Calling all Diesel Guru's

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Nice Troopy!

First - I would consider an engine OH, add a turbo and an H55 to the 2H. Keeps it mostly stock and she should run pretty well. Keep all the stock parts for a collector down the road!

Second choice - a 1H? something. Modern engines and parts, but $$$$

Third - An Isuzu. I might be biased, but a damm good good engine, easy and fairly cheap parts, fit well in a LC and have really good performance.

Looks good no matter what you do to her.

Doug

PS - I'm close by if you want to see an Isuzu

Just read all 14 pages of your Isuzu swap, just plain awesome. I'll look into it. I found a 12HT, it's also 24 volt, swap seem pretty straight forward, but I don't like what I am hearing about the motor seems like its becoming obsolete in a hurry. You do great work!!!
 
Just read all 14 pages of your Isuzu swap, just plain awesome. I'll look into it. I found a 12HT, it's also 24 volt, swap seem pretty straight forward, but I don't like what I am hearing about the motor seems like its becoming obsolete in a hurry. You do great work!!!

It might be out of production but parts arent that hard to come around, also if you're ready to do some scavenging you can fit parts from other toyota engines in it (or non toyota, for example pistons from OM should fit into 12ht with minimal machining)...

Ofcourse I understand if you're somewhat reluctant to swap in a motor that is out of production...
 
isn't the H engine sleeved?
i thought just the 2H and 12HT was non-sleeved ...
<scratching head>
 
I think the 12ht is a great engine, but it also lacks the reinforced top rind land and will suffer the same damage as 2hs eventually. I really don't know why Toyota didn't do a steel insert for it, but it is a known weakness of these engines that will fail eventually. Fortunately reinforced pistons are available.

https://forum.ih8mud.com/diesel-tech-24-volts-systems/601319-2h-ring-failure-causes.html

True, the pistons are the weakest link 12HT, however i've seen aftermarket pistons with steel inserts and also the mercedes pistons come reinforced, so with some money and time even that can be remedied...
 
I agree Blis that the pistons are not a deal breaker, but if your going to take a motor apart to put reinforced pistons in it, why not save some serous time and money and just do it to this motor?
 
If I had the money

I would love to see someone repower a troopy with a Mercedes OM606, I think it is the dream repower. Tons of HP and Torque, all available parts, just the added $1300 (plus shipping to finland and back) for a fuel pump. Smaller, lighter engine, put the HX35 turbo on it and away you go. Should still be waaaay cheaper than a new 12HT. Plus, you are in LA, you would fit right in....

I spect this will cause some reaction

HayMaker
 
Just read all 14 pages of your Isuzu swap, just plain awesome. I'll look into it. I found a 12HT, it's also 24 volt, swap seem pretty straight forward, but I don't like what I am hearing about the motor seems like its becoming obsolete in a hurry. You do great work!!!

You can get quality engine kits from australia for under $1300+ freight.Its the things like whole heads,cranks,blocks and some of the peripherals on the 12 ht engine that are scarce.
It would be a nice swap.
I think your 45 is just too nice to butcher it with a non toyota diesel ,regardless of how good that diesel maybe.
I cant help it,Im a purist

In the condition it looks in the pics ,I would be inclined to leave it as it is,and find a beater for running up and down the freeway,or put the blinkers on and ignore the abuse.
 
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True, the pistons are the weakest link 12HT, however i've seen aftermarket pistons with steel inserts and also the mercedes pistons come reinforced, so with some money and time even that can be remedied...

News to me,plenty of 12HT out there with 500000klms + on the original pistons
Constant overfuelling,lack of injector servicing or lugging the engine will kill any diesel piston.
 
Nice Troopy!

I'll chime in on this one as I'm in a similar situation and local, too. I also have an H-powered troopy in the SoCal area. I'm not looking to thread jack but wanted to let you know I did purchase a turbo kit from AXT Australia a few years back with a custom H manifold. I did test fit the turbo but have been busy with other projects and have yet to complete its installation.

I, too, have been contemplating the 12H-T option but haven't been able to justify the cost after purchasing the turbo kit. I'd be happy to show you what I've gathered for my project so far and it would be helpful to get together if you decide on going with the Turbo-H option. I'm interested in knowing what you ultimately decide...
 
Beautiful Troopy

I'm gonna be the rogue poster here and say keep the H how it is and give them the finger back. Who cares if you're going slow? You're driving a Land Cruiser, and not only that, but the nicest one around.
 
I have a troopy too, the original H engine only had 136.000 kms on it when it blew. The H's have a weakness, the lining protrudes the block, and the edge og the protrusion corrodes/breaks/burns out, and you'll start spitting oil from the breather pipe bad enough to warrant those fingers from those behind you.
I can only guess turboing it will accelerate failure...

After my H broke down, I threw a 2H and H55f in it. Took a weekend to weld up some mounts, make a cross member, get the wiring done and new exhaust.

My plan is 12H-t, H55f and splitcase.
The 12H-t has never been easy to find, but come on, the Interweb has made it SO much easier!
I remember when Toyota was the only source for parts, and when they ran out of pistons... Nowadays I can have my pick on Alfin pistons, gaskets, turbos, rockers, injectors, you name it!

When it comes down to it, it's up to you, and you alone. Right now it seems the 1HD is the bees knees in the eyes of most, I remember when everybody recommended 4BT/6BT conversions which seems to be discouraged now, before that it was V8's...

The Majority is not always right, especially when it comes to advising individuals.

I know several 1HZ/1HD owners that miss their 12H-t's, especially the 1HD-fte should be overly electronically controlled, lacking the simple grunt and speeder response of the 12H-t. But that's what I've heard, I have never driven one...

If you can get to try driving some of these engines, do that, that's my best advice.

And remember; the money you spend will be forgotten, the short-cuts will haunt you forever!
 
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