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#4586947 - 11/27/17 07:30 PM aluminum diff cover
mobilaltima Offline


Registered: 02/03/11
Posts: 1148
Loc: Golden Meadow, LA
I plan on installing one of the factory '08 diff covers on my 99 7.3, straight bolt on any 10.5 Ford rear end. My question is, does anyone know the torque for the bolts? Also should I use the silicone Diesel Manor provides, or should I use a Lube Locker gasket? The cover has a groove for the silicone, but I was leaning towards the gasket. Thanks.

http://www.dieselmanor.com/motorcraft/FD-3Z4033A.htm

https://www.lubelocker.com/inventory/llr-fordsterling-1025105
_________________________
2006 2500 Dodge 5.9 Cummins Mobil Delvac 15W40, Fleetguard Stratapore 90k miles
Early '99 F250 ECLB 7.3 Stroker, 223k miles

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#4586960 - 11/27/17 07:41 PM Re: aluminum diff cover [Re: mobilaltima]
2015_PSD Offline


Registered: 09/26/10
Posts: 7233
Loc: SE Texas
This one from Mag Hytec states 12-16 lb-ft:



I would use silicone in a tube to form a gasket in the groove.
_________________________
2018 MB AMG GLC43 3.0L Coupe - M1 0W-40/OEM
2018 MB C300 2.0L - M1 0W-40/OEM
2015 F-250 6.7L PS Diesel - Delo 5W-40/CQ Blue
2014 Explorer 3.5L Limited - M1 AFE 0W-20/FU

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#4586965 - 11/27/17 07:44 PM Re: aluminum diff cover [Re: mobilaltima]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
I have never torqued bolts for a diff cover. I have always tightened them with a ratchet with minimal light pressure in a cross pattern and then snugged them down 1/2 turn to 1 full turn using a fist on the ratchet handle sort of thing. Never had a leak.

As for the silicone I like Permatex Grey Gasket Maker. I use it on all pans / covers like this. Just make sure the surface is good and clean / oil free and give it some time to set up before you refill. My transmission oil pan is practically vertical so if it's going to leak it would on my Journey and it's dry.



Edited by StevieC (11/27/17 07:47 PM)
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'15 Dodge Journey - 90,000 KM's - SSO 5w20
'06 Hyundai Santa Fe - 535,000km - SSO 0w30 (R.I.P)

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#4586987 - 11/27/17 08:05 PM Re: aluminum diff cover [Re: mobilaltima]
BrocLuno Online   content


Registered: 09/06/15
Posts: 5511
Loc: Kalifornia Kollective
I f you want to use the gasket, I like YamaBond gasket adhesive. Or, Hylomar - either is readily available and both work well smile
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Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4586989 - 11/27/17 08:05 PM Re: aluminum diff cover [Re: mobilaltima]
Chris142 Online   content


Registered: 06/05/03
Posts: 16817
Loc: Deplorable in apple valley, ca
Same as steviec. I have never torqued the bolts on a diff cover. I prefer mega grey sealer myself but any ultra grey or ultra black will be fine.
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#4586998 - 11/27/17 08:12 PM Re: aluminum diff cover [Re: mobilaltima]
4WD Offline


Registered: 09/21/10
Posts: 6363
Loc: Texas
I put the G2 on with my factory gasket but since it is now a stiff and fully machined mating ~ all appropriate silicone works = if you give them time to cure etc

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#4587029 - 11/27/17 08:46 PM Re: aluminum diff cover [Re: mobilaltima]
clinebarger Offline


Registered: 12/19/13
Posts: 1902
Loc: Fort Worth, Texas
I also use Ultra Grey on differential covers. The Lube Locker is a good idea if you have to pull the cover to drain the gear oil....It's the only gasket I've seen work on flat flange Dana covers.
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2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
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#4587061 - 11/27/17 09:30 PM Re: aluminum diff cover [Re: StevieC]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Originally Posted By: StevieC
As for the silicone I like Permatex Grey Gasket Maker.


Do you leave it as a bead, or do you butter it ?

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#4587066 - 11/27/17 09:36 PM Re: aluminum diff cover [Re: mobilaltima]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
I put on a thin bead that I know will flatten into place without leaving heaps of it in whatever I'm sealing. I might work it a little bit around the bolt holes here/there but that's it.
_________________________
'15 Dodge Journey - 90,000 KM's - SSO 5w20
'06 Hyundai Santa Fe - 535,000km - SSO 0w30 (R.I.P)

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#4587078 - 11/27/17 09:57 PM Re: aluminum diff cover [Re: StevieC]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I can never get a uniform bead with a squeeze tube. I have to use a cartridge and a caulking gun if I want a uniform bead. When I'm using a squeeze tube, I end up spreading it like butter.

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#4587091 - 11/27/17 10:12 PM Re: aluminum diff cover [Re: BrocLuno]
Colt45ws Offline


Registered: 08/15/06
Posts: 9637
Loc: Central Washington
Originally Posted By: BrocLuno
I f you want to use the gasket, I like YamaBond gasket adhesive. Or, Hylomar - either is readily available and both work well smile

I really wanna try this Hylomar stuff some day. It just worked out I heard of it right after I bought a caulk gun type tube of grey RTV and so Im still working my way through that.
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-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2

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#4587131 - 11/27/17 11:49 PM Re: aluminum diff cover [Re: Colt45ws]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Originally Posted By: Colt45ws
I really wanna try this Hylomar stuff some day. It just worked out I heard of it right after I bought a caulk gun type tube of grey RTV and so Im still working my way through that.


What I want to try is that Permatex Right Stuff. I know it's an aerosol and it pushes out the sealant, but I'm curious about how fast it comes out and how easy it is to keep a uniform bead width.

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#4587133 - 11/27/17 11:54 PM Re: aluminum diff cover [Re: Merkava_4]
Colt45ws Offline


Registered: 08/15/06
Posts: 9637
Loc: Central Washington
Originally Posted By: Merkava_4
Originally Posted By: Colt45ws
I really wanna try this Hylomar stuff some day. It just worked out I heard of it right after I bought a caulk gun type tube of grey RTV and so Im still working my way through that.


What I want to try is that Permatex Right Stuff. I know it's an aerosol and it pushes out the sealant, but I'm curious about how fast it comes out and how easy it is to keep a uniform bead width.

I have right stuff in the tube.
As far as the aerosol type, those are easy to work with. We have them at work.
_________________________
-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2

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#4587145 - 11/28/17 12:36 AM Re: aluminum diff cover [Re: mobilaltima]
beanoil Online   content


Registered: 10/17/04
Posts: 2951
Loc: Midwest, Illinois
FelPro gasket.
The Ford cover will not come with bolts. The ones from your steelie are too short.
ARP makes some replacements. P/N 612-1250
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beanoil: Tough under heat, real dirty afterwards.

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#4587317 - 11/28/17 08:34 AM Re: aluminum diff cover [Re: mobilaltima]
MasterSolenoid Offline


Registered: 09/26/17
Posts: 161
Loc: One Step Beyond
I've never had the opportunity to use Hylomar, but it has been spoken of highly on this site.
I like using Permatex Ultra Black.
Use any good product and then your concern will be prep work and applying / read the instructions.


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