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Unread 12-18-2013, 06:58 PM   #1
dewey6482
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1993 YJ Wrangler 
 
Join Date: Jul 2009
Location: Lodi. CA
Posts: 45
looking to upgrade my D30 front axle

Hello all,

So i am on here again looking for suggestion on my next upgrade, Replacing the stock front D30 on my YJ.

A little update on the old YJ, crawler

- 93 YJ, 4.0 with a 5 spd manula trans
- 35 inch MTR on 15 inch wheels.
- Tera Low transfere case upgrade
- SLE with CV rear drive line
- Rear dif is a Ford 8.8 rear dif , open with 4.56 gear
- front dif is a D30 with Lockrite locker, 4.56 gears, stock axle shafts.
- SOA set up with 1.5 inch springs
- Home made Cross over / High steer system.
- I drive my Jeep to and from the tral, when off road I run the rocks mostly how ever I do run a little snow from time to time.



I am looking for pros / cons on front axle upgrades such as

- D44, G2
- D44. 78-79 F150
- ??????????


I am also looking to stay with normal YJ width axle as well as 5 lug x 15 inch wheels


any suggestion would be greatly appriciated.

thanks Robert

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Unread 12-18-2013, 07:23 PM   #2
TSEJEEPERS
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Are you planning on staying with 35 inch tires?
Personally I would upgrade your front axle shafts. Either Chrom moly or TJ shafts for the larger U joint, and put a rear locker in.
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93 YJ SOA 2" springs front, XJ springs rear w/main leaf added, High pinon 9 inch rear detroit locker front Dana 44 ARB 4.56 Gears, 36 inch Irok tires too much to list. www.mijc.org
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Unread 12-18-2013, 07:37 PM   #3
Joe Dillard
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1991 YJ Wrangler 
 
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We just got through installing a Currie RockJock front D44 in my friends wifes TJ. This HPD44 is very beefy. He had it built with 5.38 JK gears, locker, etc.

I've been wanting to post pics of it, but I'm waiting to see if his wife updates her build thread first (wouldn't want to steal her thunder ).

Just letting you know of another option out there.
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Unread 12-18-2013, 07:44 PM   #4
dewey6482
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Great question, eventually I will go to a 37 or possibly 38 inch tire . For now I am planing on keeping the 35 as I recently purchased the 35s .


I have considered the d30 cromoly ( not sure on spelling )axle shaft upgrade. How ever my long term goal is to 3 or 4 link the front with mostl likely King Coil Overs and that would most likely meen , a truss with some expensive brakets including the 37 or inch tires .

This all being said I think it's best to look at a stronger type dif that would also give me greater gear selection options .


Regarding rear locker , I plan to install a Detroit in the 8.8
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Unread 12-18-2013, 08:04 PM   #5
djwrangler
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I'd skip the 44 and go right to a 60 given your plans.
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Unread 12-18-2013, 08:06 PM   #6
jsawduste
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Quote:
Originally Posted by Joe Dillard View Post
We just got through installing a Currie RockJock front D44 in my friends wifes TJ. This HPD44 is very beefy. He had it built with 5.38 JK gears, locker, etc.

I've been wanting to post pics of it, but I'm waiting to see if his wife updates her build thread first (wouldn't want to steal her thunder ).

Just letting you know of another option out there.
Kat has a new Tiger under the hood ?
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Unread 12-18-2013, 08:27 PM   #7
dewey6482
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My buddy says the same thing , go to the KP D60, I just don't won't to go full width and wanted to stick with the wheels and tires I have for now .
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Unread 12-18-2013, 09:16 PM   #8
Joe Dillard
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Quote:
Originally Posted by jsawduste View Post
Kat has a new Tiger under the hood ?
Yep. There could be another Tiger brewing too.
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Unread 12-18-2013, 10:41 PM   #9
c5wagner
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My 44 was out of an 03 rubicon. My axle was also built by the PO of the axle with a super 44 kit and arb air locker. I love the thing because it has given me no problems. I got it from the guy because he was going with rock jock dana 60s and sold me the 44 for $250 even though there was at least $1500-2000 in it
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Unread 12-19-2013, 12:12 AM   #10
Norcal_chris
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37s and a d60 is a waste. If your gonna go d60 jump to 40s.

No reason a d44 cannot reliably run 37s. I've managed to break everything around my axle.... Driveshafts , transfer case, etc.

A narrowed hp d44 would be a great choice
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Unread 12-19-2013, 12:45 PM   #11
flipit
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with an 8.8 in the rear I second the D44 vote.
D60 and an 8.8 sounds like a funny combo to me.

D44 can handle 37s, and has better clearance than the 60 would in that scenario.

as for a donor, I got my 44 out of a Bronco, very similar to the F-150-
I want to say 61" WMS? pretty sure....

but watch your lug pattern, bronco is 5 on 5.5, where your 8.8 is still 5 on 4.5 like the YJ right?
I put 15 inch rims on mine still though...

but yeah, any D44 would work, I'd go HP if you can, but that should be a no brainer,
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Unread 12-19-2013, 12:52 PM   #12
Climbit
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a d44 *can* live on 37s.... but be aware the Ujoints aren't any bigger than that of a d30. they are the weak point and always will be.
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Unread 01-15-2014, 12:41 PM   #13
dewey6482
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Thanks all for ur comments and suggestions.

I did find and purchase a D44 out of a 1977 f150

After inspection it appears the dif that I purchased is 65 3/4 in wide , not exactly what I wanted but it will work .

So now on to the build

- narrow axle by cut PS down by 5 1/2 inches
- correct pinion and caster angle .7 caster and up 8 degrees pinion angle
- up grade axles shaft and u-joint , strongest I can find with the larger u-joint ( toms bronco PN 3459 and CTM joints.
- truss for d44
- Cross over/high steer. This is where iam struggling . The steering knuckles that came with my d44 originally from a 1977 f150 r not flat top also do not have provisions for machining and eventually adding the typicial 3 bolt brakets . So I was thinking what options r available

> Reid racing D44 knuckle D44001FR
> D44 f250 Knuckles for flat top and high steer
But can I bolt my wheel spindle to a d44 flat top f250 knuckle .
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