Dana 30 and 37's?

Johnny- if you haven't already bought the gears yet, stay away from 5.13 in a Dana 30. Go 4.88


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As mentioned, the pinion on Dana 30 5.13 gear is really really small. I personally would NOT run anything higher than a 4.88 but then, that's just me.
 
Yes I did see ur pic n I am at odds at what to do cus I get so many different opinions frm people the guy that's doin the work is a very reputable Jeep mechanic in So Cal n tells me it will be fine n I wheel w/ a few guys that have beefed up D30 front axles w/ no issues runnin 35" tires like me n guys on the other side tellin me not to do it so its a toss up.

That's what I did and worked, but I had the stock 4.10 gears in it. With the trails I was doing I didn't feel like it would last, so I went and got the PR44, locked and RCV's.

If I was you I would do the PR44. With the $$ your putting into the D30 you will have over half the cost of the PR44 with locker and RCV's.

Just giving you my 2 cents.
 
Well I haven't ordered anything yet I'm meetin w/ my mechanic next week to give him a deposit so I'm glad I found this post before hand


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Its possible to run that 30 for the time being, not sure I'd spend on an ARB for it though. Rcvs and chromo shafts at least have some resale value if and when you decide to upgrade. I'm running the ultimate time bomb right now. 5:13s 37s and RCVs, and did I mention Aussie locker?:eek: But I'm aware of my weakness and willing to except its failure if it happens. That said its gotten me through whatever I've run it through for the last year and a half. Once I can spring for whatever my next axle choice is I won't be looking back.
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What proof of anything do you have to add to this conversation besides what you have read on the Internet? Bonjour

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Proof, as in what? Pictures of my own blown of D30? None. For a reason. The guts of a Dana 30 are way too small for me to ever consider forcing that axle to do something that it doesn't naturally want to do aka locking it. There is a reason I don't have proof of this... because I'm not stupid.

Levi

2013 CG JKU 6-speed
 
That's what I did and worked, but I had the stock 4.10 gears in it. With the trails I was doing I didn't feel like it would last, so I went and got the PR44, locked and RCV's.

If I was you I would do the PR44. With the $$ your putting into the D30 you will have over half the cost of the PR44 with locker and RCV's.

Just giving you my 2 cents.

^^What he said. Why sink any more money in the D30, even if you think you can recover the cost of the bandaid fix, which if it breaks, negates any $ value of the D30 axle you have? Maybe its possible to sell your current functional D30 axle, and use that money to offset towards a PR44 or a D44.

Good luck with your build.
 
I'm in your same boat Johnny. I just recently asked this question and Wayalife was great enough to respond as well as others. The advice that was given to me and mirrors what others are telling you is..If you don't have the money to upgrade the D30 to a Pro Rock 44 you should spend money on a regear, don't go bigger than 4.88 in the D30, and only lock the rear. Don't waste the money on polishing a terd of the 30 as the whole thing is a weak link if you wheel hard. Then just save that money and wheel it until it breaks and have the cash waiting for that PR44 with locker for the repair. The only upgrade they did mention is "C" gusset as that will get you by for a while and on the cheap. Hope that helps.
 
IMO, The locker is the issue there. The dana 30 just shouldn't be locked up, no matter what size tires you are running.

Levi

2013 CG JKU 6-speed

There is nothing wrong with running a locked dana30 with the appropriate sized tires.
When you get into larger tires, yes you will see some damage to axle shafts because of having a locker.
I am the Devils advocate to this whole thread because I ran a locked hp dana30 with 36's for years with stock shafts and no issues(tj not jk)

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There is nothing wrong with running a locked dana30 with the appropriate sized tires.
When you get into larger tires, yes you will see some damage to axle shafts because of having a locker.
I am the Devils advocate to this whole thread because I ran a locked hp dana30 with 36's for years with stock shafts and no issues(tj not jk)

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Exactly. On a TJ. Weight equals traction, which equals stress on the internals of an axle. The same reason that XJs get away with running the smaller axles with lockers and bigger tires... They don't weigh what a JK does or have the power that a JK does. The rules are seriously different with other Jeeps when compared to JKs. But IMO... I repeat IN MY OPINION a locked dana 30 on a JK is a bad idea regardless of what size tires you are running. IF you wheel it of course.

Levi

2013 CG JKU 6-speed
 
You guys that are going to run the D30 with gears and a locker, perhaps you should consider cryo or heat treating everything for the little bit of added strength?
 
I realize weight is an issue but remember I said my JK is a 2 door and they r much lighter than the 4 door. Anyways so much good info to consider I really appreciate it


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I realize weight is an issue but remember I said my JK is a 2 door and they r much lighter than the 4 door. Anyways so much good info to consider I really appreciate it


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Reguardless I wouldn't run 37's on a d30. People do but it isn't recommended. Just plan on getting a new axle like a pr44 sooner rather than later if you do
 
You guys are seriously brand bashing here! I ran a locked Dana 27 with 5.38s on 40 mm hotwheel tires and it didn't blow up!!! ( enter family member threat here)

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IF you wheel it of course.

Levi

2013 CG JKU 6-speed

So are you trying to say I don't wheel?




:D
OK, I can only say irregradlessly so many times and not have someone tell I am trying to use it as a joke. Sorry Levi I was just messing with you- yes, if the locker wasn't in the dana 30, the carrier would probably still be fine.
 
So are you trying to say I don't wheel?




:D
OK, I can only say irregradlessly so many times and not have someone tell I am trying to use it as a joke. Sorry Levi I was just messing with you- yes, if the locker wasn't in the dana 30, the carrier would probably still be fine.

Haha.... okay. I was beginning to wonder.

Levi

2013 CG JKU 6-speed
 
Did everyone on here know that there's a guy who ran 44's on a D30 with 5.13's and he BEAT THE SHIT* out of his rig!!! He had no problems with his D30 at all! :rock:


















*beat the shit out of=parking on to side of theroad on a level ditch to watch fireworks last 4th of July
 
I'm running 5.13's in a 30 with 35's, not locked is it weak yes do i like the performance yes when I get the money together it's pro rock time, for the time being easy on the skinny pedal and strategically picking my lines. Oh wait it get s better it's sleeved gusseted and trussed lol flame away :D

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Did everyone on here know that there's a guy who ran 44's on a D30 with 5.13's and he BEAT THE SHIT* out of his rig!!! He had no problems with his D30 at all! :rock:


















*beat the shit out of=parking on to side of theroad on a level ditch to watch fireworks last 4th of July

LOL! Good one!
 
I'm running 5.13's in a 30 with 35's, not locked is it weak yes do i like the performance yes when I get the money together it's pro rock time, for the time being easy on the skinny pedal and strategically picking my lines. Oh wait it get s better it's sleeved gusseted and trussed lol flame away :D

no one will FLAME you or anyone for what they choose to do with their rig and what works for them. What we regulars, mods, and Admin will flame EVERYONE for is, recommending the above mentioned set-up to a newbie or someone asking for a solid/worry free build plan. Just as you said, its not optimal, but you've made it work.

Hell, Drew at ORE ran 37's for a few years on a D30 open. He babied it without a failure, but I can Guarantee that he will never recommend that set-up to anyone UNLESS its stricktly a road/show Jeep. I know a guy who can tight rope across the skyscrapers and has done it without a safety net, but I wouldnt recommend that you do it! ;)
 
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