Austrian KZJ78 conversion to 1UZ-FE?

[peter_Kzj78]

hi All,
I am Peter from Austria, not Australia

I have visited your country 25 years ago but then I was not into 4WD yet.

I have a KZJ78 Prado 1996 with 1KZ-TE 3.0td and A343F autkmatic transmission.

I have recently fitted a new cylinder head but still I'm afraid it tends to run on higher temps when "raced".

I like the torque in low revs which are much better than on a standard 1HdTF in the 80 series. But from 3000 and up its quite toothless.

I have read about conversions to 1UZFE but still not sure about the entire procedure. Our country is almost like Germany if it comes to technical changes on vehicles so before you start you need to present step by step what is going to be changed and get preliminary go by authority...
Can anyone who dunnit give a short list?
I understand that transmission fits well but needs control unit?
What is your experience on mpg or liters/100km?
Has anyone fitted intercooler to 1KZTE?
How does that compare?

I am at the beginning of that journey and look forward to your replies.
I read the Hilux Surf conversion thread but I am missing a resume of it...?

Cheers
Peter

[kbushnz]

Welcome to the forum Peter.
There is a lot you can do with these trucks...
From what I can tell the 1UZFE conversion is pretty straight forward but for a daily driver it could be a little thirsty in the fuel consumption department considering the LWB Prado is around 2000kg's.

I have the same as you but have played with my 1KZTE.
It now runs a manual pump (no ecu)
Larger exhaust from the turbo back.
Water to Air intercooler.
Plus lots of other mods...

Have a search of this forum...
Plenty on info on here but you just need to read and read to get the bits you want.

[peter_Kzj78]

Hi Calvin,
Thanks for the welcome and info!
My current consumption is a minimum of 12,5/100km
But offroad and if you race it climbs to 18-20.
Would think the Lexus be in that range.
I was thinking about the intercooler a lot but with the E- version its hard to adjust the fuel pump. Friends tried snd ended up with loss of power and 20/100 onroad

I will search the pages as this wluld still be a preferred option as my car has seen a lot of water and mud and will also in the future

[peter_Kzj78]

I continued my research and find only conversions on manual gear boxes.

in some threads I only read enginge fits straight forward to the A343F gear box and oddly enough there is no adapter plate available, also only for manual.
so does it mean it really fits without adapter? anyone who dunnit confirm this?

thanks
pete

[juz]

Yup done it, fits just need 1uzfe bellhousing torque converter and pump. Swap them onto your A340 trans and your good to go, just need to run a Aisin warner ecu from a jeep or manualize your trans. Might be some info in my build thread:

http://www.offroadexpress.co.nz/Forums/viewtopic.php?f=22&t=22013

[kbushnz]

If you go to a manual box in what was an auto truck you will need to move the transmission cross member and also the drive shafts will need to be changed.
Ie length modified.
Just something else to add to the list...

[derk]

Hi mate, have you come across http://www.lextreme.com/ in your internet travels there's a pile of 1UZ knowledge and conversion information on their site

[peter_Kzj78]

Yup done it, fits just need 1uzfe bellhousing torque converter and pump. Swap them onto your A340 trans and your good to go, just need to run a Aisin warner ecu from a jeep or manualize your trans. Might be some info in my build thread:

http://www.offroadexpress.co.nz/Forums/viewtopic.php?f=22&t=22013

yeah, I´ve seen it before, was why I believed to be in the right place here.
so your automatic box just fitted the 1uzfe.
I am curious about your shift paddle and how that works. i visited the website you posted for it and believe to understand how it should work. what is your experience and what are the hazards? Overdrive will work in 3rd and 4th?

looks great! great build threat! you went for VVT version, wow. did you find problems with the immobilizer to get it started?

I´ve seen atm-conversion kits from OZ http://www.automatictransmission.com.au/news.asp
looks very professional and only ordering the parts would double the value of my car

[peter_Kzj78]

Hi mate, have you come across http://www.lextreme.com/ in your internet travels there's a pile of 1UZ knowledge and conversion information on their site

yep, I am in contact with Phil B. already, very helpful!

[peter_Kzj78]

If you go to a manual box in what was an auto truck you will need to move the transmission cross member and also the drive shafts will need to be changed.
Ie length modified.
Just something else to add to the list...

want to stick with the auto box, thx.

did you cut the tail of your truck?


b t w, thank you ALL!

[Jerry]

You can get a plug in chip from Germany for about $200 NZD will find the link, its as good as doing a manual pump conversion, if you are keeping the 1kz sort out the turbo dump pipe and bigger exhaust, the viscous fan hub needs sorting/replacing every 100000k as well. The dump pipe and 2.5" exhaust made a big difference to mine

[peter_Kzj78]

You can get a plug in chip from Germany for about $200 NZD will find the link, its as good as doing a manual pump conversion, if you are keeping the 1kz sort out the turbo dump pipe and bigger exhaust, the viscous fan hub needs sorting/replacing every 100000k as well. The dump pipe and 2.5" exhaust made a big difference to mine

thx, that´s still an option in case 1uz will not be approved.
Germany would be just around the corner anyways

I already have a 2,5" dump pipe and custom exhaust. but viscous fan is a good point, have discussed it yesterday with a buddy.

[juz]

yeah, I´ve seen it before, was why I believed to be in the right place here.
so your automatic box just fitted the 1uzfe.
I am curious about your shift paddle and how that works. i visited the website you posted for it and believe to understand how it should work. what is your experience and what are the hazards? Overdrive will work in 3rd and 4th?

looks great! great build threat! you went for VVT version, wow. did you find problems with the immobilizer to get it started?

I´ve seen atm-conversion kits from OZ http://www.automatictransmission.com.au/news.asp
looks very professional and only ordering the parts would double the value of my car

Shifter does 1,2,3 and 4 th is OD. You need to put a switch in that controls the Converter Lock, which you really only use in top gear or is also handy offroad on steep declines for engine braking. I didnt use VVT engine just gotta get one with correct sump and I ran viscous fan also.

[peter_Kzj78]

yeah, I´ve seen it before, was why I believed to be in the right place here.
so your automatic box just fitted the 1uzfe.
I am curious about your shift paddle and how that works. i visited the website you posted for it and believe to understand how it should work. what is your experience and what are the hazards? Overdrive will work in 3rd and 4th?

looks great! great build threat! you went for VVT version, wow. did you find problems with the immobilizer to get it started?

I´ve seen atm-conversion kits from OZ http://www.automatictransmission.com.au/news.asp
looks very professional and only ordering the parts would double the value of my car

Shifter does 1,2,3 and 4 th is OD. You need to put a switch in that controls the Converter Lock, which you really only use in top gear or is also handy offroad on steep declines for engine braking. I didnt use VVT engine just gotta get one with correct sump and I ran viscous fan also.

thx again. the switch that controls converter lock - is that part of the shift stick package or extra?

I also saw this comment in your build thread:
That's a sweet toy and it's cheaper and easier that what I could have sold an electronic solution for.

Just FYI though, as far as engine braking is concerned, in 'D' you get engine braking with third gear selected, with the shifter in '2' you get engine braking with 2nd gear selected etc. Basically I found with mine you could select 1st gear at 100kph and the engine would be at idle until you actually moved the original shifter into L. Also I found that trying to use overdrive in low range would give you what felt like 1st gear.

Hope that makes some sense. Basically just be careful until you know how all the cominations of the original shifter and your new controller perform.

did not figure out what it says...

[peter_Kzj78]

well long time no hear.... just had to kill the project.

Toyota will not approve the engine conversion and I would need testing and approval by a notified body which costs about 6000EURO plus exhaust fume testing of another 1000 EURO. I can buy a starship for that money.

so I will focus on the 1KZ-TE upgrade starting with the dump pipe and exhaust

[Clint]

Bummer! Your diffs may now be saying a silent thanks to European bureaucracy

We sometimes think we have a hard time with all the silly rules around modifying vehicles here, but in the words of that wise man from Taihape, 'we don't know how lucky we are!'

Cheers
Clint

[Gyxx]

I remember when the EU put a limit of 100hp on bikes back in the nineties. That pissed off a lot of people. I'm not sure but I think they dropped it since then.

And yeah Clint, you're right about that chap from Taihape, he was pretty damn smart... I'm reminded of his wise words every time I watch the six o'clock news...