Boosting 4.2 TD power, candid questions (3 Viewers)

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Thanks! This one is even better than the pdf one as it is easier to navigate inside of it!
and it seems to cover more, doesn't it? Not all is necessarily relevant for my particular model, but still seems a complete encyclopedia!
 
and it seems to cover more, doesn't it? Not all is necessarily relevant for my particular model, but still seems a complete encyclopedia!
Absolutely! It’s the whole series-100 service manual and not only the 1hd-fte engine repair manual
 
You can get a Unichip + the software for much less than 1000GBP.

If you have a pre-facelift (4 speed auto) you have the CT26 turbo, same as the 80 and the Australian 100s. Facelift and after, it's a Garret VNT (gt2359v) turbo.
3" exhaust gives noticeable improvement in car response and turbo spool time with no other mods needed and is 100% required if you start adding power in other ways. The FTE is really chocked by the stock exhaust.
The stock intercooler is barely enough for stock power. Again, replacing it is a must, when you start chasing numbers.

The performance market for the Land Cruiser 100 is almost non existent and unfortunately a big chunk of it is in the UK, which sucks due to Brexit.
I got this exhaust - Land Cruiser HDJ100 3" Heavy Duty Full System - Cybox Automotive - https://www.cybox.co.uk/product/hdj100-3-heavy-duty-full-system/ it is well made, it has a large straight through resonator, but they do not offer a cat option for it. I am chasing one aftermarket to add to the exhaust.
For intercoolers this one is very well made and is bolt on - Toyota Land Cruiser 100 Series 4.2 intercooler - AlliSport - https://www.allisport.com/shop/performance-products/intercoolers/toyota-land-cruiser-100-series-intercooler/

The factory ECU cuts fuel when boost starts to increase. I haven't been able to find exact numbers for the VNT turbos, but in Australia the CT26 tops at 12-13psi from the factory and the ECU starts cutting fuel at 15-16psi. There are boost clamps that "hide" the boost from the ECU, but then it does not add the needed additional fuel and increasing boost without increasing fuel can end very bad for the engine. So a piggyback is required for any meaningful results.

Wink 4x4 - Engineered Performance - http://www.wink4x4.com in the Netherlands is a distributor and tuner for Unichip. He also tunes turbos specifically for cruiser - there is a custom CT26 based one he developed for the 1HD-FT on the 80, which should be a more or less bolt on for the FTE. he high-flowed my VNT and fitted better CHRA and compressor wheel. I highly recommend chatting with him, but be advised that he is horrible at communication - can take him a while to respond even if you just paid and wait for him to ship back.
Unichip ECU Mapping Chip Distributor | Unichip Europe - https://www.unichipeurope.com also offers it, but in the UK.
Steinbauer is available in Europe, but if you have an auto, better stay away - it does not cut torque on gear shifts, which eventually wrecks the auto.

Depending on the mileage of the car, the fuel pump gradually starts delivering less and less fuel. Mine was delivering ~80% at 430 000km. These pumps are super rare and expensive to work on, as there are few specialist and diesel benches that know them. In all of Europe I found 1 place in France, 1 in Spain and 2 in UK. Might be more, but well hidden. Refurbishment prices are ~€1500-2000
Hi!
Planning to upgrade factory intercooler on a stock HDJ 100 4.2TD. Any advise what size to get? 600x300x76 mm too big ?
 
I got this one before Brexit - Toyota Land Cruiser 100 Series 4.2 intercooler - AlliSport - https://www.allisport.com/shop/performance-products/intercoolers/toyota-land-cruiser-100-series-intercooler/
It's full width and is supposed to be bolt on, but I had to cut a bracket and redo the steering fluid cooler (which might be hot climates only thing, so irrelevant for Finland). The AC and transmission cooler do not interfere.
Thank you for your reply!
Your Hundy is also stock? And yes I do have that cooler. Looks like I have to order one intercooler now......😃
 
I have a 3" exhaust and tweaked turbo, but haven't increased fuel yet, as I am piecing together what to do to strengthen the auto transmission before that. The 3" exhaust definitely had an impact on acceleration, according to the butt dyno. With the big intercooler intake temperatures dropped significantly on the highway (30C at 20C ambient when doing 140km/h, compared to 50-60C before).
I replaced the steering cooler with a looped piece of copper pipe that I bent manually and runs in front of the intercooler. Will try to remember to take a photo later today.
 
I have a 3" exhaust and tweaked turbo, but haven't increased fuel yet, as I am piecing together what to do to strengthen the auto transmission before that. The 3" exhaust definitely had an impact on acceleration, according to the butt dyno. With the big intercooler intake temperatures dropped significantly on the highway (30C at 20C ambient when doing 140km/h, compared to 50-60C before).
I replaced the steering cooler with a looped piece of copper pipe that I bent manually and runs in front of the intercooler. Will try to remember to take a photo later today.
Ok! So you have done some mods to your LC. Nice!
I've had my LC 100 for little over year now. Just after I bought it the injector pump died. Eventually had to send it abroad to get it fixed( in Finland only one place who rebuild these pumps, my estimate was 7000 euros!) Cost for clean-up,test drive and parts was only 800 euros! Now pump is in the specs and running great.

I bought Vector Tuning box last year but not installed yet due to pump rebuild. Any experience with that product? I know Unichip is the most common for these 100 series.
 
Ok! So you have done some mods to your LC. Nice!
I've had my LC 100 for little over year now. Just after I bought it the injector pump died. Eventually had to send it abroad to get it fixed( in Finland only one place who rebuild these pumps, my estimate was 7000 euros!) Cost for clean-up,test drive and parts was only 800 euros! Now pump is in the specs and running great.

I bought Vector Tuning box last year but not installed yet due to pump rebuild. Any experience with that product? I know Unichip is the most common for these 100 series.
Where did you get it rebuilt?
 
Just emailed the company in Finland( Tammerdiesel in Tampere Finland) that arranged the service abroad. I never asked where they send it!😅 hope they give some info.....
Thanks!
 
I fitted an Alisport intercooler on my 2004. The instructions are pretty useless and lots of adaptation was needed. I did retain the OEM steering cooler, on top of the intercooler. I also fitted a cybox 3" exhaust. It's nicely made, but hangs way too low where it goes around the transfer box. I modified mine to a better route there. I have a tuneit piggy back ECU as well. I haven't upgraded or modified the turbo yet but to be honest power is more than adequate so I won't do the turbo until I have to. Only done 120k miles so that could be a while.
 

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