Diesel

[ksk228]

Has anyone done a complete diesel swap with a manual trans? I understand this is a project, though I would think you could use the cummings diesel and trans... Is there a parts supplier that could assist with the swap by providing kits etc.. Does anoyone have a write up with pictures or pictures of a diesel and manual trans in the grand? Thanks!!!:)

[rustywagoneers_com]

read and search, several threads going on right now.

peace
Dave

[The PIG Smith]

Lot's of posts on this topic
I am sure I could found more, but I stopped at these links:

My 1990 Grand Wagoneer 6.2 Diesel project (http://www.ifsja.org/forums/vb/showthread.php?t=39992)

6.2/6.5 diesel owners... (http://www.ifsja.org/forums/vb/showthread.php?t=14988)

3.9L 4bt cummins (http://www.ifsja.org/forums/vb/showthread.php?t=34101)

Diesel (http://www.ifsja.org/forums/vb/showthread.php?t=3625)

My 6.2 Diesel GW (http://www.ifsja.org/forums/vb/showthread.php?t=22615)

non turbo 6.5 Diesel on E-bay (http://www.ifsja.org/forums/vb/showthread.php?t=5911&page=2)

Project update... (http://www.ifsja.org/forums/vb/showthread.php?t=27701)

6.2L Diesel in a J20 (http://www.ifsja.org/forums/vb/showthread.php?t=18718)
Here are OhioJ20's comments from this post made on February 20, 2005:

Alright guys!! I'm in NE Ohio, close to Akron. The J20 got her 6.2 two years ago. It came from a 1984 GMC Van. It had the TH 700 tranny, but I didn't have the money to buy an adaptor for it to my t-case.

Alright, we removed all the electrical wiring that was for the engine, glow plug wiring, wait to start light, water in fuel light, etc. I also used the motor mounts, but had to make new frame mounts to put on the J20. We used the ignition wiring for the J20. Oh, took out the glow plug relay also. Wiring wasn't that bad, and no polution crap to worry about. The motor fits in snug around the heater box and the brake booster. We did use the Jeep brakes, as GMC uses hydrulics for brakes, but wouldn't hurt to have a belt driven vaccuum pump as well as the gear driven one.

Now, the 6.2 has the same bellhousing as a Chevy 350, as for the bellhousing a bought from a bone yard was for a 350. Now, we had to get an 1/4" steel plate to make our own adaptor for the bellhousing and the T-18. Luckily my cousin is a true machinist. So, that saved the money from Advance Adaptors, which want $300 for the same thing.

The great thing is, I can access the glow plugs from inside the fender, and it is ALOT easier than changing spark plugs from a AMC 360!!

As for how I like it. I LOVE it when it is above 45 degrees out! If you don't plug it in when it gets colder, it is a pain to start. Also, you don't have the room for the two batteries GMC uses. Need to get the biggest cranker you can squeeze in there.

I also had to use the van's filler nozzle, or you couldn't fill the truck up with the stock jeep nozzle. I also had to cut out the area into the tank, to allow a bigger pipe to go in(diesel foams when filling). Another perk, I put in the van's 30 gallon tank where my spare tire goes, so I now have 48 gallons at 22 MPG, you do the math!

Towing: It doesn't take off like some madden woman, but tows great. It did get hot on a real long grade, but didn't over heat. I also used the stock AMC 3 core on it, just had to get the ports changed. I would recommend a 4 core, that is what I have for the GW. I also bought an electric exillery fan to use to prevent that on the J20. The gearing in the J20 and the T-18 is perfect for a 6.2 I will get pictures of the set up soon, the J20 is covered up for the Winter so Ohio Salt doesn't eat her up!

Now, the GW is a work in progress, I have the motor, but I am currently in the process of body work and paint. My plan is to use the TH 700 from the van, but I got a TH 400 that came with the Suburban for the GW. My only concern is the weight of the motor on the front axle of the GW.

Now, if I left anything out, let me know or feel free to ask more! E-mail me if you want at piakp@yahoo.com (piakp@yahoo.com)

There are two members here that have GM Diesels in their FSJ
OhioJ20 has a 6.2L in a J20 Pickup truck
He is also working on a 6.2L in a 1990 Grand Wagoneer

DieselSJ has a 6.5L Turbo in his 1987 Grand Wagoneer

Search on their names and their posts will provide lots of excellent info!

[ksk228]

Wow thanks a lot! Its good reading!

[FSJeeper]

I have been involved in several of these swaps over the years and have a fresh cherokee WT frame loaded with a built Turbo 6.2/6.5, eaton fuller gearsplitter/OD, SM465/doubler NP203/205 on built one tons in my driveway at this time.

[The PIG Smith]

I have been involved in several of these swaps over the years and have a fresh cherokee WT frame loaded with a built Turbo 6.2/6.5, eaton fuller gearsplitter/OD, SM465/doubler NP203/205 on built one tons in my driveway at this time.

Sorry, FSJeeper, that I did not include you on my FSJ owners that has performed GM Diesel Engine swaps Hall of Fame.
It was not intentional.

I knew you had access to much ex-gov't 6.2 CUCV powerplant and drivetrain components.
I believe it was you that suggested that a person could get an easy 300 horsepower from a 6.2

[FSJeeper]

I believe it was you that suggested that a person could get an easy 300 horsepower from a 6.2

Well, not easy to get 300 HP because it requires a complete rebuild and some expensive parts. Following the 6.2/6.5 page GM diesel buildup, I went with the penisular teflon/ceramic pistons with 18 to 1 compression ratio. BD cam gear drive with advance, 6.5 heads, J series intake, bosch glow plugs, upgraded injectors and injection pump, etc., etc. On top of that, the engine was blueprinted as much as that can be done. Heads flowed, rotating assembly lightened and balanced as an assembely including HB and flywheel/pressure plate. Max torque and HP at at 1900 rpms. A build like this costs several thousand dollars.

It got 20 MPG in a 10,000 lb decked out M715 (4.56 gears) and I expect about 25 mpg in the Cherokee with the OD and 3.54 gears. Should be chugging along at 1900 rpms at 70 MPG and with the gear splitter/OD and doubler setup, I have 32 speeds.

Downside of the diesel is the inability to spin high rpms for sand and mud. The doubler is for the 4 to 1 low range to best utilize the 3200rpm redline the diesel has. Theoretically sitting on top of 3000 rpms or so and the 4 to 1 low should take care of the sand and mud issues a diesel norammly has.

[FSJeeper]

Forgot to add the Turbo setup is a custom banks unit dialed in for this application.

[rustywagoneers_com]

say, FSJeeper, is there a full build (or partial build) thread a fella could search and find on this here site or any other location on yonder worldwide web?

sounds like the way i would love to be doing one if i wasn't operating so near my credit ceiling all the time...

peace
Dave

[FSJeeper]

http://www.thedieselpage.com/finale.htm


This is the famous 6.2/6.5 power buildup and is what I used to go by for mine. This site is a goldmine of information.





say, FSJeeper, is there a full build (or partial build) thread a fella could search and find on this here site or any other location on yonder worldwide web?

sounds like the way i would love to be doing one if i wasn't operating so near my credit ceiling all the time...

peace
Dave

[ksk228]

Hey thanks guys!! This has been really helpfull now to start crusing the junkyards for some chevy's and getting the garage ready