HDJ81 1HD-T BEB replaced

[lacruiser]

what size of acls do i buy?
there are the different sized ones?

ACL DURAGLIDES 6B8396
O/S: STD, .25, .50, .75, 1.00

what sizes do i pick? whats the standard size?

You would want the standard size bearings, unless the crankshaft has been removed and turned, so as to make the journals smaller. Then you'd need thicker (undersized) bearings to take up the extra space. They come in different under sizes to accommodate different sized journals

If you're driving a JDM import, it's highly unlikely the oil pan has ever been off, so therefore the journal sizes would be standard.

The factory uses a grey pan gasket sealant, that's one clue. Also, the size of the bearing shells will be indicated on the reverse side of each bearing, easily visible when you remove them. And of course you can always measure the journals when you get it all apart.

 

[sandcruiser]

loctite on con rod bolts?

(keyword: lock tite, threadlocker, loctite, locktight)

i assume that no, but just checking

 

[wussyPup]

the FSM didn't ask for it, so I didn't

 

[sandcruiser]

after cranking those darn bolt home (27lbs + 90 degrees) I'm pretty sure that they won't come off on their own. Dang that is a lot of torque, especially in an awkward position.

the bearings that came out were in decent shape- #1 and #2 both had a pretty good gouge, #3 and #5 show some wear, but no serious flaking issues like some folks have had.

all things considered, I'm glad to have done the job, but it was a dirty (dirty!) experience. Worse than birfields, IMO. The oil just keeps dripping and you've really got to be right under the pan if you are doing this on your back. The end result.... I'm glad I wore a "disposable" shirt.

 

[landcrusher80]

Cavitation Noise on Diesel

Have you guys read this?

http://www.tytlabs.co.jp/english/review/rev401epdf/e401_036aoyama.pdf


Cheers,

LandCrusher80

 

[Radd Cruisers]

Use the standard size ACL bearings unless the crank has been out and machined - in which case you are going to have to carefully measure each journal.

Rod bolts will usually get a small amount of light oil applied before torquing.

Read the FSM if you have questions.

~John

 

[Dougal]

Have you guys read this?

http://www.tytlabs.co.jp/english/review/rev401epdf/e401_036aoyama.pdf


Cheers,

LandCrusher80

Just tried and it crashed my web browser.:whoops:

 

[crushers]

yah, yah, that rumor has been around since i started importing the 81 series. there is an importer that swears that if you run Amsoil you don't have to change out the BEBs. i had one of his trucks sitting here last fall with a spun bearing. it is a $6500 repair on a $12,000 vehicle.
do you think the importer will foot the bill? nope, he told the owner that he didn't change his oil often enough (he changed every 5000 km).

so, long story short, if you like sleeping soundly at night then change out the BEBs. if you like EXPENSIVE risk then don't change them out.

$100 bearings and a dirty weekend is cheap insurance.

basicly, i would love to see someone that states you don't have to change out the BEBs if you run amsoil offer up a full cost warranty to back their statements. (it will never happen)

 

[ForealBoreal]

yah, yah, that rumor has been around since i started importing the 81 series. there is an importer that swears that if you run Amsoil you don't have to change out the BEBs. i had one of his trucks sitting here last fall with a spun bearing. it is a $6500 repair on a $12,000 vehicle.
do you think the importer will foot the bill? nope, he told the owner that he didn't change his oil often enough (he changed every 5000 km).

so, long story short, if you like sleeping soundly at night then change out the BEBs. if you like EXPENSIVE risk then don't change them out.

$100 bearings and a dirty weekend is cheap insurance.

basicly, i would love to see someone that states you don't have to change out the BEBs if you run amsoil offer up a full cost warranty to back their statements. (it will never happen)

a warrenty in japan that is offered to the people who buy it in NA , ahahahah i would not trust that. Seriously it takes a day if you have your ducks in a row. Its not hard to do at all.

Legend, that was a good article.
Does the 1hz traditionally have beb problems? or do we mainly change them due to the fact that the 1hd-t has problems.

 

[crushers]

actually i was talking importers in Canada that tell their customers to run Amsoil and not to bother changing out the BEBs

 

[Dave 2000]

I note that it seems everyone assumes this bearing problem is down to the oil used in Japan. I have a UK spec HDJ80 and despite everyone telling me this is an oil related issue only to JDM I thought I would take my UK spec apart....you know......just in case:

https://forum.ih8mud.com/80-series-tech/378409-beb-just-observations.html#post5467567

And there is your answer, a UK model with service history and signs of wear, JDM or not IMO there is either an issue with the bearing materials or more likely an issue during re-assembly period.


regards

Dave

 

[Dougal]

I note that it seems everyone assumes this bearing problem is down to the oil used in Japan. I have a UK spec HDJ80 and despite everyone telling me this is an oil related issue only to JDM I thought I would take my UK spec apart....you know......just in case:

https://forum.ih8mud.com/80-series-tech/378409-beb-just-observations.html#post5467567

And there is your answer, a UK model with service history and signs of wear, JDM or not IMO there is either an issue with the bearing materials or more likely an issue during re-assembly period.


regards

Dave

Or is it an oil supply problem?

 

[Radd Cruisers]

Or is it an oil supply problem?

Certainly looks like a cavitation problem.

~John

 

[crushers]

i have seen this on a couple HDTs i have replaced the bearings on...
might be oiling problem but it looks like delamination to me with particles making it to the other bearing...

 

[Dougal]

i have seen this on a couple HDTs i have replaced the bearings on...
might be oiling problem but it looks like delamination to me with particles making it to the other bearing...

Yes that's the final failure, but what is causing the bearings to delaminate?
I suspect there's not enough oil to the shells themselves. Which is why the same bottom end works fine on a non turbo 1HZ but has issues when turbocharged.

 

[crushers]

poor material construction...
i have yet to hear of the same failure with the ACL bearings in the same engines that have the delamination... of course it would be nice if these owners would check the new ones at 100K to just be sure.

 

[Dougal]

poor material construction...
i have yet to hear of the same failure with the ACL bearings in the same engines that have the delamination... of course it would be nice if these owners would check the new ones at 100K to just be sure.

I'm not convinced.
My Isuzu and other toyota diesels run plain aluminium shells without any of these issues.
That suggests an engine specific problem rather than a component problem.
I have heard of owners having the same damage on the next set, which again rules out the "bad batch of shell" excuse which toyota trotted out.

 

[Dave 2000]

As it is such an easy job I will pull down the BEB's after 100,000 and see if there are any issues however, I do have to do another 96,000 miles to go though

regards

Dave

 

[jake2far]

Here is a site that seems to have some info related to the BEB

1HD-T big end bearings
Photos of the actual bearings that have been removed.


Jim

 

[lshobie]

If you look at the contact area on those battered bearings it almost looks like the crank diameter was too small for the bearing. I understand that of course the top and bottom would take the beating but you would think there should be more wear on the whole surface of the bearing, something that I have seen on bearings that I have replaced in 1HDT and 1HZ's with no problems.