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Unread 08-05-2012, 05:00 PM   #1
Homebrewed2
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1989 YJ Wrangler 
 
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Ex Islander Diesel Build

Hello! This is my first thread so please be kind.
This is my first build, it might take a while. I am getting married at the end of September so my funds are limited. I bought the Jeep from a friend who drove it through college. After I bought it it sat at my dads house from 3 years since I moved 3 yours away and didnt have a garage. After buying a house I hauled it down and it sat it my garage for 2 years. I finally built a shop and have room to work on it.
The drive train was completely stock 4.2, ba10, np231. The 4.2 was using oil and down on power. I pulled the 4.2 out planing on swapping in a 4.0 with fuel injection. Once it was running I was going to pull it and make a 4.6 stroker.
I picked up a Cummins 3.3l 4 cylinder diesel at work a couple of years ago that needed rebuilt. It is rated at 65hp, 185lb-ft of torque I think. It is/was naturally asperated. From the factory the turbo charged version put out 85-105hp. I plan on putting on a turbo, intercooler and bigger injectors, it should put it around 110-120hp, 300-350 lb-ft of torque. Most guys are getting 25-30 mpgs with this set up.

My Plans

Cummins 3.3l 4 cylinder diesel
nv3550
np231
Ford 8.8 regeared to 3.55 or 3.73 havent decided
Get rid of cad, have new axle shaft
Tj flares
4" lift
33X10.50
CJ Grill-done
CJ Dash

As she sits
picture-383.jpg
4.2
picture-169.jpg
4.0 new header
picture-152.jpg
4.0 sitting in it
picture-028.jpg
Cummins 3.3
picture-163.jpg

There have been others that have done this swap before. Here are some good links
http://www.dieseltruckresource.com/d...j-t112807.html
http://www.jeepforum.com/forum/f22/l...-bean-1290765/


Last edited by Homebrewed2; 08-05-2012 at 07:28 PM.. Reason: I cant spell
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Unread 08-05-2012, 05:06 PM   #2
Homebrewed2
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I cant spell, can you go back in and edit the post?
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Unread 08-05-2012, 05:11 PM   #3
aaron580
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Can't wait to see your progress. Make sure to take pics of the motor mounts you make for the cummins. I'm gonna do the same swap with a 3.9 next June when I have time. I've never seen a 3550 bolted to one before. Make sure your torque output isn't more than the tranny can handle.
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Unread 08-05-2012, 05:11 PM   #4
UltimatE
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You can click the little edit button on the bottom right of your post.
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Unread 08-05-2012, 05:54 PM   #5
Homebrewed2
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My needs

The 3.3l is different than they 3.9l. the 3.9 is a 5.9 block minus 2 cylinders, the accessories and motor mounts from a 5.9 should work. These 3.3 are used in a off road equipment, skid loaders, wood chippers stuff like that. They come with a alternator and no other accessories. I want to run air conditioning and an a Izusu npr alternator with vaccum pump for the brakes and heater controls. I will post pics shortly.
Sorry my post might be kind of random, I am trying to show everything I hae done so far.

I was never a fan of the square heads light, sorry. I looked into swapping the whole grill from a cj or tj but I didnt want to swap the hood and fenders also. So here is my solution, it still needs a
picture-174.jpg
picture-175.jpg
picture-176.jpg
picture-177.jpg
picture-178.jpg
picture-179.jpg
picture-181.jpg
I will try and post more tomorrow.
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Unread 08-05-2012, 06:26 PM   #6
imstillatwork
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Square to round is like a sex change. It just ain't right! Enjoy what you have! lol-just messin'
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Unread 08-05-2012, 07:30 PM   #7
Homebrewed2
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Can you change the title on the thread?
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Unread 08-05-2012, 08:54 PM   #8
NH2112
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Looks pretty good! I'll take a diesel over a gasser any day - and not just because I can get a lot of waste Jet-A from work. I actually have plans to swap in a Nissan SD33T, most likely with a 3550 as well. The plan as of now is to run a hydroboost instead of vacuum boosted brakes. My goal is a Jeep that needs/has no electronics whatsoever to run. There aren't a whole lot of diesels that weigh in at close to a 4.2l, so heavier springs may be necessary. Plus they're often pretty tall, especially the ones with deep skirt blocks, so a suspension lift or some major sheet metal work on the oil pan may be necessary. Hopefully I won't have to doghouse the firewall.
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Unread 08-06-2012, 05:44 PM   #9
Homebrewed2
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The good, the bad, the ugly

My has the typical rot on the passengers side between the door and rear wheel. If yours doesnt have it consider yourself lucky. i replaced mine but it was a pain in the a@@. Here are some pics of it and my fuel filler swap also. I needed a bigger filler neck for the diesel so I robbed one off of a 1976 k20. With a litle straightening I think it will work.
I think I am going to try and find a tj plate holder.
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Unread 08-06-2012, 05:57 PM   #10
pasinbuy
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First off try logging on using Google Chrome. It is a much faster engine and in this forum spell check is automatic.


Second, Dude you are the man. I have been thinking for a while now. "Why don't I see more diesels in Yjs?"
If you hit water as long as you have a snorkel the diesel will motivate right through. The diesel also has
much more torque to move the Yj through anything, including big rocks. As I see it. In a diesel your battery
can float away and you can still move as long as you do not stall her. I love it!

I will be following your thread! You can bet on it. Good building.
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Unread 08-07-2012, 12:48 PM   #11
tdij
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Sub'd for a nice diesel build.

I like the square lights... but that is a nice idea with the grill. Look forward to seeing that completed and on the jeep.

The 3.3 is a great choice for a YJ. Keep up the build thread!
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Unread 08-09-2012, 06:50 PM   #12
Homebrewed2
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Diesel engine

Is there any way to change the title on the thread? Sometimes I am dyslexic.
Here are some shot of the mods I did to make the engine work for me. I wanted to keep the a/c compressor and power steering pump. I have read there is a a/c compressor mount made for these in some piece of equipment but I have never found pictures of it. Looking at some other builds people have used a alternator from an Isuzu npr that has a vaccum pump built into the back of it. The only downside is the alternator is rated for 70 amps only. I hope the vaccum pump has enough to run my brakes. I also wanted to keep the serpentine belt set up.
I took a water pump pulley from a 5.9 and cut the hub out of it.
picture-201.jpg
Turned down the crankshaft pulley so it would slide over it.
picture-203.jpg
picture-204.jpg
I needed some place to bolt on some idlers and a belt tensioner. Here is my first attempt. The front gear cover already had threaded boss I bolted it to.
picture-248.jpg

The alternator used to mount on this bracket. I flipped it over and welded a piece on to it the ran a bolt through it to mount my a/c compressor.
picture-250.jpg
On the top I made a brace for it.
picture-380.jpg

I bolted the alternator to the bottom of the a/c compressor and I will bolt it to the plate I made for the front of the engine.
picture-379.jpg
For the power steering pump I removed the fuel filter and made a plate to bolt on the power steering pump I had from a 98 cherokee.
Attachment 449864
Attachment 449867
Attachment 449868
picture-257.jpg
I need another idler pulley and a belt tensioner but here is how it is going to go.
picture-382.jpg
Hopefully I got my measurement close and the belt will stay on.

Last edited by Homebrewed2; 08-09-2012 at 07:07 PM..
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Unread 08-09-2012, 07:01 PM   #13
ashland82391
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heck yeah this is going to be awesome! Dont get discouraged from posting from some of the other members, im looking forward to the finished product!
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Unread 08-09-2012, 08:07 PM   #14
calpbs
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This is an awesome conversion. I love the custom work.
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Unread 08-10-2012, 09:15 AM   #15
jamesmc
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@Homebrewed2 Keep at it. Great pictures and great idea/approach.
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