Dougal

Turbos normally have labyrinth seals which always leak. On a healthy turbo they leak inwards. So exhaust and boost leaks into the core, down the drain and into the crankcase. If the engine has too much crankcase pressure then the turbo will...

Reposting this from the other thread: 1HDT BEBs Unique Problem - https://forum.ih8mud.com/threads/1hdt-bebs-unique-problem.1366720/ Yes it's a cavitation/resonance problem that causes the damage and it's probably at that rpm. I think the...

3% fuel is a lot after 3000 miles. Are you doing a lot of short and cold running?

Yes it's a cavitation/resonance problem that causes the damage and it's probably at that rpm. I think the reason Australia found this problem early and NZ didn't was because Australians spend a long time at constant speed where Kiwi's don't...

The better your turbo is the less time you spend off-boost.

I’m selling mine sadly but I have a 1990 1hdt hdj81 I did the g turbo grunter the pdi intercooler with custom air box and snorkel from moonlight fabrication. I did sea performance exhaust. I rebuilt the injection pump and did new injectors and...

The cooling problems are related to the rich tune. Diesels get a lot of their cooling from excess air and the richer they run the hotter they run. IDI diesels also run hotter than others. Running a leaner tune really helps the heat. VW tdi is...

Boost isn't the problem. A/F ratio is. It's the combination of boost, fuel and timing that kills engines. 7psi isn't enough. I'd go 10psi. At 7psi you can only safely increase fuel by 10% (18:1 under load) which will give you a whopping...

Remote turbos are the worst idea on diesels. They don't have the high exhaust energy/temp that petrols have so response would really really suck. The problem with the 2L engines (and other japanese IDI) is they run at stoich under full load...

At this point, the oil cooler and oil cooler cover have been replace, the head resurfaces and a new Toyota head gasket installed and the turbo coolant lines have been bypassed. Made several round trips to town (1 hour each way) and a 100 mile...

You might have noticed that all heavy machinery run donaldson or equivalent cyclonic filters. Because nothing beats them for the ability to throw out dust and keep filtering. The 4wd action test was using 5 micron particles which are relatively...

Stretched 300mm

It's a cavitation problem in the crank, so they need regular replacement. Oil analysis will show anything loose, but it won't show a chunk of bearing material that's fatigued and about to let go. Change them every 100,000km.

Is that an old 165 still doing the job?

You and me both! I've got a clutch to do on a TD42 in the next few weeks so I'll weigh that while it's out. It will be interesting to see how the competition compares. A place I work has a few old 2Hs sitting in the yard. From memory they're...

Probably similar to the one I have on my Dmax. That one overboosts to almost 30psi on hard acceleration. Which is interesting but not a big deal. Steady state load it's only ~15psi. Interestingly fixed geometry turbines are more efficient...

I can confirm that the 15BF l'm fitting to my 80 series chassis has the engine mount brackets at 50 degrees. The old 80 series chassis mounts were at 40 degrees which was the 1FZ petrol. I cut and changed them to be at 50 degrees.

Yeah no problem. Oils are made to mix because you never start with a clean and dry engine.

That's weird. No-one gets exactly the same result on all cylinders. But oh well. TD04 you'll be looking at aftermarket copies. The Mazda turbo will work but I don't know anything else about them.

The coolant lines have been bypassed. I'm not too worried about running without coolant to the turbo as turbos ran for years without coolant. Wherever the leak is, it it very small as it took several days of driving before any oil was evident...

No problems at all mixing 154W40's from different brands. The 1HZ would be fine with olive oil in the crankcase. It's a low stress application with no special needs.

Here in NZ we had everyone with an injection pump problem blaming the fuel changes. But all the machinery I was involved with had no issues at all and some of them were over 60 years old. Most of the complaints seemed to be from 15+ year old VE...

Sulphur isn't a lubricant, there was a lot of scare-mongering that ULSD would cause all sorts of injection pump problems in every country. But it hasn't worked out that way. Diesel has lubricity specs to meet. I haven't had any issue with...

Just putting it out there for the reference information. 1HZ out of a HZJ75 troopy. Complete with everything as you'd remove it from the vehicle. Flywheel, clutch, alternator, manifolds, oil in the sump ect. Just missing the fan...

The particles they let through are too small to see. They're absolutely terrible things for engines. You will need a compression test.