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Old 10-13-2016, 08:31 PM
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Dana 30 HP 5.13 gears

I've seen a few manufacturer’s now offer 5.13 gears for High pinion YJ/XJ Dana 30's now and am currious if anyone is actually running them? I kind of want to only because I'm good at gear install and want to test the "strength" myself. I have low expectations but when I finish my engine swap, I may install them just to satisfy my curiosity.

Dana 30 Ring and Pinion

ZG D30R-513R: USA Standard Ring & Pinion replacement gear set for Dana 30 Reverse rotation in a 5.13 ratio


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Build Thread 1989 YJ, Chevy 355 TBI, 700r4, np231 sye/wide chain/6 pinion planetary, D30/8.8/4.56, 33" A/T's, bds 3.5" springs, 1" Boom Shackles, crossover heim steering
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Old 10-14-2016, 10:09 AM   #2
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What size tires are you running?

The tire size for 5.13 gears would probably severely overstress the Dana 30...

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Old 10-14-2016, 08:32 PM
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What size tires are you running?

The tire size for 5.13 gears would probably severely overstress the Dana 30...
Believe me bud, I know all about how weak these axles are believed to be, but out of all the gear sets I've installed for others with dana 30's (around 20 something) I've only had one gear set fail which was a motive 4.56 set that actually sheared the pinion at the yoke. I've installed all the different gear sets in dana 30's for many in my club and friends, and I haven't seen any other ring and pinion breaks. I still want to find another Dana 44 but I might just install 5.13's in my dana 30 in the mean time just so I can see how they do. If they break I'm out 2 hours of labor I did myself and $200, not to big a deal to me. If these do okay, I might recommend them to some 4 banger owners I know with 35's. But I figure with me having a v8 and 35's would be the best way to put a gear set through the ringer.
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Build Thread 1989 YJ, Chevy 355 TBI, 700r4, np231 sye/wide chain/6 pinion planetary, D30/8.8/4.56, 33" A/T's, bds 3.5" springs, 1" Boom Shackles, crossover heim steering
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Old 10-29-2016, 09:56 PM   #4
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Originally Posted by c5wagner View Post
Believe me bud, I know all about how weak these axles are believed to be, but out of all the gear sets I've installed for others with dana 30's (around 20 something) I've only had one gear set fail which was a motive 4.56 set that actually sheared the pinion at the yoke. I've installed all the different gear sets in dana 30's for many in my club and friends, and I haven't seen any other ring and pinion breaks. I still want to find another Dana 44 but I might just install 5.13's in my dana 30 in the mean time just so I can see how they do. If they break I'm out 2 hours of labor I did myself and $200, not to big a deal to me. If these do okay, I might recommend them to some 4 banger owners I know with 35's. But I figure with me having a v8 and 35's would be the best way to put a gear set through the ringer.
yeah i'd be curious to see how they hold up.

i've always been told not to go deeper than 4.56 in the d30 because the ring gear starts to get a little thin/weak.

funny you say the only failure you've seen is motive 4.56's... that's exactly what I'm running. Timebomb? Guess we'll see!
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Old 10-29-2016, 10:10 PM
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yeah i'd be curious to see how they hold up.

i've always been told not to go deeper than 4.56 in the d30 because the ring gear starts to get a little thin/weak.

funny you say the only failure you've seen is motive 4.56's... that's exactly what I'm running. Timebomb? Guess we'll see!
I have the motive 4.56's myself D30/8.8 and I'm not worried about it. Motive makes solid products and they warrantied that gear set without question. I've noticed dana 30 gears seem to hold up fine when you're not mashing the skinny pedal all the time and if they're set up perfectly by someone who really knows what they're doing.

I got to install these new 5.13 dana 30 gears for someone in my club with a 4 banger TJ so low pinion to boot and they broke in great with a very nice wear pattern. He's running 35's and has done a few black diamond trails around my neck of the woods without problem. He had 4.88's before and the pinion between the 4.88 and the 5.13 was exactly the same size but a bit different in tooth angle cut. I'd say the gear strength is about the same as 4.88's so if you're comfortable with 4.88 gears you might as well go 5.13. Both 4.88/5.13 have 8 pinion teeth and 4.56 has 9...

I might just give them a go when I get my engine swap done just to really test them...
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Build Thread 1989 YJ, Chevy 355 TBI, 700r4, np231 sye/wide chain/6 pinion planetary, D30/8.8/4.56, 33" A/T's, bds 3.5" springs, 1" Boom Shackles, crossover heim steering
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Old 10-30-2016, 05:18 PM   #6
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I have the motive 4.56's myself D30/8.8
I've noticed dana 30 gears seem to hold up fine when you're not mashing the skinny pedal all the time and if they're set up perfectly by someone who really knows what they're doing.
question for you then- how can I tell if my gears were set up properly?
i had them done at a driveline shopand normally i'd have full confidence but the thing that makes me wonder is the fact that jwhen i did my passenger side axle shaft swap (to a single piece shaft) the carrier came out extremely easily once i had the bearing caps off. Like it almost fell out on it's own, no prying or anything required. in your opinion is that ok or a bad sign?
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Old 10-30-2016, 05:52 PM
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question for you then- how can I tell if my gears were set up properly?
i had them done at a driveline shopand normally i'd have full confidence but the thing that makes me wonder is the fact that jwhen i did my passenger side axle shaft swap (to a single piece shaft) the carrier came out extremely easily once i had the bearing caps off. Like it almost fell out on it's own, no prying or anything required. in your opinion is that ok or a bad sign?
If you just took the bearing caps off and it fell out, I wouldn't like that myself... If you still had to pull it out, it should be fine, if it runs quietly and is wearing evenly you should be good. If it is very loose there are a few things that can cause that: Could be they installed the carrier in too tight and the bearings are wearing quickly. Could be the case stretched a bit, or they didn't shim right on the non ring gear side of the carrier. How did the wear look when you did take it a part and do the gears whine at say about 45-70mph?

Here's a picture of a lunchbox locker I helped with this past weekend that had a pretty good wear when we took it apart.
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Build Thread 1989 YJ, Chevy 355 TBI, 700r4, np231 sye/wide chain/6 pinion planetary, D30/8.8/4.56, 33" A/T's, bds 3.5" springs, 1" Boom Shackles, crossover heim steering
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Old 05-21-2017, 10:02 PM   #8
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Originally Posted by c5wagner View Post
I've seen a few manufacturer’s now offer 5.13 gears for High pinion YJ/XJ Dana 30's now and am currious if anyone is actually running them? I kind of want to only because I'm good at gear install and want to test the "strength" myself. I have low expectations but when I finish my engine swap, I may install them just to satisfy my curiosity.
c5wagner, did you ever get around to trying these D30HP 5.13 gears? I swapped in a Rubi 44 and a 30HP this past winter along with a large amount of other work and $$$ in parts. I'm running 33's for now so to save my self a buck I got my brother to regear the D30 with a set of Motive 4.10's to match the already geared D44 and they're wearing in nicely. The 4.0 5-speed with 4.1 gears and 33's is fine for now but I'd like to go up to 35's this coming winter once I get some new braking power up front. I know 4.88 is usually recommended for 35's but I'd rather err on the side of bottom end. For me to go through the effort of setting them up, I figure a little deeper gear wouldn't hurt if the 5.13's are holding up well.
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Old 05-21-2017, 11:45 PM
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c5wagner, did you ever get around to trying these D30HP 5.13 gears? I swapped in a Rubi 44 and a 30HP this past winter along with a large amount of other work and $$$ in parts. I'm running 33's for now so to save my self a buck I got my brother to regear the D30 with a set of Motive 4.10's to match the already geared D44 and they're wearing in nicely. The 4.0 5-speed with 4.1 gears and 33's is fine for now but I'd like to go up to 35's this coming winter once I get some new braking power up front. I know 4.88 is usually recommended for 35's but I'd rather err on the side of bottom end. For me to go through the effort of setting them up, I figure a little deeper gear wouldn't hurt if the 5.13's are holding up well.
Not on mine but I've set up more than a few for others that work nicely. I've installed 6 sets total and all without problem with 2 sets even going through Moab Easter safari and working flawlessly with the weaker low pinion TJ housings and one on an unlimited. Both the 4.88 & 5.13 dana 30 gear sets have 8 pinion teeth that are the same size so I can't see one being any stronger than the other. The only weakness I see is more stress on the axle shafts so that's a consideration you may want to address.
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Build Thread 1989 YJ, Chevy 355 TBI, 700r4, np231 sye/wide chain/6 pinion planetary, D30/8.8/4.56, 33" A/T's, bds 3.5" springs, 1" Boom Shackles, crossover heim steering
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Old 05-22-2017, 01:02 AM   #10
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Not on mine but I've set up more than a few for others that work nicely. I've installed 6 sets total and all without problem with 2 sets even going through Moab Easter safari and working flawlessly with the weaker low pinion TJ housings and one on an unlimited. Both the 4.88 & 5.13 dana 30 gear sets have 8 pinion teeth that are the same size so I can't see one being any stronger than the other. The only weakness I see is more stress on the axle shafts so that's a consideration you may want to address.
It's good to hear first hand experience/knowledge. Chromoly axle shafts are on my short list before the gearing change along with the brake upgrade. I'm currently running the stock shafts front and back. They've been holding up fine for now, I've got spare stock stuff in case though.
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Old 05-24-2017, 11:06 PM   #11
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4.88 on 35s with a 4 banger isn't bad but I'd like a granny for a slower crawl and better hill starts. 4Low 1st gear wasn't enough for me when I was stuck on some rocks. I had to mash the brake, let the clutch out until it started to stall, hit the gas with my heel, and slowly let off the brake. I'd rather be able to let out the clutch and have it move without giving it gas.

Maybe I'm just used to the Powerstroke... Without a trailer, you can start it in 2nd gear without the gas (err... accelerator pedal). Then it still has 1st gear and stupid low.

What engine are you running? I feel like 4.88s are perfect for my tire/engine combo on the street but I need more ass. And yes, I did go 40 MPH on the street in my Super Swampers to get gas.
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Old 05-25-2017, 01:35 AM
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4.88 on 35s with a 4 banger isn't bad but I'd like a granny for a slower crawl and better hill starts. 4Low 1st gear wasn't enough for me when I was stuck on some rocks. I had to mash the brake, let the clutch out until it started to stall, hit the gas with my heel, and slowly let off the brake. I'd rather be able to let out the clutch and have it move without giving it gas.

Maybe I'm just used to the Powerstroke... Without a trailer, you can start it in 2nd gear without the gas (err... accelerator pedal). Then it still has 1st gear and stupid low.

What engine are you running? I feel like 4.88s are perfect for my tire/engine combo on the street but I need more ass. And yes, I did go 40 MPH on the street in my Super Swampers to get gas.
The difference between 4.88 & 5.13 isn't extremely noticeable and won't make it feel granny low. If you're starting from scratch the 5.13 would probably be better but if you have 4.88 I wouldn't say the switch is worth it. Looking to go more towards the crawler route consider getting a much lower geared transfer case like 5:1 low instead of your stock 2.72:1 low or switch to an automatic transmission. A doubler transfer case is a great choice just not on wranglers which is very unfortunate because the short wheelbase. Doublers are the reason why so many 4 banger Toyotas do so good on trails...

Wheeling with an automatic on rocks is far more enjoyable than with a manual. I'm good at both but always have more fun with an automatic. The torque converter makes things much easier and doing what you said to get out of the rocks is a good way to wear out a clutch especially doing so often.
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Build Thread 1989 YJ, Chevy 355 TBI, 700r4, np231 sye/wide chain/6 pinion planetary, D30/8.8/4.56, 33" A/T's, bds 3.5" springs, 1" Boom Shackles, crossover heim steering
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Old 05-25-2017, 09:34 AM   #13
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I much prefer the manual for more control. I've thought of the transfer case but my rear driveshaft measured 19 7/8"... I can't imagine how short it would be if I added more crap on there...

One guy in our club is getting everyone hooked on Toyota. He's got a 6 cylinder I think... But he's got stock drive train and runs 38s. He's got the transfer case with stupid low.
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Build thread for OJ, my YJ. 1993 Wrangler S 2.5L/AX-5/NP231 with SYE, Spartan locked Dana 30/Aussie locked Ford 8.8 @ 4.88, SOA lift with 2.5" OME HD springs and front Bilstein/rear Rancho shocks, Barricade 9500 winch, custom front and rear bumpers, 136 amp alternator, 35" Super Swamper LTBs.
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Old 05-25-2017, 08:38 PM
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I much prefer the manual for more control. I've thought of the transfer case but my rear driveshaft measured 19 7/8"... I can't imagine how short it would be if I added more crap on there...

One guy in our club is getting everyone hooked on Toyota. He's got a 6 cylinder I think... But he's got stock drive train and runs 38s. He's got the transfer case with stupid low.
I had a np231-231 doubler in my old 4 banger xj with a manual and it was a blast. I had low range for driving around on dirt and super low range for the rocks. Just wish I could've had that with a wrangler. I considered an atlas with 5:1 low but figured it would suck with only one super low range option for sand so I'm going the automatic route with my v8 swap. Just burned out with working on my jeep at the moment with a kid on the way and the lady not giving me any leeway...
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Build Thread 1989 YJ, Chevy 355 TBI, 700r4, np231 sye/wide chain/6 pinion planetary, D30/8.8/4.56, 33" A/T's, bds 3.5" springs, 1" Boom Shackles, crossover heim steering
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