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Old 11-29-2007, 08:49 PM   #1
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How to make the front D30 stronger?

Hello!

I´ve a front D30 with 27 spline ARB locker and 4.56 gears. Since I installed the 35s I´m a bit afraid about damaging the axle off the road.
That´s why i want to make the D30 stronger.

What is the best chromoly kit for the D30? I must order the parts at 4wd.com because of a big in store credit.
What other Parts do I have to improve? Or is teh chomoly kit complete?

I think my rear D44 is strong enough for 35s. am I right?

Thanks in advance for your help.

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Old 11-29-2007, 09:40 PM   #2
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http://www.4wd.com/productdetails.as...95&partID=3994
I got 35's not to long ago, I have those alloy USA shafts waiting to go in and the only other thing im going to get for the front axle is the currie steering setup.
the shafts come assembled already with the u-joints, all you have to do is swap your hub/bearing onto it and put em in.

btw i got the shafts for $500 for the set from northridge4x4, ask 4wd if theyll match the price...

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Old 11-29-2007, 09:47 PM   #3
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I've been told the d30 will hold up but the d35 is a disaster waiting to happen. I've quite a bit about the super 30 and 35 kits. I'm not sure were you get them though.
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Old 11-29-2007, 09:57 PM   #4
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you will be fine with 35's and the d30. Alloy shafts would be even better. I ran 35"s on the d30 for years and never had a problem. Im running 38"s on it now and still fine. I have videos of me beating the crap out of it with 38's and no problems so far. Maybe im lucky. I know many people that run 35's on the stock d30 and have no problem. Even locked. Your d44 is should be fine aswell.
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Old 11-29-2007, 09:59 PM   #5
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go to the junkyard and find an xj front high pinion dana30 (with out the axle disconnect)
then get the alloy 30 spline shafts and new 30 spline arb locker
and you should be fine with 36's
if you arnt heavy footed you could even run 37"s but if you are heavy footed then you will blow ring and pinions with 37's (since that becomes your weak point)
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Old 11-29-2007, 10:40 PM   #6
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Quote:
Originally Posted by mr4x4 View Post
go to the junkyard and find an xj front high pinion dana30 (with out the axle disconnect)
then get the alloy 30 spline shafts and new 30 spline arb locker
and you should be fine with 36's
if you arnt heavy footed you could even run 37"s but if you are heavy footed then you will blow ring and pinions with 37's (since that becomes your weak point)
Yeah, that's gonna be tuff since he's in Germany, the junkyards aren't exactly overflowing with Jeep parts!

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Old 11-29-2007, 10:45 PM   #7
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yeah that sucks maybe he could find some mog axles easier then an xj axle
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Old 11-30-2007, 01:09 PM   #8
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Nicolas, since you've just sunk a ton of money into the front 27 spline ARB I'm going to stay away from the 30 spline shaft upgrade options.

However you can upgrade your outers and your Unit Bearings to 30 spline along with some alloy shafts and a good Ujoint. Ox, CTM, Alloy's X-Joint etc...

These things will help your D30 survive as long as humanly possible with 35 and larger tires. The only other thing I might suggest would be some beefier Lower Control Arm mounts. A lot of places make them to be welded on either around your existing mounts or to cut off the old ones and weld the new ones on.
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Old 11-30-2007, 01:15 PM   #9
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your right. i will stay away from a 30-spline upgrade.

is there a complete kit with all things that i need to upgrade the axle? du you have a link to it at 4wd.com?
my english is ok, but i don´t know technical words like u-joint, bearings, ...

i don´t want to go larger than 35s. but for the 35x11.5x15 silverstone MTs i´ll definately need a stronger front axle. my parents buy them for me as a x-mas gift.

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Old 11-30-2007, 01:46 PM   #10
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Been runnin D30 & Super D35 with 4.10's, ARB, and 35's for some time now and have had zero problems.

Like somebody said, the 30 should do just fine. Pick up a set of Allow USA inners and you'll be sittin pretty.
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Old 11-30-2007, 01:48 PM   #11
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Old 11-30-2007, 01:54 PM   #12
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Yup, that looks like the set
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Old 11-30-2007, 02:51 PM   #13
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those tires look awesome! a mix between a Bogger and an average mud tire.
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Old 11-30-2007, 02:53 PM   #14
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the new silverstone MT117 extreme are the best mud tires. they comefrom the same factory than the simex extreme trekker.

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