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Engo LED Flush Mount Lights *PAIR* Flood or Spot 1,600 LumYukon Ultimate 35 axle kit for c/clip axles with Yukon ZipRockridge 4WD IS Taking Zone Offroad Suspension Lift Kits

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Unread 03-06-2007, 12:39 AM   #1
doug_1994
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231/300 Combo

I never really wrote a full on writeup for my install. With the PM's Ive been getting, I figure I could put something together from the pics that I have. So here goes.

Getting the "kit". This is what I purchased from DD Machine (from here:http://www.pirate4x4.com/forum/showthread.php?t=451754)


Front plate (with Dana 300 clocking plate)

001.jpg

4340 shaft, 23 spline

003.jpg


Here is the NP231 that I had to buy (T18 and Dana 20 were in my YJ). Take the case apart. The back half can be pitched or sold. Then cut off the front lobe. I used a sawz-all. Used the "block off plate" as a guide (it comes in the kit).

Front.

011.jpg

Back.

Note: The shifting fork and collar are not needed, and a new shift rail is included.

010.jpg

Test fitting the front plate. to the NP231

roxbox1.jpg

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Unread 03-06-2007, 12:50 AM   #2
doug_1994
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Block off plate ground down to fit.

blockoffplate1.jpg

All tigged in. I had a local propeller shop do it.

tiggedup1.jpg

Here is the NP435 I used. It was from a '79 ford.

009.jpg

Novak adapter. http://www.novak-adapt.com/catalog/kit_431.htm

004.jpg

New main shaft.

005.jpg
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Unread 03-06-2007, 12:54 AM   #3
doug_1994
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Tranny put together.

tranny1.jpg


tranny2.jpg

New length just under 14"

tranny3.jpg

Mock-up together.

together1.jpg

Total length, just under 22"

lenth1.jpg
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Last edited by doug_1994; 03-06-2007 at 01:36 PM..
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Unread 03-06-2007, 01:00 AM   #4
doug_1994
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The Dana 300

007.jpg

008.jpg

The clocking ring now installed.

clockingring1.jpg

Removal of the old T18 and Dana 20

removal2.jpg

removal3.jpg
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Unread 03-06-2007, 01:08 AM   #5
doug_1994
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removal4.jpg

The old T18/Dana 20. Great tranny, but it was the 4:1 first.

removal5.jpg

Bellhousing from Advanced Adapter's. There are two more "adapter plates" still on the bellhousing. It was to "eat up" the long input shaft of the T18. A bellhousing from a T150 or T176 are the same as what I have. I did not know this four years ago when I did the T18 swap. It is typically known as the "butterfly" mount.

removal6.jpg

New conversion pilot bushing from Novak's.http://www.novak-adapt.com/catalog/p...htm#amcengines

pilot-bushing.jpg

New clutch from Napa. (not sure of the part#) If I recall correctly it is a 10 spline, 10" disk.

clutch-disk.jpg
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Last edited by doug_1994; 03-06-2007 at 01:37 AM..
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Unread 03-06-2007, 01:19 AM   #6
doug_1994
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Old pressure plate from T18 install. It did have some heat marks, but I reused it anyways. I know some people will say I should of changed it, but oh well.

pressure-plate.jpg

Tranny is in. The only PITA was getting the old pilot bushing out. Once it was gone she slid home pretty easy.

000_0375.jpg

You can see my homemade slave cylinder bracket.

000_0371.jpg

Tranny mount from Auto Zone.

000_0374.jpg

All together now. I don't have pics of the skid plate install. I used the factory one, with some new holes drilled in it.
000_0373.jpg
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Last edited by doug_1994; 03-06-2007 at 01:49 PM..
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Unread 03-06-2007, 01:29 AM   #7
doug_1994
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The only gripe I had on the whole install was the lack of support for the rear of the 300, and no real direction on which way to go. The tranny mount was way far ahead, and I thought the rear should be supported. So I improvised and made my own mount, outta some old poly bushings, tube, and plate. I tied it into my fifth link mount. Not gonna win any fabbin' contests, but it works.
100_0177.jpg

100_0176.jpg

100_0178.jpg


000_0376.jpg
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Last edited by doug_1994; 03-06-2007 at 02:12 AM..
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Unread 03-06-2007, 01:52 AM   #8
doug_1994
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With it coming up on a year, I still absolutly love it. The gear choice is amazing, allthough it did take some getting used to. Once I find the right gear, it is usually dead nuts on.

My gear choices are.

NP435~ 1st 6.68, 2nd 3.34, 3rd 1.74, 4th 1.00, and reverse 8.26

NP231~ 2.72:1

Dana 300~ 2.62:1

Axles (60,14)~ 4.10

Crawl ratio~ 195:1

Figure your own out here:http://www.novak-adapt.com/knowledge/gearing.htm


The total cost of this was some what manageable. I collected the parts for some time. Most of you prolly still have a NP231 in your jeeps now. Plus the fact that I had to adapt my tranny to the 231. So you are way ahead of the game.

The wheelbase was stretched to 110" using stock XJ springs all around. Also with some massaged perches.

Hope this helps, or open some eyes to the "double" lifestyle.

Doug
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Unread 09-06-2008, 08:27 PM   #9
MAX_Xj
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i love the write up but my favorite part was the rachet straps through the floor to lower the tranny,
The reason why its so funny cause me and my friends did the same thing puttin my tranny in 6' peice of pipe, 4 pulleys, and some rope les the 20 minutes my tranny was in,
Nice write up btw
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Unread 09-06-2008, 09:53 PM   #10
doug_1994
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^^^

Damn, first reply 18 months later!



I hear ya on the home-made "tranny jack". When you do things by yourself, you gotta improvise.

Thanks.
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Unread 09-06-2008, 10:56 PM   #11
leftlanetruckin
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thanks doug!
i am about to get an xj, and considered the doubler route now i will have the wheelbase.
i can either do that, or install the atlas 4.3 i already have....
BTW, it already has a 231, and i already have a rebuilt 300......
opinions??

martin
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1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/f12/swap-offically-underway-324622/

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Unread 09-06-2008, 11:16 PM   #12
doug_1994
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^^^Your welcome Martin.


Hell, your got about all the hard parts allready.

I'd leave the Atlas in the YJ, and you may as well utilize that 300!


I guess it would all depend on your axle choice. I can't imagine stockers holding up to the deep gearing.

And, the 300 dumps to the passenger side, so that would need to be addressed. Flipped, or new front end.

Then you get into exhaust, gas tank(? maybe not in an XJ, dunno), driveshaft lengths, ect.

Whats the XJ gonna be used for?


Edit:

If the XJ is an auto (which I'm gonna guess it is) you may need to do something with the brakes also. I have a 60/14 front, and rear, with massive *** calipers, and drums. With this kind of gearing it pulls right through the brakes (1st gear,low,low). I have to push the clutch in to completly stop. But on the good side, I can about stall out, but still climb, at about 500 RPM with just riding the brakes.
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Last edited by doug_1994; 09-06-2008 at 11:26 PM.. Reason: added more info
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Unread 09-07-2008, 07:57 AM   #13
leftlanetruckin
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doug,
the yj is going mate, being traded for 2 xj's, 1 partially built. part of the deal is me keeping the atlas and dropping the 231c/j back into it.
i know all about braking problems, when i did the atlas in my junk, low range was about unstoppable. thats when i went with the dual diaphram booster.
700r4 + 4.3 atlas + 4.88's + 37's = cant stop on stock yj/8.8 brakes!!
stops fine now, finally...
and yeah, it is a 4.0 auto mate.
i can get the atlas in there for the cost of new input gear ($160), and then sell the 231 with sye. selling the old 231 will more than pay for the atlas to go in there IMO.
biggest i will go with it will be 35's. not decided on axles as of yet, but damn those jk rubi axles look like a good deal to me.
i was debating the (pretty much) new atlas vs the doubler arrangement already. will have to see what comes along i guess....
Martin
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1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/showthread.php?t=324622

Years to gain the hands on experience, and offer it freely.
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Unread 09-07-2008, 08:19 AM   #14
doug_1994
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With the stock AW4, atlas, and 3.55 gears (guess), you'd be at a 43 crawl ratio. With the 231/300 it'll bump it to a 71. Something else to chew on.
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Unread 09-07-2008, 08:24 AM   #15
leftlanetruckin
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gears would be 4.10 when the axles get done, or maybe 4.56, but i think the 4.0/aw4 with 35's will be happy with either one.
another thing to consider, it will be a semi dd for when the missus wants a change from the range rover, ok, when the kids wanna ride in the jeep then..... so looking nice n neat inside is a consideration too i guess.
decisions decisions......

martin
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1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/showthread.php?t=324622

Years to gain the hands on experience, and offer it freely.
Minutes to gain the knowledge from the internet, and quote it just as freely.
Choose wisely!
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