08+ factory aluminum diff cover questions. - Ford Powerstroke Diesel Forum

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post #1 of 11 Old 05-31-2011, 06:05 PM Thread Starter
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08+ factory aluminum diff cover questions.

I bought one of these a while back off fleabay for 60 bucks.

Questions,

Are the stock bolts from the tin cover long enough to use?

If not, what bolt size would I need to buy? Metric threads?


Also, I will be replacing a pinion seal at the same time, what size is the pinion nut on the 10.5 sterling axle?

Steve
2006 F350 Lariat, 6.0 PSD CC LB 4X4. 100k miles.
Wix coolant filter, Dynomax Ultraflow exhaust, cat mod, Edge Insight CS/with EGT. Sinister EGR delete, EGR cooler delete, up pipe. Looney Tune via SCT X4. S&B Intake.
Mag-Hytec transmission pan, 08 diff cover.
2" leveling kit. RS9000 Shocks. B&W Turnover Ball/ Companion Hitch. Airlift 5000 airbags.

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post #2 of 11 Old 05-31-2011, 06:47 PM
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stock bolts are not long enough. just take one of the bolts out of the top of the cover(so u can drive and not leak) and take it to the hardware store.

i put one on my 00. and if you figure the new cover is about 3/8 thicker so get a bolt thats about 3/8 longer.

i believe the bolt is 8x1.25x?? i think.

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post #3 of 11 Old 06-01-2011, 02:11 PM Thread Starter
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I haven't verified yet, but through some creative google searching it would appear that the bolt size required for the thicker cover is a 5/16s -18 x 1 1/4" in length.

Hope to get that on next week while I am changing my pinion seal.

Steve
2006 F350 Lariat, 6.0 PSD CC LB 4X4. 100k miles.
Wix coolant filter, Dynomax Ultraflow exhaust, cat mod, Edge Insight CS/with EGT. Sinister EGR delete, EGR cooler delete, up pipe. Looney Tune via SCT X4. S&B Intake.
Mag-Hytec transmission pan, 08 diff cover.
2" leveling kit. RS9000 Shocks. B&W Turnover Ball/ Companion Hitch. Airlift 5000 airbags.

2012 Heartland 5th wheel. 36' @ 12k pounds.

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post #4 of 11 Old 06-09-2011, 08:00 PM Thread Starter
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Got this job done tonight.

Well worth the 135 bucks into it. Damn that gear oil is expensive now a days. It was more than the cover. The pinion seal was only 10 bucks. Used stainless bolts and washers.

The oil at 74k miles was nasty looking, but there was very little metal on magnet.


Steve
2006 F350 Lariat, 6.0 PSD CC LB 4X4. 100k miles.
Wix coolant filter, Dynomax Ultraflow exhaust, cat mod, Edge Insight CS/with EGT. Sinister EGR delete, EGR cooler delete, up pipe. Looney Tune via SCT X4. S&B Intake.
Mag-Hytec transmission pan, 08 diff cover.
2" leveling kit. RS9000 Shocks. B&W Turnover Ball/ Companion Hitch. Airlift 5000 airbags.

2012 Heartland 5th wheel. 36' @ 12k pounds.

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post #5 of 11 Old 06-10-2011, 06:23 AM
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Congrats on getting it done. I like how it looks and CSIPSD (Joe) has datalogged that it results in a 20* temperature drop by using the 08 diff cover. That's good enough for me.

Shawn Carlson
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post #6 of 11 Old 06-10-2011, 09:29 AM
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Nice! I need to do a fluid change, guess I have to find these first! Sweet!

Colin
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post #7 of 11 Old 06-10-2011, 09:45 AM
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Do it! I got mine a couple of years ago from the Ford dealership and bought the longer bolts at Lowe's. I swapped it out at 60k miles, when I was changing all the fluids in the truck.

Shawn Carlson
EvilEye@powerstroke.org

Proud Navy Vet
2005 F250, CCSB, 6.0 PSD, FX4 (The Sweet Unit is white)
2008 F350, CCLB, 6.4 PSD (Brad-the wife's truck is black)




Engine Mods:
Fluidampr
CCV Reroute (Reinstated)
4" MBRP Exhaust
MTW Stage 1 Turbo
Bulletproof 53V FICM
BulletProof EGR Cooler
BulletProof Water Pump
Riff Raff Intercooler Boots
Gogo Diesel Direct Drive Solenoid
BulletProof All-Aluminum Radiator
BulletProof All-Aluminum Intercooler
BulletProof Oil Cooler System w/ Bypass Filter
SCT w/ Custom Tunes (TSD, DJ's, Innovative, Gearhead, QuickTricks)

Exterior Mods:
Bilstein 5100 Shocks
Icon Adjustable Trac Bar
Firestone RideRite Air Bags
BDS Dual Steering Stabilizer
Aluminum Finned Differential Cover
Reese 16k Manual Slider 5th Wheel Hitch
Icon 2.5" Leveling Kit w/ F-350 rear blocks
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post #8 of 11 Old 06-10-2011, 11:55 AM
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I did it on my Excursion about a year ago and really like it. Beside the cooling benefits, it just plain looks good.

'03 Eddie Bauer 4x4 Excursion 6.0 Diesel, CCV mod, upgraded turbo drain, blue spring fpr kit, 6.4 banjo bolts, zoodad, v code front springs and modified b code rear springs, Bilsteins, Hellwig rear swaybar, '08 rear diff cover, 4x2 liftgate struts, 285 Michelin LTX A/T2's, tinted windows, DVD, XM, GPS
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post #9 of 11 Old 06-10-2011, 01:01 PM
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Quote:
Originally Posted by Evil Eye View Post
Congrats on getting it done. I like how it looks and CSIPSD (Joe) has datalogged that it results in a 20* temperature drop by using the 08 diff cover. That's good enough for me.
I guess that answers my question of whether it's really worth it. I'm sold. Putting it on my list of mods. I really do need to change out the diff fluid at some point.

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post #10 of 11 Old 06-10-2011, 03:36 PM Thread Starter
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I would say that under normal circumstances it really isn't needed. I do however run this truck up around 19k pounds often. It is very hilly around here.

Plus it just plain looks badass. I like it better than the Mag hytec.

Steve
2006 F350 Lariat, 6.0 PSD CC LB 4X4. 100k miles.
Wix coolant filter, Dynomax Ultraflow exhaust, cat mod, Edge Insight CS/with EGT. Sinister EGR delete, EGR cooler delete, up pipe. Looney Tune via SCT X4. S&B Intake.
Mag-Hytec transmission pan, 08 diff cover.
2" leveling kit. RS9000 Shocks. B&W Turnover Ball/ Companion Hitch. Airlift 5000 airbags.

2012 Heartland 5th wheel. 36' @ 12k pounds.

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