Kind of a loaded DIESEL question...thx in advance

[dieseldog]

Hey, guys--some of you are losing sight on what the gentleman is starting with. I recall him asking, "What I am looking for is your opinions on the correct motor for my current setup." Given his statement, the quickest, easiest answer is the 6.2 or 6.5--end of story.

 

[Stone]

Hey, guys--some of you are losing sight on what the gentleman is starting with. I recall him asking, "What I am looking for is your opinions on the correct motor for my current setup." Given his statement, the quickest, easiest answer is the 6.2 or 6.5--end of story.

Well...I don't necessarily think that the 6.2 or 6.5 offers an easier or quicker setup with his H55f (with the AA) than the 12H-T...but if cost and availability were factors, as you have previously mentioned, then yes, there's a definite advantage there with the domestic.

That's not to say that the 12H-T is not a viable option, as several American MUD members here have quite a collection of diesel Cruisers with Toyota powerplants.

 

[mikruiser]

The 12H-T turned out to be out of my price range, although it was real cool that G and S makes it available to us. Leaning towards the 6.2 probably...maybe with the sidewinder in the future...

 

[dieseldog]

Stoney, I hear ya; however, since the 6.2/6.5 would use the same motor mounts as the 350, you gotta admit that it makes the whole swap a ton easier. That's not to mention that the cooling issues have already been worked out, and the wiring will be similar as well.

I LOVE the 12H-T and all the Toyota diesels. It's just that the man was looking for a quick, simple, swap that worked with what he had.

 

[dieselcruiserhead]

I personally just can't stand the 6.2s and 6.5s, nothing personal expecially to guys who have installed them, but I can't stand the sound and basic design, just my $.02... If you have a good running 350, I would just fuel inject it, I don't think I'd swap it for a 6.2 IMO, especially without a turbo... Again just my $.02...

 

[cruiser_guy]

I agree with Andre. The 6.5 turbo is a little weird in that only one cylinder bank runs the turbo and the other just exhausts normally. At least thats how the ones that I've seen work. Seems to me that it would cause some back pressure inequalities.

I'd agree that it's the easiest swap for the 350 if the guy is determined to go diesel though.

 

[IHWillys]

The 6.5 turbo is a little weird in that only one cylinder bank runs the turbo and the other just exhausts normally. At least thats how the ones that I've seen work. Seems to me that it would cause some back pressure inequalities.

None of the 6.2/6.5 turbos I've seen do that. They generally locate the turbo on the passenger side(not for van applications) but plumb the driver's side exhaust over to it. Every GM factory turbo'd 6.5 is using all 8 cylinders to power the turbo.

Ken

 

[Technikev]

I agree with Andre. The 6.5 turbo is a little weird in that only one cylinder bank runs the turbo and the other just exhausts normally. At least thats how the ones that I've seen work. Seems to me that it would cause some back pressure inequalities.

The DS cylender bank exhaust crosses over to the turbo towards the back of the engine. The turbo runs off all 8 cylenders. It's kind of hard to see the x-over unless you look for it.

The injector pump issues that people seem to hear about typically affect only the electronic Stanadyne DS4 injector pumps on the 6.5 TD. This failure is usually caused by the overheating of the "black box" called the FSD (fuel solenoid driver). The FSD can be relocated a short distance for better cooling, alleviating this well known problem. This issue does not affect the 6.2 engines as they have the mechanical DS2 pump as well as the '93 6.5TD as it also had the mechanical pump.

That being said, I also believe that the 6.2 GM diesel would be an easier swap, although keeping it all Toyota carries alot of weight with me. A -40 with a 12HT would be a mighty fine piece of iron.

-kevin

 

[roscoFJ73]

Dieseldogs point that the conversion is halfway there is a valid one.
However after seeing and hearing a 6.2/6.5 fitted into a 75 series I thought it very noisy ,maybe too noisy for a DD.
Ive also heard 80 and 105 series owners complain about the noise from the chev diesel so how is it going to sound in a 40?
The Blazers and Hummers have bigger bodies and soundproofing to soak up the noise.
In a 75 much of the noise seems to escape from underneath so I suppose a 40 will do the same.
Great thread and keep em coming

 

[ChuckB]

I'm still researching diesels for a 60 and this is a great thread!!