sdconcepts.com
Facebook page: Superior Design Concepts
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Re: Oil Pan Fitting Installation [Re: Jerry] #2672618
07/01/19 04:46 PM
07/01/19 04:46 PM
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Ontario, Canada
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Stanton Online content
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Stanton  Online Content
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You guys scare me with your unbridled use of rtv !!! Personally I wound NEVER in a million years use that crap anywhere near a fuel or oil fitting. You are just begging for trouble if the fitting ever needs to come apart. You will have bits of that crap everywhere you don't want it.

I this particular case, pipe sealant is the only type of sealant that should be used. It will stay soft and if the part ever needs to come apart the sealant can be wiped off. There is no hardened sealant bits to get anywhere it doesn't belong.

As far as how tight to do those washers ... tight enough that they won't come loose !! There is a groove cut on the back of the pickup fitting to contain the o-rings. Tighten the nuts till the pickup is tight against the pan - the o-rings aren't going anywhere !!

Re: Oil Pan Fitting Installation [Re: Stanton] #2672712
07/01/19 07:56 PM
07/01/19 07:56 PM
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Warren, MI
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Jerry Offline
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if you over tighten the nut the oring will crush and squeeze out. the fitting isn't design to have a pocket for the o ring. that's why we make the bulkhead washers. this washer, has a taper to seat the oring on the fitting and another o ring on the reverse side that seals flat against the pan. the washer has the appropriate pockets to use O-rings, then you can torque the nuts to the proper value depending on size of nut.


Superior Design Concepts
2574 Elliott Dr
Troy MI 48083
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www.sdconcepts.com
Facebook page: Superior Design Concepts
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Re: Oil Pan Fitting Installation [Re: Stanton] #2672856
07/02/19 06:30 AM
07/02/19 06:30 AM
Joined: Dec 2018
Posts: 76
MASSACHUSETTS
Chip Offline OP
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Chip  Offline OP
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MASSACHUSETTS
Originally Posted by Stanton
You guys scare me with your unbridled use of rtv !!! Personally I wound NEVER in a million years use that crap anywhere near a fuel or oil fitting. You are just begging for trouble if the fitting ever needs to come apart. You will have bits of that crap everywhere you don't want it.

I this particular case, pipe sealant is the only type of sealant that should be used. It will stay soft and if the part ever needs to come apart the sealant can be wiped off. There is no hardened sealant bits to get anywhere it doesn't belong.

As far as how tight to do those washers ... tight enough that they won't come loose !! There is a groove cut on the back of the pickup fitting to contain the o-rings. Tighten the nuts till the pickup is tight against the pan - the o-rings aren't going anywhere !!



I'll use the pipe sealant. The rubber O-rings that come with the Milodon 21464 washer/o-ring kit are .20 (1/8 in) thick. Instruction is to put this o-ring on the inside (washer outside) and they definitely do not crush down so the the pickup seats against the pan.

I will tighten the backing washer until the rubber o-rings are .10 (1/16 in) squished. I will also use pipe sealant on the outside lock-nut threads so hopefully they won't loosen up from vibration.

Then I will fill the pan with oil to bench test for leaks...

Re: Oil Pan Fitting Installation [Re: Chip] #2672876
07/02/19 08:09 AM
07/02/19 08:09 AM
Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
an8sec70cuda Offline
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I Live Here

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Posts: 13,319
Marion, South Carolina [><]
Use something thinner for your bench test. Cold oil won't leak like hot oil will.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Oil Pan Fitting Installation [Re: Stanton] #2672904
07/02/19 09:19 AM
07/02/19 09:19 AM
Joined: Nov 2015
Posts: 870
Missouri
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jwb123 Offline
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Posts: 870
Missouri
Originally Posted by Stanton
You guys scare me with your unbridled use of rtv !!! Personally I wound NEVER in a million years use that crap anywhere near a fuel or oil fitting. You are just begging for trouble if the fitting ever needs to come apart. You will have bits of that crap everywhere you don't want it.

I this particular case, pipe sealant is the only type of sealant that should be used. It will stay soft and if the part ever needs to come apart the sealant can be wiped off. There is no hardened sealant bits to get anywhere it doesn't belong.

As far as how tight to do those washers ... tight enough that they won't come loose !! There is a groove cut on the back of the pickup fitting to contain the o-rings. Tighten the nuts till the pickup is tight against the pan - the o-rings aren't going anywhere !!


I have a system one filter, so its easy to check when I change oil. I install my oil pickup just like most who replied, with silicon, I like the gray. And I seldom get metal in my filter, but every oil change I get pieces of RTV. So far no problems, but you may have something about using to much RTV.

Re: Oil Pan Fitting Installation [Re: jwb123] #2672911
07/02/19 09:35 AM
07/02/19 09:35 AM
Joined: Oct 2005
Posts: 8,828
Ontario, Canada
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Stanton Online content
Don't question me!
Stanton  Online Content
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S

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Ontario, Canada
Quote
I will also use pipe sealant on the outside lock-nut threads so hopefully they won't loosen up from vibration.


Pipe sealant has teflon in it. If anything it will help those nuts to loosen. I'd suggest a couple drops of blue loctite instead.

Re: Oil Pan Fitting Installation [Re: Stanton] #2672969
07/02/19 11:12 AM
07/02/19 11:12 AM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Offline
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moparx  Offline
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Joined: Sep 2003
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north of coder
the "secret" is to not use a TON of sealant, be it silicone or pipe dope.
like the old brylcream add said : "just a little dab'll do ya !"
beer







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