80 series aftermarket turbo no more over heating so far

Submitted: Thursday, Feb 19, 2009 at 08:35
ThreadID: 66097 Views:1945 Replies:3 FollowUps:3
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Morning all, i am extremley please so far as I have put the 80 through its paces and have not been able to get the temp up. I know this has been brought up on numerous occasions on this forum so hope fully a couple of you with the problem will do the same fix and confirm the problem repair.

Valve clearances.
Set them to the most open side of the spec.
1HZ Specs (standard)
Inlet 1.5 - 2.5
Exhaust 3.5 - 4.5

1HZ with Aftermarket Turbo, set to
Inlet 2.0 - 2.5
Exhaust 4.0 - 4.5

I have not yet put the boat behind the cruiser yet, that will be the main test but I was unable to bring the temp at all no matter what I put it through.

Am keen for feedback.

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Reply By: Mr Pointyhead - Thursday, Feb 19, 2009 at 09:12

Thursday, Feb 19, 2009 at 09:12
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.

AnswerID: 349829

Follow Up By: hotfishez - Thursday, Feb 19, 2009 at 09:55

Thursday, Feb 19, 2009 at 09:55
mine didnt matter what the outside temp was. up hills when it was working hard, sit on 125+ kph for more than 10 mins and towing over 90kph. Two days ago on a trip in the Pilbara (when it wasnt raining) i sat on 130+ for over an hour with out the temp gauge moving, pushing up through munjina gorge, foot to the floor, a definate temp up section, temp did not move. I also found the performance in the top end dramatically improve.
FollowupID: 618114

Reply By: bennspoon - Thursday, Feb 19, 2009 at 15:28

Thursday, Feb 19, 2009 at 15:28
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.
AnswerID: 349889

Follow Up By: hotfishez - Thursday, Feb 19, 2009 at 15:45

Thursday, Feb 19, 2009 at 15:45
I have calibrated the temp gauge against a snap-on temp gun and an aftermarket gauge. It is suprisingly accurate. I cant remember the actual temps but it was within 6 - 8 or so degrees going off the temp range from the bottom to top mark of the standard gauge.
FollowupID: 618171

Reply By: Smudger - Thursday, Feb 19, 2009 at 21:19

Thursday, Feb 19, 2009 at 21:19
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".
AnswerID: 349947

Follow Up By: Smudger - Thursday, Feb 19, 2009 at 21:26

Thursday, Feb 19, 2009 at 21:26
Meant to say that mine was fitted with an after market turbo at birth and the mechanics I mentioned were referring to other 80's they'd fitted after market turbos to.
FollowupID: 618249

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