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Old 07-20-2019, 09:56 AM
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Build ideas.

Looking for ideas on building my JK.

At what point does a D44 swap become mandatory? If I stay 33 is the D30 ok? If I go 35 or bigger, the D44 is a must, right?

Staying 33 is what Im thinking, but I saw a Jeep with 37s on it that looked impressive.

Got a price on the Mopar 2 lift (front driveshaft included) from my dealer that I am happy with.

Being its my DD, thinking 33s - but open to suggestions.

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Old 07-20-2019, 10:48 AM   #2
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I think I literally think about this every day. My jeep isn't a daily driver though just a fun weekend vehicle. I currently run big 33s (295/70r17) and my future plans bounce back and forth between stopping at 35s and a regear of the 30 and welding on gussets maybe a truss OR 37s and a heavy duty aftermarket 44 like a Dynatrac. There's quite a bit more needed to reliably run 37s, but from my research, a lot of it is recommended for 35s as well if you really wheel the thing.
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Old 07-20-2019, 02:09 PM
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Thanks! Im thinking hard about a 3 1/2” lift and 37”s - I love the look of Krista’s JL with 37” Firestones.

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Old 07-20-2019, 03:49 PM   #4
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Absolutely love my setup with 3.5 and 37s, but I did a lot to make sure I had confidence to wheel it and still have it as a daily driver. What's your budget?
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Auto / 4.56 Gears / ARB Front, Auburn Ected Rear Locker & LSD / G2 Core 44 35 Spline Axles / Alpine 9-Speakers & Sub / MC 3.5" w 6pak shocks / 37" KM3s on Method 105 Beadlocks
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Old 07-20-2019, 04:23 PM   #5
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Quote:
Originally Posted by WillB View Post
Looking for ideas on building my JK.

At what point does a D44 swap become mandatory? If I stay 33 is the D30 ok? If I go 35 or bigger, the D44 is a must, right?

Staying 33 is what Im thinking, but I saw a Jeep with 37s on it that looked impressive.

Got a price on the Mopar 2 lift (front driveshaft included) from my dealer that I am happy with.

Being its my DD, thinking 33s - but open to suggestions.
ive seen people wheel with 37s on a d30. It all comes down to how you wheel and what you wheel on. However no matter what the tubes will start to bend over time with wheeling.

Mudd and slick trails? Forget about it.

Slickrock and high grip stuff and not to much skinny pedal. You will be fine.


Here is my best advice for you. Leave it be if it is your DD. If you are taking the step up to 37s and bigger axles you might as well use them and get into some tougher stuff. Or you are wasting your money IMHO. And you dont want to take your DD on tough trails and risk having it down for repairs for a week.

However if you just want to run 37's on the street for now. Your Dana 30 will be just fine. The Dana axles that came in the JK's are stronger than the TJ and CJ axles.
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Old 07-20-2019, 05:53 PM
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ive seen people wheel with 37s on a d30. It all comes down to how you wheel and what you wheel on. However no matter what the tubes will start to bend over time with wheeling.

Mudd and slick trails? Forget about it.

Slickrock and high grip stuff and not to much skinny pedal. You will be fine.


Here is my best advice for you. Leave it be if it is your DD. If you are taking the step up to 37s and bigger axles you might as well use them and get into some tougher stuff. Or you are wasting your money IMHO. And you dont want to take your DD on tough trails and risk having it down for repairs for a week.

However if you just want to run 37's on the street for now. Your Dana 30 will be just fine. The Dana axles that came in the JK's are stronger than the TJ and CJ axles.
Thanks. I may leave it be and upgrade hard (u joints, ball joints, axles, etc.) parts as they get replaced. But im still thinking the Mopar 2” lift kit regardless.
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Old 07-20-2019, 07:35 PM   #7
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Dana 30 with axle sleeves & weld on kit to reinforce the Cs.

Those 2 items will help its ton and not break the bank.




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Old 07-20-2019, 07:53 PM
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Dana 30 with axle sleeves & weld on kit to reinforce the C’s.

Those 2 items will help its ton and not break the bank.




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Thank you. Found the Synergy kit locally.

https://www.justjeeps.com/jeep-wrang...or-models.html
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Old 07-21-2019, 05:52 AM   #9
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If you are even remotely considering 37s (which I personally would not recommend on a D30) - full on truss rather than sleeves. And just leave the wallet open....
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Old 07-21-2019, 08:42 AM   #10
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You honestly shouldnt even waste your money on that axle. I had a TJ with a dana 30 and i beat the shit out of it for years on 33s. Clutch drops you name it. And i never broke it. However if you go up to 37s i wouldnt be as confident.

The magazines promote aftermarket stuff because they get paid to do it. This creates a rhetoric that they are bad and can do x y and z. But to be honest thats not true. The d30 isnt necessarily a "weak" axle but its not strong by any means of the word. They can actually hold to a good amount of abuse.

Think of it this way, if dynatrack and currie told you that you could get away with a weaker axle if you were careful. They wouldnt sell as many.

Ball joints, u joints, wont really do much for you. The d30 knuckles are small and id rather keep the weak point in the shafts and u joints than the knuckles. If you upgrade your dana 30 you are creating the weak point somewhere else. That if why you see a lot of knuckle failures on dana 30s. People truss them blah blah blah but leave the kuckles stock... And they snap which is then very bad because you generally have to pony up and just buy a whole new axle after that.



Once again here is my honest opinion. Save your money. Buy some aftermarket front and rear axles at the same time with new everything and just bolt them in. It will save you time. And headache. And it will honestly probably be cheaper than paying someone to weld a truss on you dana 30 and everything else. You can get some deeper gears with it for your 37s and you will be able to drive it to the trail and back as long as you dont snap a drive shaft. But even then you can still get home.

Leave the dana 30 be till you can afford to slap a new axle in. Or wheel it lightly and just enjoy it.

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Old 07-21-2019, 09:34 AM
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You honestly shouldnt even waste your money on that axle. I had a TJ with a dana 30 and i beat the shit out of it for years on 33s. Clutch drops you name it. And i never broke it. However if you go up to 37s i wouldnt be as confident.

The magazines promote aftermarket stuff because they get paid to do it. This creates a rhetoric that they are bad and can do x y and z. But to be honest thats not true. The d30 isnt necessarily a "weak" axle but its not strong by any means of the word. They can actually hold to a good amount of abuse.

Think of it this way, if dynatrack and currie told you that you could get away with a weaker axle if you were careful. They wouldnt sell as many.

Ball joints, u joints, wont really do much for you. The d30 knuckles are small and id rather keep the weak point in the shafts and u joints than the knuckles. If you upgrade your dana 30 you are creating the weak point somewhere else. That if why you see a lot of knuckle failures on dana 30s. People truss them blah blah blah but leave the kuckles stock... And they snap which is then very bad because you generally have to pony up and just buy a whole new axle after that.



Once again here is my honest opinion. Save your money. Buy some aftermarket front and rear axles at the same time with new everything and just bolt them in. It will save you time. And headache. And it will honestly probably be cheaper than paying someone to weld a truss on you dana 30 and everything else. You can get some deeper gears with it for your 37s and you will be able to drive it to the trail and back as long as you dont snap a drive shaft. But even then you can still get home.

Leave the dana 30 be till you can afford to slap a new axle in. Or wheel it lightly and just enjoy it.

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Thanks a ton! Will do - I think id rather go that route. Will price out a D44 at the auto wreckers vs a new one.
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Old 07-21-2019, 06:37 PM   #12
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Thanks a ton! Will do - I think id rather go that route. Will price out a D44 at the auto wreckers vs a new one.
Keep an eye out on craigslist or marketplace or call up local 4x4 Shops. A lot of them do axle swaps for newer JK's and have to put the axles out on the self or in the corner of the shop. Call them up and see if they have an axles or give them your number and tell them to give you a buzz if they get some in from a customer.

Just some food for thought. You get some JK axles for cheap and the shop doesn't have to store the axles and find a buyer. I work in a custom restoration shop and we have stuff piling up all the time. Trust me sometimes it would be nice if someone would come by and purchase some of the 5 spare engines we have laying around.
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Old 07-23-2019, 01:53 PM   #13
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The weak part on a D30 (as I understand it) is the 27-spline axle shafts. So chromolly axle shafts and some welded C gussets should allow a D30 to handle 35" tires just fine.

As mommymallcrawler mentions, 37's are a whole other story.

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