same as 2h? 6dr5

[wileycoyote]

I found this engine and it runs. Will this be worth putting in a fj40? What would it bolt up to tranny wise? Whats it worth? Thanks.

 

[DanS HJ-45]

Definitely not the same as a 2H. Past that, I know nothing about it...

 

[canucksafari]

This may help you do more research
Chrysler, Dodge, and Jeep Diesels: diesel engines in Chrysler Corporation cars and trucks
Dodge used a Mitsubishi diesel in 1978 in pickups and Power Wagons. The engine was the Mitsubishi 6DR5, 3950 cc, with 105 hp at 3500 rpm; it was virtually identical to the Land Cruiser dieselengine of the time. The year this engine was dropped is unclear.

and this makes it sound like it is better suited for a tractor or electrical generator.
How Mitsubishi Diesels Got Into 1978 Dodge Rams
The Mitsubishi showed it had one basic problem up front as soon as it was in the truck and running: the RPM was limited to 2400, which made for a great go-for in town but top end was 48 mph. They dropped the rear gear from 3.56 to 3.07, and found the power curve now needed a turbo to help go over 45 mph

 

[wileycoyote]

Just read that. Thanks. Im guessing my $650 bucks would be better spent elsewhere. ;( thought i had made a "find"

 

[amaurer]

Definitely not the same as a 2H. Past that, I know nothing about it...

There are a couple pages on the 'net claiming that its "nearly identical" to the "Land Cruiser diesel of the time." And there is this post here on mud:

There is a rare early 80's Dodge diesel 1/2 ton that was equipped with a NA engine called the Mitsubishi 6DR5. It is identical to a Toyota 2H, same volume and everything, some small changes even has the same bolt pattern as a Toyota. It was also a slug like the 2H so kits were common. I found a Rajay turbo kit for this engine, and adapted it to my 2H. It was not hard at all. Boost was also perfect, 6psi on flats, up to 9psi on hills. PSI totally controlled my how much fuel you give it. Worked awesome, truck is still running great years later and lives in the Yucatan and is driven daily.

https://forum.ih8mud.com/diesel-tech-24-volts-systems/196748-2h-diy-turbos.html#post2894919

... but "identical" seems to mean different things to different people; the fact that the 2H and 6DR5 have the intake and exhaust, as well as the injector pump, on different sides of the engine seems like a pretty big difference to me.

This page has this to say:

CIS Auto Web wrote (in a wonderfully detailed article) that the Mitsubishi diesel was nearly identical to the Toyota Land Cruiser’s 2H diesel in every respect -- it had an almost identical Nippon Denso injection pump, and was approximately the same size and weight, with a similar power band. The 6DR5 was a factory option from the late 70s and early 80s Dodge trucks and came naturally aspirated from the factory; it had the Land Cruiser’s bolt pattern.

http://www.allpar.com/mopar/mitsubishi-diesel.html

The "detailed article" has disappeared from the web, but archive.org has a copy:

The Mitsubishi is nearly identical to the 2H in every respect -- it even has an almost identical Nippon Denso injection pump, and is approximately the same size, weight, and sports a similar power band. The 6DR5 was a factory option from the late 70’s and early 80’s Dodge trucks and came originally naturally aspirated. However, many were turbocharged due to the sluggishness of the engine in such a large truck. This turbo charger also fits a 2H engine, and in fact I got mine from Royal Rose’s Mitsubishi 6DR5 (covered in the October 2002 issue of Toyota Trails). They also have the same exhaust flange pattern. However, the Scout uses a commonly American bolt pattern while the Mitsubishi actually uses the Land Cruiser bolt pattern!

That was found on a page with some information about 3B-II's that I know to be complete and utter crap, so it should be taken with a grain of salt.

 

[wileycoyote]

Identical to the land cruiser engine in the fact they BOTH run on DIESEL.

 

[canucksafari]

... and I am not aware of a 2H having an upper rpm of 2400.

 

[wileycoyote]

This one didnt have the turbo either.

 

[kim]

... and I am not aware of a 2H having an upper rpm of 2400.

God I hope not.

I think it is 4000 but I've never been brave enough to break 3500.

 

[darthvincor]

... and I am not aware of a 2H having an upper rpm of 2400.

That was for the mitsubishi engine.

2H is limited to 4170 rpm.
(4100 without a fluid coupling )

 

[canucksafari]

That was for the mitsubishi engine.

2H is limited to 4170 rpm.
(4100 without a fluid coupling )

That was sarcasm in relation to the claim of being almost identical to a 2H.