Toyota 1HZ engine - are they a good engine?

Submitted: Sunday, Feb 01, 2009 at 14:26
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G'day all, how does a 1Hz engine compare with other toyota diesel engines in that range? thanks
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Reply By: Sir Kev & Darkie - Sunday, Feb 01, 2009 at 14:32

Sunday, Feb 01, 2009 at 14:32
The 1HZ is a slug.......but it will work all day every day.

Don't expect to break any land spped records especially if towing.

Cheers Kev
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Follow Up By: Matt Watson - Sunday, Feb 01, 2009 at 17:55

Sunday, Feb 01, 2009 at 17:55
I'm interested in what people consider "a slug".. Will it get upto the speed limit in all states but the NT? or could you not expect to get over 100kmh ?
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Follow Up By: Sir Kev & Darkie - Sunday, Feb 01, 2009 at 18:07

Sunday, Feb 01, 2009 at 18:07
I can get Darkie up to 120km/h towing the trailer loaded going down hill or on a very long flat section.
Hills of any size are 2nd gear sub 40km/h with trailer and around 3rd gear 60km/h without it.

Cheers Kev
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Reply By: Kroozer - Sunday, Feb 01, 2009 at 14:56

Sunday, Feb 01, 2009 at 14:56
Sluggish yes, but probably one of the strongest and most reliable engines ever built. Will last a very long time also.
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Follow Up By: MEMBER - Darian (SA) - Sunday, Feb 01, 2009 at 15:57

Sunday, Feb 01, 2009 at 15:57
Are they any good ? Surely the 1HZ must have been responsible for much of the advancement of mankind since WW2 - so many of them in use, with ledgendary odometer figures - understressed, plodding away endlessly..... I reckon I've seen them on oil rigs at Moomba.... could be that they used them for Yanmar marine applications too.
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Reply By: Member - Doug T (NT) - Sunday, Feb 01, 2009 at 15:32

Sunday, Feb 01, 2009 at 15:32
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Follow Up By: Lotzi - Sunday, Feb 01, 2009 at 15:41

Sunday, Feb 01, 2009 at 15:41
Well said/pictured Doug, I have seen them around that mark in both the 4bees and coasters, good motor, change oil and filters like a religion.
Swambo just pointed out that is 146 oil changes ..... $orry. I will now hide the calculator...

Cheers
Lotzi
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Follow Up By: toyotabits.com - Sunday, Feb 01, 2009 at 15:47

Sunday, Feb 01, 2009 at 15:47
Thanks Doug - that speaks for itself! dingo
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Follow Up By: Member - Doug T (NT) - Sunday, Feb 01, 2009 at 15:57

Sunday, Feb 01, 2009 at 15:57
Lotzi
No.... about 72 changes, I have always done oil at 10,000 intervals and I always add Nulon .

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Follow Up By: Member - Doug T (NT) - Sunday, Feb 01, 2009 at 15:59

Sunday, Feb 01, 2009 at 15:59
Lotzi
Oh and I forgot to add that in each 10,000 I do not have to add oil , even today.

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Follow Up By: Member - Jack - Sunday, Feb 01, 2009 at 16:31

Sunday, Feb 01, 2009 at 16:31
This response must surely be the ultimate "A picture is worth a thousand words" statement.

Well done Doug.

Jack
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Follow Up By: Hairy (NT) - Sunday, Feb 01, 2009 at 20:35

Sunday, Feb 01, 2009 at 20:35
Gday Doug,
When I first looked at it I thought you were explaining "slug"
( the speedo)
then I realised the odometer!! Hahahahahaha

Shouldnt have owned up to that hey???

LOL
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Follow Up By: Lotzi - Sunday, Feb 01, 2009 at 22:34

Sunday, Feb 01, 2009 at 22:34
G'day Doug
My last Coaster, I tried a few different things, I ran Amsoil synthetic oil to 10k, with a filter change at 5k, eventually I went back to oil/filter changes at 5k, just felt more comfortable, you know what its like... fresh oil they just purrr, and still not use oil.
If anything with these motors, i would try a spinner type filter similar to that fitted to Scania, run to 20k and do an oil analysis.
That Coaster is now out at Alice doing Town/Rock and Kings Canyon runs and still going strong.
I am just a loyal Toyota person, have been for a long time.
Lotzi
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Follow Up By: Seakarvan - Monday, Feb 02, 2009 at 03:56

Monday, Feb 02, 2009 at 03:56
Daughter has a 1HZ in a Troopy, I have still got the old 2H in a Troopy if anyone is concerned about "Sluggish"
Considering I service both vehicles at around 5K each (mine from new in 1986) I reckon they aren't a bad truck doing what they were designed for.
If I want to blow away the "Sluggish" I wheel out my Honda 1100XX and annoy the young blokes at Eastern Creek.

Cheers
Seakarvan
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Follow Up By: Member - Josh (VIC) - Monday, Feb 02, 2009 at 14:46

Monday, Feb 02, 2009 at 14:46
Hi Doug,
What nulon product do you put in (oil addative but which one). Often wonder what they are like. Obviously it has worked for you. We are up to 320,480 km's and would love to see it clock up your km's. I have found it to be a fairly faultless motor. Is yours turbo or standard. We service regulary with good oil etc. Out of interest what oil do you use? Thanks in advance. You MM me if you like.

Thanks
Josh
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Follow Up By: Member - Doug T (NT) - Monday, Feb 02, 2009 at 14:54

Monday, Feb 02, 2009 at 14:54
Josh

I use this one , there is another for worn Engines ,

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Follow Up By: Member - Josh (VIC) - Monday, Feb 02, 2009 at 18:55

Monday, Feb 02, 2009 at 18:55
Thanks Doug
I will give it a go. heres to many more km's and many more wonderful camping spots.

Thanks
Josh
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Reply By: Member - lyndon K (SA) - Sunday, Feb 01, 2009 at 20:45

Sunday, Feb 01, 2009 at 20:45
I have owned 2, now have the T/D 4.2.
As said, if looked after they will run forever. As for speed, mine use to get up to 140 on a good day on the flat, would also tow a boat on the flat at 120 all day.
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Follow Up By: Angler - Sunday, Feb 01, 2009 at 21:56

Sunday, Feb 01, 2009 at 21:56
Had one some years ago and sold it with 520,000 on the clock, saw it the other day after some 10 years or so still going. The only way I could get it over about 115Kph was to drive down a mineshaft.

Pooley
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