Bearings and 1HZ +turbos

[bigbrowndog]

http://secure.turbonet.com.au/discus...ges/28/28.html
I came across this last night, don't know if you guys have seen it or not. Was suprised at the number bitching about their 1HZ motors shitting their bearings as I thought this was only a local thing in the north of Oz.Seems a lot throw a micky here especially when after market turbos are fitted.As for the non turbos ,I thought this was mainly due to poor maintainence and driver habits.Never hear much about this with the old 2H slugs or 12Ht.

[crushers]

curious since the aussi's seem to have the most problems with the big end bearings on the HDT and now you are alluding to simular problems with the 1hz i have to wonder if it IS the oil you boys use, the driving habits and the maitenace habits.
where else have such numbers of problems been recorded?
cheers

[HZJ60 Guy]

What are they running for oil Wayne?

Synthetic all the way baby, or nothing at all! (that means not to run the engine)

TB

[Greg_B]

Hey Radd. You did the BEB's on a 1HZ and 1HD-T...correct? What did you find again?

Wayne. Have you done any of your 1HD-T's yet? What have you found...

I am beginning to not believe it is only an Ozzy thing. We are now taking the tack to doing all 1HZ and 1HD-T that come through G&S as a precausion, after doing a few to check and get a datum. We have found some okay, and some showing flaking.

All cranks showing okay, with ACL's plasti-gauged in spec, and one HZ using the "Mark" factory bearings.

I would strongly suggest anyone wanting to pump up an HZ do the BEB's if they have not been done already...

At this point it looks to me to be a bearing composition issue...or perhaps lugging at low rpm. High sodium oils from Japan may have helped reduce the issue, however to me it makes sense to switch them out and go with ACL's now they are in North America...otherwise a few years down the road...

I know some pulled have been okay and shown nothing unusual. Best bet is to just do them and get it over...

gb

[bad_religion_au]

i was told by a toyota mech that the big end bearings in the early 1hd-ts was due to toyota using a cheaper bearing than the later ones. the cheaper bearings happen to be the same as the 1hz BEB's. but if you boost a 1hz up too much, it's likely to blow the precombustion chamber, hence why they don't seem to have boost related issues on the BEB.

and your right about not seeing the prob with the 2H... they couldn't keep their heads in one piece for long enough

[HZJ60 Guy]

Rob did my BEB's in my 1HZ. How did the old ones look Rob?

Well I use what I consider the best synthetic oil in the world, along with a bypass oil filter. Im not to worried about it.

Tom

[bigbrowndog]

http://secure.turbonet.com.au/discus...er2320030959pm
http://www.a1.nl/phomepag/markerink/80bigend.htm

If you look at these two it makes one wonder. Most of the blokes I know who have Landcruisers are in the building trade and also use them to tow heavy trailers for their work. Most use them also for recreation on the weekends .Some of the blokes I know would be better suited to driving V8 utes, putting on a turbo and trying to drive it like a sports ute does not seem what a cruiser is about . I would expect many would not admit to poor maintainence re oil changes and timing belts.Though most of the blokes on properties complain understandardly that they are making them too soft for the city people.Seems to be so many throw the bearings I was wondering what you guys thought. Thanks.

[bigbrowndog]

I have always run Castrol rX super in mine but it is a 2H. I only started on this as I was thinking of upgrading to a newer model HJ75. Salesman I know told me to buy a new windscreen frame and keep what I have[ came as a bit of a shock]. Was looking for something with a bit more grunt.

[bigbrowndog]

Originally Posted by bad_religion_au

i was told by a toyota mech that the big end bearings in the early 1hd-ts was due to toyota using a cheaper bearing than the later ones. the cheaper bearings happen to be the same as the 1hz BEB's. but if you boost a 1hz up too much, it's likely to blow the precombustion chamber, hence why they don't seem to have boost related issues on the BEB.

and your right about not seeing the prob with the 2H... they couldn't keep their heads in one piece for long enough

still a lot of H and 2H motors around with 300,000 to 600,000 ks on them. I have a mate who works on a station on the cape his 1979 truck had well over 500,000 ks last time I saw him.Reckons he would not buy a HJ75, too soft, can't leave the windows down when it rains & not enough room in the cab to turn a rifel round in when I'm shooting. Some blokes have their priorities.

[Greg_B]

Originally Posted by HZJ60 Guy

Well I use what I consider the best synthetic oil in the world, along with a bypass oil filter. Im not to worried about it.Tom

With new BEB's I would not be either Tom...

gb

[bigbrowndog]

http://www.a1.nl/phomepag/markerink/80bigend.htm This link was given to me by the salesman. I should have mentioned that, seems to go on forever.
Just wanted to ask ,when you blokes changed to synthetic oils did you wash out your engines before the change? I have not heard much about running synthetic oil in diesels but a common thing here was when hi performance 6 and V8 petrol engines were changed over they developed a lot of sludge causing some failures.Known locally as the black death.It was not much of a problem with semi synthetic at all but then that is usually a heavier grade oil pehaps better suited to the clearences.Thanks.

[Tapage]

I was no notice that this common problem in the end big bearings here .. off course, not a lots of people here use their 80 series to pull any o carry anything. In the other hand the Coaster bus, here come with the 1HZ engine, and believeme Coaster Driver think much faster, with more people, more money ..

this engines have no issues and really poor maintenance.

[bad_religion_au]

Originally Posted by bigbrowndog

still a lot of H and 2H motors around with 300,000 to 600,000 ks on them. I have a mate who works on a station on the cape his 1979 truck had well over 500,000 ks last time I saw him.Reckons he would not buy a HJ75, too soft, can't leave the windows down when it rains & not enough room in the cab to turn a rifel round in when I'm shooting. Some blokes have their priorities.

yeah i was only givin ya gip about the 2h my bro's H is runnin fine.

i was surprised to hear mention of the 1hz like this, the 1hd-t an ex toyota service mechanic told me all about, even how to I.D. the ones more prone to it (between certain engine numbers a really dodgy batch of bearings was used) but i forgot the numbers... doh

but many of my friends run 1hz's in their 80's, 100's, and 75's

one is religeous about oil changes but that's as far as he goes maintanence wise, in his 75 series, tows a heavy trailer (building industry) drives it like a sports car, and is runnin 16 PSI of boost at idle with his home made turbo kit. on weekends he bolts on the 35's and thrashes it mercilessly, and in 100 000k
s (since he fitted the turbo) his motor costs include: oil and filters, a set of glowplugs.

this truck is why i am fond of the 1hz

[crushers]

i have 2 of my rigs going under th eknife in the next couple weeks so i will report my findings..
cheers

[HZJ60 Guy]

Originally Posted by bigbrowndog

http://www.a1.nl/phomepag/markerink/80bigend.htm This link was given to me by the salesman. I should have mentioned that, seems to go on forever.
Just wanted to ask ,when you blokes changed to synthetic oils did you wash out your engines before the change? I have not heard much about running synthetic oil in diesels but a common thing here was when hi performance 6 and V8 petrol engines were changed over they developed a lot of sludge causing some failures.Known locally as the black death.It was not much of a problem with semi synthetic at all but then that is usually a heavier grade oil pehaps better suited to the clearences.Thanks.

See that's just WRONG! (no offense) Synthetic oil has way more solvent activity in it than any dyno oil. It's because of this that OLD engines offen develope LEAKS after switching over to synthetic. The Synthetic oil washes away all of the old sludge build up and exposes gasket issues that might have been fine with the old sludge keeping them sealed!!!!

[bigbrowndog]

Originally Posted by HZJ60 Guy

See that's just WRONG! (no offense) Synthetic oil has way more solvent activity in it than any dyno oil. It's because of this that OLD engines offen develope LEAKS after switching over to synthetic. The Synthetic oil washes away all of the old sludge build up and exposes gasket issues that might have been fine with the old sludge keeping them sealed!!!!

No Offense Taken I am trying to get a bit more knowledge, even quite happy to listen to constructive critizism. cheers.
I posted this on mud in Febuary this year5/2/05 [way you guys write it.
http://www.chris-longhurst.com/carbi...oil_bible.html
In this article Longhurst outlines some problems, This was taken of a hot commodore forum in Oz.We were discussing engine failures in Modified V6 and V8 [304/355 and Gen 3 motors[ls1]. This not confined to GM & GMH motors,the Ford boys and the Ricers have the same problem. I have one my sons V6s in my garaage at the moment, oil failure.The sump and rocker covers were full of sludge [black sticky shit] this engine was running mineral oil then changed to Mobil 1. This engine had quality bearings,with all ARP bolts throughout.Modified cam and chip 1800 stallie.
dam spelling,

[bigbrowndog]

Originally Posted by bad_religion_au

yeah i was only givin ya gip about the 2h my bro's H is runnin fine.

i was surprised to hear mention of the 1hz like this, the 1hd-t an ex toyota service mechanic told me all about, even how to I.D. the ones more prone to it (between certain engine numbers a really dodgy batch of bearings was used) but i forgot the numbers... doh

but many of my friends run 1hz's in their 80's, 100's, and 75's

one is religeous about oil changes but that's as far as he goes maintanence wise, in his 75 series, tows a heavy trailer (building industry) drives it like a sports car, and is runnin 16 PSI of boost at idle with his home made turbo kit. on weekends he bolts on the 35's and thrashes it mercilessly, and in 100 000k
s (since he fitted the turbo) his motor costs include: oil and filters, a set of glowplugs.

this truck is why i am fond of the 1hz

Me too, A few of the boys have stuffed theirs here, I felt they would probaly blow a bog standard ford 302 or com 304[pretty hard].I was shocked when I read the last post on the bearings,went on for ages. Then I remembered the guys in Canada & USA seem to swear by them. I pretty well had made up my mind to upgrade,will wait and see. Looks a quicker job to pull out a 1HZ compared to a 2H. cheers
Crushers, thanks look forward to it.

[crushers]

what have been the pyro readings on these engines with failures? what about coolant temp, what was the readings?
i am not a big fan of full synth at all, i like the semisynth but i still have to keep an open mind...
cheers

[bigbrowndog]

Hi Crushers, Not sure at all. Did you read the post, thats all I had to go by, really set me back
I tend to agree about the synthetic oil also, I changed my Senator back to Mobil S it is semi synthetic but has a higher low number reading. The LSD independent rear end has to have synthetic though.Our operating temperatures would be higher than yours.Always stuck with Rx super in the old 2H.cheers.

[crushers]

i have read tons of williams posts in the past...
i might have to give this one another read...
run a litre of tranny fluid through to flush the system befroe the next oil change and see all the crap that comes out...
cheers

[bigbrowndog]

will try that and see. I use it in the bore for installing the pistons with the new rings on a rebuild.

[sburles]

Sludge to keep your engine sealed???Not for me.An idea might be to use an engine flush and change filters very soon.Some synthetic rep for causing leaks came from oil manufactures reducing additive packages to keep costs down.Premuim modern synthetics have more seal swelling additives than dyno so should be less likley to leak.I use synthetic in my vehicles and would not use anything else.Dyno oil in certian toyota engines is notorious for producing sluge.Dyno with it's unstable base stock contains molicules of various sizes .The lighter ones tend to boil of at high temps.Concentrating the remaing oil channnging it's lubricity characteristics and it's ability to deal with buyproducts of combustion.My 2bits

Cheers Stephen

[VTCruiser]

Originally Posted by sburles

Dyno oil in certian toyota engines is notorious for producing sluge.Dyno with it's unstable base stock contains molicules of various sizes .The lighter ones tend to boil of at high temps.Concentrating the remaing oil channnging it's lubricity characteristics and it's ability to deal with buyproducts of combustion.My 2bits

Cheers Stephen

not diesel related but my aunt used to drive a highlander and ended up having to get rid of it due to engine oil sludging, i was surprised to hear this. they have a brand new 4runner now.

[bigbrowndog]

Stephen, cheers mate. I missed the point of the sludge sealing the engine until you pointed it out.That shit is lethal,drops oil pressure,restricts the oil intake,makes the hydraulic lifters stick.And gums up everything until failure.My lads sump had app 1/2 an inch of thick sludge in the sump .Have not had to worry about leaks though this would happen on an old engine especially if left standing for extended periods.cheers
By Dyno do you mean mineral oil or semi synthetic ,

[VTCruiser]

i plan to turbo my 1HZ within the next 6 mo and will probably do BEB's as a precaution. the replacement bearings have been upgraded from the orginals right....? I am considering ACLs too.

[bigbrowndog]

HiVerm, from going through that post it seems to be the bearings they used up until 1995.Seems quality bearings should solve the problem.cheers mate.

[Tapage]

Originally Posted by crushers

i have read tons of williams posts in the past...
i might have to give this one another read...
run a litre of tranny fluid through to flush the system befroe the next oil change and see all the crap that comes out...
cheers

ATF .. ? you mean, add 1 litre of ATF fluid to my 2H engine and run ? ( usualy I use 20W-50 Castrol mineral 11 botles )

[crushers]

yep, do this about 100 km before an oil change. ATF has detergent in it so it cleans the passages...
works good
cheers