80 series aftermarket turbo no more over heating so far

I have a hzj105 with a safari intercooled turbo. The place I can get it to overheat are long hills in 110 speed zones when travelling at 110. However, if I drop the speed to 100 KmHr, it significantly reduces the temperature.

It can be seen most dramatically in the EGT, where (pre Turbo) the EGT will get up to around 520 or more at 110 but will drop to around 430 at 100.


For example, some of the long hills on the Newel Highway and Pentland hills west of Melbourne. Also, it most commonly happens when the outside air tempreture is above 30 degrees.

Hey fishez- If you havent already, it might be worth ya getting an aftermarket temp gauge now that you have the turbo (if you are just going by the OEM one on the dash)...
The OEM thing is about as accurate as kicking a tyre to check your air pressures. I think it reads in the middle for something like 70-120 degrees.

Bought our 80 series as an old tart, 240,000km. Now on exactly 300,000 kms. Been to the centre with her a couple of times, including the Simpson Desert last August. Also towed a boat and camper. No problems at all.
I got a little scared after reading some of the negative reports on this site suggesting that 300,000 was a 'blow-up' milestone, so had my mechanic give her a real good physical. Also rang the people who fitted the turbo originally, they said they have customers with 80's that have over 500,000 without issue. They reckon the only problems they ever see are related to poor fuel quality and crook injectors. They strongly recommend injector service every 100,000kms. Had mine done, now she performs even better.
Got my fingers crossed that the doom sayers are just armchair experts who didn't spend the money on looking after their trucks.
As the guy who jumped of the roof of the skyscaper said to the people he saw on the way down .."So far, so good".