Fitting turbo to cruiser 100 series 4.2l diesel

Today, there was a post on Lcool from someone with a suspected cracked piston on a turboed 1Hz; and on 70scool from someone who had had two gearbox overhauls in 80,000k on a turboed 1Hz 79series.
I guess that summarises the downside to turboing a 1Hz.

Upside is that you'll enjoy the strong rigid front end on the 105.

To my way of thinking, it will cost you say $4000 to turbo a 1Hz (more if you want an intercooler). Resale value will not be enhanced - may go down, fuel consumption will not be as good, and it may cost you in repairs.

If you want both a rigid front end and a factory 1HD-FT or 1HD-FTE, your only options are to get a factory TD 80series or to buy a current series (post 2001) HDJ78/79series troopie or traytop. Or consider the new TD Prado when its released shortly.

You should get 350-400000 klms out of a 1HZ if its treated right.
The turboing of these is always a subject of debate.
There are plenty of owners around who are happy with their turbo conversion.
Much of the damage can be avoided by fitting a pyrometer which measures exhaust gas temperatures and not having the turbo oost too high.
By keeping the temperatures inside an acceptable range the likelyhood of damge becomes very low.
You cant use the turbo for long periods on steep hills like you could in the factory turbo version landcruiser

AXT ,Safari and Duraglide all sell turbo kits .Probably $4K or more drive in drive out.

Another option that is becoming cheaper and more popular is supercharging.
Similar thing to turboing but it runs off a belt instead of exhaust gas and has a high reliablity.
New types of blowers are low maintenance unlike the older versions
Sprintex has done about 900 Landcruiser,Patrol and RR conversions in WA
About $6k drive drive out

in our workshop at the moment are 2 landcrusers with turboed 1hz engines blown up.1 a 100 series and the other is an 80 series
cheers

Hi Stephen,

I have an 80 Series Landcruiser with 1HZ that has had a Mike Vine aftermarket turbo fitted since the day it rolled out of the showroom.
It now has 300,000km on the clock, does not use a drop of oil between changes, never gets hot and I tow a 2500kg yacht regularly in Qld summer temperatures.

In my opinion if you follow certain rules when fitting turbo's to the 1HZ motor you can expect the same reliability and engine life as you can without a turbo.
The key issues are:

1. Do not go for maximum boost pressures - limit the boost to 8 psi and no more

2. Use good quality synthetic oil changed every 5000km - I use "Synforce Cruiser Oil"

3. Ensure that your cooling system is 100% and also for a little extra protection I would recommend increasing the capacity of coolant. (larger radiator etc.)

I have also had GQ 4.2 naturally aspirated diesel and many times have had overheating issues when towing. I have not had this problem with the Landcruiser.

If I were you I would go for it as not everybody can afford a factory turbo Landcruiser and once you have driven a 1HZ with a turbo, you will never go back to a naturally aspirated version again.

Good luck with your decision,
Brett

Stephen,

I would go a head and get the turbo - it's the best thing you can do, other than supercharging it. As long as it's done by proffessional fitters and you look after it there should be no problems.

I turbo'd my 80 Series when it had 180 000 km on it and it has done approx 100 000 kms with it fitted and it's great. I keep it serviced and drive senisbly and there is no problems.

A good desiel will last 500 000+ km if it is looked after - there is a saying that most desiels aren't run in until 200 000+ km.

In the above posts that mention so called problems with the turbo motors there is no proof/evidence that the damage was caused by the turbos and the damage could be put down to other mechanical problems due to poor up keep etc, hard driving by the owners because they beleive you can thrash a desiel etc. Speak to a qualified fitter such as Denco and you will be given the right advice.