1HD-T serial number 0028026 rescue

[John Young]

We are just buttoning up the 1HZ with conservative safari turbo kit, which turned out very nice.

Then my younger son casually mentioned that he really enjoyed watching the progress on it and was thinking a diesel in his Middle East 80 "Holy Truck" would go very nicely.

I happen to be about to ship a truck to the US and I asked the shipping company about putting an engine in the container and it looks practical. But the truck needs to ship by early October and the only engine I could have ready is the 1HZ with uprated pistons, etc., and the safari turbo, which would leave me short an engine for the Schrodinger project. So I went out and started to look for something suitable for Schrodinger. I found a few.

Including an FTE

But after looking at all the wiring I dismissed the idea.

Then I happened on this...

12 valve 1HD-FT with H series transmission purportedly out of an 80

 

[John Young]

I've known this seller for several years now and bought a fairly large number of items from him. The seller was reluctant to sell to me because he felt the condition likely was to be pretty poor. Turns out he was selling the engine for a friend and it was out of Afghanistan and purportedly had been run on kerosene.

It is relevant to understand that mostly people shopping for diesel 1HZ/1HD engines here are looking to drop it into a vehicle and just run. That is not what I intended to do. Even if the engine looked really nice and looked good inside I was planning to send the injection pump to Bosch for a complete rebuild and I was also going to take apart the head and likely replace valves, change the bottom end bearings, machine if necessary, etc. So unless an engine has catastrophic problems and cannot be rebuilt, getting something that has kerosene-induced problems is not a show stopper.

The price was attractive so I went ahead and bought it today.

I hope to drop the oil pan and skirt tomorrow and see what the crank looks like.

I'm told this came from an 80 and when looking at another engine with the R151 bolted to it, it looks like the gear shift levers are offset a few centimeters.

It also has a broken shifter housing flange.

It does not affect whether the shift lever will lock in, but maybe I can find whatever Toyota used for the 105s that had H instead of R transmissions. If anyone has ideas on this I would love to hare them.

 

[AirheadNut]

I believe the H150/151 was used behind the 1FZ in 100-series, you could use an H152 set up with a 1HD input shaft.

 

[John Young]

After much to much effort we did manage to separate the transmission from the motor

And the other engine is done!

 

[John Young]

So today we broke down the 1HD-T.

I have never seen such thick, dirty oil. I think it could be used to pave roads.

And they obviously were not using Mr. Toyoda's expensive coolant:

In fact I think they were using a tap-water-gravel slurry instead.

Maybe they had the coolant freeze and knock out the front freeze plug. Whatever happened it now had some kind of plastic plug in there with lots of RTV. My bet is that it was the top of a rattle can.

I don't think it is supposed to be like this:

 

[John Young]

There is no EGR valve per se on this engine but I guess the valve cover vent tube put out enough blow-by to do this:

Then the big camshaft reveal:

We think we can re-use the camshaft. The machine shop will tell us for sure.

Finally the moment of truth:

 

[John Young]

Did not look too terrible at first blush:

I thought that black ring at the top was just grunge. It was not. But I will get to that.

The front of the crank had been beat on pretty good:

Oh and I think I will be needing a new oil pan:

The baffle was not in the 1HZ pan:

Mmmmm.... fulsome body with hints of underdone grits!

 

[John Young]

On to the crank!

Apologies for the quality of the photos. By this time I, and my phone, were covered with Afghani 1HD-T effluvia.

"Artist" rendering of an older armature mechanic documenting the condition of an Afghani 1HD-T engine, its surfaces, and now his surfaces and everything around having darkened by Afghani engine effluvia — oil, soot, and grime that have seeped and settled through decades of hard use. (For those of you that went to Los Angles Public Schools and have not yet recovered, 'Effluvia', from the Latin effluvium meaning ‘a flowing out,’ first entered English in the 1600s to describe invisible vapors, odors, or noxious emanations. In early medical writing, effluvia were thought to be the foul exhalations from decaying matter or diseased bodies that spread sickness — a concept tied to the old ‘miasma theory’ of disease. Over time, the meaning broadened beyond illness to encompass any kind of outflow, discharge, or residue, whether from living beings, buildings, or machines. In this mechanical setting, effluvia refers to the oily films, soot, and leaked residues that mark the engine’s long service.)

Pistons don't look too bad, all things considered.

 

[John Young]

We really enjoyed the kits from Engine Australia on the last engine, so I got up in the middle of the night and called my new friend Rob about the Afghani 1HD-T. He said that the valves and valve guides in their standard package was the equivalent of OEM, not improved or 'racing' so I told him we would source valves and valve guides particularly since the head is already in the machine shop.

The next question was identifying the pistons as this was a transition period. I had sent him photos and he thought they were from the earlier iteration. ChatGPT looked at the photos and also thought it was from the earlier period. To be really sure, we have to measure the opening in the crown. Also ChatGPT offered:

(I am deliberately trying to irritate the Ancient Swede by referring to, and relying on, AI advice.)

On the strength of this I told Rob to go ahead and finalize the order and shipping weight for the early style piston. I feel lucky.

Also Rob tells me that the head gasket is the same for this 1HD-T and the 1HZ, so if we can re-use the one we had to take off the other day to switch to a Grade 7 for piston clearnace, we can use it. Alternatively we can get another gasket here in Dubai. So I told him to remove that item from the order. With a little luck I will place the order in an hour or so so they can DHL out ASAP. Can't say enough nice things about Engine Australia. Their kits even come with very nice mints!