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Old 07-10-2019, 01:14 PM
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Which Diff Cover Do You Prefer?

So, I just rolled past 50,000 miles on Delta here and I'm thinking it wouldn't hurt to change out the diff fluids. While I'm at it I'm thinking I might want to go to a beefier differential cover.

I've read through several threads on the subject. Between that and Gail Banks' video series I've learned a lot.

Looking at the various options out here it looks like some of the top picks are ARB, Riddler, Poison Spider, and TeraFlex.

I love TeraFlex and have always been happy with the quality of their products, but the Riddler's and Poison Spider's look like they're designed to assist in the differential sliding over obstacles as they're more rounded and lack the flat surfaces of the other manufacturers.

There seems to have been some concern that the Riddlers would hit the track bar at full lock. I'm running a fairly stock suspension setup with only a TeraFlex leveling kit for now, so I'm not sure if this would be a factor.

Any input would be appreciated.

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Old 07-10-2019, 01:22 PM   #2
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Poison Spyder. If you hold one in your hand you’ll see why. The thing is massively thick, 1/2in in most places. It’s made of ductile iron which is the best material made for that application. It’s got a neat spider 3D casted in you can get creative with. The drain holes are now in the stock location. The screw heads are protected in recessed areas. Did I forget anything?

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Old 07-10-2019, 02:39 PM   #3
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Ruffstuff all day.
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Old 07-10-2019, 02:41 PM   #4
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I got Solids for the rigidity and about half the cost the the others, nothing fancy but do the job
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Old 07-10-2019, 02:54 PM   #5
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I got Metalcloak and they are nicely made and look good. Even took the extra effort to paint the "M" to match the body color.
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Old 07-10-2019, 02:55 PM   #6
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Ruffstuff all day.
I second this. Very professionally built and if you catch them during their frequent sales thay are also very cost competitive.
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Old 07-10-2019, 03:01 PM   #7
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Im looking at getting a set of these Dana covers in blue.

https://spicerparts.com/parts/axle/a...rential-covers
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Old 07-10-2019, 03:08 PM   #8
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Quote:
Originally Posted by Skippman View Post
So, I just rolled past 50,000 miles on Delta here and I'm thinking it wouldn't hurt to change out the diff fluids. While I'm at it I'm thinking I might want to go to a beefier differential cover.

I've read through several threads on the subject. Between that and Gail Banks' video series I've learned a lot.

Looking at the various options out here it looks like some of the top picks are ARB, Riddler, Poison Spider, and TeraFlex.

I love TeraFlex and have always been happy with the quality of their products, but the Riddler's and Poison Spider's look like they're designed to assist in the differential sliding over obstacles as they're more rounded and lack the flat surfaces of the other manufacturers.

There seems to have been some concern that the Riddlers would hit the track bar at full lock. I'm running a fairly stock suspension setup with only a TeraFlex leveling kit for now, so I'm not sure if this would be a factor.

Any input would be appreciated.
Dude I just went down this rabbit hole and decided with SOLID for my D44 front and rear. All in with shipping for front and rear $150, totally beefy awesome DF covers. Save your money for other stuff go SOLID
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Old 07-10-2019, 03:22 PM   #9
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Originally Posted by georgealva View Post
Dude I just went down this rabbit hole and decided with SOLID for my D44 front and rear. All in with shipping for front and rear $150, totally beefy awesome DF covers. Save your money for other stuff go SOLID
I just looked at their site - thinking forget the spicer covers and go solid.

Thanks.
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Old 07-10-2019, 03:33 PM   #10
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i'll bet you can make another 150,000 without needing the armor lol.

i have used arb and solid. they are all good. price and style is the factor
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Old 07-10-2019, 03:58 PM   #11
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I just looked at their site - thinking forget the spicer covers and go solid.

Thanks.
Grab a set of Lube Locker gaskets to insure no leaks much better than RTV IMO.
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Old 07-10-2019, 04:08 PM   #12
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Quote:
Originally Posted by georgealva View Post
Grab a set of Lube Locker gaskets to insure no leaks much better than RTV IMO.
Thank you. I wondered about those lube lockers, not a fan of rtv unless its an emergency.
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Old 07-10-2019, 04:11 PM   #13
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Can't go wrong with the ARB - super popular choice - https://amzn.to/2XEdisR
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Old 07-10-2019, 04:39 PM   #14
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AEV. I got lucky and found one on FleaBay along with a slider on the cheap... for AEV anyway.
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Old 07-10-2019, 04:48 PM   #15
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I use a riddler in the front.
mostly for clearance issues with my old one.i mostly chose it because it closely resembles a stock shape.
that said its also thick and fits very well
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Old 07-10-2019, 05:27 PM   #16
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Grab a set of Lube Locker gaskets to insure no leaks much better than RTV IMO.
Absolutely nothing wrong with RTV unless you don't know how to use it. Save your $.
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Old 07-10-2019, 05:49 PM   #17
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I've got Rancho covers and have no complaints.

Lubelockers are very nice. I hate scraping off RTV.

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Old 07-10-2019, 06:33 PM   #18
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that's why we invented angle tools with wire wheels or buffing wheels
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Old 07-10-2019, 07:48 PM   #19
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Poison Spyder Bombshells and lubelockers.
Gotta say I like the lubelockers.


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Old 07-10-2019, 08:25 PM   #20
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Crane...

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https://craneaxle.com/default/

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Old 07-11-2019, 06:49 AM   #21
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I have the ARB covers front and rear, with lube locker gaskets. I like the dip stick on the ARB covers, along with the fill hole being a vertical hole that I can pour the oil into vs a sideways hole I have to pump the oil into.
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Old 07-11-2019, 07:19 AM   #22
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Before you make your decision, go on YouTube and view the Gale Banks series on Diff Covers. He made a detailed study of the impact of cast aftermarket covers versus the stock factory covers. He used Ram 3500 with the 10.5" rear end as well as a GM 3500 with the same axle. He was looking at the differential fluid dynamics. Very revealing.

Not all aftermarket covers are good and not all are bad. It makes no difference in what he was doing what the outside design looked like, it was the inside. (A view rarely seen in the product descriptions). While the JK does not have that large an axle, the fluid dynamics are as important in a Dana 30 as in a Dana 60.
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Old 07-11-2019, 07:29 AM   #23
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Before you make your decision, go on YouTube and view the Gale Banks series on Diff Covers. He made a detailed study of the impact of cast aftermarket covers versus the stock factory covers. He used Ram 3500 with the 10.5" rear end as well as a GM 3500 with the same axle. He was looking at the differential fluid dynamics. Very revealing.

Not all aftermarket covers are good and not all are bad. It makes no difference in what he was doing what the outside design looked like, it was the inside. (A view rarely seen in the product descriptions). While the JK does not have that large an axle, the fluid dynamics are as important in a Dana 30 as in a Dana 60.
I saw those videos, excellent, they should be mandatory viewing for every truck owner thinking of upgrading diff covers. The covers have the shape they have for a good reason, lots of engineering went to it.

Good thing the flat cover mania has not spread in to the Jeep world (yet).
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Old 07-11-2019, 07:56 AM   #24
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I have the Riddler covers front and rear on my JK Rubicon. They are very beefy and offer a smooth surface for rock sliding. No issues with track bar clearance on mine.

However, for a stock or mild lift, the fill holes are not in the correct location to set the oil level at the bottom of the threaded hole. They seem to be designed for axles which have been angled for higher lifts. If you fill to the bottom of the fill hole on a near stock D44, there will be way too much oil in them and it will find its way out the vents and seals.

I only realized this after I had painted them and was in the middle of the install, so I could not return them. I took some measurements, and made a dipstick to allow me to set the oil level at the stock level, which is below the threads of the fill hole.

If I had it to do over again, I would find a cover of similar thickness which has the fill hole set at the correct height for a near stock D44. It is really not much of a hassle, as I usually only need to drain and refill annually, but filling to the bottom of the threads would be simpler and quicker than having to deal with a dipstick.
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Old 07-11-2019, 08:03 AM   #25
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My results don't agree with Banks' allegations. The stock cover on my Ram, towing, gave about 25 degrees hotter temps than the flat back Mag Hytec.
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Old 07-11-2019, 09:05 AM   #26
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Stock vs ours.



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Old 07-11-2019, 09:43 AM   #27
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I have AEV, front and rear, on the JK. Solid on the TJ.

Nothing wrong with RTV, but Lube Lockers are worth it for the convenience.
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Old 07-11-2019, 10:06 AM   #28
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I went with the ARB. They are the closest in my opinion to the stock shape and I believe they will perform correctly for the fluid dynamics -- aka Banks video.

I like the other features about them, and they are definitely beefy.

ben
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Old 07-11-2019, 10:12 AM   #29
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Thank you. I wondered about those lube lockers, not a fan of rtv unless its an emergency.
Spray them with a nice Blue to match your rig would look sick! Easy little fun art project
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Old 07-11-2019, 11:24 AM   #30
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Lubelockers have one big advantage over RTV. You donít get RTV in the threaded holes! Tell me Iím wrong.

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