Kind of a loaded DIESEL question...thx in advance (1 Viewer)

[mikruiser]

So I have a 72 fj40. I currently have a 350 in it, w/ and AA adapter to an h55f and a split case. I am trying to figure out what would be the best option for a diesel motor at this point. I know that a 6.2l GM diesel would bolt up to this application, w/ of course plenty of other mods (i have been through the tech section on this). But, from what it sounds like the 6.2l is loud and wouldn't get as good of gas mileage as a 3b/13b/13b-t. I am looking for something that is practical, as in does not require too much fabrication and madness to install, gets good gas mileage(yes, this my daily driver, and its going to get biodiesel). It also needs to be able to push the cruiser in fifth gear, at least on the flats. I am not looking for step by step intsructions from you guys...yet. What I am looking for is your opinions on the correct motor for my current setup. Still have the stock gears. Any and all info is appreciated. Anyone in the market for a nice sbc 350? haha, thanks again. I don't know the Toyota lineup of diesel engines that well other than a page i found with just the specs, so info on noise and other stuff like that would be appreciated.
-Mike

Here is a link to my cruiser for you guys to brainstorm or do whatever you need to do with...

https://forum.ih8mud.com/showthread.php?t=75153&highlight=pics+update

 

[lowenbrau]

I vote for a 12HT. It'll bolt up to your H55f.

Powerfull, simple, durable. Perfect for a Land Cruiser

 

[mikruiser]

did mention the lower the cost the better?
I will look in to that one(12ht)... also where is the best place to look to purchase motors like these?

 

[brownbear]

6.2 has plenty of power. Cheapest of the options.

3b is pretty low power, but rugged and fuel efficent.

a 3b and 6.2 chev diesel are in different worlds. one is like double the size.

Depends what your after.

Sure guys will say 1HZ or 1HD-T but expense and difficulties will be there. Worth it yes.

If you can find a donor 3b with powertrain it will simplifiy things immensely.

3b and 2h were the Canadian offered diesels.

the others come from Japan. G and S cruiser parts is a place to look for an engine. They are a vendor on here. They are just over the boarder from you, probably the simpliest of all.

 

[Stone]

I vote for a 12HT. It'll bolt up to your H55f.

Powerfull, simple, durable. Perfect for a Land Cruiser

I vote 12H-T also, with the 13B-T as second choice. Both are relatively simple to work on, have lots of low-end torque, and fairly fuel efficient...and your Toyota stays a Toyota. G&S Cruiser Parts here in BC should be able to get you a quote on any Toyota diesel engines.

The only bad thing about the 12H-T is that Toyota only made a run of a few years on them. Why do that to a great motor...I don't know.

 

[mikruiser]

So would I need to fabricate motor mounts for 12H-T or could I use the mounts from an F motor? Or?

 

[Stone]

IIRC I have heard that the 12H-T and F (may have been 2F) motor mounts are either very similar or the same...probably why Bruce recommended it in the first place? I don't know for sure though...

 

[dieseldog]

Here's a point to consider: If you already have been to the trouble of having a 350 mounted in the truck, you are halfway home for the 6.2 or 6.5 swap. Both have PLENTY more power than the Toyota engines discussed here. Your motor mounts would be the same for the 350 and the 6.2/6.5; no tranny marriage issues, cooling would be the same. Hell, you've got it made. Also, if I recall correctly, the old 6.2 mounted in the "heavy half" or 3/4-ton trucks (both were heavier than your cruiser) got better mileage than some of the Toyota diesels with which I am familiar.

If you were writing on a "clean sheet", then I'd say throw the door wide open to the Toyota diesel swaps; however, most of your work is already done. Please don't misinterpret my words: I love the Toyota diesels--obviously. I just think some jobs lead you in a certain direction, and your situation seems like just such a case. Good luck!

 

[cruiser_guy]

You need to ask yourself a few more questions. Living in the states and using this as a daily driver parts are going to be an issue. The non-official import engines will not have the parts support that an officially imported engine has. The Toyota diesels will likely need less maintenance and parts than the GM 6.2 though. Also the GM 6.2 is WAY more powerful than the Toyota diesels, it should be too since it's nearly twice the displacement.

Are you going to be satisfied with a diesel that will not burn rubber after coming from a 350?

Think it over carefully. We who drive diesels know that we wont be the first to the top of the hill but we will get there and it will be running long after your 350 or 6.2 is sitting in the scrap heap. It'll also go way further for the same dollar.

 

[lowenbrau]

I'll just jump in quickly with a couple of clarifications before more internet BS turns into gospel

early 6.2 GM V8 NA diesel = 135 HP / 235 ft/lbs
12HT Toyota I-6 Turbo diesel = 135 HP / 231 ft/lbs

Pretty close, I'd say

The later 6.2 got 7 more HP and 20 ft lbs. I wouldn't call that 'plenty' or 'way more' I'd call it about what you'd get by twisting the fuel a smidge on the 12HT.

I agree, otherwise with the benefits of the domestic engine in your application. They are cheap, very similar in shape to a SBC and have parts easily available.

If you still want a 12HT, and if G&S can't help you, Rob Mullen has a line on some and he's in your neck of the woods.

 

[toynut]

i vote for the 6.2 6.5 from gm heck the military has been running these in blazers and pick ups for years , despite what others will say about these motors they will get the job done , i love my 3b and that it costs me less to run than a honda accord but i would also love to roast a set of tires at a stop light too ! i would bet you wouldn't be happy going to any of the toyota cdm offerings !

 

[Eric Winkworth]

if you can live with the low power, 3B all the way, if you can't afford much 3B all the way, I just think keeping it toyota is the most imprtant thing.

 

[cruiser_guy]

Bruce, you're sort of comparing apples and oranges. I'd expect a naturally aspirated diesel to have lower power than a turbo-diesel. If you compare a ^.2 with a turbo to a 12H-T then I'm sure the 12H-T would not be so favourable!

I wouldn't recommend a non-turbo'd diesel of any manufacturer to Mike especially since he's used to the 350's power.

 

[mikruiser]

Wow guys, thanks for all of the input, keep it coming. I am used to that power, but I wouldn't be doing this if it was not more important for me to be able to be running biodiesel/WVO etc. and be getting better mileage all the while. As long as I can still cruise 60-65 in fifth gear on the flats I will have no qualms, I drove a clapped out F motor for about four years. I think a lot of it is going to come down to:

A: How much a 12H-T is going to cost and what parts it will require
B: How practical it is to start with putting a 3B and maybe turboing it later
C: If these ideas aren't reasonable to go with the 6.2, and prob not the 6.5 for relibility reasons

Keep the ideas coming. Anybody know what type of parts I what need to scavenge for the 12H-T or the 3B? Any links to builds with either of these or any other info is appreciated.

Oh, I emailed G and S for pricing, but who is Rob Mullen and how do I contact him?

 

[bigbrowndog]

The 12ht is running very low boost standard and is capable of running a lot more boost and staying 100% reliable. even the 2h has a lot more power and torque than the 3B and is something else with a turbo. There is little thought given to the 2H in N.A. but it is larger and develops more torque, seems its always piston skirt cooling that is quoted but the 2h is capable of lasting the same mileage with out it. The 3B was never fitted to our full size cruisers here because of the lack of performance.Fitting turbos to 2H motors here is so common and if kept at a sensible boost they are capable of high mileage.The 12Ht has piston skirt cooling and direct injection and responds well to more boost. I am told by engine builders here that the 12HT was an expensive motor for Toyota to build and it is still their favorites. They are still selling here at a premium usually from $7,500 up.The 2H and 3B are cheap compared to them, that may say something.

 

[cruiser_guy]

The things you'll want to watch for on any swap is the computers. The 3B and 2H and their derivatives are mechanical injection and do not use computers. I don't think the GM 6.2 is electronic but the later ones are.

Are you aware of the injection pump issues of the 6.2? I've heard of them going out way before they should and at a couple thousand to fix you don't want that too often.

 

[dieseldog]

The 6.2 with the Banks Sidewinder on it is a whole 'nuther beast. Have someone rebuild the pump with better components and you've got a very viable option--trust me. In any case, this swap is far simpler and inexpensive for you given the fact of what drivetrain you've already got.

 

[Tapage]

early 6.2 GM V8 NA diesel = 135 HP / 235 ft/lbs
12HT Toyota I-6 Turbo diesel = 135 HP / 231 ft/lbs

In the life some simple things make me happy .. Here one of those.

V8 392 Ci Vs 6L 248 Ci same power .. JA ! what you prefeer Visa o MasterCard .. is the same Thing ..

Buy Toyota !

 

[dieselcruiserhead]

I vote 12H-T also, with the 13B-T as second choice. Both are relatively simple to work on, have lots of low-end torque, and fairly fuel efficient...and your Toyota stays a Toyota. G&S Cruiser Parts here in BC should be able to get you a quote on any Toyota diesel engines.

The only bad thing about the 12H-T is that Toyota only made a run of a few years on them. Why do that to a great motor...I don't know.

my vote also

 

[exmodlad]

early 6.2 GM V8 NA diesel = 135 HP / 235 ft/lbs
12HT Toyota I-6 Turbo diesel = 135 HP / 231 ft/lbs

curious numbers...

International 2.8 Tgv Tdi 4 cyl = 135 HP / 277 lbs/ft @ 1400 RPM

this would be an awsome engine for a cruiser except for the cost