Advice on turbo kit 100 series wagon

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S

Shindigger

10 Year
Joined
Sep 14, 2015
Threads
1
Messages
13
Location
Toongabbie Cictoria Australia
Hi guys, im after some advice on choosing a turbo kit to suit my 100 series wagon.
Motor is in good condition with 275k on the clock.
As we all know these 1hz motors with no turbo are a slug!

Been looking at a few kits now im a bit comfused.
Some say only use the garrett ball bearing turbos and dont use dts (mitsubishi turbos.)
However some say the dts kits are fine and never have problems with them.

One installer said to me that the garretts need a intercooler
Others say this is not required.

Looking to spend around 5-6k

Any recomendations on which would ne a good kit for me?
 
No havnt considered gt Turbo
But i will definitely have a look.
What is your reason saying ball bearing turbo not suited to a Diesel?
Is it because you dont really need fast spool up or reliability issues?
A few people i have spoken to recomend the ball bearing garrets over the mitsubishi "journal bearing turbo."
What do you think is better oil or water cooled turbos?
Also ive been looking at thr "safari turbo kit which is air cooled, but more expensive
They say in there add they are more suited to aussie conditions

Safari Diesel Turbocharger System for the Toyota Land Cruiser 100 Series 1HZ diesel engine

Others recomend the dts kits which are cheaper too

Too many choices
 
I probably shouldn't specifically refer it to diesels, but a bush-bearing turbos seem to be more reliable, but more significantly, I don't like to cost of rebuilds on a BB turbo. Also, I have absolutely no proof of this, but I wonder how the greater amount of contaminates in the oil would go with the ball bearing.

Toyota run water-cooling on their factory turbos, and I believe this is to help stop the oil from 'coking' if the turbo is shut down hot. I run water-cooled, but I don't think it's an issue. I understand that a hotter turbo operates more efficiently, and some members with tricked-up turbos don't run water.
 
Incidentally, I see that a ball-bearing turbo must be water-cooled
 
AussieHJCruza said:
I probably shouldn't specifically refer it to diesels, but a bush-bearing turbos seem to be more reliable, but more significantly, I don't like to cost of rebuilds on a BB turbo. Also, I have absolutely no proof of this, but I wonder how the greater amount of contaminates in the oil would go with the ball bearing.

Toyota run water-cooling on their factory turbos, and I believe this is to help stop the oil from 'coking' if the turbo is shut down hot. I run water-cooled, but I don't think it's an issue. I understand that a hotter turbo operates more efficiently, and some members with tricked-up turbos don't run water.
Click to expand...
 
Ok thanks for the reply and advice
Muchly apreciated
Its a lot of money to outlay so i wanna be sure im getting the best one possible without going to silly.
Ive sent an enquiry to gt turbo
Prices/what turbo they use etc in thier kits.

The hp diesel kit with air to air intercooler is the cheapest by far offering an intercooler
But i will keep an open mind
Cheapest is not always best.

With some of the diesel specialists in melbourne mention intercooler and its another 1500-2k
Same with the safari kit

I note with the hp diesel kit the intercooler seems very small
and the kw amd torque gain with thier intercooler is about the same with other lits not using am intercooler which seems strange
As others quoting 48% power gains with no intercooler say adding an intercooler adds another 15-20% in power.
So i am somewhat confused?
Maybe the hp diesel kit can be safely tweeked to operate with more boost??
 
Gturbo use a modified Toyota CT26 turbo (came on 1HD-T, Supra etc in different forms) Can't comment on price.

Yeah, interesting what you say about the power figures, and you're correct, you get what you pay for.

I would say, regardless of the kit you decide to go with, the most important thing is fitting EGT and Boost gauges, and tuning it correctly. Not so much limiting the boost to 'X' but ensuring that AFRs and EGTs are where they need to be to keep the engine happy.
 
Yes reliabilty and a good tune is most important
I wouldnt care if its say only 30% increase in power if that means all
My pistons stay in one piece:)

A friend recomended i install new conrod bearingsas a bit of extra insurance, which can be done by just pullibg the sump off
Do you think this is required?

Most of these kits are only mild boost if 8-10psi so im thinking maybe not needed?
My engine is in good comdition with 275k on the clock

Some of these kits dont even include upgraded exhaust, which i feel would be a "must"
 
Shindigger said:
Yes reliabilty and a good tune is most important
I wouldnt care if its say only 30% increase in power if that means all
My pistons stay in one piece:)

A friend recomended i install new conrod bearings as a bit of extra insurance, which can be done by just pulling the sump off
Do you think this is required?

Most of these kits are only mild boost of8-10psi so im thinking maybe not needed?
My engine is in good comdition with 275k on the clock

Some of these kits dont even include upgraded exhaust, which i feel would be a "must"
Click to expand...
 
I can vouch for the gturbo. Great bit of gear. More advanced than any turbo that is available in a kit today. Boost pressure is not a problem, its heat that will kill the engine. A 1hz @ 8psi with a 30% increase will not last as long as one at 15psi with the same output.
Also another vote for journal bearing over ball bearing. With the amount of contaminants a 1hz put in the oil, journal/plain/bush bearings will last longer. With a diesel always being on boost compared to a petrol, spool response in negligible between the two.
Also, a turbo is either watercooled or not. The primary function of the oil is lubrication, secondary is its ability to dissipate heat.
Have a talk to Graeme @ gturbo. He actually builds his turbos, not just finds the closest match and puts it in a kit. Very knowledgeable man.
Sorry for the long post
Ps. As for afr's, the 1hz is indirect injected and likes to be kept above 21:1 for reliability. Direct injected engines can be tuned down to 17:1 and still be safe. If your tuner doesn't/can't tune by afr, RUN!
 
Last edited:
Shindigger said:
Most of these kits are only mild boost if 8-10psi
Click to expand...
Mild boost these days is around 15-20 psi. 8-10 is considered low. Diesel tuning has come along way in the last few years here in AUS.

There are a few compound 1hz's running around pushing 50psi with stock internals.
 
Thanks for the advice Silver star
No problems with the long post:)
The more i look at g turbo "custom buit" "grunter" turbo, the more I like it:)
Checking out a dyno report on the 1hz with this grunter installed i can see the power comes on nice and early!
They have a comparison on thier facebook site, there turbo up against dts, safari and another one
And the g turbo grunter has a way better power and torque curve with the power coming on nice and early in the rev range
(1200 rpm.) and staying good though out the rev range.

Price isnt too bad either.

After shooting off an email to g turbo. They were most helpful with answering the questions i have.
They also recomended an installer in victoria who could do the install and tune for me
 
Well my new gturbo kit has been ordered now amd is on its way :)
Gone for the grunter extreme kit.

They dont include the air box to turbo and the silicone elbows or cross overpipe, i will have to sorce them locally.

Now can i just plumb into existing cross over pipe or do i need to buy an adaptor and use 2.5" stainless steel pipe ?
Any one have a pic of their 1hz with this grunter kit installed?
 
Could you get the crossover off a 1HD-T, and perhaps the airbox lid and airbox-turbo hose? If you don't have any wrecker contacts, I know a couple. Seem the Gturbo is based around the Toyota CT26, it should be a largely bolt-in job.
 
AussieHJCruza said:
Could you get the crossover off a 1HD-T, and perhaps the airbox lid and airbox-turbo hose? If you don't have any wrecker contacts, I know a couple. Seem the Gturbo is based around the Toyota CT26, it should be a largely bolt-in job.
Click to expand...
Hi Aussiehj cruisa, if you could inbox me your contacts thAt would be Great:)
I have been ringing 4wd wreckers all over victoria today with no luck.
The ones that have the motor dont wanna pull parts of it.
I got a price from toyota dealer today and nearly fell off my chair!!!!
 
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