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General Forums => The Mess Hall => Topic started by: drunkencityworker on August 17, 2009, 05:58:05 AM

Title: diff cover clearance
Post by: drunkencityworker on August 17, 2009, 05:58:05 AM
ok. so the 8.8 is in. i still have stock diff cover. i want to upgrade but also want gas tank skid in future. i have heard of clearance issues. has anyone had this prob? any solution ideas?
Title: Re: diff cover clearance
Post by: Jesse-James on August 17, 2009, 07:10:11 AM
I'm running a Poison Spyder rock ring, no clearance issues. In fact the axle will be moving back another inch with no issues. I'll see if I can get a pic from the side.

(http://i68.photobucket.com/albums/i33/jlafaive/misc/05121644.jpg)
Title: Re: diff cover clearance
Post by: Mozman68 on August 17, 2009, 08:02:57 AM
People always talking about clearance issues with differentials makes me pissed....Unless you are a competitive rock crawler or are going from D30/35 to D60's with no change in lift, there simply isn't enough of a difference.

A bunch of web wheelers on another site couldn't stop giving me crap about the loss of clearance I would be having by going to D60's, but between the minor change in lift height as well as tire height, I gained quite a bit.....from my thread build:



Before....3" lift, 31" tires, stock D30/35 combo, stock fenders/flares.

After....4" LA lift, 35" tires, front and rear HP D60's, flat fenders.

Front Before:
(http://farm4.static.flickr.com/3157/2371822205_a2f01fb6e6.jpg)

Front After:
(http://farm4.static.flickr.com/3007/2461566270_a7e6c07c8c.jpg)

Front bumper height from 22.75"h to 26.75"h

Front diff clearance from 9.25"h to 10.5"h


Side Before:
(http://farm3.static.flickr.com/2072/2371822373_724c94f4cd.jpg)

Side After:
(http://farm3.static.flickr.com/2048/2461566386_347e6461ce.jpg)

Front wheel well clearance from 7"h to 8.25"h

Rear wheel well clearance from 7.75"h to 8.75"h

T-case clearance from 13"h to 19"h

Rocker guard clearance from 18"h to 23.75"h


Rear Before:
(http://farm4.static.flickr.com/3108/2372658984_a25775364c.jpg)

Rear After:
(http://farm3.static.flickr.com/2333/2460733157_422e6ebd6b.jpg)

Rear bumper height from 19"h to 23.75"h

Rear diff clearance from 9"h to 10.75"h
Title: Re: diff cover clearance
Post by: Jesse-James on August 17, 2009, 08:15:06 AM
Whoa there Moz, he's talking about between the cover and the tank.
Title: Re: diff cover clearance
Post by: Mozman68 on August 17, 2009, 08:30:56 AM
uuuuhhhhhh.......nevermind then......... :sleep:
Title: Re: diff cover clearance
Post by: smashcoast on August 17, 2009, 08:34:11 AM
Out here in CA there are alot of rocks! I need some front and rear diff protection but why cant i find any that cover the U joints as well?

Did you swap the 8.8 yourself? If so how difficult was it?
Title: Re: diff cover clearance
Post by: drunkencityworker on August 17, 2009, 08:46:58 AM
i have seen pinion skids for 14bolts. i think when you do sye you point pinion up toward the tcase and takes it up outta harms way a bit.
Title: Re: diff cover clearance
Post by: drunkencityworker on August 17, 2009, 08:52:59 AM
technicaly the sye was the hardest. a couple guys i have wheeled with at greatlakejeepthing helped me in return for histeer knuckle. a welder is a must. pretty straight forward otherwise
Title: Re: diff cover clearance
Post by: Jesse-James on August 17, 2009, 08:58:55 AM
I'm thinking of doing something as well, sprung the flange ears on a rock this weekend and shot a cap out of the joint. Keep us posted if you find/make something.

(http://i68.photobucket.com/albums/i33/jlafaive/Badlands09/DSC03795.jpg)
Title: Re: diff cover clearance
Post by: drunkencityworker on August 17, 2009, 09:01:14 AM
thanks jj, i wonder if psc has them in there new line. those look easy to wash mudd out of
Title: Re: diff cover clearance
Post by: drunkencityworker on August 17, 2009, 09:11:30 AM
i did see one shaved then a pinion skid welded on with a ring the driveshaft goes thru. i will look
Title: Re: diff cover clearance
Post by: drunkencityworker on August 17, 2009, 09:16:27 AM
hey mozz, nice tj. i wanna do something simular to my rear fenders. do you have more info maybe a link. would be nice to match  the clearance i have in the front with my tube fenders.
Title: Re: diff cover clearance
Post by: FourbangerYJ on August 17, 2009, 09:31:34 AM
ok. so the 8.8 is in. i still have stock diff cover. i want to upgrade but also want gas tank skid in future. i have heard of clearance issues. has anyone had this prob? any solution ideas?

A good buddy of mine is running the 8.8 with a Riddler cover. He has the PSC cover that JJ is running. Before he switched. He also has a FXD gas tank skid. He is running 4- 4.5 inches of lift and has run 33's and now on 35's with no problem. His YJ is a 90.
Title: Re: diff cover clearance
Post by: Mozman68 on August 17, 2009, 12:57:05 PM
hey mozz, nice tj. i wanna do something simular to my rear fenders. do you have more info maybe a link. would be nice to match  the clearance i have in the front with my tube fenders.

You can see the work in my build thread....JCR Offroad did the work.  The rear is Poison Spyder corners with JCR flares welded on and then they welded the whole thing to their rocker guards so there wouldn't be a seam.
Title: Re: diff cover clearance
Post by: jagular7 on August 17, 2009, 03:20:03 PM
I have an 8.8 in my TJ and use a 'Solid' cover. I have adjusted my control arms be push the axle as far back as possible. I have less than a pinky thickness between the cover and the skid plate for rubbing. If it does rub, it is not a big deal.

What you need to remember is the rear axle pivots on the centerline of the axle housing during suspension cycling. It doesn't move up and down with the tires. About the only time would be when the Jeep jumps in the air.
Title: Re: diff cover clearance
Post by: aw12345 on August 17, 2009, 05:12:48 PM
It can get pretty tight on a TJ especially when you try to push the axle back.
For U joint protection use a Ninth degree. AEV diff slider just make sure it doesn't gouge the drive shaft. With enough lift it stops being a problem because the pinion gets turned up quite a way with a cv shaft. I have scraped my front straps which has since been solved with a high pinion axle the rear has never been scratched even though it has belly flopped on rocks quite a few times
Title: Re: diff cover clearance
Post by: drunkencityworker on August 17, 2009, 09:35:07 PM
so which of the cover offers the most clearance. the sites talk bout thickness of cover and ring section. but not how far out it hangs. i know ruff stuff is one of the bigger ones
Title: Re: diff cover clearance
Post by: drunkencityworker on August 17, 2009, 09:39:59 PM
personnelly i am going to hold off on pinion skids. gas tank skid and diff cover are taking priority till it becomes an issue
Title: Re: diff cover clearance
Post by: Jesse-James on August 17, 2009, 10:46:29 PM
personnelly i am going to hold off on pinion skids.

I have yet to see one on an 8.8 anyway. Sure would like to do something though.
Title: Re: diff cover clearance
Post by: aw12345 on August 18, 2009, 05:19:33 AM
Just built one out of 3/16 steel plate it's not all that hard and when it overla[s the edge of the diff cover you can pretty much stick with the stock one since it will protect it from peeling open on rocks.
Title: Re: diff cover clearance
Post by: drunkencityworker on August 18, 2009, 05:56:43 AM
could you post some pics up?
Title: Re: diff cover clearance
Post by: aw12345 on August 18, 2009, 03:06:36 PM
Mine is on a dana44 but you get the idea
http://4bangerjp.com/forums/index.php/topic,4695.0.html

You can combine it with the ring that JJ has over his diff cover make the front longer to protect the pinion Yoke and you are golden