Pzj77

[bone]

Hi everyone,

I am a new member in here and was looking for some info on Landcruiser PZJ77 (hard top, 5 Cyl, 3.5 Lt Diesel, non-turbo).

I imported PZJ a few months ago but without the user/service manuals - a common thing in auctions, so they said. I must admit that info regarding this model has been too scarce!

I know its around new year in some parts of the world - a factor that might delay responses. I take this occasion to wish you you all a prosperous year 2005.

Any info regarding this very rare model is highly appreciated.

bone

[Radd Cruisers]

Hi Bone, looking like you got yourself a very cool rig.

Did you email me recently about bumper ends? If so I forwarded the information to Dave in Japan and he could not find anything with your reference numbers.

If Dave is lurking he would be able to help you otherwise I could send you his email adress.

Rob

[crushers]

i have the factory engine manual for the PZ and the chassis for the 7* series trucks...

[beanz2]

Congrats, Bone. The engine is covered in the 1PZ, 1HZ and 1HDT manual. Interestingly it is a North American manual so your dealer can order it. It is manual number RM172E.

The available North Am. 70 series Body & Chassis manual (36262E) only covers '84-'90. The Chassis & Body manual, the non North Am. 1990+ manual (RM183E) doesn't cover the 77 series, though most major components are shared with the 70,73,75 that are covered. The only light duty manual supplement I've seen is from 1993 on, and it has little about the rear side doors and seat. Its wiring diagrams don't cover the PZJ77, which I think was discontinued in 1993.

I assume you imported it from Japan (PZJ77 is a Japan only model), you are in Canada? Awesome. One of the very few 77 series running in this continent.

If you need some rear bumper ends I got some off a 75 series.

Dave

[bone]

Dear Rob and Wayne

Thank you all for the inputs.

Rob,

I believe it was someone else who wrote you about the rear end bumpers

Wayne,

It seems I may have to contact you privately. My email address is: akayesu@yahoo.com

Bone

[bone]

Dear Dave and others,

Thanks for a detailed input. Let me start by clarifying a few issues. The truck was imported to Kilimanjaro (Tanzania) from Japan but I am briefly in Norway and will be back in a couple of months.

Since the van was discontinued in 1993 and after such a short life span (5 yrs or so?) what would be the possible reasons? Mine is a 1992 model. Was it because they wanted to concentrate on the other heavy-duty trucks (the H series?) or was it something to do with the 5 versus 6 cylinders?

I e-mailed Toyota Norway and got replied that the manuals were out of stock and therefore they would not deliver any. Since I now know that the engine is covered in the 1PZ, 1HZ and 1HDT manuals, I might have to call back then.

Thanks for the rear end bumpers Dave but as I said, I am far away in the north. Let me start with a few questions now:

1. What are the most common problems with PZJ77 or any Japanese diesel engine that one should always keep an eye on?
2. What are the most delicate/soft parts? I requested for the timing-belt and oil/fuel filters to be changed
3. What is recommended to be changed at 85,000 km mileage
4. I normally STP my gasoline engines. Is it recommended for the diesel engines as well?
5. In that part of the world, there is always a problem of finding genuine parts at reasonable prices. What parts would be best purchased from Europe – I mean to be fixed immediately or within the first year?
6. I have looked around and got the impression that the fuel consumption of the LJ78 (2.4 Lt diesel, Turbo charged engines (Surf, Prado) is very similar to the non-turbo 3.5 Lt PZJ77. Is that true, and if yes, why?

Thanks,

Bone

[crushers]

the 2 piece fly wheel is reported to cost high and isn't reliable.
to me that would be the only reason not to get the PZ.
i would buy all belts and hoses, injector rebuild lits, air filters, fuel filters, oil filters from europe and take them with you.
i think you have covered the nessesities by changing out the timing belt. make sure the antifreeze is good for your climate.

congrates on owning a very rare unit. got any pics?
cheers

[beanz2]

The vehicle wasn't discontinued, but the 1PZ engine was. I'm not sure if the engine is that poor or if there is a defect in its design. It may just be that Toyota decided it no longer fit their engine needs. It is possible that they want to streamline their product lines to reduce dealer parts inventory, etc. Or they find in the markets they are, the fuel savings do not justify the smaller engine.

The 1HZ has replaced the 1PZ in all their heavy duty 7 series. As far as I know the 1PZ was only used in their J7 land cruisers and was never used in other vehicle lines, where as the 1HZ was used in the J8 land cruisers and Coaster buses during the same period. Maybe because the number of 1PZ engines needed was relatively small Toyota decided to stop it?

To give you some ideas what aid organizations carry to far away places, this is what Toyota of Gibraltar recommends for the first 2 years or 40,000 kms:

spares list

and what they recommend in general:

"essential items that can replace broken or damaged parts which could lead to a vehicle breakdown"

Dave

[roscoFJ73]

Looking at the 1PZ crankshaft sketch in the parts diagram it appears as if number 2 cyl was deleted.
I always thought 4 sroke 4 cyl engines were perfectly balanced and 6 cyl were a little out of balance ,so a 5 cyl really seems out of whack.

Would they have had to repositon the crank big ends to make up for the missing combustion stroke? or would they be able to rejoin without the missing cyl ?

I never saw the reason for making 1PZ in the 1st place. The cost of setting up another engine assembly process and supplying a spare parts inventory unique to a 5cyl to save the cost of an extra cyl seems hardly worth the effort.
None of the landcruisers needed the extra room in the engine bay.
Landrover added a cyl to their asthmatic 4cyl which makes sense(but really should have used the Isuzu 3.9 6cyl fitted in some countries)

Bone I was speaking to an diesel engine rebuilder who has done hundreds of 1HZ and he told me that if 1HZ arent worn out from high klms then the next most common cause of engine failure is from overheating which warps the alloy head,blows the headgasket and allows coolant to enter the combustion chamber shattering the rings or worse
Usually happens at freeway speeds before you have a chance to do anything.
I am assuming the 1PZ would suffer the same fate.

I think the 1HZ is also discontinued and all the new motors are now turbo ready 1 HD or 1HD-FTE, with or without turbo.

[crushers]

the PZ is reported to be a very smooth running engine. the PZ was designed to replace the 3B which it did in most models of trucks. the BJ73 was an exception, this one used the 3B till 1993.
cheers

[bone]

Wayne and others,

Thanks for the info on parts to take with me down or up there? I will have to take a closer look at my shallow pockets now.

Yes, I do have some photos with me but don't know how to attach them in here. I can send them to any volunteer.

Bonné Année!

Bone

[crushers]

thanks to Dave, i now know how. send me your email address and i will send the instruction Dave sent me...
wayne@crushersrule.com

[bone]

Wayne,

I have already sent you an email.

Thanks,

Bone

[bone]

Here are the photos (courtesy of Wayne's tireless efforts).
Cheers!

Bone

[roscoFJ73]

Moose and Bone are gonna drive us all crazy with jealousy showing pics of their cooler than cool cruisers

[crushers]

S W E E T !!
congrates

[beanz2]

Very nice!

I didn't know some JDM's come with semi floater rears.

Dave

[crushers]

isn't that one euro spec?

[beanz2]

PZJ77's are Japan only AFAIK.

Dave

[bone]

Thanks guys, thanks a lot! The baby is a real beauty! The sound of well tuned, smokeless 1HZ and 1PZ engines just kills me.

I once was told that this type of body and possibly weight differences between front and back, makes it easy for these vans to overtun in sandy terrains. Is it a driving skills issue or a common thing for most vans irrespective of make? Im looking for scientific reasons here.

Wayne, You mentioned the 2-pece flywheel as a major area of concern to you as the lamination seem to separate on wear. Correct me if I am wrong, but I hear that Nissan also uses the same tech on the Patrol/Safari series and I have heard almost no complains on those equally heavy vans (4.2 Lt Diesel engines).

What would be the way out then? Replace with Isuzu, Landrover ones if they fit? Rule out towing boxes? Ease on my left foot?

Will appreciate your help.

Bone

[roscoFJ73]

Bone quite a few of troopys do overturn in the aussie outback,but its really a matter of driving,weight distrubution,tyre inflation and often alcahol

Also in remote areas LWB 75 series are well and truly over represented,distorting the stats,hell your not going to see a Honda CRV out there

The flywheel I would leave until it needs a new clutch ,giving you time to research it more.
A single piece flywheel is probably better but I too have not heard of the Patrol having trouble with their setup

[bone]

Thanks RaoscoFJ73,

I previously asked about oil adsditives - have used the American product STP -but sure there are many products out there. I will simplify my question. Should one just buy good quality oil that do not rerquire additives (some brands claim to have additives pre-mixed already) or treat your engine the way you want.

I must add that I have extremely pleased with additives on gasoline engines (at 25 deg Celsius all year round) as you considerably increase the service time with minimal loss of viscosity. Quite pleased!

Much appreciation as always,

Bone.

[roscoFJ73]

Originally Posted by bone

Thanks RaoscoFJ73,

I previously asked about oil adsditives - have used the American product STP -but sure there are many products out there. I will simplify my question. Should one just buy good quality oil that do not rerquire additives (some brands claim to have additives pre-mixed already) or treat your engine the way you want.

I must add that I have extremely pleased with additives on gasoline engines (at 25 deg Celsius all year round) as you considerably increase the service time with minimal loss of viscosity. Quite pleased!

Much appreciation as always,

Bone.

Theres always lot of opinions on additives and this is mine
I say use a good oil/filters and change as per the recommended schedule.

I heard of plenty of owners who swear by additives and the manufacturers offer plenty of guarantees but they always seem short on independant,correctly audited scientific proof (show me some if someone has it).

Ive also never seen a car maker or oil company approve them for use with their products, but I have an open mind

[beanz2]

The troopies flop easily because of all the glass and metal placed high up on the vehicle. Does the 75 ute have the same tendency, Ross? The 77 may also have the same liability. Wider wheels or wheels with a more negative offset/less backspacing might be the answer. There, I just gave Bone a reason to upgrade to bigger tires

Has anybody heard of a one piece flywheel for the 1PZ? There may be some design reason it is a 2 piece, or Toyota would have kept it one piece, the same as the others.

Dvae

[wesintl]

WOW, Cool Truck!

[roscoFJ73]

Originally Posted by beanz2

The troopies flop easily because of all the glass and metal placed high up on the vehicle. Does the 75 ute have the same tendency, Ross? The 77 may also have the same liability. Wider wheels or wheels with a more negative offset/less backspacing might be the answer.

Dvae

Beanz I suspect the troopy would roll over easier than the traytop but statistics are hard to come by.
I think Monash University did some research but said it was inconclusive
Maybe the SWB BJ70 would be worse than the LWB 75. The shorty's can be a handfull going round bends on corrugated dirt roads

Many of the rollovers involving 75 series happen in remote Aboriginal communities and cattle stations from a combination of stray cattle,bad roads,burst tyres ,alcohol and from competing with road trains.

Unless there is a reliable witness, its fairly difficult for the cops to work out exactly what happened.
Its always easier to say you swerved to avoid hitting a camel than admit you were going to fast with a gutfull of piss

Mining and other companies in remote areas can no longer get insurance for workers transferring from one site to another after dark.


There is also the problem of hire companies renting 75 troopys and hiluxes to tourists who have never driven on dirt roads or deserts tracks before.
A little off subject but only last week a Japanese tourist drove to Mt Augusta in a hirelux in 115F heat and was found dead a 1klm from the car as he attempted to climb the big rock alone with no water.


I dont believe any experienced owner who loads his vehicle properly and takes all the right precautions will ever have a problem.
Some city folk can only imagine doing a 5 desert trek at 60 mph non stop with every conceivable home luxury loaded into the back

[beanz2]

Heheheh, a Hire - lux. I like that.

Dave

[bone]

Wayne, Dave, roscoFJ73 and all tech-oriented members,

When someone is off-loading the the PZJ engine to change the timing belt, what else can be changed at the same time?

I am still thinking about the flywheel stuff discussed before. Could it be possible to take a look at the clutch this time? I do not have any drawings at hand but was assuming that the gear box is going to be separated before off-loading the engine?

I am also told that the AC + fan belts, as well as the power-steering belt could also be replaced at the same time. What else could be fixed at this time?

Will appreciate your input as always,

Bone

[crushers]

unless i am really missing something here, there should be no reason to pull the engine (as assume this is what you mean by off-loading) to change the timeing belt. the belt is on the front of the engine...
i would not worry about the flywheel till it comes time to actually change it out...
as Dad use to say, "if it ain't broken don't fix it"...
cheers

[beanz2]

There is a tensioner spring on the timing belt idler that Toyota recom