Turbocharging the Toyota 1HZ 4.2 diesel will destroy it if you get it wrong | 4xOverland

Please change the title of this video as there was no real explanation of the serious issues of putting a turbo on a 1HZ motor. You can avoid blowing holes in the tops of pistons simply by changing the fuel air mixture (yes I know it doesn't have a carby however they do run a computer which you can break into and tell it what you want from it) and are you running a pyrometer to monitor EGTs. What intercooler are you using if using one at all? There are so many unanswered questions here.

In most of your videos, You've really emphasized of Solid axle than IFS, maybe why??

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Andrew mention the pistons being thin at the top which can blow holes in them.
The other cause of piston problems is the 1HZ was never designed to run with a turbo, the next gen engine, the 1HD not only had better pistons, it had oil passage ways that squirted oil to the underside of the pistons to aid the cooling of them.
Don't fit big turbos on a 1HZ, they just aren't designed to have them.

What turbo kit is this one called mate?

Would you turbo charge your new beige 105?

The perfect combo it seems is to put a 1hd ft into a 105 series. Much easier swap without all the electronics of the fte. What a great pity Toyota didnt make them like this today they would be priceless.

We need closure on this subject Andrew.. did u have success with the product. And would you turbo your latest HZJ105 ? The one you are building right now.

Smashing i say

It was such a mistake to not offer the 1HD-FTE in the 105 chassis.
Cheers

i think you need to toughin up ive driven all over australia in a 75 series without a problem even without crumple zones

Hi does the motor need to be rebuilt to put the turbo on?

Isn't is easier and more reliable to swap 1HZ with 1HD? It is a bolt-on swap.

The reason why Hzs blow pistons is due to the AFR they are tuned to.  To maintain reliability they need 22:1 to be safe.  THis has been proven over and over.  A well designed hi flowing turbo will ensure this AFR is maintained.  Boost will not destroy a hz.  But overzealous fueling can and will.  I would strongly recommend checking out gturbo and xxi industries.  They are the leading R&D tuners for turbocharged HZ's.

Bland Cruiser... ;) Great cars and i have huge respect for them as pieces of engineering, but they just don't do anything for me. In the same way that an audi R8 might be better than a lamborghini or ferrari, but who cares? Land Rover Defender all the way :) Bucketloads of character, fun and style. 

Reliable, don't Rot, 200,000 mile, out live an LR, but I couldn't live with that outside design and interior is foul

So basically.. If you're going to turbo charge, do it WHIT cooler. Boosting any diesel engine you are fine if you keep under 0.65.-.0.7 bar!!!! It will give you 50%+ more hp and keep running as it was ment to be. YES I'M ONE OF THE GRAZY om606 SUPERTURBO DUDES FROM FINLAND. Happy tuning and keep them smoking :P If you need elements, PPDIESEL in Finland will help you

What turbo kit was used for this upgrade? How is it holding up?

for sale also 2 others hdj80 's full option. all 3 have 150.000miles. exellent condition, no dents, no rust. 0032497 7060 95

actuale is it a hdj81V VX limited japanese care. with icebox cooler. full option.

for sale hdj 80 with turbo en solid axles. RHD google for 2dehands.belgium/autos/bestelbusjes-bestelwagens/toyota/toyota-landcruiser-hdj81v-vx-limited

Who makes the turbo kit you had installed? Thanks!

@rdenecker I can't say authoritatively but my understanding is that the V8 is more picky about fuel quality, in particular the injectors are prone to failure if the fuel is bad. Plus of course the familiarity of mechanics and existing stocks of spares are compelling reasons to keep the old motor in a place that's so hard on vehicles.

@SamTheSuave Yes...has increased consumption about 20%.. but if you have more horses, you have to feed them!

@4xforum My apologies for asking the following question, I am sure this has been dealt with before, but why, in SA, is the 76 only available with the 4.2 and not also the 4.5 V8 turbo diesel? I struggling to find an answer, a few links or a quick explanation will be greatly appreciated.

That's interesting about the 76 being still fitted with the 1HZ in SA. Over here in New Zealand, the same wagon is fitted standard with a "1VD FTV", or commonly referred to as the 4.5L V8 inter-cooled turbo diesel. Great video - can't wait to hear of your experiences since the turbo charger installation.

@4xforum Ah I see, my mistake. They look very similar, though I had no idea Toyota put IFS on the 100 series. I would have assumed that all of their large 4x4s had two solid axles. Still, it'll be interesting to see how much of an improvement that LPT will make to your performance, and whether or not it will affect your consumption.

@SamTheSuave Good question. This vehicle, the 105-series Land Cruiser, was only ever built with this motor, or the equally reliable but absurdly thirsty 4,5 EFI straight six. This is such a great chassis, but only built with engines designed for the Third World. That is this vehicle's weakness. Hence the turbo mod. There is even a gearbox upgrade now available, so it can cruise at 120kph @ 2400rpm, instead of 3000rpm. The 100 series was built with the 1HD-FTE but has independent front suspension

Looks lovely, (high praise coming from a Land Rover fanatic!) though would it not have been better to simply purchase an already turbocharged diesel, such as the 1HD-T (165bhp, 260ft/lb) or the 1HD-FTE (201bhp, 317ft/lb)?

Beautiful cruiser! Toyota forever!

Had that car on my trips in Austrlia - loved it! Really comfortable, reliable, really good in rough areas - and as you said - power could be a little more ;-)