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Old 02-21-2014, 11:27 PM   #1
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East coast gear supply axles

I'm looking at a Dana 30 for my TJ from these guys, have everything figured out, the problem is, they have about 5 different options for axle shafts, I plan to get 4.88's and leave it open(for now). And I also want to run 35's. Know that for sure. So what would be the best shafts?

They have stock shafts, stock shafts with spicers, nitro chromoly shafts, nitro 30 spline chromoly shafts, RCV shafts and RCV 30 spline shafts. The nitro's are $500 extra, the RCV is $1000 extra. I would imagine RCV's are the best, but what would be best for my use?

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Old 02-22-2014, 06:11 AM   #2
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I would go with the stock shafts with spicers then upgrade to 27 spline chromoly when you install your front locker. You will be able to use the stock shafts as trail spares.

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Old 02-22-2014, 06:29 AM   #3
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I'd go with the stock shafts with spicers as well. I run them with 35's right now and have not had any issues.

I also believe I have read that if you ever want to do something like the Vanco big brake kit it will not work with RCVs.
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Old 02-22-2014, 09:14 AM   #4
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The Nitro shafts would be a good upgrade if you plan on going to 35. You're looking at a high pinion d30 right?
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Old 02-22-2014, 09:29 AM   #5
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And if you're thinking locker, do it now.when you add one later you'll still have to pay for a new gear set up so get it done now and actually SAVE yourself done money.
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Old 02-22-2014, 09:43 AM   #6
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LP or HP dana 30 and alloy shafts will handle 35's locked(I run a HP30 with alloys on 35's) slight edge to the HP of course.. I would not waste the money on the RCV's on a dana 30 as the warranty is only good on 35" or smaller tires(from what i recall) step up to a front dana 44 and the warranty ups to a 40" tire from what I recall. Thus if you staying under a 35" tire... just slap some alloys in and keep your stockers as back up.
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Old 02-22-2014, 10:44 AM   #7
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The problem with that is the front 44 is soooo much more expensive, I don't get it. Dana 30 starts at $350 and a 44 starts at $2100. And thank you everyone for your replies. The reason I didn't want to lock it is because I want to wait and get some ARB air lockers once I get a few more paychecks in the bank to cushion the hurting a little bit, but I guess I can have them put one in and just not hook it up seeing as I don't have the rest of the kit. And when y'all say alloys you mean chromoly shafts right? I had an instructor in tech school running 37's on his Dana 30 locked. Never had an issue. I plan on 35's, but might move up to some odd sizes to hit the sweet spot with those 4.88's. So everyone is advising against the RCV's?? That seal looks like it'd be nice down here in sandy Florida.
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Old 02-24-2014, 11:50 AM   #8
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Can anyone settle my nerves about what I should get put in this axle?
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Old 02-24-2014, 01:40 PM   #9
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a good set of chromoly axles and you'll be set.

talk to Chase at ECGS he won't steer you wrong.
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Old 02-25-2014, 12:50 PM   #10
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What about the 27 spline and 30 spline? It wouldn't hurt it if I put a locker in it now and didn't hook it up or use it would I? I planned on a nice ARB setup.
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Old 02-25-2014, 01:05 PM   #11
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RCV vs. chrome moly axles in a D30 is funny. Yes they are both only good for a 35" tire locked but...The weakness of chrome moly axles is not in the splined axle shaft but in the U-Joint. When you are in 4wd and at full turn your weak U-Joint will fail. It will also hop and jump. My yokes spit out my U-Joint on a tough obstacle. RCV axles will not fail. Are they pricey. Yes. But quality built in the US normally is.
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Old 02-25-2014, 01:09 PM   #12
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What about the 27 spline and 30 spline? It wouldn't hurt it if I put a locker in it now and didn't hook it up or use it would I? I planned on a nice ARB setup.
Go with stock spline count. I recommend this because if you are on the trail and blow an axle most parts stores and u pullit's won't have the "upgraded" splines in stock.
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Old 02-25-2014, 01:18 PM   #13
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Okay so you're saying go with RCV. Stock spline count. Can anyone tell me if I put a locker in it now and not hook it up will it bother anything? It'll be in there a while. I've still got to get the rear axle rebuilt.
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Old 02-25-2014, 01:19 PM   #14
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What about the 27 spline and 30 spline? It wouldn't hurt it if I put a locker in it now and didn't hook it up or use it would I? I planned on a nice ARB setup.
It wouldn't hurt anything but the cost of the compressor set up is pretty small compared to the the locker itself, it doesn't make much sense. Even the cheapest ARB plug and play set up is under $200, or make your own set up with a cheaper compressor.
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Old 02-25-2014, 01:27 PM   #15
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It wouldn't hurt anything but the cost of the compressor set up is pretty small compared to the the locker itself, it doesn't make much sense. Even the cheapest ARB plug and play set up is under $200, or make your own set up with a cheaper compressor.
well that's good to know. I guess I can afford it sooner than I thought.
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Old 02-26-2014, 10:19 PM   #16
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Keep your ear to the ground for ARB specials. When I bought my lockers got free compressor from them. They offered the small compressor if you bought 1 locker or the larger compressor if you bought 2 lockers. Saved myself over $250
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Old 02-27-2014, 10:11 AM   #17
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Keep your ear to the ground for ARB specials. When I bought my lockers got free compressor from them. They offered the small compressor if you bought 1 locker or the larger compressor if you bought 2 lockers. Saved myself over $250
^^^This, I thought I saw a deal like this just the other day, but I don't remember where. Call them and ask about free compressor deals.
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Old 02-27-2014, 12:25 PM   #18
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If you are going to an ARB now, I would just make the jump to the 30 spline and get some 1541 heat treated alloy shafts with spicer joints. No sense in spending the extra $$ and making the R&P the weak link. Besides, in your neck of the woods (eh hum, sand), you shouldn't have any wheelin come up that those 35s will get you into too much trouble.

ARBRD104 D30 3.73 & UP, 30 SPL, AIR LOCKER (HD UPGRADE) INCL CARRIER BRGS 899.99 shipped.
ARBCKSA12 ARB AIR LOCKER ACTIVATION SYSTEM (COMPACT COMPRESSOR) 160.08


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Old 02-27-2014, 12:43 PM   #19
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Chrome-moly axles with a locker in a D30 will put SO MUCH stress on your ring and pinion.

My suggestion, especially if you're taking this mudding or off-roading is to use upgraded steel axles shafts instead of chrome-moly like the ones Yukon sells:

Right: Yukon 1541H right hand replacement assembly for Dana 30 ('84-'90 XJ or '97 and newer TJ/Wrangler) - RRP-YAD758142X
Left: Yukon 1541H left hand replacement assembly for Dana 30 ('84-'90 XJ or '97 and newer TJ/Wrangler) - RRP-YAD758141X

Get the accompanying ring and pinion from Yukon made from the same exact material also:

High Performance Yukon Ring & Pinion Replacement Gear Set For Dana 30 Short Pinion In A 4.56 Ratio - RRP-YGD30S456TJ

And then finally, get a selectable locker if you can afford it. That way you won't put any stress on the front driveshaft while driving on dry pavement etc...:

ARB Locker: ARB Air Locker Locking Differential Dana 30, 27 Spline 3.73 & Up Gear Ratio - ARB-RD100

Don't forget to check your carriers and carrier bearings too before putting anything in there.
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Old 02-27-2014, 12:45 PM   #20
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If you are going to an ARB now, I would just make the jump to the 30 spline and get some 1541 heat treated alloy shafts with spicer joints. No sense in spending the extra $$ and making the R&P the weak link. Besides, in your neck of the woods (eh hum, sand), you shouldn't have any wheelin come up that those 35s will get you into too much trouble.

ARBRD104 D30 3.73 & UP, 30 SPL, AIR LOCKER (HD UPGRADE) INCL CARRIER BRGS 899.99 shipped.
ARBCKSA12 ARB AIR LOCKER ACTIVATION SYSTEM (COMPACT COMPRESSOR) 160.08


Have a blessed and prosperous day!

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Old 02-27-2014, 04:12 PM   #21
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Awesome. Thanks everyone. My issue, I'm wanting to order this axle from ECGS, can I get all of this through them already installed? I need a new axle anyway because mine is bent. So can I get this stuff installed from them? Honestly I used to wheel pretty hard here in Florida, but it's all trails and mud holes. If I'm doing any crawling or flexing it's through wash outs and hills and stuff. No rocks anywhere. And now that I'm spending all this money I'm probably going to be wayyyy more careful.
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Old 02-27-2014, 05:42 PM   #22
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Awesome. Thanks everyone. My issue, I'm wanting to order this axle from ECGS, can I get all of this through them already installed? I need a new axle anyway because mine is bent. So can I get this stuff installed from them? Honestly I used to wheel pretty hard here in Florida, but it's all trails and mud holes. If I'm doing any crawling or flexing it's through wash outs and hills and stuff. No rocks anywhere. And now that I'm spending all this money I'm probably going to be wayyyy more careful.
lol, I spent to money to beat the crap out of my jeep.
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Old 02-27-2014, 06:42 PM   #23
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^the

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