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Unread 04-15-2010, 08:55 PM   #1
squibload
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1990 YJ Wrangler 
 
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Swapping D-30 from newer YJ - problems to watch out for?

Hey all- I'm regearing my '90 by swapping out my 3.07 geared D30 and D35.

I got a pretty good deal on a D30 and D35, geared 4.10, from a '95 2.5L...picking them up on Saturday.


As far as I can tell, the D35 in the rear should be a cinch.

Here are the Q's:
1. I noticed that the tie rod ends from 91-95 are shown as different part numbers than those for earlier YJ's like mine. Will this cause me any fitment issues to the D30 steering knuckle? (I'm planning on keeping my current tie rod.) I assume that the studs are the same, but perhaps the threads (to the tie rod) are different?

2.Re. the D30 CAD: Did all YJ's use the same CAD? If they are the same, and the new axle's CAD doesn't work, could I swap in my current, fully operational CAD? If it doesn't work, I could always Posi-Lock it...but I'd rather not drop more $$$ if I can get away with it.

Thanks for the info, gang!

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Unread 04-15-2010, 09:35 PM   #2
Provojeep
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I'll take a shot at your questions since I did the same swap a couple of years ago.

The D35 should be an easy straight swap unless there are anti-lock brakes, which I am not sure were offered on the YJ. My D30 was an easy swap also. I used the the tie rod and drag link from the new axle since they came with the axle. I don't think there is any size difference in the TRE between the years. I have seen at least two different styles of CAD on the YJ but they are interchangable. You should not have any problems there.

Good luck to you. With luck someone will correct me if I have made any errors. My swap was easy and well worth it.
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Unread 04-15-2010, 10:01 PM   #3
K4KAS
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All will swap right over. Axle for axle. Even if it did have ABS, you would just not hook up the sensors. IIRC it was only the rear that had ABS anyway. And there werent many that had it.
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Unread 04-15-2010, 10:49 PM   #4
ritjobbie
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What year did the 4WD indicator light switch move from the vacuum thing on the firewall to the electric switch on the CAD?
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Unread 04-17-2010, 06:19 PM   #5
squibload
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Quote:
Originally Posted by ritjobbie View Post
What year did the 4WD indicator light switch move from the vacuum thing on the firewall to the electric switch on the CAD?
Not sure, but the CAD on the '95 axles uses a different CAD with just two vacuum ports.

At first glance, I'd guess that I will want to swap over my current, three-ported CAD to the new axles.

Or, should I just bit the bullet and go with the Posi-lock, in case the CAD swap doesn't work?

Thanks for the advice, all...I'll take pics along the way to (maybe) help out someone else who's going through the same process.
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Unread 04-17-2010, 06:28 PM   #6
Burnerman
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Just swap your vacuum disco in. 4 bolts.
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Unread 04-17-2010, 08:55 PM   #7
squibload
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Burnerman, I'm originally from Warwick, NY...a cross-border shout out to ya...

I'm going to give the CAD swap a whirl....TJ shafts just isn't in the cards for me, and I may as well try the swap betore dropping $ on a Posi, homebrewed or otherwise...
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