Dunno where the thread went but there was one on Toyota diesel bearings and how 'non-Japanese oil' was essentially the cause of the problem. It looks like Toyota may have had a bearing problem, a couple of different suppliers where one supplier had problems, it appears that possibly overlapping that problem was a lesser crankshaft problem, and in fact some people were suggesting that using a synthetic produced less of a problem.
A more interesting claim by the gentleman suggesting that 'non-Japanese oil' was the problem is that big oil threatened to kill people who were trying to solve the problem, and UOA samples were stolen. 60 Minutes, 20/20, the New Zealand govenrment, universities and ohers were involved, but all evidently dropped the issue (did anyone see this on 60 Minutes ?) to avoid being killed. Bitogers unite ! Fight big oil with your UOAs before a monstrous conspiracy can contaminate our precious mechanical fluids.
http://www.lonards-automotives.com.au/landcruiser.html
Rust wasn't an issue with the 80 series but however it has its problems. Gearbox's require the correct grade oil otherwise they will crunch when changing, mainly 2nd and 3rd. Front inner axle seals leak and they are heavy on front CV joints due to the constant 4wd. The 1HDT engine had big end bearing dramas. Some bearings delaminated and most were rebuilt by Toyota. The problem being that Toyota had 2 suppliers of bearings, one lot were faulty and the other lot weren't. The only problem was that Toyota didn't know who's bearings went into what cars so it was a warranty fix on demand.
http://www.markerink.org/WJM/HTML/80bigend.htm
We're talking different things. The problem you were experiencing was faulty machining of the crankshaft. It's seen on 1HZ's and 1HD-FT's. It seems that it's more apparent on the 1HD-FT, probably because of the sharper power stroke. That said, you're seeing symptoms as opposed to the big end bearing problem of the 1HD-T. The motor runs fine with no symptoms. When you do hear something it's invariably too late.
> Could this be why all your 1HD-T bearings are failing???? ;-) Well actually, those running on Mobil 1 don't seem to suffer the problem.
The NZ Commerce Commision, the ACCC (Australia's version of a commerce commission), 60 minutes, 20/20, Automobile Association's, some manufacturers and some University engineering departments were contacted to discuss the problem and what to do about it. The general consensus from most of the organisations contacted was this is way too big for us and we are not prepared to confront multinational oil companies. The other common feedback was be very careful you are treading on very powerful toes.Further along lab samples started disappearing on route to be lab tested, not completely though somewhere in transit they were being opened and the empty box being sent on to the lab, and then the lab would contact the sender to say why did you send us an empty box. The people involved in the study and there families started to get messages leave the oil alone, stop this research. The people involved in the study were then informed to cease and desist or they would be killed at this point research was abandoned. It appeared that the research was upsetting someone alot. Regards, Craig.BE Mech
A more interesting claim by the gentleman suggesting that 'non-Japanese oil' was the problem is that big oil threatened to kill people who were trying to solve the problem, and UOA samples were stolen. 60 Minutes, 20/20, the New Zealand govenrment, universities and ohers were involved, but all evidently dropped the issue (did anyone see this on 60 Minutes ?) to avoid being killed. Bitogers unite ! Fight big oil with your UOAs before a monstrous conspiracy can contaminate our precious mechanical fluids.
http://www.lonards-automotives.com.au/landcruiser.html
Rust wasn't an issue with the 80 series but however it has its problems. Gearbox's require the correct grade oil otherwise they will crunch when changing, mainly 2nd and 3rd. Front inner axle seals leak and they are heavy on front CV joints due to the constant 4wd. The 1HDT engine had big end bearing dramas. Some bearings delaminated and most were rebuilt by Toyota. The problem being that Toyota had 2 suppliers of bearings, one lot were faulty and the other lot weren't. The only problem was that Toyota didn't know who's bearings went into what cars so it was a warranty fix on demand.
http://www.markerink.org/WJM/HTML/80bigend.htm
We're talking different things. The problem you were experiencing was faulty machining of the crankshaft. It's seen on 1HZ's and 1HD-FT's. It seems that it's more apparent on the 1HD-FT, probably because of the sharper power stroke. That said, you're seeing symptoms as opposed to the big end bearing problem of the 1HD-T. The motor runs fine with no symptoms. When you do hear something it's invariably too late.
> Could this be why all your 1HD-T bearings are failing???? ;-) Well actually, those running on Mobil 1 don't seem to suffer the problem.
The NZ Commerce Commision, the ACCC (Australia's version of a commerce commission), 60 minutes, 20/20, Automobile Association's, some manufacturers and some University engineering departments were contacted to discuss the problem and what to do about it. The general consensus from most of the organisations contacted was this is way too big for us and we are not prepared to confront multinational oil companies. The other common feedback was be very careful you are treading on very powerful toes.Further along lab samples started disappearing on route to be lab tested, not completely though somewhere in transit they were being opened and the empty box being sent on to the lab, and then the lab would contact the sender to say why did you send us an empty box. The people involved in the study and there families started to get messages leave the oil alone, stop this research. The people involved in the study were then informed to cease and desist or they would be killed at this point research was abandoned. It appeared that the research was upsetting someone alot. Regards, Craig.BE Mech
