JK build plan

[ErikOffroad]

So I have a tj and don’t know too much about jk stuff but my buddy Matt has a jk that we are looking to get a build going on.
Right now it’s a 2008 stock 4 door. It has a 44 rear and a 30 front. His end goal is gonna be lockers and 37’s

This is the Currie lift kit we are looking at using

RockJock RockJock Suspension System for 07-10 Jeep Wrangler JK

The RockJock® JK off road suspension system allows for efficient clearance of up to 37 tall tires (with minor trimming) on any model of the 2 door or 4 door Jeep® JK Wranglers.

www.quadratec.com

idk what shocks we want to use yet.
Mainly building it for street and trail use with some mud.
Other questions i have is what would have to be done to the axles in order to withstand a 37 inch tire
With a locker.
Is a fully built Dana 30 up to the job or are we gonna have to upgrade

 

[IndominusHuman]

I would say a upgrade is needed. 37's are a stretch with stock dana 44s so i feel like it would be a risk.

 

[Chris]

@Clayton Off Road may be of some guidance here, so I'm going to tag them in this.

I will say that the Dana 44 axles under a JK will handle 37s much better than a TJ, that's for sure. Still, you'll want alloy axle shafts for sure, and you may want to swap out that front Dana 30 for a Dana 44 from a Rubicon (especially with 37s).

As with anything Currie, you can't go wrong with their parts.

I've heard people say they run 37s on a Dana 30 JK front axle just fine, but they are running alloy shafts and a locker. They also don't drive it like idiots, so that's part of it as well. If it was me, I'd honestly just swap in a Dana 44 front from a Rubicon though, since they are much cheaper than their TJ counterparts (since they made so damn many of them).

 

[ErikOffroad]

I think the main plan is gonna be to get this lift in and run it on 35 inch tires and save money for axles then. I’m sure we can find a 44 for the front with how many people do Dana 60 swaps.
for shocks would u go with the rancho? He was talking about getting some fancy ones with remote reservoirs, but I think that’s a area where we can potentially save some money

 

[Chris]

Yep... wheel it until you break it. Nothing wrong with that at all! At least then you'll know for sure what you need to upgrade.

Rancho RS5000X shocks are not only excellent for the TJ, they are also excellent for the JK as well, so you can't go wrong with them. Not to mention they are cheap, which is another plus.

 

[Oscar-Mike]

This forum is a money pit.

 

[Clayton Off Road]

So I have a tj and don’t know too much about jk stuff but my buddy Matt has a jk that we are looking to get a build going on.
Right now it’s a 2008 stock 4 door. It has a 44 rear and a 30 front. His end goal is gonna be lockers and 37’s

This is the Currie lift kit we are looking at using

RockJock RockJock Suspension System for 07-10 Jeep Wrangler JK

The RockJock® JK off road suspension system allows for efficient clearance of up to 37 tall tires (with minor trimming) on any model of the 2 door or 4 door Jeep® JK Wranglers.

www.quadratec.com

idk what shocks we want to use yet.
Mainly building it for street and trail use with some mud.
Other questions i have is what would have to be done to the axles in order to withstand a 37 inch tire
With a locker.
Is a fully built Dana 30 up to the job or are we gonna have to upgrade

Our 07 JK started as a sport with a D30 and D44 axle. Once we installed 37s that axle lasted 1 day wheeling. We are a little hard on our vehicles, so upgrading to a locker, axle upgraded shafts like RCVs, and adding some sort of front truss would probably help. But 37s are pushing the capabilities of a D30. We upgraded to an aftermarket axle, with a ARB locker, RCVs and reused our outer knuckles unibearing, breaks and steering. This was a good balance between strength and budget, and we never had an issue with the axle after that.

We offer 2.5, 3.5 and 4.5” lift kits available in our Overland Plus and Premium versions, both of which are 100% bolt on kits that require zero welding. Premium kits use the Currie johnny joints at one end, which are a great articulating joint that is greaseable and rebuildable. But we match them with a Giiro joint at the other end in the Premium version. The Giiro joint is a maintenance free, self-centering, dual durometer bushing. This helps to absorb road noise and vibrations, and also allows us to use these press in joints down low in areas that will see more mud, water and sand. They are a sealed unit so nothing to grease or worry about getting mud, sand or water in.

However these days, our most popular lift kit is the Overland Plus, since it uses the dual durometer, sealed, maintenance free bushings at both ends. This offers an amazing on-road ride, no maintenance control arms which come with our lifetime warranty, and still offer the flex and off-road performance Clayton products are known for.
Both kits also come with an adjustable front track bar which is important when setting proper angles and geometry after a lift kit is installed.

Good luck with your build, and let us know if you have any questions about suspension, or even any general off-road questions. We're always happy to help.