Aftermarket Turbo LC 1HZJ-105 STD diesel

Mine has done 158000k, your situation perfectly mirrors mine, I can get by with whats its got.
Ive taken mine across the Simpson, thru the center to Kargoolie, thru the Victorian high country twice and has always got me there.
Its got barley adequate power when it's got nothing in/on it and no other passengers, but as soon as the family is in with a full fridge and with mt recently acquired 1 1/2 ton of van on back, just a bit tooo pain full,
Mine going in on Monday, get it back Wednesday so I will let you know then, unfortunately, I'm in Brisbane, cant help you with an installer.
I'm paying a premium for my system, but the bloke I'm using has a very good reputation, he doesn't just bolt it on and turn the fuel up,I'm also paying a little extra for pyro and boost guages, really looking forward to Wednseday:)))

Shane

Hi Craig,

I've got the same vehicle but a GXL. Put the turbo on at 80,000kms and the intercooler more recently. Vehicle has now done 163,000kms. I fitted a 2.5 inch exhaust system at the same time.

I've had no problems with the turbo (AXT in Melbourne - supplied and fitted) and when it was first fitted, the dyno showed a 30-40% improvement in the power and torque areas - you'll feel the difference! The boost was set at about 6-8psi and fuel economy didn't change much from the pre-install figure of about 13l/100kms.

The intercooler I installed myself late last year and there was a further gain in both power and torque (probably about 10-15% on top of the turbo figures). The boost was increased to about 12-15psi. It's a bit hard to know the exact improvement from the intercooler as the vehicle was dyno tuned by a different company MTQ (they also do turbos and might have several outlets in WA). Suffice to say that after a trip to the Simpson Desert where I though the vehicle was getting a bit sluggish - even back to pre-turbo performance, and after a changeover of injectors and a resetting of the fuel pump + the intercooler, the truck nearly doubled in KW's and jumped 50% in torque to over 300NM from its drive in condition at MTQ. I'm pretty should the fuel was tweaked up a fair bit because the fuel economy has taken a hit, but this could also be partly due to the fact that the weight of the vehicle has increased a fair bit with time as I've added heaps of extra after market accessories over the years (see picture for current rig). The fuel economy now is around 15l/100kms with the roof rack on.

Costs: AXT turbo + 2.5 inch mandrel bend exhaust was around $3,500 supply, fitting and dyno tune. AXT use a Garrett, water cooled turbo.

MTQ costs quite a bit more and use a Mitsubishi turbo - but their service is excellent. I believe the MTQ turbo kicks in much earlier (about 1500-1600 rpm) than the AXT turbo (about 1800-2000 rpm) but I was after the increased power/torque for highway driving rather than accelerating from a stopped position so I'm OK with the slower pickup. You might want a differentconfiguration - something to investigate further?

I also fitted a pyro and boost gauge into a pillar pod to keep an eye on temperatures and boost. I was very suprised to see how quickly the temperature climbs under load with the current configuration - gets up to 500-550C very easily! Gauges were sourced in USA for about $250 delivered and pillar pod about $100 in Australia. I think ARB might have the pods but you can get them on eBay as well. Labour for installing the intercooler and gauges was zero as I don't charge for my own time so you'll have to factor in about a day's work - say another $1,000 to install these.

Hope the above helps and good luck with the upgrade.

Cheers

Rob K

i fitted a DTS turbo to my 105 series over 4 years ago, unless you change the exhaust sytem your wasting your time. my plan was to fit the turbo one day and new exhaust system the next, due to the wife having a baby the turbo went on but the exhaust didn't happen for another week. whilst driving my fourby around for that week i thought the turbo was the biggest watse of money i had sopent, the minute i drove out of Beaudesert Exhausts driveway with a new 3" exhaust system fitted up, my opinion was changed completely. a few months later i fitted a front mount intercooler, once again a significant power increase was immediately noticable in seat of the pants driving.
long story short.... a factory turbo Landcruiser will always be a better motor then the 1HZ with aftermarket gear fitted to it IMHO, but if you are going the 1HZ route, fit a new exhaust, pyro gauge and an intercooler aswell for engine longevity.

Mine was fitted just under the 200K mark, Its a DTS system and now has (give or take) 450K on the clock. I change oil every 7500km with a filter and boost is resticted to 10psi. It may spike to 12psi but will quickly settle on 10 and at 450,000km I would say it kills the 1HZ turbo doomsday crowd. The diff needs replacing and the motors still going hard.

I had a Safari unit fitted by Fremantle Fuel Injection about to my 105 about 20k back. It had 200k on the clock at that time and was (still is) in good nick. I had the aftercooler and EGT gauge plus Beaudesert 3" system fitted too. Really happy with the result, Regularly go away with a CT and it is nice not having to struggle on the long runs and hills. Fuel consumption has improved both with and without trailer. I figure out that it will pay for itself in about 20 years. I would have like to have fitted the aftercooler myself, the horns shift a bit and a couple of panel are modified. that bit wasn't the most professional mod I've seen. But it would have taken me all day to fit the cooler.....
They did a before and after dyno check, tweaked the fueling a bit and presto. No smoke on full load plus torque to go. Exhaust temp has not been as high as a lot of posters have ... eh well .. posted. Mine Up Greenmount or Red HIll towing the trailer peaks around 500- 510. Never seen higher. Good mod inmy opinion. But as people say, it is old school engine and if the extra grunt is used wisely the engine shoud be fine.

Denco turbo and complete exhaust system $3100 10 psi boost 500-550c
now pulls like a road train with 2500kg bike trailer behind