HP Dana 30 - Chromoly Axle Shafts, Locker, & 35's - Jeep Wrangler Forum
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Old 03-30-2012, 11:02 AM   #1
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OK, let's face it, everyone that doesn't have one would like to upgrade their front axle to a Dana 44 or a Dana 60 or similar, but a lot of us just can't easy afford a swap like that, plus all the fabrication involved.

My question is: Have any of you run a High Pinion Dana 30 with solid Chromoly shafts (eliminating the axle disconnect module as well) with a locker & 35" or even 37" tires? If so, have you had any issues?

I'm looking at doing this to mine, going to swap in an 8.8 rear, but options are limited for the front without doing a lot of fabrication.

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Old 03-30-2012, 12:01 PM   #2
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All YJs came with the HPD30. And the front D44 really isn't much (if at all) stronger than the D30, especially the HPD30. There are plenty of people on here that run 35s on stock D30s, myself included, that have no problems.

Sure you can upgrade shafts and joints, and truss your tubes and Cs, and run 37s or 38s maybe, but if all you're looking to do is run 35s the stock axle is just fine.

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Old 03-30-2012, 12:27 PM   #3
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Thanks Mitch, I ran BFG M/T 35's on mine for a while, but never got a chance to wheel with them much so I wasn't sure how they would hold up to some moderate trails. I still have them in the garage & will get some rims for them so all I have to do is bolt them on when I go wheeling. I put BFG A/T 33's on it for driving around town so I wouldn't wear my mud grips out on the pavement during everyday driving.

I do plan to put the chromoly shafts in it since I will be adding a locker though.
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Old 03-31-2012, 10:39 AM   #4
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Anyone else running this setup?
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Old 03-31-2012, 07:02 PM   #5
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I'm running this setup now with 36' swamper TSL's. I also am running 4.88 gears with a truetrac. I've had no problems and ran it hard. I was going to go with a wagi 44 but decided this setup and have been very happy.
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Old 03-31-2012, 07:12 PM   #6
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Nice thread toolman. I already have an 8.8 in my TJ, but I've been looking down the road at the possibility of running larger tires. If I run 35s on my low pinion 30 I'll
probably install RCV shafts in it. Then I don't have to sweat breaking a shaft.
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Old 04-02-2012, 12:17 PM   #7
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I do plan to put the chromoly shafts in it since I will be adding a locker though.
If you want that little bit of added insurance go ahead with the chromoly shafts, but just so you know I run a LockRight in the D30 and have had no problems with the axle shafts.
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Old 04-02-2012, 12:58 PM   #8
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Quote:
Originally Posted by Ageless Stranger
Nice thread toolman. I already have an 8.8 in my TJ, but I've been looking down the road at the possibility of running larger tires. If I run 35s on my low pinion 30 I'll
probably install RCV shafts in it. Then I don't have to sweat breaking a shaft.
Thanks, you see tons of threads everywhere that have everyone telling people to switch in some radical front differential like a lot of these ppl. have the money to spend on a $2,000 to $5,000 axle swap by the time all the extra parts they will need are bought. I thought this thread would be good for those that don't have the funds or ability to do a swap like that due to a lot of variables given as to where they live, type of income, & availability of services that do such custom work.

I know the D30 isn't the stoutest of front axle, but at the same time, it's stout enough for a lot of mild to moderate trails when beefed up correctly.

Quote:
Originally Posted by Mitchness
If you want that little bit of added insurance go ahead with the chromoly shafts, but just so you know I run a LockRight in the D30 and have had no problems with the axle shafts.
Thanks again Mitch, I'm going to go with the chromoly shafts just for that warm cozy feeling when I'm out of the more moderate trails
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Old 04-02-2012, 06:18 PM   #9
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I keep catching flak for my d30 with people telling me to upgrade to a d44.

My U joints are already same as a d44. I think with chromos i would be ahead of the game. But then you have to worry about blowing up the carrier with those tiny gears.

Im in this same boat but looking towards 37s. Im easy on the gas, but i wheel pretty hard stuff so i dont think the d30 is gonna cut it.
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Old 04-02-2012, 07:35 PM   #10
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Quote:
Originally Posted by Norcal_Chris
I keep catching flak for my d30 with people telling me to upgrade to a d44.

My U joints are already same as a d44. I think with chromos i would be ahead of the game. But then you have to worry about blowing up the carrier with those tiny gears.

Im in this same boat but looking towards 37s. Im easy on the gas, but i wheel pretty hard stuff so i dont think the d30 is gonna cut it.
I hear ya there Chris, & can't blame ya for going ahead with the swap, like I said above, it just depends on how everyone wheels, the terrain they wheel on, & how well off they are as far as $$$. Unless you run across a great deal somewhere where the a axle is already setup they way you need it, it can get very pricey, very quickly. Thanks for your input
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Old 04-03-2012, 01:00 PM   #11
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I run 36" tsl with my 4.10's dana 35 and dana 30 for years, rear had a lockright in it until the rearend blew up on me while driving down the highway. Dana 30 had a lockright and the only thing that ever broke was the yoke for the axle u-joint. It just shattered when I beat on it in a bind. I wheel my jeep pretty hard to. I just picked up a dana 44 out of a xj with 4.88"s and a locker in it. The guy had a dana 30 with 4.88's also with a lockright and chrome molly shafts. Since he was still using a stock style carrier his carrier blew to pieces while he was crawling running 36" swampers. If you are going to run with a 4.88 the carrier is smaller and does not have much meat to it. I would swap in a full locker or e locker. In a couple of months I am going to purchase a d44 from G2 with electric locker and 4.88's with chromos for $2800 delivered.
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Old 04-03-2012, 09:15 PM   #12
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I ran moly (27 spline) d hp 30 with no worries and 34x10.50x15 Ltbs
This was with lockers fore and aft and 4.88 gears
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Old 04-03-2012, 09:22 PM   #13
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When I go to 38.5" boggers and locked fore and zft I will be using a hp44/d ff60 combo (8 lug) with 5.38 and 30 spline front and back.
I rather doubt I will need moly but might get moly shafts anywaya! Lol
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Old 11-29-2012, 03:44 PM   #14
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Quote:
Originally Posted by The Toolman View Post
Anyone else running this setup?
You're running the exact setup I am.

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Old 11-29-2012, 05:21 PM   #15
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Quote:
Originally Posted by Ageless Stranger
Nice thread toolman. I already have an 8.8 in my TJ, but I've been looking down the road at the possibility of running larger tires. If I run 35s on my low pinion 30 I'll
probably install RCV shafts in it. Then I don't have to sweat breaking a shaft.
The lp 30 is inherently weaker than the ho 30 due to how the gears mesh. The hp 30 uses reverse cut gear which pull the ring and pinion together when power is applied. When you put power to the lp it is trying to force the r&p apart. A shaft is not your worry on a lp 30 with bigger tires. Not saying it will break just fyi. Hell i have a locked d35 with 32" tires that according to everyone here should have broken by now.
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Old 11-29-2012, 06:02 PM   #16
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What is the difference with these 2 set ups? lp30/hp30.Low pinnion/high pinnion.I have an 89YJ Im getting ready to change the fluids in both of mine.Im a newbee at all this and Im doing the change so I know what comes out off it when I open them up.Do you know why there are 2 different set ups on the same diff?Is the d35 the same way?
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Old 11-30-2012, 11:17 AM   #17
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What is the difference with these 2 set ups? lp30/hp30.Low pinnion/high pinnion.I have an 89YJ Im getting ready to change the fluids in both of mine.Im a newbee at all this and Im doing the change so I know what comes out off it when I open them up.Do you know why there are 2 different set ups on the same diff?Is the d35 the same way?
Not really sure why they made a low pinion 30 vs a high pinion 30. The d 35 is just one style.

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