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  • March 28, 2024, 12:01:28 PM

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Author Topic: D30 questions  (Read 12614 times)

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Offline Nightpath

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Re: D30 questions
« Reply #15 on: September 15, 2014, 06:44:24 AM »
I was thinking the differential not axle....doh

What piece is it I need? Any pics?

Offline captspillane

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Re: D30 questions
« Reply #16 on: September 15, 2014, 06:47:16 AM »
He's talking about the chunk of metal a few inches from the flange on the passenger side. The passenger side engine mount sticks down with two flaps that go on either side of that chunk. A bolt goes through both flaps and through the center of the hole, horizontal to the ground and from front to rear.

That quote of mine from a few days ago should help.

The picture you just took is of the main casting. That hangs on the Driver Side and they are all identical. The only potential difference is below your Passenger side engine mount. The passenger side engine mount gets swapped if you go from the early nondisconnect ('80 and '81 only) with the short hole to a newer axle. It doesn't matter if the newer axle is disconnect ('82-'86) or nondisconnect ('87-'88).
« Last Edit: September 15, 2014, 06:49:53 AM by captspillane »
Currently Inspected and Insured as of Jan 2013:
-1985 Eagle Station Wagon 258 T5 Stickshift
-1980 Eagle Station Wagon 258 Auto Fuel-injected with GM TBI

Minor Repairs Underway:
-1982 Eagle SX4 258 T5
-1981 Kammback 2.5L Iron Duke T5

Restoration Efforts Near Completion:
-1982 SX4- 401 NV3550
-1983 SX4- 4.5 MPI NSG370 (6 Speed)

Restoration Efforts Underway:
-1985 SW- 4.0 MPI AX15
-1982 SX4- 4.0 AW4
-1981 SX4- SD33T NV4500 (Turbodiesel 5 speed)

Future Rescue Efforts- '85 Maroon SW, '87 Limited SW, '84 Limited SW, '87 4 door Sedan, '81 2 door Sedan, '88 White SW, '77 4 door Hornet, '74 2 door Hornet, '79 Spirit AMX, '81 Kammback.

RIP- Red '81 SX4, '84 4dr Sedan, '84 SW, '81 SW, '80 Spirit, '83 SW, '83 4dr Sedan

Offline Nightpath

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Re: D30 questions
« Reply #17 on: September 15, 2014, 07:02:28 AM »
Ahhh crap I see now...Going to have to see if I can find one.

If not I'm pure SoL unless someone has one to get rid of.

Offline carnuck

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Re: D30 questions
« Reply #18 on: September 15, 2014, 12:56:18 PM »
Which are you putting in? The larger or smaller diameter housing?
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

Offline Nightpath

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Re: D30 questions
« Reply #19 on: September 15, 2014, 01:37:16 PM »
I'm putting the axle from the 81 into my 86.

I see that the axle I have in the pic has a shorter hanger block than the one installed on my Eagle. I'm heading over to the graveyard tonight to see if there are any that will work.

Offline captspillane

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Re: D30 questions
« Reply #20 on: September 15, 2014, 02:43:02 PM »
All you need to do is swap engine mounts along with the axle. The engine mounts are otherwise identical and there isn't anything else keeping you from putting an older axle into a newer Eagle.
Currently Inspected and Insured as of Jan 2013:
-1985 Eagle Station Wagon 258 T5 Stickshift
-1980 Eagle Station Wagon 258 Auto Fuel-injected with GM TBI

Minor Repairs Underway:
-1982 Eagle SX4 258 T5
-1981 Kammback 2.5L Iron Duke T5

Restoration Efforts Near Completion:
-1982 SX4- 401 NV3550
-1983 SX4- 4.5 MPI NSG370 (6 Speed)

Restoration Efforts Underway:
-1985 SW- 4.0 MPI AX15
-1982 SX4- 4.0 AW4
-1981 SX4- SD33T NV4500 (Turbodiesel 5 speed)

Future Rescue Efforts- '85 Maroon SW, '87 Limited SW, '84 Limited SW, '87 4 door Sedan, '81 2 door Sedan, '88 White SW, '77 4 door Hornet, '74 2 door Hornet, '79 Spirit AMX, '81 Kammback.

RIP- Red '81 SX4, '84 4dr Sedan, '84 SW, '81 SW, '80 Spirit, '83 SW, '83 4dr Sedan

Offline Nightpath

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Re: D30 questions
« Reply #21 on: September 15, 2014, 04:51:11 PM »
I'm putting an XJ engine into it.

I found a nice passenger side hanger from an 81. Was able to pull it with minimal issues so I should be good to go.

Offline Nightpath

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Re: D30 questions
« Reply #22 on: November 01, 2015, 09:22:21 AM »
Posting an update to this.

I have the axle from the 81 SX4, a non disconnect with 3.54 inside. The differential pinion is shot (boo). My current Eagle is an 86 with 2.7x inside the non-disconnect axle, which doesn't match the 8.25 gearing that I installed in the rear so I have to re-gear the front to 3.55.

Now, I do have the guts from the Dana 30 that was on the XJ. Will these fit in either of the pumpkins? The differentials look identical when I put them beside eachother iirc, so I'm hoping all I have to do is buy a new pinion and some seals and put it back together with the XJ guts inside my current Eagle diff.

Has anyone done this?

Offline carnuck

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Re: D30 questions
« Reply #23 on: November 01, 2015, 11:58:41 AM »
XJ's (except the last couple years of production in the 2000's), MJ's used high pinion. Eagles, ZJ's, YJ's and later TJ's used low pinion D30 fronts. (not sure on the pinion length though as there were 2 different low pinion ones)

3.54 is the most common ratio for ZJ automatics but some are 3.08 (rare 5 speeds) and some are 3.73 (Heavy Duty tow or sport package)
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

Offline eaglefreek

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Re: D30 questions
« Reply #24 on: November 01, 2015, 03:56:58 PM »
You would need a low, long pinion set.
1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear.
1981 AMC Eagle Wagon As Seen On TV  Lost In Transmission


 

"I know he'd be a poorer man, if he never saw an eagle fly,
Rocky mountain high"  John Denver
Click for Fayetteville,TN Forecast" border="0" height="100" width="150

Offline Nightpath

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Re: D30 questions
« Reply #25 on: November 02, 2015, 10:10:22 AM »
OK, here's what I have. Since I'm a simpleton today (a lot going on), let me know what I need.

Rear is a 8.25 with 3.55 gearing. Running it with a AW4 transmission with has identical ratios as the stock Eagle transmission, except Overdrive, which is 0.75.

SX/4 (1981) non-disconnect front axle with 3.54 (pinion wobbles bad, probably needs all new seals). Also has the longer hangar which I have
Eagle Wagon (1986) non-disconnect front axle with 2.73 - excellent front differential but doesn't match the rear. Uses the shorter hangar which I have
XJ (1994) front axle guts with 3.55 and the ring + pinion


OK, with this in hand what combo of gears and parts would you use? What is needed?

Offline carnuck

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Re: D30 questions
« Reply #26 on: November 02, 2015, 02:30:15 PM »
If you have a Renix years AW4, it's 21 spline and .70 O/D. HO got the .75 O/D and 23 spline output.

I'm not sure which D30s got the long, low pinion.
« Last Edit: November 02, 2015, 02:31:17 PM by carnuck »
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

Offline Nightpath

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Re: D30 questions
« Reply #27 on: November 02, 2015, 06:10:36 PM »
It's a 1994 OBD1 drivetrain, HO all the way ahhhhhhh yeah

Offline eaglefreek

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Re: D30 questions
« Reply #28 on: November 03, 2015, 12:10:42 AM »
Found this on the net. Eagle should have been included in this list.
 
std cut dana 30 Pinion length 8 9/16":
Aviator: 2003 - 2005 (Front)
Bronco: 1966 - 1971 (Front)
Jeep C101 67-74 (Most 86 and older D30's)
CJ5: 1971 - 1983 (Front)
CJ6: 1971 - 1983 (Front)
CJ7: 1976 - 1986 (Front)
CJ8: 1981 - 1986 (Front)
Comanche: 1986 - 1992 (Front)
Commando: 1972 - 1973 (Front)
Liberty: 2002 - 2005 (Front)
Scout II: 1972 - 1980 (Front)
Wagoneer: 1971 - 1973 (Front)
ZJ (Grand Cherokee): 1992 1/2 - 1996 (Front)
1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear.
1981 AMC Eagle Wagon As Seen On TV  Lost In Transmission


 

"I know he'd be a poorer man, if he never saw an eagle fly,
Rocky mountain high"  John Denver
Click for Fayetteville,TN Forecast" border="0" height="100" width="150

Offline carnuck

  • Having a 727 means never re-doing the trans again
  • AMC Eagles Den Addicted
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  • Near Seattle
    • Virtual Jeep
Re: D30 questions
« Reply #29 on: November 05, 2015, 01:14:30 AM »
Found this on the net. Eagle should have been included in this list.
 
std cut dana 30 Pinion length 8 9/16":
Aviator: 2003 - 2005 (Front)
Bronco: 1966 - 1971 (Front)
Jeep C101 67-74 (Most 86 and older D30's)
CJ5: 1971 - 1983 (Front)
CJ6: 1971 - 1983 (Front)
CJ7: 1976 - 1986 (Front)
CJ8: 1981 - 1986 (Front)
Comanche: 1986 - 1992 (Front)
Commando: 1972 - 1973 (Front)
Liberty: 2002 - 2005 (Front)
Scout II: 1972 - 1980 (Front)
Wagoneer: 1971 - 1973 (Front)
ZJ (Grand Cherokee): 1992 1/2 - 1996 (Front)

Comanche is high pinion D30 front if stock 4x4 because it's the same as an XJ Cherokee '84+
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

 

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