Builds 1HZ-T HZJ78 All-Climate Expo Build

[DamoPeru]

bit of an edit to the exhaust system, added a wrap from the turbo past the footwell. i will be covering the wrap to protect it from crud once she's on the road again

the leftover wrap went beside the rear fuel tank, which i re-routed closer to the tank to give more room for airbags on the rear springs.

the exit is angled out the side to keep the exhaust away from the rooftent annex hanging over the back entrance, so i can run the motor when camped up... the cooking annex will be on the other side of the vehicle as well.

 

[DamoPeru]

well things are back on soon, getting ready to install this baby

 

[Blade]

Damien, I heard about you at some Diesel shop last week in Lima
Great work!

On the Turbo: we made 120'000km so far with LOTS of load (3.6-3.8tons) and so far engine (about 300'000km) holding fine. BUT I always keep an eye on EGT (never over 550-600Celcius pre-Turbo) and no more than 8psi boost. Maybe you got too much out of your engine?
In Argentina you can get 1HD-T by the way if you are ever interested to upgrade. They sold officially the HDJ80 there.

So far I never felt I use an exhaust brake. The 1HZ brakes extremely good with its high compression... but I can see it's benefits.
I upgraded to EBC pads, was a HUGE improvement over the crappy Toyota pads! But they wear much faster.

Try to get a SEPAR or similar Diesel filter. I clean it every 5000km and see in the glas if there is dirt and water. In Central america, Ecuador and Bolivia the Diesel was VERY dirty and most of the time I had little bit of water in there!
Peru, Chile, ARgentina and Brasil has very clean Diesel compared to other places. The original Diesel Filter I change every 25'000, but at 50-60$ it's nothing I want to do every 5000km as Toyota Peru does!

By the way, my friend in Lima also has a HZJ78, but bought it new 2 yeers ago... rare car in Peru, much more often seen in Bolivia if you need parts.

For what is this protection on the axle? To protect the birfs? Never saw that before..

my 2 cents

 

[DamoPeru]

you mean rubber covers on the ball joint? just to keep the grease clean. they are used alot in mines where the environment is corrosive, and i figure you can't do any harm by keeping the rubbish out of there.

which diesel shop was that? Cat Cummins Service? I haven't come across anyone else here that i would recommend.

i have the toyota prefilter and two factory diesel filters after that, i usually just purge the factory ones even now and then see what comes out.

are you still in lima?

cheers,

 

[DamoPeru]

oh, and i can't remember if i mentioned it previously in this post (a lot has been going on in other threads but not here as I haven't installed the stuff yet), but I've gone for the factory 1HZ-T option. with the dirty fuel issues i decided it was better to stick to a IDI turbo motor and I'll be running it to factory 1HZ-T specs.

 

[Bisonthecruiser]

Damien! Where in the world did you get your exhaust brake? I've got a 1HD-T and haven't had any luck finding one.

 

[DamoPeru]

Damien! Where in the world did you get your exhaust brake? I've got a 1HD-T and haven't had any luck finding one.

http://gearingdynamics.com.au/Exhaust-Brake-for-small-diesel-vehicles

they do them for 2.5 and 3" exhausts, the only thing really specific to the kit for landcruisers are the pedal brackets for the microswitches, but even still they are for RHD 70 series and I modified one and made up another as I have LHD.

but i reckon you should be able to find a similar generic kit in the states, although the AUD just fell to a six year low against the USD so its a good time to buy!

 

[Blade]

I see... first time I see this rubber protection. Looks interesting! Although I must admit on my 120'000km I never had issues with dirt. BUT I also regrease the bearings every 30-40k and did the birfs about 80k ago and will do it again in a few months when I get home. That Marlin seal is leaking...

Yes, Cats... I wanted to check prices for cleaning the injectors. I paid in Cusco at the Bosch Service about 80Soles, in Lima he wanted 80USD just for a clean. I figured out I rather have them rebuilt when they are ready. Got only 20k on them and he said they are fine.
I also got a 1HZ-T, 3.6-3.8tons, lots of offroad use. Broke 7 rims, 2 leafs, 3 shackle pins etc But engine still running fine so far, but as said, I have 1 eye on the road, one on the EGT all the time, especially in countries like Peru where it always goes steep up or down!

I met a few 1HD-T overlanders, so far nobody had problems with the dirty fuel. Worst fuel was in Canada. Destroyed my pump and 3 other HZJ overlanders I met. All had pump failures in Canada due to lubrication problems!
I have a 1HD-T pump housing since then... almost same pump as our 1HZ!
Next time I would install a 1HD-T... sucks to worry all the time about the EGT and although I would have much more power I just hardly use it because I worry to kill the engine. I really used all of it's power in on our 4 day Paracas trip, but did worry all the times we kill that engine at 650-700C peaks. Maybe that's why my engine still runs after such a long time and such a big load!

No, we are now in Zorritos... we already visited 3months Peru in July-Oktober last year. Now we are driving very fast up the coast. Almomst 3.5 years on the road. Did run out of money, time to go home from Cartagena and plan our next trip!

 

[DamoPeru]

Next time I would install a 1HD-T... sucks to worry all the time about the EGT and although I would have much more power I just hardly use it because I worry to kill the engine. I really used all of it's power in on our 4 day Paracas trip, but did worry all the times we kill that engine at 650-700C peaks. Maybe that's why my engine still runs after such a long time and such a big load!

yeah i would have done a 1HD-T if it was an option, but a troublefree engine conversion just wasn't going to happen in Peru. But when i said 1HZ-T, i mean factory 1HZ-T turbo, pistons, conrods, turbo cooling elements etc. as designed by toyota with OEM parts and thus lower compression than the 1HZ, so I don't expect the heat issues you get whacking a turbo on a 1HZ without making those adjustments.

good luck re-accumulating your pot of gold for the next trip!

 

[DamoPeru]

Yes, Cats... I wanted to check prices for cleaning the injectors. I paid in Cusco at the Bosch Service about 80Soles, in Lima he wanted 80USD just for a clean. I figured out I rather have them rebuilt when they are ready. Got only 20k on them and he said they are fine.

i must get mate's rates from him... he charged me just a little over 200USD for a full rebuild replacing everything and tuned to 1HZ-T specs. but knowing him I can imagine he wouldn't just clean them and let you go on your way without checking the release pressures as well (did they do that for 25USD for in Cusco?). Though i'd pay whatever he charged as its just so refreshing to deal with trustworthy and genuinely nice mechanics in Lima! that reminds me, i have to pick up my pump!

 

[Blade]

he said 270$ for rebuilt so 200$ is a good price! That's why I said, not worth it to pay 80$ just for a simple clean.
Yep, they set all pressures at equal levels. I was there all the time and checked the work. I usually do EVERYTHING myself on the car and if I can't like in this case I sit there and watch and tell them what to do

Factory 1HZ-Turbo? Where do you have this info from? I talked with David a while ago about that. Asked also in Toyota Peru and Cusco and also the Cat's guy in Lima and NOBODY could really tell me for sure if it exists or what's really about this engine! In Europe everyone told me it was never built or sold and all 1HZ-T you see are aftermarket. You got more infos?

Turbo cooling elements? I got now an HDJ79 cooler (bigger than your HZJ78 cooler!) and so far super happy with it! With AC cooler in front and big winch and bumper and bug-mesh I never get more than 80Celcius water. Oil never gets over 100Celcius on roads, no matter how steep. In Paracas at really WOT at super low air pressures in sand I saw 105Celcius oil temperature, water 80Celcius, ambient about 20-25C.
Super happy about this radiator! Made in Toyota too...

 

[DamoPeru]

Factory 1HZ-Turbo? Where do you have this info from?

when you have time to read... https://forum.ih8mud.com/threads/factory-1hzt.168354/

over the years there's lots of debate, for a year or so its focused on the stickers, then about page 7/8 all the details start to unravel. amazing thread to read from start of finish, bit of a loch ness motor

a lot of my 1HZ-T info is there, I only want to fill this thread with dry details of whats actually been done after its done

 

[Bisonthecruiser]

http://gearingdynamics.com.au/Exhaust-Brake-for-small-diesel-vehicles

they do them for 2.5 and 3" exhausts, the only thing really specific to the kit for landcruisers are the pedal brackets for the microswitches, but even still they are for RHD 70 series and I modified one and made up another as I have LHD.

but i reckon you should be able to find a similar generic kit in the states, although the AUD just fell to a six year low against the USD so its a good time to buy!

Cheers for the fast kickback. I'll get on this.

 

[ca18sean]

While the she was in jail (6 months) getting the motor rebuilt, I had the side windows modified for security. that is the original frame with galvinized sheet metal welded in, the interior side now has bolts for fitting interior furniture. would have done that to both but we plan to sleep inside when necessary and wanted to retain some ventilation, so the remaining received the bars, whose brackets are welded to the window frame. I removed the windows for both of these mods. the rubbers were dry and had shrunk but I was successful in bringing them back to life with a rubber treatment product that also brought them back to their original size.

Damien,

Do you have any more pictures of the solid window? I'm thinking of doing this to the back side windows on my troopy and I'd like to see how they did it.

Thanks!

 

[DamoPeru]

Damien,

Do you have any more pictures of the solid window? I'm thinking of doing this to the back side windows on my troopy and I'd like to see how they did it.

Thanks!

I don't have any photos at the moment, but I'll take some when I eventually get her back from the engine rebuilder. After removing the glass and rubber, a gal sheet was cut to fit the outside groove, a 1" steel flat rod was bent to form a vertical support up the inside middle , and tabs with M10 nuts were added in the corners to support future furniture. After welding everything in place, it was siliconed inside and filler was used on the outside join.

I've since purchased bigger mirrors to deal with the new blindspots, which you should consider. I suggest putting paper on your windows and driving around for a for week before committing.

 

[DamoPeru]

i should just give an update and make up for the distinct lack of photos.

well things are back on soon, getting ready to install this baby

how naive of me to think things would be go smoothly, 4 months after dropping her off, the rebuild has only just started this week. to cut a long story short, some measurements by the machinist were communicated incorrectly and i ended up importing the cylinder sleeves twice, after the first ones didn't fit, the second set had to be custom made that took the factory over a month to forge and only arrived last week. I had these centrifugally forged from A536 '100-70-03' ductile iron by PowerBore in Salem, OH.

Previous to that I'd been collecting practically everything to replace everything but the big bits, many thanks to Yan (@Akella) for helping me with all the nuts and bolts (literally).

 

[DamoPeru]

I don't think i detailed it here in this thread, but i decided to abandon the AXT turbo kit and further performance enhancing, and I ordered all the parts to retrofit the OEM 1HZ-T turbo and keep it's performance relatively stock. Here's some photos of the unique OEM 1HZ-T turbo (17201-17020), once i get it installed and dyno-tested I'll post up a parts list to do the entire 1HZ-T turbo conversion with toyota parts, which starts at the airfilter lid and includes air, oil, vacuum and vent hoses amongst other bits and pieces.

thanks to Yan for this photo, this isn't all the bits required, but alot of them

 

[Bisonthecruiser]

http://gearingdynamics.com.au/Exhaust-Brake-for-small-diesel-vehicles

they do them for 2.5 and 3" exhausts, the only thing really specific to the kit for landcruisers are the pedal brackets for the microswitches, but even still they are for RHD 70 series and I modified one and made up another as I have LHD.

but i reckon you should be able to find a similar generic kit in the states, although the AUD just fell to a six year low against the USD so its a good time to buy!

Damien. Have you used teh Gearing Dynamics Exhaust Brake? I just ordered one for my 80. Just was hoping for some feedback. If you ever sell your 70 please put me on the shortlist to buy it from you

 

[DamoPeru]

Damien. Have you used teh Gearing Dynamics Exhaust Brake? I just ordered one for my 80. Just was hoping for some feedback. If you ever sell your 70 please put me on the shortlist to buy it from you

I can't remember if I mentioned it here or somewhere else, but I have used it but very little. I installed it and drove up and down a 300 m steep incline near my place about 5 times, but then discovered my head problem and haven't had the car on the road since. However from that I can say that mine with the 3 inch exhaust is not going to be as effective as that of a 2.5 inch system, also mine is quite a way back from the ideal location, but even still it was obvious that I've gained a gear for descents... where I used to have to go second or third because the higher gear would run away, it seems i'll be able to cruise down with the higher gear. Also, this isn't going to help you pull up much quicker, gearing down for traffic lights etc you won't notice much difference, it's just a tool for long sustained descents which is a big deal for me here in the andes. But like I said, if you have 2.5 inch system and install it closer to the manifold you might get much better stopping performance than what I found.

 

[DamoPeru]

Ah, and no chance mine goes on sale any time soon, I have no interest in the modern engines and I'd have to suffer a serious accident to consider parting with her!