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Unread 10-10-2012, 10:40 AM   #1
smartbutlazy374
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Axle swap to run 37s?

Im on a 2011 JKU (not a rubicon) and I am looking to go with 37s soon, Is it possible for me to just sleeve, trusset and gusset the d35? I plan on doing a re-gear to 5.13s so im set there. I'm just curious if i need to upgrade to a 44 upfront to roll 37s, or if I can just mod the existing 35.. and another question, will the stock rubicon 44 fit on my sport? Forgot to mention, yes this is jeep is used to crawl, but not often. Thanks guys!

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Unread 10-10-2012, 11:52 AM   #2
RockyClymer
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First, you have a D30, not a D35. Yes, you can sleeve, gusset and run Chrome moly, but that might still be marginal for 37s, esp after regearing which will use a smaller pinion gear IMO. Yes, you can upgrade to a D44 and even a built D44 while at it, and yes, the D44 off of your JK sport will fit, not from a TJ sport though
.
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Unread 10-10-2012, 12:58 PM   #3
smartbutlazy374
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Always get confused on the whole d35 d30 stuff, im told both. My friend said she would give me her 44s when she runs some 60s, so thanks for the input!
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Unread 10-10-2012, 01:26 PM   #4
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You have a Dana 30 and a Dana 44. Most TJs came with a Dana 30 and Dana 35 set. Still, I would beef up the front end substantially to even begin to talk about running 37s reliably

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Unread 10-10-2012, 02:07 PM   #5
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You can beef up the housing to be as strong as a sleeved & gusseted JK Rubi front D44. You can add an ARB and you can also run RCVs. However, your final weak spot is going to be the ring & pinion itself. I threw a ton of money at my Rubi's front axle, but if I had to do it all over again I'd just get a Pro Rock 44 and be done with it.
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Unread 10-10-2012, 03:38 PM   #6
ArticRubi
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I would recommend running a full width axle truss. Artec sells a whole "front axle armor" kit that gives you the truss, control arm skids, and gussets for your inner knuckles.
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Unread 10-10-2012, 03:44 PM   #7
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Unread 10-10-2012, 06:22 PM   #8
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Lots of options here, take your time, do your homework and donít cut corners.
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Unread 10-11-2012, 08:13 AM   #9
SoK66
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Ditto. Against our advice, one of my wheeling buddies has built his '93 YJ's D30 to nuclear bunker strength with trusses, gussets, chromolys, CTMs, etc. Although he has a D44 sitting in his garage he refuses to replace the D30 it until it grenades, utterly. He runs Carnage (Buena Vista, CO) with it regularly. So far it makes it through every time.
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Unread 10-11-2012, 08:25 AM   #10
smartbutlazy374
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Cool, thanks guys. I probably will just build up my 30 until it goes, then I'll just build up the 44 when I get it.
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Unread 10-11-2012, 08:32 AM   #11
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Quote:
Originally Posted by ArticRubi View Post
I would recommend running a full width axle truss. Artec sells a whole "front axle armor" kit that gives you the truss, control arm skids, and gussets for your inner knuckles.
I just helped a buddy from another forum put this kit on last weekend and I definitely recommend it. Beefy as hell, great price ($200ish?)
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Unread 10-11-2012, 09:40 AM   #12
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Quote:
Originally Posted by SoK66 View Post
Ditto. Against our advice, one of my wheeling buddies has built his '93 YJ's D30 to nuclear bunker strength with trusses, gussets, chromolys, CTMs, etc. Although he has a D44 sitting in his garage he refuses to replace the D30 it until it grenades, utterly. He runs Carnage (Buena Vista, CO) with it regularly. So far it makes it through every time.
It always does, until it doesn't. That's very nice of him to put it on the people around him to get it out when his time bomb goes off.
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Unread 10-11-2012, 09:52 AM   #13
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The only difference between the D30 and the D44 is the size of the differential housing. Everything else is the same. The D44 can run up to a 5.89 gear.

I'm running a stock D44 up front, but is gussetted and sleeved and am on 37's. Chromoly axle shafts are on my must-have list. Already snapped an axle shaft. But that was due to running 4.10's and 37's with a supercharged engine while crawling.
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